.
/**
* @package mod_forum
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
/** Include required files */
require_once(__DIR__ . '/deprecatedlib.php');
require_once($CFG->libdir.'/filelib.php');
require_once($CFG->libdir.'/eventslib.php');
/// CONSTANTS ///////////////////////////////////////////////////////////
define('FORUM_MODE_FLATOLDEST', 1);
define('FORUM_MODE_FLATNEWEST', -1);
define('FORUM_MODE_THREADED', 2);
define('FORUM_MODE_NESTED', 3);
define('FORUM_CHOOSESUBSCRIBE', 0);
define('FORUM_FORCESUBSCRIBE', 1);
define('FORUM_INITIALSUBSCRIBE', 2);
define('FORUM_DISALLOWSUBSCRIBE',3);
/**
* FORUM_TRACKING_OFF - Tracking is not available for this forum.
*/
define('FORUM_TRACKING_OFF', 0);
/**
* FORUM_TRACKING_OPTIONAL - Tracking is based on user preference.
*/
define('FORUM_TRACKING_OPTIONAL', 1);
/**
* FORUM_TRACKING_FORCED - Tracking is on, regardless of user setting.
* Treated as FORUM_TRACKING_OPTIONAL if $CFG->forum_allowforcedreadtracking is off.
*/
define('FORUM_TRACKING_FORCED', 2);
define('FORUM_MAILED_PENDING', 0);
define('FORUM_MAILED_SUCCESS', 1);
define('FORUM_MAILED_ERROR', 2);
if (!defined('FORUM_CRON_USER_CACHE')) {
/** Defines how many full user records are cached in forum cron. */
define('FORUM_CRON_USER_CACHE', 5000);
}
/**
* FORUM_POSTS_ALL_USER_GROUPS - All the posts in groups where the user is enrolled.
*/
define('FORUM_POSTS_ALL_USER_GROUPS', -2);
define('FORUM_DISCUSSION_PINNED', 1);
define('FORUM_DISCUSSION_UNPINNED', 0);
/// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will create a new instance and return the id number
* of the new instance.
*
* @param stdClass $forum add forum instance
* @param mod_forum_mod_form $mform
* @return int intance id
*/
function forum_add_instance($forum, $mform = null) {
global $CFG, $DB;
$forum->timemodified = time();
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$forum->id = $DB->insert_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if ($forum->type == 'single') { // Create related discussion.
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = trusttext_trusted(context_course::instance($forum->course));
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
$discussion->id = forum_add_discussion($discussion, null, $message);
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$discussion = $DB->get_record('forum_discussions', array('id'=>$discussion->id), '*', MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
$DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
}
}
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return $forum->id;
}
/**
* Handle changes following the creation of a forum instance.
* This function is typically called by the course_module_created observer.
*
* @param object $context the forum context
* @param stdClass $forum The forum object
* @return void
*/
function forum_instance_created($context, $forum) {
if ($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) {
$users = \mod_forum\subscriptions::get_potential_subscribers($context, 0, 'u.id, u.email');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $context);
}
}
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will update an existing instance with new data.
*
* @global object
* @param object $forum forum instance (with magic quotes)
* @return bool success
*/
function forum_update_instance($forum, $mform) {
global $DB, $OUTPUT, $USER;
$forum->timemodified = time();
$forum->id = $forum->instance;
if (empty($forum->assessed)) {
$forum->assessed = 0;
}
if (empty($forum->ratingtime) or empty($forum->assessed)) {
$forum->assesstimestart = 0;
$forum->assesstimefinish = 0;
}
$oldforum = $DB->get_record('forum', array('id'=>$forum->id));
// MDL-3942 - if the aggregation type or scale (i.e. max grade) changes then recalculate the grades for the entire forum
// if scale changes - do we need to recheck the ratings, if ratings higher than scale how do we want to respond?
// for count and sum aggregation types the grade we check to make sure they do not exceed the scale (i.e. max score) when calculating the grade
if (($oldforum->assessed<>$forum->assessed) or ($oldforum->scale<>$forum->scale)) {
forum_update_grades($forum); // recalculate grades for the forum
}
if ($forum->type == 'single') { // Update related discussion and post.
$discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id), 'timemodified ASC');
if (!empty($discussions)) {
if (count($discussions) > 1) {
echo $OUTPUT->notification(get_string('warnformorepost', 'forum'));
}
$discussion = array_pop($discussions);
} else {
// try to recover by creating initial discussion - MDL-16262
$discussion = new stdClass();
$discussion->course = $forum->course;
$discussion->forum = $forum->id;
$discussion->name = $forum->name;
$discussion->assessed = $forum->assessed;
$discussion->message = $forum->intro;
$discussion->messageformat = $forum->introformat;
$discussion->messagetrust = true;
$discussion->mailnow = false;
$discussion->groupid = -1;
$message = '';
forum_add_discussion($discussion, null, $message);
if (! $discussion = $DB->get_record('forum_discussions', array('forum'=>$forum->id))) {
print_error('cannotadd', 'forum');
}
}
if (! $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost))) {
print_error('cannotfindfirstpost', 'forum');
}
$cm = get_coursemodule_from_instance('forum', $forum->id);
$modcontext = context_module::instance($cm->id, MUST_EXIST);
$post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
$post->subject = $forum->name;
$post->message = $forum->intro;
$post->messageformat = $forum->introformat;
$post->messagetrust = trusttext_trusted($modcontext);
$post->modified = $forum->timemodified;
$post->userid = $USER->id; // MDL-18599, so that current teacher can take ownership of activities.
if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
// Ugly hack - we need to copy the files somehow.
$options = array('subdirs'=>true); // Use the same options as intro field!
$post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
}
$DB->update_record('forum_posts', $post);
$discussion->name = $forum->name;
$DB->update_record('forum_discussions', $discussion);
}
$DB->update_record('forum', $forum);
$modcontext = context_module::instance($forum->coursemodule);
if (($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) && ($oldforum->forcesubscribe <> $forum->forcesubscribe)) {
$users = \mod_forum\subscriptions::get_potential_subscribers($modcontext, 0, 'u.id, u.email', '');
foreach ($users as $user) {
\mod_forum\subscriptions::subscribe_user($user->id, $forum, $modcontext);
}
}
forum_grade_item_update($forum);
$completiontimeexpected = !empty($forum->completionexpected) ? $forum->completionexpected : null;
\core_completion\api::update_completion_date_event($forum->coursemodule, 'forum', $forum->id, $completiontimeexpected);
return true;
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @global object
* @param int $id forum instance id
* @return bool success
*/
function forum_delete_instance($id) {
global $DB;
if (!$forum = $DB->get_record('forum', array('id'=>$id))) {
return false;
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
return false;
}
if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
return false;
}
$context = context_module::instance($cm->id);
// now get rid of all files
$fs = get_file_storage();
$fs->delete_area_files($context->id);
$result = true;
\core_completion\api::update_completion_date_event($cm->id, 'forum', $forum->id, null);
// Delete digest and subscription preferences.
$DB->delete_records('forum_digests', array('forum' => $forum->id));
$DB->delete_records('forum_subscriptions', array('forum'=>$forum->id));
$DB->delete_records('forum_discussion_subs', array('forum' => $forum->id));
if ($discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id))) {
foreach ($discussions as $discussion) {
if (!forum_delete_discussion($discussion, true, $course, $cm, $forum)) {
$result = false;
}
}
}
forum_tp_delete_read_records(-1, -1, -1, $forum->id);
if (!$DB->delete_records('forum', array('id'=>$forum->id))) {
$result = false;
}
forum_grade_item_delete($forum);
return $result;
}
/**
* Indicates API features that the forum supports.
*
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_COMPLETION_HAS_RULES
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature
* @return mixed True if yes (some features may use other values)
*/
function forum_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return true;
case FEATURE_GROUPINGS: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_COMPLETION_HAS_RULES: return true;
case FEATURE_GRADE_HAS_GRADE: return true;
case FEATURE_GRADE_OUTCOMES: return true;
case FEATURE_RATE: return true;
case FEATURE_BACKUP_MOODLE2: return true;
case FEATURE_SHOW_DESCRIPTION: return true;
case FEATURE_PLAGIARISM: return true;
default: return null;
}
}
/**
* Obtains the automatic completion state for this forum based on any conditions
* in forum settings.
*
* @global object
* @global object
* @param object $course Course
* @param object $cm Course-module
* @param int $userid User ID
* @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
* @return bool True if completed, false if not. (If no conditions, then return
* value depends on comparison type)
*/
function forum_get_completion_state($course,$cm,$userid,$type) {
global $CFG,$DB;
// Get forum details
if (!($forum=$DB->get_record('forum',array('id'=>$cm->instance)))) {
throw new Exception("Can't find forum {$cm->instance}");
}
$result=$type; // Default return value
$postcountparams=array('userid'=>$userid,'forumid'=>$forum->id);
$postcountsql="
SELECT
COUNT(1)
FROM
{forum_posts} fp
INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
WHERE
fp.userid=:userid AND fd.forum=:forumid";
if ($forum->completiondiscussions) {
$value = $forum->completiondiscussions <=
$DB->count_records('forum_discussions',array('forum'=>$forum->id,'userid'=>$userid));
if ($type == COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
if ($forum->completionreplies) {
$value = $forum->completionreplies <=
$DB->get_field_sql( $postcountsql.' AND fp.parent<>0',$postcountparams);
if ($type==COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
if ($forum->completionposts) {
$value = $forum->completionposts <= $DB->get_field_sql($postcountsql,$postcountparams);
if ($type == COMPLETION_AND) {
$result = $result && $value;
} else {
$result = $result || $value;
}
}
return $result;
}
/**
* Create a message-id string to use in the custom headers of forum notification emails
*
* message-id is used by email clients to identify emails and to nest conversations
*
* @param int $postid The ID of the forum post we are notifying the user about
* @param int $usertoid The ID of the user being notified
* @return string A unique message-id
*/
function forum_get_email_message_id($postid, $usertoid) {
return generate_email_messageid(hash('sha256', $postid . 'to' . $usertoid));
}
/**
* Removes properties from user record that are not necessary
* for sending post notifications.
* @param stdClass $user
* @return void, $user parameter is modified
*/
function forum_cron_minimise_user_record(stdClass $user) {
// We store large amount of users in one huge array,
// make sure we do not store info there we do not actually need
// in mail generation code or messaging.
unset($user->institution);
unset($user->department);
unset($user->address);
unset($user->city);
unset($user->url);
unset($user->currentlogin);
unset($user->description);
unset($user->descriptionformat);
}
/**
* Function to be run periodically according to the scheduled task.
*
* Finds all posts that have yet to be mailed out, and mails them
* out to all subscribers as well as other maintance tasks.
*
* NOTE: Since 2.7.2 this function is run by scheduled task rather
* than standard cron.
*
* @todo MDL-44734 The function will be split up into seperate tasks.
*/
function forum_cron() {
global $CFG, $USER, $DB, $PAGE;
$site = get_site();
// The main renderers.
$htmlout = $PAGE->get_renderer('mod_forum', 'email', 'htmlemail');
$textout = $PAGE->get_renderer('mod_forum', 'email', 'textemail');
$htmldigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'htmlemail');
$textdigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'textemail');
$htmldigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'htmlemail');
$textdigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'textemail');
// All users that are subscribed to any post that needs sending,
// please increase $CFG->extramemorylimit on large sites that
// send notifications to a large number of users.
$users = array();
$userscount = 0; // Cached user counter - count($users) in PHP is horribly slow!!!
// Status arrays.
$mailcount = array();
$errorcount = array();
// caches
$discussions = array();
$forums = array();
$courses = array();
$coursemodules = array();
$subscribedusers = array();
$messageinboundhandlers = array();
// Posts older than 2 days will not be mailed. This is to avoid the problem where
// cron has not been running for a long time, and then suddenly people are flooded
// with mail from the past few weeks or months
$timenow = time();
$endtime = $timenow - $CFG->maxeditingtime;
$starttime = $endtime - 48 * 3600; // Two days earlier
// Get the list of forum subscriptions for per-user per-forum maildigest settings.
$digestsset = $DB->get_recordset('forum_digests', null, '', 'id, userid, forum, maildigest');
$digests = array();
foreach ($digestsset as $thisrow) {
if (!isset($digests[$thisrow->forum])) {
$digests[$thisrow->forum] = array();
}
$digests[$thisrow->forum][$thisrow->userid] = $thisrow->maildigest;
}
$digestsset->close();
// Create the generic messageinboundgenerator.
$messageinboundgenerator = new \core\message\inbound\address_manager();
$messageinboundgenerator->set_handler('\mod_forum\message\inbound\reply_handler');
if ($posts = forum_get_unmailed_posts($starttime, $endtime, $timenow)) {
// Mark them all now as being mailed. It's unlikely but possible there
// might be an error later so that a post is NOT actually mailed out,
// but since mail isn't crucial, we can accept this risk. Doing it now
// prevents the risk of duplicated mails, which is a worse problem.
if (!forum_mark_old_posts_as_mailed($endtime)) {
mtrace('Errors occurred while trying to mark some posts as being mailed.');
return false; // Don't continue trying to mail them, in case we are in a cron loop
}
// checking post validity, and adding users to loop through later
foreach ($posts as $pid => $post) {
$discussionid = $post->discussion;
if (!isset($discussions[$discussionid])) {
if ($discussion = $DB->get_record('forum_discussions', array('id'=> $post->discussion))) {
$discussions[$discussionid] = $discussion;
\mod_forum\subscriptions::fill_subscription_cache($discussion->forum);
\mod_forum\subscriptions::fill_discussion_subscription_cache($discussion->forum);
} else {
mtrace('Could not find discussion ' . $discussionid);
unset($posts[$pid]);
continue;
}
}
$forumid = $discussions[$discussionid]->forum;
if (!isset($forums[$forumid])) {
if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
$forums[$forumid] = $forum;
} else {
mtrace('Could not find forum '.$forumid);
unset($posts[$pid]);
continue;
}
}
$courseid = $forums[$forumid]->course;
if (!isset($courses[$courseid])) {
if ($course = $DB->get_record('course', array('id' => $courseid))) {
$courses[$courseid] = $course;
} else {
mtrace('Could not find course '.$courseid);
unset($posts[$pid]);
continue;
}
}
if (!isset($coursemodules[$forumid])) {
if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
$coursemodules[$forumid] = $cm;
} else {
mtrace('Could not find course module for forum '.$forumid);
unset($posts[$pid]);
continue;
}
}
$modcontext = context_module::instance($coursemodules[$forumid]->id);
// Save the Inbound Message datakey here to reduce DB queries later.
$messageinboundgenerator->set_data($pid);
$messageinboundhandlers[$pid] = $messageinboundgenerator->fetch_data_key();
// Caching subscribed users of each forum.
if (!isset($subscribedusers[$forumid])) {
if ($subusers = \mod_forum\subscriptions::fetch_subscribed_users($forums[$forumid], 0, $modcontext, 'u.*', true)) {
foreach ($subusers as $postuser) {
// this user is subscribed to this forum
$subscribedusers[$forumid][$postuser->id] = $postuser->id;
$userscount++;
if ($userscount > FORUM_CRON_USER_CACHE) {
// Store minimal user info.
$minuser = new stdClass();
$minuser->id = $postuser->id;
$users[$postuser->id] = $minuser;
} else {
// Cache full user record.
forum_cron_minimise_user_record($postuser);
$users[$postuser->id] = $postuser;
}
}
// Release memory.
unset($subusers);
unset($postuser);
}
}
$mailcount[$pid] = 0;
$errorcount[$pid] = 0;
}
}
if ($users && $posts) {
foreach ($users as $userto) {
// Terminate if processing of any account takes longer than 2 minutes.
core_php_time_limit::raise(120);
mtrace('Processing user ' . $userto->id);
// Init user caches - we keep the cache for one cycle only, otherwise it could consume too much memory.
if (isset($userto->username)) {
$userto = clone($userto);
} else {
$userto = $DB->get_record('user', array('id' => $userto->id));
forum_cron_minimise_user_record($userto);
}
$userto->viewfullnames = array();
$userto->canpost = array();
$userto->markposts = array();
// Setup this user so that the capabilities are cached, and environment matches receiving user.
cron_setup_user($userto);
// Reset the caches.
foreach ($coursemodules as $forumid => $unused) {
$coursemodules[$forumid]->cache = new stdClass();
$coursemodules[$forumid]->cache->caps = array();
unset($coursemodules[$forumid]->uservisible);
}
foreach ($posts as $pid => $post) {
$discussion = $discussions[$post->discussion];
$forum = $forums[$discussion->forum];
$course = $courses[$forum->course];
$cm =& $coursemodules[$forum->id];
// Do some checks to see if we can bail out now.
// Only active enrolled users are in the list of subscribers.
// This does not necessarily mean that the user is subscribed to the forum or to the discussion though.
if (!isset($subscribedusers[$forum->id][$userto->id])) {
// The user does not subscribe to this forum.
continue;
}
if (!\mod_forum\subscriptions::is_subscribed($userto->id, $forum, $post->discussion, $coursemodules[$forum->id])) {
// The user does not subscribe to this forum, or to this specific discussion.
continue;
}
if ($subscriptiontime = \mod_forum\subscriptions::fetch_discussion_subscription($forum->id, $userto->id)) {
// Skip posts if the user subscribed to the discussion after it was created.
if (isset($subscriptiontime[$post->discussion]) && ($subscriptiontime[$post->discussion] > $post->created)) {
continue;
}
}
// Don't send email if the forum is Q&A and the user has not posted.
// Initial topics are still mailed.
if ($forum->type == 'qanda' && !forum_get_user_posted_time($discussion->id, $userto->id) && $pid != $discussion->firstpost) {
mtrace('Did not email ' . $userto->id.' because user has not posted in discussion');
continue;
}
// Get info about the sending user.
if (array_key_exists($post->userid, $users)) {
// We might know the user already.
$userfrom = $users[$post->userid];
if (!isset($userfrom->idnumber)) {
// Minimalised user info, fetch full record.
$userfrom = $DB->get_record('user', array('id' => $userfrom->id));
forum_cron_minimise_user_record($userfrom);
}
} else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
forum_cron_minimise_user_record($userfrom);
// Fetch only once if possible, we can add it to user list, it will be skipped anyway.
if ($userscount <= FORUM_CRON_USER_CACHE) {
$userscount++;
$users[$userfrom->id] = $userfrom;
}
} else {
mtrace('Could not find user ' . $post->userid . ', author of post ' . $post->id . '. Unable to send message.');
continue;
}
// Note: If we want to check that userto and userfrom are not the same person this is probably the spot to do it.
// Setup global $COURSE properly - needed for roles and languages.
cron_setup_user($userto, $course);
// Fill caches.
if (!isset($userto->viewfullnames[$forum->id])) {
$modcontext = context_module::instance($cm->id);
$userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
}
if (!isset($userto->canpost[$discussion->id])) {
$modcontext = context_module::instance($cm->id);
$userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
}
if (!isset($userfrom->groups[$forum->id])) {
if (!isset($userfrom->groups)) {
$userfrom->groups = array();
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups = array();
}
}
$userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
}
}
// Make sure groups allow this user to see this email.
if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) {
// Groups are being used.
if (!groups_group_exists($discussion->groupid)) {
// Can't find group - be safe and don't this message.
continue;
}
if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $modcontext)) {
// Do not send posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS.
continue;
}
}
// Make sure we're allowed to see the post.
if (!forum_user_can_see_post($forum, $discussion, $post, null, $cm)) {
mtrace('User ' . $userto->id .' can not see ' . $post->id . '. Not sending message.');
continue;
}
// OK so we need to send the email.
// Does the user want this post in a digest? If so postpone it for now.
$maildigest = forum_get_user_maildigest_bulk($digests, $userto, $forum->id);
if ($maildigest > 0) {
// This user wants the mails to be in digest form.
$queue = new stdClass();
$queue->userid = $userto->id;
$queue->discussionid = $discussion->id;
$queue->postid = $post->id;
$queue->timemodified = $post->created;
$DB->insert_record('forum_queue', $queue);
continue;
}
// Prepare to actually send the post now, and build up the content.
$cleanforumname = str_replace('"', "'", strip_tags(format_string($forum->name)));
$userfrom->customheaders = array (
// Headers to make emails easier to track.
'List-Id: "' . $cleanforumname . '" ' . generate_email_messageid('moodleforum' . $forum->id),
'List-Help: ' . $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id,
'Message-ID: ' . forum_get_email_message_id($post->id, $userto->id),
'X-Course-Id: ' . $course->id,
'X-Course-Name: ' . format_string($course->fullname, true),
// Headers to help prevent auto-responders.
'Precedence: Bulk',
'X-Auto-Response-Suppress: All',
'Auto-Submitted: auto-generated',
);
$shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
// Generate a reply-to address from using the Inbound Message handler.
$replyaddress = null;
if ($userto->canpost[$discussion->id] && array_key_exists($post->id, $messageinboundhandlers)) {
$messageinboundgenerator->set_data($post->id, $messageinboundhandlers[$post->id]);
$replyaddress = $messageinboundgenerator->generate($userto->id);
}
if (!isset($userto->canpost[$discussion->id])) {
$canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
} else {
$canreply = $userto->canpost[$discussion->id];
}
$data = new \mod_forum\output\forum_post_email(
$course,
$cm,
$forum,
$discussion,
$post,
$userfrom,
$userto,
$canreply
);
$userfrom->customheaders[] = sprintf('List-Unsubscribe: <%s>',
$data->get_unsubscribediscussionlink());
if (!isset($userto->viewfullnames[$forum->id])) {
$data->viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
} else {
$data->viewfullnames = $userto->viewfullnames[$forum->id];
}
// Not all of these variables are used in the default language
// string but are made available to support custom subjects.
$a = new stdClass();
$a->subject = $data->get_subject();
$a->forumname = $cleanforumname;
$a->sitefullname = format_string($site->fullname);
$a->siteshortname = format_string($site->shortname);
$a->courseidnumber = $data->get_courseidnumber();
$a->coursefullname = $data->get_coursefullname();
$a->courseshortname = $data->get_coursename();
$postsubject = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
$rootid = forum_get_email_message_id($discussion->firstpost, $userto->id);
if ($post->parent) {
// This post is a reply, so add reply header (RFC 2822).
$parentid = forum_get_email_message_id($post->parent, $userto->id);
$userfrom->customheaders[] = "In-Reply-To: $parentid";
// If the post is deeply nested we also reference the parent message id and
// the root message id (if different) to aid threading when parts of the email
// conversation have been deleted (RFC1036).
if ($post->parent != $discussion->firstpost) {
$userfrom->customheaders[] = "References: $rootid $parentid";
} else {
$userfrom->customheaders[] = "References: $parentid";
}
}
// MS Outlook / Office uses poorly documented and non standard headers, including
// Thread-Topic which overrides the Subject and shouldn't contain Re: or Fwd: etc.
$a->subject = $discussion->name;
$threadtopic = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
$userfrom->customheaders[] = "Thread-Topic: $threadtopic";
$userfrom->customheaders[] = "Thread-Index: " . substr($rootid, 1, 28);
// Send the post now!
mtrace('Sending ', '');
$eventdata = new \core\message\message();
$eventdata->courseid = $course->id;
$eventdata->component = 'mod_forum';
$eventdata->name = 'posts';
$eventdata->userfrom = $userfrom;
$eventdata->userto = $userto;
$eventdata->subject = $postsubject;
$eventdata->fullmessage = $textout->render($data);
$eventdata->fullmessageformat = FORMAT_PLAIN;
$eventdata->fullmessagehtml = $htmlout->render($data);
$eventdata->notification = 1;
$eventdata->replyto = $replyaddress;
if (!empty($replyaddress)) {
// Add extra text to email messages if they can reply back.
$textfooter = "\n\n" . get_string('replytopostbyemail', 'mod_forum');
$htmlfooter = html_writer::tag('p', get_string('replytopostbyemail', 'mod_forum'));
$additionalcontent = array('fullmessage' => array('footer' => $textfooter),
'fullmessagehtml' => array('footer' => $htmlfooter));
$eventdata->set_additional_content('email', $additionalcontent);
}
$smallmessagestrings = new stdClass();
$smallmessagestrings->user = fullname($userfrom);
$smallmessagestrings->forumname = "$shortname: " . format_string($forum->name, true) . ": " . $discussion->name;
$smallmessagestrings->message = $post->message;
// Make sure strings are in message recipients language.
$eventdata->smallmessage = get_string_manager()->get_string('smallmessage', 'forum', $smallmessagestrings, $userto->lang);
$contexturl = new moodle_url('/mod/forum/discuss.php', array('d' => $discussion->id), 'p' . $post->id);
$eventdata->contexturl = $contexturl->out();
$eventdata->contexturlname = $discussion->name;
$mailresult = message_send($eventdata);
if (!$mailresult) {
mtrace("Error: mod/forum/lib.php forum_cron(): Could not send out mail for id $post->id to user $userto->id".
" ($userto->email) .. not trying again.");
$errorcount[$post->id]++;
} else {
$mailcount[$post->id]++;
// Mark post as read if forum_usermarksread is set off.
if (!$CFG->forum_usermarksread) {
$userto->markposts[$post->id] = $post->id;
}
}
mtrace('post ' . $post->id . ': ' . $post->subject);
}
// Mark processed posts as read.
if (get_user_preferences('forum_markasreadonnotification', 1, $userto->id) == 1) {
forum_tp_mark_posts_read($userto, $userto->markposts);
}
unset($userto);
}
}
if ($posts) {
foreach ($posts as $post) {
mtrace($mailcount[$post->id]." users were sent post $post->id, '$post->subject'");
if ($errorcount[$post->id]) {
$DB->set_field('forum_posts', 'mailed', FORUM_MAILED_ERROR, array('id' => $post->id));
}
}
}
// release some memory
unset($subscribedusers);
unset($mailcount);
unset($errorcount);
cron_setup_user();
$sitetimezone = core_date::get_server_timezone();
// Now see if there are any digest mails waiting to be sent, and if we should send them
mtrace('Starting digest processing...');
core_php_time_limit::raise(300); // terminate if not able to fetch all digests in 5 minutes
if (!isset($CFG->digestmailtimelast)) { // To catch the first time
set_config('digestmailtimelast', 0);
}
$timenow = time();
$digesttime = usergetmidnight($timenow, $sitetimezone) + ($CFG->digestmailtime * 3600);
// Delete any really old ones (normally there shouldn't be any)
$weekago = $timenow - (7 * 24 * 3600);
$DB->delete_records_select('forum_queue', "timemodified < ?", array($weekago));
mtrace ('Cleaned old digest records');
if ($CFG->digestmailtimelast < $digesttime and $timenow > $digesttime) {
mtrace('Sending forum digests: '.userdate($timenow, '', $sitetimezone));
$digestposts_rs = $DB->get_recordset_select('forum_queue', "timemodified < ?", array($digesttime));
if ($digestposts_rs->valid()) {
// We have work to do
$usermailcount = 0;
//caches - reuse the those filled before too
$discussionposts = array();
$userdiscussions = array();
foreach ($digestposts_rs as $digestpost) {
if (!isset($posts[$digestpost->postid])) {
if ($post = $DB->get_record('forum_posts', array('id' => $digestpost->postid))) {
$posts[$digestpost->postid] = $post;
} else {
continue;
}
}
$discussionid = $digestpost->discussionid;
if (!isset($discussions[$discussionid])) {
if ($discussion = $DB->get_record('forum_discussions', array('id' => $discussionid))) {
$discussions[$discussionid] = $discussion;
} else {
continue;
}
}
$forumid = $discussions[$discussionid]->forum;
if (!isset($forums[$forumid])) {
if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
$forums[$forumid] = $forum;
} else {
continue;
}
}
$courseid = $forums[$forumid]->course;
if (!isset($courses[$courseid])) {
if ($course = $DB->get_record('course', array('id' => $courseid))) {
$courses[$courseid] = $course;
} else {
continue;
}
}
if (!isset($coursemodules[$forumid])) {
if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
$coursemodules[$forumid] = $cm;
} else {
continue;
}
}
$userdiscussions[$digestpost->userid][$digestpost->discussionid] = $digestpost->discussionid;
$discussionposts[$digestpost->discussionid][$digestpost->postid] = $digestpost->postid;
}
$digestposts_rs->close(); /// Finished iteration, let's close the resultset
// Data collected, start sending out emails to each user
foreach ($userdiscussions as $userid => $thesediscussions) {
core_php_time_limit::raise(120); // terminate if processing of any account takes longer than 2 minutes
cron_setup_user();
mtrace(get_string('processingdigest', 'forum', $userid), '... ');
// First of all delete all the queue entries for this user
$DB->delete_records_select('forum_queue', "userid = ? AND timemodified < ?", array($userid, $digesttime));
// Init user caches - we keep the cache for one cycle only,
// otherwise it would unnecessarily consume memory.
if (array_key_exists($userid, $users) and isset($users[$userid]->username)) {
$userto = clone($users[$userid]);
} else {
$userto = $DB->get_record('user', array('id' => $userid));
forum_cron_minimise_user_record($userto);
}
$userto->viewfullnames = array();
$userto->canpost = array();
$userto->markposts = array();
// Override the language and timezone of the "current" user, so that
// mail is customised for the receiver.
cron_setup_user($userto);
$postsubject = get_string('digestmailsubject', 'forum', format_string($site->shortname, true));
$headerdata = new stdClass();
$headerdata->sitename = format_string($site->fullname, true);
$headerdata->userprefs = $CFG->wwwroot.'/user/forum.php?id='.$userid.'&course='.$site->id;
$posttext = get_string('digestmailheader', 'forum', $headerdata)."\n\n";
$headerdata->userprefs = ''.get_string('digestmailprefs', 'forum').'';
$posthtml = ''.get_string('digestmailheader', 'forum', $headerdata).'
'
. '
';
foreach ($thesediscussions as $discussionid) {
core_php_time_limit::raise(120); // to be reset for each post
$discussion = $discussions[$discussionid];
$forum = $forums[$discussion->forum];
$course = $courses[$forum->course];
$cm = $coursemodules[$forum->id];
//override language
cron_setup_user($userto, $course);
// Fill caches
if (!isset($userto->viewfullnames[$forum->id])) {
$modcontext = context_module::instance($cm->id);
$userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
}
if (!isset($userto->canpost[$discussion->id])) {
$modcontext = context_module::instance($cm->id);
$userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
}
$strforums = get_string('forums', 'forum');
$canunsubscribe = ! \mod_forum\subscriptions::is_forcesubscribed($forum);
$canreply = $userto->canpost[$discussion->id];
$shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
$posttext .= "\n \n";
$posttext .= '=====================================================================';
$posttext .= "\n \n";
$posttext .= "$shortname -> $strforums -> ".format_string($forum->name,true);
if ($discussion->name != $forum->name) {
$posttext .= " -> ".format_string($discussion->name,true);
}
$posttext .= "\n";
$posttext .= $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
$posttext .= "\n";
$posthtml .= "".
"wwwroot/course/view.php?id=$course->id\">$shortname -> ".
"wwwroot/mod/forum/index.php?id=$course->id\">$strforums -> ".
"wwwroot/mod/forum/view.php?f=$forum->id\">".format_string($forum->name,true)."";
if ($discussion->name == $forum->name) {
$posthtml .= "
";
} else {
$posthtml .= " -> wwwroot/mod/forum/discuss.php?d=$discussion->id\">".format_string($discussion->name,true)."";
}
$posthtml .= '';
$postsarray = $discussionposts[$discussionid];
sort($postsarray);
$sentcount = 0;
foreach ($postsarray as $postid) {
$post = $posts[$postid];
if (array_key_exists($post->userid, $users)) { // we might know him/her already
$userfrom = $users[$post->userid];
if (!isset($userfrom->idnumber)) {
$userfrom = $DB->get_record('user', array('id' => $userfrom->id));
forum_cron_minimise_user_record($userfrom);
}
} else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
forum_cron_minimise_user_record($userfrom);
if ($userscount <= FORUM_CRON_USER_CACHE) {
$userscount++;
$users[$userfrom->id] = $userfrom;
}
} else {
mtrace('Could not find user '.$post->userid);
continue;
}
if (!isset($userfrom->groups[$forum->id])) {
if (!isset($userfrom->groups)) {
$userfrom->groups = array();
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups = array();
}
}
$userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
if (isset($users[$userfrom->id])) {
$users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
}
}
// Headers to help prevent auto-responders.
$userfrom->customheaders = array(
"Precedence: Bulk",
'X-Auto-Response-Suppress: All',
'Auto-Submitted: auto-generated',
);
$maildigest = forum_get_user_maildigest_bulk($digests, $userto, $forum->id);
if (!isset($userto->canpost[$discussion->id])) {
$canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
} else {
$canreply = $userto->canpost[$discussion->id];
}
$data = new \mod_forum\output\forum_post_email(
$course,
$cm,
$forum,
$discussion,
$post,
$userfrom,
$userto,
$canreply
);
if (!isset($userto->viewfullnames[$forum->id])) {
$data->viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
} else {
$data->viewfullnames = $userto->viewfullnames[$forum->id];
}
if ($maildigest == 2) {
// Subjects and link only.
$posttext .= $textdigestbasicout->render($data);
$posthtml .= $htmldigestbasicout->render($data);
} else {
// The full treatment.
$posttext .= $textdigestfullout->render($data);
$posthtml .= $htmldigestfullout->render($data);
// Create an array of postid's for this user to mark as read.
if (!$CFG->forum_usermarksread) {
$userto->markposts[$post->id] = $post->id;
}
}
$sentcount++;
}
$footerlinks = array();
if ($canunsubscribe) {
$footerlinks[] = "wwwroot/mod/forum/subscribe.php?id=$forum->id\">" . get_string("unsubscribe", "forum") . "";
} else {
$footerlinks[] = get_string("everyoneissubscribed", "forum");
}
$footerlinks[] = "" . get_string("digestmailpost", "forum") . '';
$posthtml .= "\n
" . implode(' ', $footerlinks) . '
';
$posthtml .= '
';
}
if (empty($userto->mailformat) || $userto->mailformat != 1) {
// This user DOESN'T want to receive HTML
$posthtml = '';
}
$eventdata = new \core\message\message();
$eventdata->courseid = SITEID;
$eventdata->component = 'mod_forum';
$eventdata->name = 'digests';
$eventdata->userfrom = core_user::get_noreply_user();
$eventdata->userto = $userto;
$eventdata->subject = $postsubject;
$eventdata->fullmessage = $posttext;
$eventdata->fullmessageformat = FORMAT_PLAIN;
$eventdata->fullmessagehtml = $posthtml;
$eventdata->notification = 1;
$eventdata->smallmessage = get_string('smallmessagedigest', 'forum', $sentcount);
$mailresult = message_send($eventdata);
if (!$mailresult) {
mtrace("ERROR: mod/forum/cron.php: Could not send out digest mail to user $userto->id ".
"($userto->email)... not trying again.");
} else {
mtrace("success.");
$usermailcount++;
// Mark post as read if forum_usermarksread is set off
if (get_user_preferences('forum_markasreadonnotification', 1, $userto->id) == 1) {
forum_tp_mark_posts_read($userto, $userto->markposts);
}
}
}
}
/// We have finishied all digest emails, update $CFG->digestmailtimelast
set_config('digestmailtimelast', $timenow);
}
cron_setup_user();
if (!empty($usermailcount)) {
mtrace(get_string('digestsentusers', 'forum', $usermailcount));
}
if (!empty($CFG->forum_lastreadclean)) {
$timenow = time();
if ($CFG->forum_lastreadclean + (24*3600) < $timenow) {
set_config('forum_lastreadclean', $timenow);
mtrace('Removing old forum read tracking info...');
forum_tp_clean_read_records();
}
} else {
set_config('forum_lastreadclean', time());
}
return true;
}
/**
*
* @param object $course
* @param object $user
* @param object $mod TODO this is not used in this function, refactor
* @param object $forum
* @return object A standard object with 2 variables: info (number of posts for this user) and time (last modified)
*/
function forum_user_outline($course, $user, $mod, $forum) {
global $CFG;
require_once("$CFG->libdir/gradelib.php");
$grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
if (empty($grades->items[0]->grades)) {
$grade = false;
} else {
$grade = reset($grades->items[0]->grades);
}
$count = forum_count_user_posts($forum->id, $user->id);
if ($count && $count->postcount > 0) {
$result = new stdClass();
$result->info = get_string("numposts", "forum", $count->postcount);
$result->time = $count->lastpost;
if ($grade) {
$result->info .= ', ' . get_string('grade') . ': ' . $grade->str_long_grade;
}
return $result;
} else if ($grade) {
$result = new stdClass();
$result->info = get_string('grade') . ': ' . $grade->str_long_grade;
//datesubmitted == time created. dategraded == time modified or time overridden
//if grade was last modified by the user themselves use date graded. Otherwise use date submitted
//TODO: move this copied & pasted code somewhere in the grades API. See MDL-26704
if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
$result->time = $grade->dategraded;
} else {
$result->time = $grade->datesubmitted;
}
return $result;
}
return NULL;
}
/**
* @global object
* @global object
* @param object $coure
* @param object $user
* @param object $mod
* @param object $forum
*/
function forum_user_complete($course, $user, $mod, $forum) {
global $CFG,$USER, $OUTPUT;
require_once("$CFG->libdir/gradelib.php");
$grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
if (!empty($grades->items[0]->grades)) {
$grade = reset($grades->items[0]->grades);
echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
if ($grade->str_feedback) {
echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
}
}
if ($posts = forum_get_user_posts($forum->id, $user->id)) {
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
print_error('invalidcoursemodule');
}
$discussions = forum_get_user_involved_discussions($forum->id, $user->id);
foreach ($posts as $post) {
if (!isset($discussions[$post->discussion])) {
continue;
}
$discussion = $discussions[$post->discussion];
forum_print_post($post, $discussion, $forum, $cm, $course, false, false, false);
}
} else {
echo "".get_string("noposts", "forum")."
";
}
}
/**
* Filters the forum discussions according to groups membership and config.
*
* @deprecated since 3.3
* @todo The final deprecation of this function will take place in Moodle 3.7 - see MDL-57487.
* @since Moodle 2.8, 2.7.1, 2.6.4
* @param array $discussions Discussions with new posts array
* @return array Forums with the number of new posts
*/
function forum_filter_user_groups_discussions($discussions) {
debugging('The function forum_filter_user_groups_discussions() is now deprecated.', DEBUG_DEVELOPER);
// Group the remaining discussions posts by their forumid.
$filteredforums = array();
// Discard not visible groups.
foreach ($discussions as $discussion) {
// Course data is already cached.
$instances = get_fast_modinfo($discussion->course)->get_instances();
$forum = $instances['forum'][$discussion->forum];
// Continue if the user should not see this discussion.
if (!forum_is_user_group_discussion($forum, $discussion->groupid)) {
continue;
}
// Grouping results by forum.
if (empty($filteredforums[$forum->instance])) {
$filteredforums[$forum->instance] = new stdClass();
$filteredforums[$forum->instance]->id = $forum->id;
$filteredforums[$forum->instance]->count = 0;
}
$filteredforums[$forum->instance]->count += $discussion->count;
}
return $filteredforums;
}
/**
* Returns whether the discussion group is visible by the current user or not.
*
* @since Moodle 2.8, 2.7.1, 2.6.4
* @param cm_info $cm The discussion course module
* @param int $discussiongroupid The discussion groupid
* @return bool
*/
function forum_is_user_group_discussion(cm_info $cm, $discussiongroupid) {
if ($discussiongroupid == -1 || $cm->effectivegroupmode != SEPARATEGROUPS) {
return true;
}
if (isguestuser()) {
return false;
}
if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id)) ||
in_array($discussiongroupid, $cm->get_modinfo()->get_groups($cm->groupingid))) {
return true;
}
return false;
}
/**
* @deprecated since 3.3
* @todo The final deprecation of this function will take place in Moodle 3.7 - see MDL-57487.
* @global object
* @global object
* @global object
* @param array $courses
* @param array $htmlarray
*/
function forum_print_overview($courses,&$htmlarray) {
global $USER, $CFG, $DB, $SESSION;
debugging('The function forum_print_overview() is now deprecated.', DEBUG_DEVELOPER);
if (empty($courses) || !is_array($courses) || count($courses) == 0) {
return array();
}
if (!$forums = get_all_instances_in_courses('forum',$courses)) {
return;
}
// Courses to search for new posts
$coursessqls = array();
$params = array();
foreach ($courses as $course) {
// If the user has never entered into the course all posts are pending
if ($course->lastaccess == 0) {
$coursessqls[] = '(d.course = ?)';
$params[] = $course->id;
// Only posts created after the course last access
} else {
$coursessqls[] = '(d.course = ? AND p.created > ?)';
$params[] = $course->id;
$params[] = $course->lastaccess;
}
}
$params[] = $USER->id;
$coursessql = implode(' OR ', $coursessqls);
$sql = "SELECT d.id, d.forum, d.course, d.groupid, COUNT(*) as count "
.'FROM {forum_discussions} d '
.'JOIN {forum_posts} p ON p.discussion = d.id '
."WHERE ($coursessql) "
.'AND p.deleted <> 1 '
.'AND p.userid != ? '
.'AND (d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?)) '
.'GROUP BY d.id, d.forum, d.course, d.groupid '
.'ORDER BY d.course, d.forum';
$params[] = time();
$params[] = time();
// Avoid warnings.
if (!$discussions = $DB->get_records_sql($sql, $params)) {
$discussions = array();
}
$forumsnewposts = forum_filter_user_groups_discussions($discussions);
// also get all forum tracking stuff ONCE.
$trackingforums = array();
foreach ($forums as $forum) {
if (forum_tp_can_track_forums($forum)) {
$trackingforums[$forum->id] = $forum;
}
}
if (count($trackingforums) > 0) {
$cutoffdate = isset($CFG->forum_oldpostdays) ? (time() - ($CFG->forum_oldpostdays*24*60*60)) : 0;
$sql = 'SELECT d.forum,d.course,COUNT(p.id) AS count '.
' FROM {forum_posts} p '.
' JOIN {forum_discussions} d ON p.discussion = d.id '.
' LEFT JOIN {forum_read} r ON r.postid = p.id AND r.userid = ? WHERE p.deleted <> 1 AND (';
$params = array($USER->id);
foreach ($trackingforums as $track) {
$sql .= '(d.forum = ? AND (d.groupid = -1 OR d.groupid = 0 OR d.groupid = ?)) OR ';
$params[] = $track->id;
if (isset($SESSION->currentgroup[$track->course])) {
$groupid = $SESSION->currentgroup[$track->course];
} else {
// get first groupid
$groupids = groups_get_all_groups($track->course, $USER->id);
if ($groupids) {
reset($groupids);
$groupid = key($groupids);
$SESSION->currentgroup[$track->course] = $groupid;
} else {
$groupid = 0;
}
unset($groupids);
}
$params[] = $groupid;
}
$sql = substr($sql,0,-3); // take off the last OR
$sql .= ') AND p.modified >= ? AND r.id is NULL ';
$sql .= 'AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)) ';
$sql .= 'GROUP BY d.forum,d.course';
$params[] = $cutoffdate;
$params[] = time();
$params[] = time();
if (!$unread = $DB->get_records_sql($sql, $params)) {
$unread = array();
}
} else {
$unread = array();
}
if (empty($unread) and empty($forumsnewposts)) {
return;
}
$strforum = get_string('modulename','forum');
foreach ($forums as $forum) {
$str = '';
$count = 0;
$thisunread = 0;
$showunread = false;
// either we have something from logs, or trackposts, or nothing.
if (array_key_exists($forum->id, $forumsnewposts) && !empty($forumsnewposts[$forum->id])) {
$count = $forumsnewposts[$forum->id]->count;
}
if (array_key_exists($forum->id,$unread)) {
$thisunread = $unread[$forum->id]->count;
$showunread = true;
}
if ($count > 0 || $thisunread > 0) {
$str .= '';
$str .= '
';
$str .= get_string('overviewnumpostssince', 'forum', $count)."";
if (!empty($showunread)) {
$str .= '
'.get_string('overviewnumunread', 'forum', $thisunread).'
';
}
$str .= '
';
$topicclass = 'topic starter';
if (FORUM_DISCUSSION_PINNED == $post->pinned) {
$topicclass .= ' pinned';
}
echo '| ';
if (FORUM_DISCUSSION_PINNED == $post->pinned) {
echo $OUTPUT->pix_icon('i/pinned', get_string('discussionpinned', 'forum'), 'mod_forum');
}
$canalwaysseetimedpost = $USER->id == $post->userid || $canviewhiddentimedposts;
if ($timeddiscussion && $canalwaysseetimedpost) {
echo $PAGE->get_renderer('mod_forum')->timed_discussion_tooltip($post, empty($timedoutsidewindow));
}
echo ''.$post->subject.'';
echo " | \n";
// Picture
$postuser = new stdClass();
$postuserfields = explode(',', user_picture::fields());
$postuser = username_load_fields_from_object($postuser, $post, null, $postuserfields);
$postuser->id = $post->userid;
echo '';
echo '';
echo " | \n";
// Group picture
if ($group !== -1) { // Groups are active - group is a group data object or NULL
echo '';
if (!empty($group->picture) and empty($group->hidepicture)) {
if ($canviewparticipants && $COURSE->groupmode) {
$picturelink = true;
} else {
$picturelink = false;
}
print_group_picture($group, $forum->course, false, false, $picturelink);
} else if (isset($group->id)) {
if ($canviewparticipants && $COURSE->groupmode) {
echo ''.$group->name.'';
} else {
echo $group->name;
}
}
echo " | \n";
}
if (has_capability('mod/forum:viewdiscussion', $modcontext)) { // Show the column with replies
echo '';
echo '';
echo $post->replies.'';
echo " | \n";
if ($cantrack) {
echo '';
if ($forumtracked) {
if ($post->unread > 0) {
echo '';
echo '';
echo $post->unread;
echo '';
echo '' .
$OUTPUT->pix_icon('t/markasread', $strmarkalldread) . '';
echo '';
} else {
echo '';
echo $post->unread;
echo '';
}
} else {
echo '';
echo '-';
echo '';
}
echo " | \n";
}
}
echo '';
$usedate = (empty($post->timemodified)) ? $post->modified : $post->timemodified; // Just in case
$parenturl = '';
$usermodified = new stdClass();
$usermodified->id = $post->usermodified;
$usermodified = username_load_fields_from_object($usermodified, $post, 'um');
// In QA forums we check that the user can view participants.
if ($forum->type !== 'qanda' || $canviewparticipants) {
echo ''.
fullname($usermodified, $canviewfullnames).'
';
$parenturl = (empty($post->lastpostid)) ? '' : '&parent='.$post->lastpostid;
}
echo ''.
userdate($usedate, $datestring).'';
echo " | \n";
// is_guest should be used here as this also checks whether the user is a guest in the current course.
// Guests and visitors cannot subscribe - only enrolled users.
if ((!is_guest($modcontext, $USER) && isloggedin()) && has_capability('mod/forum:viewdiscussion', $modcontext)) {
// Discussion subscription.
if (\mod_forum\subscriptions::is_subscribable($forum)) {
echo '';
echo forum_get_discussion_subscription_icon($forum, $post->discussion);
echo ' | ';
}
}
echo "
\n\n";
}
/**
* Return the markup for the discussion subscription toggling icon.
*
* @param stdClass $forum The forum object.
* @param int $discussionid The discussion to create an icon for.
* @return string The generated markup.
*/
function forum_get_discussion_subscription_icon($forum, $discussionid, $returnurl = null, $includetext = false) {
global $USER, $OUTPUT, $PAGE;
if ($returnurl === null && $PAGE->url) {
$returnurl = $PAGE->url->out();
}
$o = '';
$subscriptionstatus = \mod_forum\subscriptions::is_subscribed($USER->id, $forum, $discussionid);
$subscriptionlink = new moodle_url('/mod/forum/subscribe.php', array(
'sesskey' => sesskey(),
'id' => $forum->id,
'd' => $discussionid,
'returnurl' => $returnurl,
));
if ($includetext) {
$o .= $subscriptionstatus ? get_string('subscribed', 'mod_forum') : get_string('notsubscribed', 'mod_forum');
}
if ($subscriptionstatus) {
$output = $OUTPUT->pix_icon('t/subscribed', get_string('clicktounsubscribe', 'forum'), 'mod_forum');
if ($includetext) {
$output .= get_string('subscribed', 'mod_forum');
}
return html_writer::link($subscriptionlink, $output, array(
'title' => get_string('clicktounsubscribe', 'forum'),
'class' => 'discussiontoggle iconsmall',
'data-forumid' => $forum->id,
'data-discussionid' => $discussionid,
'data-includetext' => $includetext,
));
} else {
$output = $OUTPUT->pix_icon('t/unsubscribed', get_string('clicktosubscribe', 'forum'), 'mod_forum');
if ($includetext) {
$output .= get_string('notsubscribed', 'mod_forum');
}
return html_writer::link($subscriptionlink, $output, array(
'title' => get_string('clicktosubscribe', 'forum'),
'class' => 'discussiontoggle iconsmall',
'data-forumid' => $forum->id,
'data-discussionid' => $discussionid,
'data-includetext' => $includetext,
));
}
}
/**
* Return a pair of spans containing classes to allow the subscribe and
* unsubscribe icons to be pre-loaded by a browser.
*
* @return string The generated markup
*/
function forum_get_discussion_subscription_icon_preloaders() {
$o = '';
$o .= html_writer::span(' ', 'preload-subscribe');
$o .= html_writer::span(' ', 'preload-unsubscribe');
return $o;
}
/**
* Print the drop down that allows the user to select how they want to have
* the discussion displayed.
*
* @param int $id forum id if $forumtype is 'single',
* discussion id for any other forum type
* @param mixed $mode forum layout mode
* @param string $forumtype optional
*/
function forum_print_mode_form($id, $mode, $forumtype='') {
global $OUTPUT;
if ($forumtype == 'single') {
$select = new single_select(new moodle_url("/mod/forum/view.php", array('f'=>$id)), 'mode', forum_get_layout_modes(), $mode, null, "mode");
$select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
$select->class = "forummode";
} else {
$select = new single_select(new moodle_url("/mod/forum/discuss.php", array('d'=>$id)), 'mode', forum_get_layout_modes(), $mode, null, "mode");
$select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
}
echo $OUTPUT->render($select);
}
/**
* @global object
* @param object $course
* @param string $search
* @return string
*/
function forum_search_form($course, $search='') {
global $CFG, $PAGE;
$forumsearch = new \mod_forum\output\quick_search_form($course->id, $search);
$output = $PAGE->get_renderer('mod_forum');
return $output->render($forumsearch);
}
/**
* @global object
* @global object
*/
function forum_set_return() {
global $CFG, $SESSION;
if (! isset($SESSION->fromdiscussion)) {
$referer = get_local_referer(false);
// If the referer is NOT a login screen then save it.
if (! strncasecmp("$CFG->wwwroot/login", $referer, 300)) {
$SESSION->fromdiscussion = $referer;
}
}
}
/**
* @global object
* @param string|\moodle_url $default
* @return string
*/
function forum_go_back_to($default) {
global $SESSION;
if (!empty($SESSION->fromdiscussion)) {
$returnto = $SESSION->fromdiscussion;
unset($SESSION->fromdiscussion);
return $returnto;
} else {
return $default;
}
}
/**
* Given a discussion object that is being moved to $forumto,
* this function checks all posts in that discussion
* for attachments, and if any are found, these are
* moved to the new forum directory.
*
* @global object
* @param object $discussion
* @param int $forumfrom source forum id
* @param int $forumto target forum id
* @return bool success
*/
function forum_move_attachments($discussion, $forumfrom, $forumto) {
global $DB;
$fs = get_file_storage();
$newcm = get_coursemodule_from_instance('forum', $forumto);
$oldcm = get_coursemodule_from_instance('forum', $forumfrom);
$newcontext = context_module::instance($newcm->id);
$oldcontext = context_module::instance($oldcm->id);
// loop through all posts, better not use attachment flag ;-)
if ($posts = $DB->get_records('forum_posts', array('discussion'=>$discussion->id), '', 'id, attachment')) {
foreach ($posts as $post) {
$fs->move_area_files_to_new_context($oldcontext->id,
$newcontext->id, 'mod_forum', 'post', $post->id);
$attachmentsmoved = $fs->move_area_files_to_new_context($oldcontext->id,
$newcontext->id, 'mod_forum', 'attachment', $post->id);
if ($attachmentsmoved > 0 && $post->attachment != '1') {
// Weird - let's fix it
$post->attachment = '1';
$DB->update_record('forum_posts', $post);
} else if ($attachmentsmoved == 0 && $post->attachment != '') {
// Weird - let's fix it
$post->attachment = '';
$DB->update_record('forum_posts', $post);
}
}
}
return true;
}
/**
* Returns attachments as formated text/html optionally with separate images
*
* @global object
* @global object
* @global object
* @param object $post
* @param object $cm
* @param string $type html/text/separateimages
* @return mixed string or array of (html text withouth images and image HTML)
*/
function forum_print_attachments($post, $cm, $type) {
global $CFG, $DB, $USER, $OUTPUT;
if (empty($post->attachment)) {
return $type !== 'separateimages' ? '' : array('', '');
}
if (!in_array($type, array('separateimages', 'html', 'text'))) {
return $type !== 'separateimages' ? '' : array('', '');
}
if (!$context = context_module::instance($cm->id)) {
return $type !== 'separateimages' ? '' : array('', '');
}
$strattachment = get_string('attachment', 'forum');
$fs = get_file_storage();
$imagereturn = '';
$output = '';
$canexport = !empty($CFG->enableportfolios) && (has_capability('mod/forum:exportpost', $context) || ($post->userid == $USER->id && has_capability('mod/forum:exportownpost', $context)));
if ($canexport) {
require_once($CFG->libdir.'/portfoliolib.php');
}
// We retrieve all files according to the time that they were created. In the case that several files were uploaded
// at the sametime (e.g. in the case of drag/drop upload) we revert to using the filename.
$files = $fs->get_area_files($context->id, 'mod_forum', 'attachment', $post->id, "filename", false);
if ($files) {
if ($canexport) {
$button = new portfolio_add_button();
}
foreach ($files as $file) {
$filename = $file->get_filename();
$mimetype = $file->get_mimetype();
$iconimage = $OUTPUT->pix_icon(file_file_icon($file), get_mimetype_description($file), 'moodle', array('class' => 'icon'));
$path = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$context->id.'/mod_forum/attachment/'.$post->id.'/'.$filename);
if ($type == 'html') {
$output .= "$iconimage ";
$output .= "".s($filename)."";
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
$output .= "
";
} else if ($type == 'text') {
$output .= "$strattachment ".s($filename).":\n$path\n";
} else { //'returnimages'
if (in_array($mimetype, array('image/gif', 'image/jpeg', 'image/png'))) {
// Image attachments don't get printed as links
$imagereturn .= "
![\"\"](\"$path\")
";
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$imagereturn .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
} else {
$output .= "$iconimage ";
$output .= format_text("".s($filename)."", FORMAT_HTML, array('context'=>$context));
if ($canexport) {
$button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
$button->set_format_by_file($file);
$output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
}
$output .= '
';
}
}
if (!empty($CFG->enableplagiarism)) {
require_once($CFG->libdir.'/plagiarismlib.php');
$output .= plagiarism_get_links(array('userid' => $post->userid,
'file' => $file,
'cmid' => $cm->id,
'course' => $cm->course,
'forum' => $cm->instance));
$output .= '
';
}
}
}
if ($type !== 'separateimages') {
return $output;
} else {
return array($output, $imagereturn);
}
}
////////////////////////////////////////////////////////////////////////////////
// File API //
////////////////////////////////////////////////////////////////////////////////
/**
* Lists all browsable file areas
*
* @package mod_forum
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @return array
*/
function forum_get_file_areas($course, $cm, $context) {
return array(
'attachment' => get_string('areaattachment', 'mod_forum'),
'post' => get_string('areapost', 'mod_forum'),
);
}
/**
* File browsing support for forum module.
*
* @package mod_forum
* @category files
* @param stdClass $browser file browser object
* @param stdClass $areas file areas
* @param stdClass $course course object
* @param stdClass $cm course module
* @param stdClass $context context module
* @param string $filearea file area
* @param int $itemid item ID
* @param string $filepath file path
* @param string $filename file name
* @return file_info instance or null if not found
*/
function forum_get_file_info($browser, $areas, $course, $cm, $context, $filearea, $itemid, $filepath, $filename) {
global $CFG, $DB, $USER;
if ($context->contextlevel != CONTEXT_MODULE) {
return null;
}
// filearea must contain a real area
if (!isset($areas[$filearea])) {
return null;
}
// Note that forum_user_can_see_post() additionally allows access for parent roles
// and it explicitly checks qanda forum type, too. One day, when we stop requiring
// course:managefiles, we will need to extend this.
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return null;
}
if (is_null($itemid)) {
require_once($CFG->dirroot.'/mod/forum/locallib.php');
return new forum_file_info_container($browser, $course, $cm, $context, $areas, $filearea);
}
static $cached = array();
// $cached will store last retrieved post, discussion and forum. To make sure that the cache
// is cleared between unit tests we check if this is the same session
if (!isset($cached['sesskey']) || $cached['sesskey'] != sesskey()) {
$cached = array('sesskey' => sesskey());
}
if (isset($cached['post']) && $cached['post']->id == $itemid) {
$post = $cached['post'];
} else if ($post = $DB->get_record('forum_posts', array('id' => $itemid))) {
$cached['post'] = $post;
} else {
return null;
}
if (isset($cached['discussion']) && $cached['discussion']->id == $post->discussion) {
$discussion = $cached['discussion'];
} else if ($discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion))) {
$cached['discussion'] = $discussion;
} else {
return null;
}
if (isset($cached['forum']) && $cached['forum']->id == $cm->instance) {
$forum = $cached['forum'];
} else if ($forum = $DB->get_record('forum', array('id' => $cm->instance))) {
$cached['forum'] = $forum;
} else {
return null;
}
$fs = get_file_storage();
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
if (!($storedfile = $fs->get_file($context->id, 'mod_forum', $filearea, $itemid, $filepath, $filename))) {
return null;
}
// Checks to see if the user can manage files or is the owner.
// TODO MDL-33805 - Do not use userid here and move the capability check above.
if (!has_capability('moodle/course:managefiles', $context) && $storedfile->get_userid() != $USER->id) {
return null;
}
// Make sure groups allow this user to see this file
if ($discussion->groupid > 0 && !has_capability('moodle/site:accessallgroups', $context)) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS && !groups_is_member($discussion->groupid)) {
return null;
}
}
// Make sure we're allowed to see it...
if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
return null;
}
$urlbase = $CFG->wwwroot.'/pluginfile.php';
return new file_info_stored($browser, $context, $storedfile, $urlbase, $itemid, true, true, false, false);
}
/**
* Serves the forum attachments. Implements needed access control ;-)
*
* @package mod_forum
* @category files
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @param string $filearea file area
* @param array $args extra arguments
* @param bool $forcedownload whether or not force download
* @param array $options additional options affecting the file serving
* @return bool false if file not found, does not return if found - justsend the file
*/
function forum_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload, array $options=array()) {
global $CFG, $DB;
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_course_login($course, true, $cm);
$areas = forum_get_file_areas($course, $cm, $context);
// filearea must contain a real area
if (!isset($areas[$filearea])) {
return false;
}
$postid = (int)array_shift($args);
if (!$post = $DB->get_record('forum_posts', array('id'=>$postid))) {
return false;
}
if (!$discussion = $DB->get_record('forum_discussions', array('id'=>$post->discussion))) {
return false;
}
if (!$forum = $DB->get_record('forum', array('id'=>$cm->instance))) {
return false;
}
$fs = get_file_storage();
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_forum/$filearea/$postid/$relativepath";
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// Make sure groups allow this user to see this file
if ($discussion->groupid > 0) {
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode == SEPARATEGROUPS) {
if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $context)) {
return false;
}
}
}
// Make sure we're allowed to see it...
if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
return false;
}
// finally send the file
send_stored_file($file, 0, 0, true, $options); // download MUST be forced - security!
}
/**
* If successful, this function returns the name of the file
*
* @global object
* @param object $post is a full post record, including course and forum
* @param object $forum
* @param object $cm
* @param mixed $mform
* @param string $unused
* @return bool
*/
function forum_add_attachment($post, $forum, $cm, $mform=null, $unused=null) {
global $DB;
if (empty($mform)) {
return false;
}
if (empty($post->attachments)) {
return true; // Nothing to do
}
$context = context_module::instance($cm->id);
$info = file_get_draft_area_info($post->attachments);
$present = ($info['filecount']>0) ? '1' : '';
file_save_draft_area_files($post->attachments, $context->id, 'mod_forum', 'attachment', $post->id,
mod_forum_post_form::attachment_options($forum));
$DB->set_field('forum_posts', 'attachment', $present, array('id'=>$post->id));
return true;
}
/**
* Add a new post in an existing discussion.
*
* @param stdClass $post The post data
* @param mixed $mform The submitted form
* @param string $unused
* @return int
*/
function forum_add_new_post($post, $mform, $unused = null) {
global $USER, $DB;
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion));
$forum = $DB->get_record('forum', array('id' => $discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$context = context_module::instance($cm->id);
$post->created = $post->modified = time();
$post->mailed = FORUM_MAILED_PENDING;
$post->userid = $USER->id;
$post->attachment = "";
if (!isset($post->totalscore)) {
$post->totalscore = 0;
}
if (!isset($post->mailnow)) {
$post->mailnow = 0;
}
$post->id = $DB->insert_record("forum_posts", $post);
$post->message = file_save_draft_area_files($post->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, null), $post->message);
$DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
forum_add_attachment($post, $forum, $cm, $mform);
// Update discussion modified date
$DB->set_field("forum_discussions", "timemodified", $post->modified, array("id" => $post->discussion));
$DB->set_field("forum_discussions", "usermodified", $post->userid, array("id" => $post->discussion));
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($post->userid, $post);
}
if (isset($post->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, $context, $post->tags);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
forum_trigger_content_uploaded_event($post, $cm, 'forum_add_new_post');
return $post->id;
}
/**
* Update a post.
*
* @param stdClass $newpost The post to update
* @param mixed $mform The submitted form
* @param string $unused
* @return bool
*/
function forum_update_post($newpost, $mform, $unused = null) {
global $DB, $USER;
$post = $DB->get_record('forum_posts', array('id' => $newpost->id));
$discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion));
$forum = $DB->get_record('forum', array('id' => $discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$context = context_module::instance($cm->id);
// Allowed modifiable fields.
$modifiablefields = [
'subject',
'message',
'messageformat',
'messagetrust',
'timestart',
'timeend',
'pinned',
'attachments',
];
foreach ($modifiablefields as $field) {
if (isset($newpost->{$field})) {
$post->{$field} = $newpost->{$field};
}
}
$post->modified = time();
// Last post modified tracking.
$discussion->timemodified = $post->modified;
$discussion->usermodified = $post->userid;
if (!$post->parent) { // Post is a discussion starter - update discussion title and times too
$discussion->name = $post->subject;
$discussion->timestart = $post->timestart;
$discussion->timeend = $post->timeend;
if (isset($post->pinned)) {
$discussion->pinned = $post->pinned;
}
}
$post->message = file_save_draft_area_files($newpost->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, $post->id), $post->message);
$DB->update_record('forum_posts', $post);
$DB->update_record('forum_discussions', $discussion);
forum_add_attachment($post, $forum, $cm, $mform);
if (isset($newpost->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, $context, $newpost->tags);
}
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($USER->id, $post);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
forum_trigger_content_uploaded_event($post, $cm, 'forum_update_post');
return true;
}
/**
* Given an object containing all the necessary data,
* create a new discussion and return the id
*
* @param object $post
* @param mixed $mform
* @param string $unused
* @param int $userid
* @return object
*/
function forum_add_discussion($discussion, $mform=null, $unused=null, $userid=null) {
global $USER, $CFG, $DB;
$timenow = isset($discussion->timenow) ? $discussion->timenow : time();
if (is_null($userid)) {
$userid = $USER->id;
}
// The first post is stored as a real post, and linked
// to from the discuss entry.
$forum = $DB->get_record('forum', array('id'=>$discussion->forum));
$cm = get_coursemodule_from_instance('forum', $forum->id);
$post = new stdClass();
$post->discussion = 0;
$post->parent = 0;
$post->userid = $userid;
$post->created = $timenow;
$post->modified = $timenow;
$post->mailed = FORUM_MAILED_PENDING;
$post->subject = $discussion->name;
$post->message = $discussion->message;
$post->messageformat = $discussion->messageformat;
$post->messagetrust = $discussion->messagetrust;
$post->attachments = isset($discussion->attachments) ? $discussion->attachments : null;
$post->forum = $forum->id; // speedup
$post->course = $forum->course; // speedup
$post->mailnow = $discussion->mailnow;
$post->id = $DB->insert_record("forum_posts", $post);
// TODO: Fix the calling code so that there always is a $cm when this function is called
if (!empty($cm->id) && !empty($discussion->itemid)) { // In "single simple discussions" this may not exist yet
$context = context_module::instance($cm->id);
$text = file_save_draft_area_files($discussion->itemid, $context->id, 'mod_forum', 'post', $post->id,
mod_forum_post_form::editor_options($context, null), $post->message);
$DB->set_field('forum_posts', 'message', $text, array('id'=>$post->id));
}
// Now do the main entry for the discussion, linking to this first post
$discussion->firstpost = $post->id;
$discussion->timemodified = $timenow;
$discussion->usermodified = $post->userid;
$discussion->userid = $userid;
$discussion->assessed = 0;
$post->discussion = $DB->insert_record("forum_discussions", $discussion);
// Finally, set the pointer on the post.
$DB->set_field("forum_posts", "discussion", $post->discussion, array("id"=>$post->id));
if (!empty($cm->id)) {
forum_add_attachment($post, $forum, $cm, $mform, $unused);
}
if (isset($discussion->tags)) {
core_tag_tag::set_item_tags('mod_forum', 'forum_posts', $post->id, context_module::instance($cm->id), $discussion->tags);
}
if (forum_tp_can_track_forums($forum) && forum_tp_is_tracked($forum)) {
forum_tp_mark_post_read($post->userid, $post);
}
// Let Moodle know that assessable content is uploaded (eg for plagiarism detection)
if (!empty($cm->id)) {
forum_trigger_content_uploaded_event($post, $cm, 'forum_add_discussion');
}
return $post->discussion;
}
/**
* Deletes a discussion and handles all associated cleanup.
*
* @global object
* @param object $discussion Discussion to delete
* @param bool $fulldelete True when deleting entire forum
* @param object $course Course
* @param object $cm Course-module
* @param object $forum Forum
* @return bool
*/
function forum_delete_discussion($discussion, $fulldelete, $course, $cm, $forum) {
global $DB, $CFG;
require_once($CFG->libdir.'/completionlib.php');
$result = true;
if ($posts = $DB->get_records("forum_posts", array("discussion" => $discussion->id))) {
foreach ($posts as $post) {
$post->course = $discussion->course;
$post->forum = $discussion->forum;
if (!forum_delete_post($post, 'ignore', $course, $cm, $forum, $fulldelete)) {
$result = false;
}
}
}
forum_tp_delete_read_records(-1, -1, $discussion->id);
// Discussion subscriptions must be removed before discussions because of key constraints.
$DB->delete_records('forum_discussion_subs', array('discussion' => $discussion->id));
if (!$DB->delete_records("forum_discussions", array("id" => $discussion->id))) {
$result = false;
}
// Update completion state if we are tracking completion based on number of posts
// But don't bother when deleting whole thing
if (!$fulldelete) {
$completion = new completion_info($course);
if ($completion->is_enabled($cm) == COMPLETION_TRACKING_AUTOMATIC &&
($forum->completiondiscussions || $forum->completionreplies || $forum->completionposts)) {
$completion->update_state($cm, COMPLETION_INCOMPLETE, $discussion->userid);
}
}
return $result;
}
/**
* Deletes a single forum post.
*
* @global object
* @param object $post Forum post object
* @param mixed $children Whether to delete children. If false, returns false
* if there are any children (without deleting the post). If true,
* recursively deletes all children. If set to special value 'ignore', deletes
* post regardless of children (this is for use only when deleting all posts
* in a disussion).
* @param object $course Course
* @param object $cm Course-module
* @param object $forum Forum
* @param bool $skipcompletion True to skip updating completion state if it
* would otherwise be updated, i.e. when deleting entire forum anyway.
* @return bool
*/
function forum_delete_post($post, $children, $course, $cm, $forum, $skipcompletion=false) {
global $DB, $CFG, $USER;
require_once($CFG->libdir.'/completionlib.php');
$context = context_module::instance($cm->id);
if ($children !== 'ignore' && ($childposts = $DB->get_records('forum_posts', array('parent'=>$post->id)))) {
if ($children) {
foreach ($childposts as $childpost) {
forum_delete_post($childpost, true, $course, $cm, $forum, $skipcompletion);
}
} else {
return false;
}
}
// Delete ratings.
require_once($CFG->dirroot.'/rating/lib.php');
$delopt = new stdClass;
$delopt->contextid = $context->id;
$delopt->component = 'mod_forum';
$delopt->ratingarea = 'post';
$delopt->itemid = $post->id;
$rm = new rating_manager();
$rm->delete_ratings($delopt);
// Delete attachments.
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_forum', 'attachment', $post->id);
$fs->delete_area_files($context->id, 'mod_forum', 'post', $post->id);
// Delete cached RSS feeds.
if (!empty($CFG->enablerssfeeds)) {
require_once($CFG->dirroot.'/mod/forum/rsslib.php');
forum_rss_delete_file($forum);
}
if ($DB->delete_records("forum_posts", array("id" => $post->id))) {
forum_tp_delete_read_records(-1, $post->id);
// Just in case we are deleting the last post
forum_discussion_update_last_post($post->discussion);
// Update completion state if we are tracking completion based on number of posts
// But don't bother when deleting whole thing
if (!$skipcompletion) {
$completion = new completion_info($course);
if ($completion->is_enabled($cm) == COMPLETION_TRACKING_AUTOMATIC &&
($forum->completiondiscussions || $forum->completionreplies || $forum->completionposts)) {
$completion->update_state($cm, COMPLETION_INCOMPLETE, $post->userid);
}
}
$params = array(
'context' => $context,
'objectid' => $post->id,
'other' => array(
'discussionid' => $post->discussion,
'forumid' => $forum->id,
'forumtype' => $forum->type,
)
);
$post->deleted = 1;
if ($post->userid !== $USER->id) {
$params['relateduserid'] = $post->userid;
}
$event = \mod_forum\event\post_deleted::create($params);
$event->add_record_snapshot('forum_posts', $post);
$event->trigger();
return true;
}
return false;
}
/**
* Sends post content to plagiarism plugin
* @param object $post Forum post object
* @param object $cm Course-module
* @param string $name
* @return bool
*/
function forum_trigger_content_uploaded_event($post, $cm, $name) {
$context = context_module::instance($cm->id);
$fs = get_file_storage();
$files = $fs->get_area_files($context->id, 'mod_forum', 'attachment', $post->id, "timemodified", false);
$params = array(
'context' => $context,
'objectid' => $post->id,
'other' => array(
'content' => $post->message,
'pathnamehashes' => array_keys($files),
'discussionid' => $post->discussion,
'triggeredfrom' => $name,
)
);
$event = \mod_forum\event\assessable_uploaded::create($params);
$event->trigger();
return true;
}
/**
* @global object
* @param object $post
* @param bool $children
* @return int
*/
function forum_count_replies($post, $children=true) {
global $DB;
$count = 0;
if ($children) {
if ($childposts = $DB->get_records('forum_posts', array('parent' => $post->id))) {
foreach ($childposts as $childpost) {
$count ++; // For this child
$count += forum_count_replies($childpost, true);
}
}
} else {
$count += $DB->count_records('forum_posts', array('parent' => $post->id));
}
return $count;
}
/**
* Given a new post, subscribes or unsubscribes as appropriate.
* Returns some text which describes what happened.
*
* @param object $fromform The submitted form
* @param stdClass $forum The forum record
* @param stdClass $discussion The forum discussion record
* @return string
*/
function forum_post_subscription($fromform, $forum, $discussion) {
global $USER;
if (\mod_forum\subscriptions::is_forcesubscribed($forum)) {
return "";
} else if (\mod_forum\subscriptions::subscription_disabled($forum)) {
$subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum);
if ($subscribed && !has_capability('moodle/course:manageactivities', context_course::instance($forum->course), $USER->id)) {
// This user should not be subscribed to the forum.
\mod_forum\subscriptions::unsubscribe_user($USER->id, $forum);
}
return "";
}
$info = new stdClass();
$info->name = fullname($USER);
$info->discussion = format_string($discussion->name);
$info->forum = format_string($forum->name);
if (isset($fromform->discussionsubscribe) && $fromform->discussionsubscribe) {
if ($result = \mod_forum\subscriptions::subscribe_user_to_discussion($USER->id, $discussion)) {
return html_writer::tag('p', get_string('discussionnowsubscribed', 'forum', $info));
}
} else {
if ($result = \mod_forum\subscriptions::unsubscribe_user_from_discussion($USER->id, $discussion)) {
return html_writer::tag('p', get_string('discussionnownotsubscribed', 'forum', $info));
}
}
return '';
}
/**
* Generate and return the subscribe or unsubscribe link for a forum.
*
* @param object $forum the forum. Fields used are $forum->id and $forum->forcesubscribe.
* @param object $context the context object for this forum.
* @param array $messages text used for the link in its various states
* (subscribed, unsubscribed, forcesubscribed or cantsubscribe).
* Any strings not passed in are taken from the $defaultmessages array
* at the top of the function.
* @param bool $cantaccessagroup
* @param bool $unused1
* @param bool $backtoindex
* @param array $unused2
* @return string
*/
function forum_get_subscribe_link($forum, $context, $messages = array(), $cantaccessagroup = false, $unused1 = true,
$backtoindex = false, $unused2 = null) {
global $CFG, $USER, $PAGE, $OUTPUT;
$defaultmessages = array(
'subscribed' => get_string('unsubscribe', 'forum'),
'unsubscribed' => get_string('subscribe', 'forum'),
'cantaccessgroup' => get_string('no'),
'forcesubscribed' => get_string('everyoneissubscribed', 'forum'),
'cantsubscribe' => get_string('disallowsubscribe','forum')
);
$messages = $messages + $defaultmessages;
if (\mod_forum\subscriptions::is_forcesubscribed($forum)) {
return $messages['forcesubscribed'];
} else if (\mod_forum\subscriptions::subscription_disabled($forum) &&
!has_capability('mod/forum:managesubscriptions', $context)) {
return $messages['cantsubscribe'];
} else if ($cantaccessagroup) {
return $messages['cantaccessgroup'];
} else {
if (!is_enrolled($context, $USER, '', true)) {
return '';
}
$subscribed = \mod_forum\subscriptions::is_subscribed($USER->id, $forum);
if ($subscribed) {
$linktext = $messages['subscribed'];
$linktitle = get_string('subscribestop', 'forum');
} else {
$linktext = $messages['unsubscribed'];
$linktitle = get_string('subscribestart', 'forum');
}
$options = array();
if ($backtoindex) {
$backtoindexlink = '&backtoindex=1';
$options['backtoindex'] = 1;
} else {
$backtoindexlink = '';
}
$options['id'] = $forum->id;
$options['sesskey'] = sesskey();
$url = new moodle_url('/mod/forum/subscribe.php', $options);
return $OUTPUT->single_button($url, $linktext, 'get', array('title' => $linktitle));
}
}
/**
* Returns true if user created new discussion already.
*
* @param int $forumid The forum to check for postings
* @param int $userid The user to check for postings
* @param int $groupid The group to restrict the check to
* @return bool
*/
function forum_user_has_posted_discussion($forumid, $userid, $groupid = null) {
global $CFG, $DB;
$sql = "SELECT 'x'
FROM {forum_discussions} d, {forum_posts} p
WHERE d.forum = ? AND p.discussion = d.id AND p.parent = 0 AND p.userid = ?";
$params = [$forumid, $userid];
if ($groupid) {
$sql .= " AND d.groupid = ?";
$params[] = $groupid;
}
return $DB->record_exists_sql($sql, $params);
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
* @return array
*/
function forum_discussions_user_has_posted_in($forumid, $userid) {
global $CFG, $DB;
$haspostedsql = "SELECT d.id AS id,
d.*
FROM {forum_posts} p,
{forum_discussions} d
WHERE p.discussion = d.id
AND d.forum = ?
AND p.userid = ?";
return $DB->get_records_sql($haspostedsql, array($forumid, $userid));
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $did
* @param int $userid
* @return bool
*/
function forum_user_has_posted($forumid, $did, $userid) {
global $DB;
if (empty($did)) {
// posted in any forum discussion?
$sql = "SELECT 'x'
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
WHERE p.userid = :userid AND d.forum = :forumid";
return $DB->record_exists_sql($sql, array('forumid'=>$forumid,'userid'=>$userid));
} else {
return $DB->record_exists('forum_posts', array('discussion'=>$did,'userid'=>$userid));
}
}
/**
* Returns creation time of the first user's post in given discussion
* @global object $DB
* @param int $did Discussion id
* @param int $userid User id
* @return int|bool post creation time stamp or return false
*/
function forum_get_user_posted_time($did, $userid) {
global $DB;
$posttime = $DB->get_field('forum_posts', 'MIN(created)', array('userid'=>$userid, 'discussion'=>$did));
if (empty($posttime)) {
return false;
}
return $posttime;
}
/**
* @global object
* @param object $forum
* @param object $currentgroup
* @param int $unused
* @param object $cm
* @param object $context
* @return bool
*/
function forum_user_can_post_discussion($forum, $currentgroup=null, $unused=-1, $cm=NULL, $context=NULL) {
// $forum is an object
global $USER;
// shortcut - guest and not-logged-in users can not post
if (isguestuser() or !isloggedin()) {
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
print_error('invalidcoursemodule');
}
}
if (!$context) {
$context = context_module::instance($cm->id);
}
if ($currentgroup === null) {
$currentgroup = groups_get_activity_group($cm);
}
$groupmode = groups_get_activity_groupmode($cm);
if ($forum->type == 'news') {
$capname = 'mod/forum:addnews';
} else if ($forum->type == 'qanda') {
$capname = 'mod/forum:addquestion';
} else {
$capname = 'mod/forum:startdiscussion';
}
if (!has_capability($capname, $context)) {
return false;
}
if ($forum->type == 'single') {
return false;
}
if ($forum->type == 'eachuser') {
if (forum_user_has_posted_discussion($forum->id, $USER->id, $currentgroup)) {
return false;
}
}
if (!$groupmode or has_capability('moodle/site:accessallgroups', $context)) {
return true;
}
if ($currentgroup) {
return groups_is_member($currentgroup);
} else {
// no group membership and no accessallgroups means no new discussions
// reverted to 1.7 behaviour in 1.9+, buggy in 1.8.0-1.9.0
return false;
}
}
/**
* This function checks whether the user can reply to posts in a forum
* discussion. Use forum_user_can_post_discussion() to check whether the user
* can start discussions.
*
* @global object
* @global object
* @uses DEBUG_DEVELOPER
* @uses CONTEXT_MODULE
* @uses VISIBLEGROUPS
* @param object $forum forum object
* @param object $discussion
* @param object $user
* @param object $cm
* @param object $course
* @param object $context
* @return bool
*/
function forum_user_can_post($forum, $discussion, $user=NULL, $cm=NULL, $course=NULL, $context=NULL) {
global $USER, $DB;
if (empty($user)) {
$user = $USER;
}
// shortcut - guest and not-logged-in users can not post
if (isguestuser($user) or empty($user->id)) {
return false;
}
if (!isset($discussion->groupid)) {
debugging('incorrect discussion parameter', DEBUG_DEVELOPER);
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
print_error('invalidcoursemodule');
}
}
if (!$course) {
debugging('missing course', DEBUG_DEVELOPER);
if (!$course = $DB->get_record('course', array('id' => $forum->course))) {
print_error('invalidcourseid');
}
}
if (!$context) {
$context = context_module::instance($cm->id);
}
// Check whether the discussion is locked.
if (forum_discussion_is_locked($forum, $discussion)) {
if (!has_capability('mod/forum:canoverridediscussionlock', $context)) {
return false;
}
}
// normal users with temporary guest access can not post, suspended users can not post either
if (!is_viewing($context, $user->id) and !is_enrolled($context, $user->id, '', true)) {
return false;
}
if ($forum->type == 'news') {
$capname = 'mod/forum:replynews';
} else {
$capname = 'mod/forum:replypost';
}
if (!has_capability($capname, $context, $user->id)) {
return false;
}
if (!$groupmode = groups_get_activity_groupmode($cm, $course)) {
return true;
}
if (has_capability('moodle/site:accessallgroups', $context)) {
return true;
}
if ($groupmode == VISIBLEGROUPS) {
if ($discussion->groupid == -1) {
// allow students to reply to all participants discussions - this was not possible in Moodle <1.8
return true;
}
return groups_is_member($discussion->groupid);
} else {
//separate groups
if ($discussion->groupid == -1) {
return false;
}
return groups_is_member($discussion->groupid);
}
}
/**
* Check to ensure a user can view a timed discussion.
*
* @param object $discussion
* @param object $user
* @param object $context
* @return boolean returns true if they can view post, false otherwise
*/
function forum_user_can_see_timed_discussion($discussion, $user, $context) {
global $CFG;
// Check that the user can view a discussion that is normally hidden due to access times.
if (!empty($CFG->forum_enabletimedposts)) {
$time = time();
if (($discussion->timestart != 0 && $discussion->timestart > $time)
|| ($discussion->timeend != 0 && $discussion->timeend < $time)) {
if (!has_capability('mod/forum:viewhiddentimedposts', $context, $user->id)) {
return false;
}
}
}
return true;
}
/**
* Check to ensure a user can view a group discussion.
*
* @param object $discussion
* @param object $cm
* @param object $context
* @return boolean returns true if they can view post, false otherwise
*/
function forum_user_can_see_group_discussion($discussion, $cm, $context) {
// If it's a grouped discussion, make sure the user is a member.
if ($discussion->groupid > 0) {
$groupmode = groups_get_activity_groupmode($cm);
if ($groupmode == SEPARATEGROUPS) {
return groups_is_member($discussion->groupid) || has_capability('moodle/site:accessallgroups', $context);
}
}
return true;
}
/**
* @global object
* @global object
* @uses DEBUG_DEVELOPER
* @param object $forum
* @param object $discussion
* @param object $context
* @param object $user
* @return bool
*/
function forum_user_can_see_discussion($forum, $discussion, $context, $user=NULL) {
global $USER, $DB;
if (empty($user) || empty($user->id)) {
$user = $USER;
}
// retrieve objects (yuk)
if (is_numeric($forum)) {
debugging('missing full forum', DEBUG_DEVELOPER);
if (!$forum = $DB->get_record('forum',array('id'=>$forum))) {
return false;
}
}
if (is_numeric($discussion)) {
debugging('missing full discussion', DEBUG_DEVELOPER);
if (!$discussion = $DB->get_record('forum_discussions',array('id'=>$discussion))) {
return false;
}
}
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
print_error('invalidcoursemodule');
}
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return false;
}
if (!forum_user_can_see_timed_discussion($discussion, $user, $context)) {
return false;
}
if (!forum_user_can_see_group_discussion($discussion, $cm, $context)) {
return false;
}
return true;
}
/**
* Check whether a user can see the specified post.
*
* @param \stdClass $forum The forum to chcek
* @param \stdClass $discussion The discussion the post is in
* @param \stdClass $post The post in question
* @param \stdClass $user The user to test - if not specified, the current user is checked.
* @param \stdClass $cm The Course Module that the forum is in (required).
* @param bool $checkdeleted Whether to check the deleted flag on the post.
* @return bool
*/
function forum_user_can_see_post($forum, $discussion, $post, $user = null, $cm = null, $checkdeleted = true) {
global $CFG, $USER, $DB;
// retrieve objects (yuk)
if (is_numeric($forum)) {
debugging('missing full forum', DEBUG_DEVELOPER);
if (!$forum = $DB->get_record('forum',array('id'=>$forum))) {
return false;
}
}
if (is_numeric($discussion)) {
debugging('missing full discussion', DEBUG_DEVELOPER);
if (!$discussion = $DB->get_record('forum_discussions',array('id'=>$discussion))) {
return false;
}
}
if (is_numeric($post)) {
debugging('missing full post', DEBUG_DEVELOPER);
if (!$post = $DB->get_record('forum_posts',array('id'=>$post))) {
return false;
}
}
if (!isset($post->id) && isset($post->parent)) {
$post->id = $post->parent;
}
if ($checkdeleted && !empty($post->deleted)) {
return false;
}
if (!$cm) {
debugging('missing cm', DEBUG_DEVELOPER);
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
print_error('invalidcoursemodule');
}
}
// Context used throughout function.
$modcontext = context_module::instance($cm->id);
if (empty($user) || empty($user->id)) {
$user = $USER;
}
$canviewdiscussion = (isset($cm->cache) && !empty($cm->cache->caps['mod/forum:viewdiscussion']))
|| has_capability('mod/forum:viewdiscussion', $modcontext, $user->id);
if (!$canviewdiscussion && !has_all_capabilities(array('moodle/user:viewdetails', 'moodle/user:readuserposts'), context_user::instance($post->userid))) {
return false;
}
if (isset($cm->uservisible)) {
if (!$cm->uservisible) {
return false;
}
} else {
if (!\core_availability\info_module::is_user_visible($cm, $user->id, false)) {
return false;
}
}
if (!forum_user_can_see_timed_discussion($discussion, $user, $modcontext)) {
return false;
}
if (!forum_user_can_see_group_discussion($discussion, $cm, $modcontext)) {
return false;
}
if ($forum->type == 'qanda') {
if (has_capability('mod/forum:viewqandawithoutposting', $modcontext, $user->id) || $post->userid == $user->id
|| (isset($discussion->firstpost) && $discussion->firstpost == $post->id)) {
return true;
}
$firstpost = forum_get_firstpost_from_discussion($discussion->id);
if ($firstpost->userid == $user->id) {
return true;
}
$userfirstpost = forum_get_user_posted_time($discussion->id, $user->id);
return (($userfirstpost !== false && (time() - $userfirstpost >= $CFG->maxeditingtime)));
}
return true;
}
/**
* Prints the discussion view screen for a forum.
*
* @global object
* @global object
* @param object $course The current course object.
* @param object $forum Forum to be printed.
* @param int $maxdiscussions .
* @param string $displayformat The display format to use (optional).
* @param string $sort Sort arguments for database query (optional).
* @param int $groupmode Group mode of the forum (optional).
* @param void $unused (originally current group)
* @param int $page Page mode, page to display (optional).
* @param int $perpage The maximum number of discussions per page(optional)
* @param boolean $subscriptionstatus Whether the user is currently subscribed to the discussion in some fashion.
*
*/
function forum_print_latest_discussions($course, $forum, $maxdiscussions = -1, $displayformat = 'plain', $sort = '',
$currentgroup = -1, $groupmode = -1, $page = -1, $perpage = 100, $cm = null) {
global $CFG, $USER, $OUTPUT;
require_once($CFG->dirroot . '/course/lib.php');
if (!$cm) {
if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
print_error('invalidcoursemodule');
}
}
$context = context_module::instance($cm->id);
if (empty($sort)) {
$sort = forum_get_default_sort_order();
}
$olddiscussionlink = false;
// Sort out some defaults
if ($perpage <= 0) {
$perpage = 0;
$page = -1;
}
if ($maxdiscussions == 0) {
// all discussions - backwards compatibility
$page = -1;
$perpage = 0;
if ($displayformat == 'plain') {
$displayformat = 'header'; // Abbreviate display by default
}
} else if ($maxdiscussions > 0) {
$page = -1;
$perpage = $maxdiscussions;
}
$fullpost = false;
if ($displayformat == 'plain') {
$fullpost = true;
}
// Decide if current user is allowed to see ALL the current discussions or not
// First check the group stuff
if ($currentgroup == -1 or $groupmode == -1) {
$groupmode = groups_get_activity_groupmode($cm, $course);
$currentgroup = groups_get_activity_group($cm);
}
$groups = array(); //cache
// If the user can post discussions, then this is a good place to put the
// button for it. We do not show the button if we are showing site news
// and the current user is a guest.
$canstart = forum_user_can_post_discussion($forum, $currentgroup, $groupmode, $cm, $context);
if (!$canstart and $forum->type !== 'news') {
if (isguestuser() or !isloggedin()) {
$canstart = true;
}
if (!is_enrolled($context) and !is_viewing($context)) {
// allow guests and not-logged-in to see the button - they are prompted to log in after clicking the link
// normal users with temporary guest access see this button too, they are asked to enrol instead
// do not show the button to users with suspended enrolments here
$canstart = enrol_selfenrol_available($course->id);
}
}
if ($canstart) {
switch ($forum->type) {
case 'news':
case 'blog':
$buttonadd = get_string('addanewtopic', 'forum');
break;
case 'qanda':
$buttonadd = get_string('addanewquestion', 'forum');
break;
default:
$buttonadd = get_string('addanewdiscussion', 'forum');
break;
}
$button = new single_button(new moodle_url('/mod/forum/post.php', ['forum' => $forum->id]), $buttonadd, 'get');
$button->class = 'singlebutton forumaddnew';
$button->formid = 'newdiscussionform';
echo $OUTPUT->render($button);
} else if (isguestuser() or !isloggedin() or $forum->type == 'news' or
$forum->type == 'qanda' and !has_capability('mod/forum:addquestion', $context) or
$forum->type != 'qanda' and !has_capability('mod/forum:startdiscussion', $context)) {
// no button and no info
} else if ($groupmode and !has_capability('moodle/site:accessallgroups', $context)) {
// inform users why they can not post new discussion
if (!$currentgroup) {
echo $OUTPUT->notification(get_string('cannotadddiscussionall', 'forum'));
} else if (!groups_is_member($currentgroup)) {
echo $OUTPUT->notification(get_string('cannotadddiscussion', 'forum'));
}
}
// Get all the recent discussions we're allowed to see
$getuserlastmodified = ($displayformat == 'header');
if (! $discussions = forum_get_discussions($cm, $sort, $fullpost, null, $maxdiscussions, $getuserlastmodified, $page, $perpage) ) {
echo '';
if ($forum->type == 'news') {
echo '('.get_string('nonews', 'forum').')';
} else if ($forum->type == 'qanda') {
echo '('.get_string('noquestions','forum').')';
} else {
echo '('.get_string('nodiscussions', 'forum').')';
}
echo "
\n";
return;
}
// If we want paging
if ($page != -1) {
///Get the number of discussions found
$numdiscussions = forum_get_discussions_count($cm);
///Show the paging bar
echo $OUTPUT->paging_bar($numdiscussions, $page, $perpage, "view.php?f=$forum->id");
if ($numdiscussions > 1000) {
// saves some memory on sites with very large forums
$replies = forum_count_discussion_replies($forum->id, $sort, $maxdiscussions, $page, $perpage);
} else {
$replies = forum_count_discussion_replies($forum->id);
}
} else {
$replies = forum_count_discussion_replies($forum->id);
if ($maxdiscussions > 0 and $maxdiscussions <= count($discussions)) {
$olddiscussionlink = true;
}
}
$canviewparticipants = course_can_view_participants($context);
$canviewhiddentimedposts = has_capability('mod/forum:viewhiddentimedposts', $context);
$strdatestring = get_string('strftimerecentfull');
// Check if the forum is tracked.
if ($cantrack = forum_tp_can_track_forums($forum)) {
$forumtracked = forum_tp_is_tracked($forum);
} else {
$forumtracked = false;
}
if ($forumtracked) {
$unreads = forum_get_discussions_unread($cm);
} else {
$unreads = array();
}
if ($displayformat == 'header') {
echo '';
}
if ($olddiscussionlink) {
if ($forum->type == 'news') {
$strolder = get_string('oldertopics', 'forum');
} else {
$strolder = get_string('olderdiscussions', 'forum');
}
echo '';
}
if ($page != -1) { ///Show the paging bar
echo $OUTPUT->paging_bar($numdiscussions, $page, $perpage, "view.php?f=$forum->id");
}
}
/**
* Prints a forum discussion
*
* @uses CONTEXT_MODULE
* @uses FORUM_MODE_FLATNEWEST
* @uses FORUM_MODE_FLATOLDEST
* @uses FORUM_MODE_THREADED
* @uses FORUM_MODE_NESTED
* @param stdClass $course
* @param stdClass $cm
* @param stdClass $forum
* @param stdClass $discussion
* @param stdClass $post
* @param int $mode
* @param mixed $canreply
* @param bool $canrate
*/
function forum_print_discussion($course, $cm, $forum, $discussion, $post, $mode, $canreply=NULL, $canrate=false) {
global $USER, $CFG;
require_once($CFG->dirroot.'/rating/lib.php');
$ownpost = (isloggedin() && $USER->id == $post->userid);
$modcontext = context_module::instance($cm->id);
if ($canreply === NULL) {
$reply = forum_user_can_post($forum, $discussion, $USER, $cm, $course, $modcontext);
} else {
$reply = $canreply;
}
// $cm holds general cache for forum functions
$cm->cache = new stdClass;
$cm->cache->groups = groups_get_all_groups($course->id, 0, $cm->groupingid);
$cm->cache->usersgroups = array();
$posters = array();
// preload all posts - TODO: improve...
if ($mode == FORUM_MODE_FLATNEWEST) {
$sort = "p.created DESC";
} else {
$sort = "p.created ASC";
}
$forumtracked = forum_tp_is_tracked($forum);
$posts = forum_get_all_discussion_posts($discussion->id, $sort, $forumtracked);
$post = $posts[$post->id];
foreach ($posts as $pid=>$p) {
$posters[$p->userid] = $p->userid;
}
// preload all groups of ppl that posted in this discussion
if ($postersgroups = groups_get_all_groups($course->id, $posters, $cm->groupingid, 'gm.id, gm.groupid, gm.userid')) {
foreach($postersgroups as $pg) {
if (!isset($cm->cache->usersgroups[$pg->userid])) {
$cm->cache->usersgroups[$pg->userid] = array();
}
$cm->cache->usersgroups[$pg->userid][$pg->groupid] = $pg->groupid;
}
unset($postersgroups);
}
//load ratings
if ($forum->assessed != RATING_AGGREGATE_NONE) {
$ratingoptions = new stdClass;
$ratingoptions->context = $modcontext;
$ratingoptions->component = 'mod_forum';
$ratingoptions->ratingarea = 'post';
$ratingoptions->items = $posts;
$ratingoptions->aggregate = $forum->assessed;//the aggregation method
$ratingoptions->scaleid = $forum->scale;
$ratingoptions->userid = $USER->id;
if ($forum->type == 'single' or !$discussion->id) {
$ratingoptions->returnurl = "$CFG->wwwroot/mod/forum/view.php?id=$cm->id";
} else {
$ratingoptions->returnurl = "$CFG->wwwroot/mod/forum/discuss.php?d=$discussion->id";
}
$ratingoptions->assesstimestart = $forum->assesstimestart;
$ratingoptions->assesstimefinish = $forum->assesstimefinish;
$rm = new rating_manager();
$posts = $rm->get_ratings($ratingoptions);
}
$post->forum = $forum->id; // Add the forum id to the post object, later used by forum_print_post
$post->forumtype = $forum->type;
$post->subject = format_string($post->subject);
$postread = !empty($post->postread);
forum_print_post($post, $discussion, $forum, $cm, $course, $ownpost, $reply, false,
'', '', $postread, true, $forumtracked);
switch ($mode) {
case FORUM_MODE_FLATOLDEST :
case FORUM_MODE_FLATNEWEST :
default:
forum_print_posts_flat($course, $cm, $forum, $discussion, $post, $mode, $reply, $forumtracked, $posts);
break;
case FORUM_MODE_THREADED :
forum_print_posts_threaded($course, $cm, $forum, $discussion, $post, 0, $reply, $forumtracked, $posts);
break;
case FORUM_MODE_NESTED :
forum_print_posts_nested($course, $cm, $forum, $discussion, $post, $reply, $forumtracked, $posts);
break;
}
}
/**
* @global object
* @global object
* @uses FORUM_MODE_FLATNEWEST
* @param object $course
* @param object $cm
* @param object $forum
* @param object $discussion
* @param object $post
* @param object $mode
* @param bool $reply
* @param bool $forumtracked
* @param array $posts
* @return void
*/
function forum_print_posts_flat($course, &$cm, $forum, $discussion, $post, $mode, $reply, $forumtracked, $posts) {
global $USER, $CFG;
$link = false;
foreach ($posts as $post) {
if (!$post->parent) {
continue;
}
$post->subject = format_string($post->subject);
$ownpost = ($USER->id == $post->userid);
$postread = !empty($post->postread);
forum_print_post($post, $discussion, $forum, $cm, $course, $ownpost, $reply, $link,
'', '', $postread, true, $forumtracked);
}
}
/**
* @todo Document this function
*
* @global object
* @global object
* @uses CONTEXT_MODULE
* @return void
*/
function forum_print_posts_threaded($course, &$cm, $forum, $discussion, $parent, $depth, $reply, $forumtracked, $posts) {
global $USER, $CFG;
$link = false;
if (!empty($posts[$parent->id]->children)) {
$posts = $posts[$parent->id]->children;
$modcontext = context_module::instance($cm->id);
$canviewfullnames = has_capability('moodle/site:viewfullnames', $modcontext);
foreach ($posts as $post) {
echo '';
if ($depth > 0) {
$ownpost = ($USER->id == $post->userid);
$post->subject = format_string($post->subject);
$postread = !empty($post->postread);
forum_print_post($post, $discussion, $forum, $cm, $course, $ownpost, $reply, $link,
'', '', $postread, true, $forumtracked);
} else {
if (!forum_user_can_see_post($forum, $discussion, $post, null, $cm, true)) {
if (forum_user_can_see_post($forum, $discussion, $post, null, $cm, false)) {
// This post has been deleted but still exists and may have children.
$subject = get_string('privacy:request:delete:post:subject', 'mod_forum');
$byline = '';
} else {
// The user can't see this post at all.
echo "
\n";
continue;
}
} else {
$by = new stdClass();
$by->name = fullname($post, $canviewfullnames);
$by->date = userdate($post->modified);
$byline = ' ' . get_string("bynameondate", "forum", $by);
$subject = format_string($post->subject, true);
}
if ($forumtracked) {
if (!empty($post->postread)) {
$style = '';
} else {
$style = '';
}
} else {
$style = '';
}
echo $style;
echo "";
echo html_writer::link(new moodle_url('/mod/forum/discuss.php', [
'd' => $post->discussion,
'parent' => $post->id,
]), $subject);
echo $byline;
echo "";
}
forum_print_posts_threaded($course, $cm, $forum, $discussion, $post, $depth-1, $reply, $forumtracked, $posts);
echo "\n";
}
}
}
/**
* @todo Document this function
* @global object
* @global object
* @return void
*/
function forum_print_posts_nested($course, &$cm, $forum, $discussion, $parent, $reply, $forumtracked, $posts) {
global $USER, $CFG;
$link = false;
if (!empty($posts[$parent->id]->children)) {
$posts = $posts[$parent->id]->children;
foreach ($posts as $post) {
echo '';
if (!isloggedin()) {
$ownpost = false;
} else {
$ownpost = ($USER->id == $post->userid);
}
$post->subject = format_string($post->subject);
$postread = !empty($post->postread);
forum_print_post($post, $discussion, $forum, $cm, $course, $ownpost, $reply, $link,
'', '', $postread, true, $forumtracked);
forum_print_posts_nested($course, $cm, $forum, $discussion, $post, $reply, $forumtracked, $posts);
echo "
\n";
}
}
}
/**
* Returns all forum posts since a given time in specified forum.
*
* @todo Document this functions args
* @global object
* @global object
* @global object
* @global object
*/
function forum_get_recent_mod_activity(&$activities, &$index, $timestart, $courseid, $cmid, $userid=0, $groupid=0) {
global $CFG, $COURSE, $USER, $DB;
if ($COURSE->id == $courseid) {
$course = $COURSE;
} else {
$course = $DB->get_record('course', array('id' => $courseid));
}
$modinfo = get_fast_modinfo($course);
$cm = $modinfo->cms[$cmid];
$params = array($timestart, $cm->instance);
if ($userid) {
$userselect = "AND u.id = ?";
$params[] = $userid;
} else {
$userselect = "";
}
if ($groupid) {
$groupselect = "AND d.groupid = ?";
$params[] = $groupid;
} else {
$groupselect = "";
}
$allnames = get_all_user_name_fields(true, 'u');
if (!$posts = $DB->get_records_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid,
d.timestart, d.timeend, d.userid AS duserid,
$allnames, u.email, u.picture, u.imagealt, u.email
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {user} u ON u.id = p.userid
WHERE p.created > ? AND f.id = ?
$userselect $groupselect
ORDER BY p.id ASC", $params)) { // order by initial posting date
return;
}
$groupmode = groups_get_activity_groupmode($cm, $course);
$cm_context = context_module::instance($cm->id);
$viewhiddentimed = has_capability('mod/forum:viewhiddentimedposts', $cm_context);
$accessallgroups = has_capability('moodle/site:accessallgroups', $cm_context);
$printposts = array();
foreach ($posts as $post) {
if (!empty($CFG->forum_enabletimedposts) and $USER->id != $post->duserid
and (($post->timestart > 0 and $post->timestart > time()) or ($post->timeend > 0 and $post->timeend < time()))) {
if (!$viewhiddentimed) {
continue;
}
}
if ($groupmode) {
if ($post->groupid == -1 or $groupmode == VISIBLEGROUPS or $accessallgroups) {
// oki (Open discussions have groupid -1)
} else {
// separate mode
if (isguestuser()) {
// shortcut
continue;
}
if (!in_array($post->groupid, $modinfo->get_groups($cm->groupingid))) {
continue;
}
}
}
$printposts[] = $post;
}
if (!$printposts) {
return;
}
$aname = format_string($cm->name,true);
foreach ($printposts as $post) {
$tmpactivity = new stdClass();
$tmpactivity->type = 'forum';
$tmpactivity->cmid = $cm->id;
$tmpactivity->name = $aname;
$tmpactivity->sectionnum = $cm->sectionnum;
$tmpactivity->timestamp = $post->modified;
$tmpactivity->content = new stdClass();
$tmpactivity->content->id = $post->id;
$tmpactivity->content->discussion = $post->discussion;
$tmpactivity->content->subject = format_string($post->subject);
$tmpactivity->content->parent = $post->parent;
$tmpactivity->content->forumtype = $post->forumtype;
$tmpactivity->user = new stdClass();
$additionalfields = array('id' => 'userid', 'picture', 'imagealt', 'email');
$additionalfields = explode(',', user_picture::fields());
$tmpactivity->user = username_load_fields_from_object($tmpactivity->user, $post, null, $additionalfields);
$tmpactivity->user->id = $post->userid;
$activities[$index++] = $tmpactivity;
}
return;
}
/**
* Outputs the forum post indicated by $activity.
*
* @param object $activity the activity object the forum resides in
* @param int $courseid the id of the course the forum resides in
* @param bool $detail not used, but required for compatibilty with other modules
* @param int $modnames not used, but required for compatibilty with other modules
* @param bool $viewfullnames not used, but required for compatibilty with other modules
*/
function forum_print_recent_mod_activity($activity, $courseid, $detail, $modnames, $viewfullnames) {
global $OUTPUT;
$content = $activity->content;
if ($content->parent) {
$class = 'reply';
} else {
$class = 'discussion';
}
$tableoptions = [
'border' => '0',
'cellpadding' => '3',
'cellspacing' => '0',
'class' => 'forum-recent'
];
$output = html_writer::start_tag('table', $tableoptions);
$output .= html_writer::start_tag('tr');
$post = (object) ['parent' => $content->parent];
$forum = (object) ['type' => $content->forumtype];
$authorhidden = forum_is_author_hidden($post, $forum);
// Show user picture if author should not be hidden.
if (!$authorhidden) {
$pictureoptions = [
'courseid' => $courseid,
'link' => $authorhidden,
'alttext' => $authorhidden,
];
$picture = $OUTPUT->user_picture($activity->user, $pictureoptions);
$output .= html_writer::tag('td', $picture, ['class' => 'userpicture', 'valign' => 'top']);
}
// Discussion title and author.
$output .= html_writer::start_tag('td', ['class' => $class]);
if ($content->parent) {
$class = 'title';
} else {
// Bold the title of new discussions so they stand out.
$class = 'title bold';
}
$output .= html_writer::start_div($class);
if ($detail) {
$aname = s($activity->name);
$output .= $OUTPUT->image_icon('icon', $aname, $activity->type);
}
$discussionurl = new moodle_url('/mod/forum/discuss.php', ['d' => $content->discussion]);
$discussionurl->set_anchor('p' . $activity->content->id);
$output .= html_writer::link($discussionurl, $content->subject);
$output .= html_writer::end_div();
$timestamp = userdate($activity->timestamp);
if ($authorhidden) {
$authornamedate = $timestamp;
} else {
$fullname = fullname($activity->user, $viewfullnames);
$userurl = new moodle_url('/user/view.php');
$userurl->params(['id' => $activity->user->id, 'course' => $courseid]);
$by = new stdClass();
$by->name = html_writer::link($userurl, $fullname);
$by->date = $timestamp;
$authornamedate = get_string('bynameondate', 'forum', $by);
}
$output .= html_writer::div($authornamedate, 'user');
$output .= html_writer::end_tag('td');
$output .= html_writer::end_tag('tr');
$output .= html_writer::end_tag('table');
echo $output;
}
/**
* recursively sets the discussion field to $discussionid on $postid and all its children
* used when pruning a post
*
* @global object
* @param int $postid
* @param int $discussionid
* @return bool
*/
function forum_change_discussionid($postid, $discussionid) {
global $DB;
$DB->set_field('forum_posts', 'discussion', $discussionid, array('id' => $postid));
if ($posts = $DB->get_records('forum_posts', array('parent' => $postid))) {
foreach ($posts as $post) {
forum_change_discussionid($post->id, $discussionid);
}
}
return true;
}
/**
* Prints the editing button on subscribers page
*
* @global object
* @global object
* @param int $courseid
* @param int $forumid
* @return string
*/
function forum_update_subscriptions_button($courseid, $forumid) {
global $CFG, $USER;
if (!empty($USER->subscriptionsediting)) {
$string = get_string('managesubscriptionsoff', 'forum');
$edit = "off";
} else {
$string = get_string('managesubscriptionson', 'forum');
$edit = "on";
}
$subscribers = html_writer::start_tag('form', array('action' => $CFG->wwwroot . '/mod/forum/subscribers.php',
'method' => 'get', 'class' => 'form-inline'));
$subscribers .= html_writer::empty_tag('input', array('type' => 'submit', 'value' => $string,
'class' => 'btn btn-secondary'));
$subscribers .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'id', 'value' => $forumid));
$subscribers .= html_writer::empty_tag('input', array('type' => 'hidden', 'name' => 'edit', 'value' => $edit));
$subscribers .= html_writer::end_tag('form');
return $subscribers;
}
// Functions to do with read tracking.
/**
* Mark posts as read.
*
* @global object
* @global object
* @param object $user object
* @param array $postids array of post ids
* @return boolean success
*/
function forum_tp_mark_posts_read($user, $postids) {
global $CFG, $DB;
if (!forum_tp_can_track_forums(false, $user)) {
return true;
}
$status = true;
$now = time();
$cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 3600);
if (empty($postids)) {
return true;
} else if (count($postids) > 200) {
while ($part = array_splice($postids, 0, 200)) {
$status = forum_tp_mark_posts_read($user, $part) && $status;
}
return $status;
}
list($usql, $postidparams) = $DB->get_in_or_equal($postids, SQL_PARAMS_NAMED, 'postid');
$insertparams = array(
'userid1' => $user->id,
'userid2' => $user->id,
'userid3' => $user->id,
'firstread' => $now,
'lastread' => $now,
'cutoffdate' => $cutoffdate,
);
$params = array_merge($postidparams, $insertparams);
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_FORCED."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND tf.id IS NULL))";
} else {
$trackingsql = "AND ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND tf.id IS NULL)";
}
// First insert any new entries.
$sql = "INSERT INTO {forum_read} (userid, postid, discussionid, forumid, firstread, lastread)
SELECT :userid1, p.id, p.discussion, d.forum, :firstread, :lastread
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
LEFT JOIN {forum_track_prefs} tf ON (tf.userid = :userid2 AND tf.forumid = f.id)
LEFT JOIN {forum_read} fr ON (
fr.userid = :userid3
AND fr.postid = p.id
AND fr.discussionid = d.id
AND fr.forumid = f.id
)
WHERE p.id $usql
AND p.modified >= :cutoffdate
$trackingsql
AND fr.id IS NULL";
$status = $DB->execute($sql, $params) && $status;
// Then update all records.
$updateparams = array(
'userid' => $user->id,
'lastread' => $now,
);
$params = array_merge($postidparams, $updateparams);
$status = $DB->set_field_select('forum_read', 'lastread', $now, '
userid = :userid
AND lastread <> :lastread
AND postid ' . $usql,
$params) && $status;
return $status;
}
/**
* Mark post as read.
* @global object
* @global object
* @param int $userid
* @param int $postid
*/
function forum_tp_add_read_record($userid, $postid) {
global $CFG, $DB;
$now = time();
$cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 3600);
if (!$DB->record_exists('forum_read', array('userid' => $userid, 'postid' => $postid))) {
$sql = "INSERT INTO {forum_read} (userid, postid, discussionid, forumid, firstread, lastread)
SELECT ?, p.id, p.discussion, d.forum, ?, ?
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
WHERE p.id = ? AND p.modified >= ?";
return $DB->execute($sql, array($userid, $now, $now, $postid, $cutoffdate));
} else {
$sql = "UPDATE {forum_read}
SET lastread = ?
WHERE userid = ? AND postid = ?";
return $DB->execute($sql, array($now, $userid, $userid));
}
}
/**
* If its an old post, do nothing. If the record exists, the maintenance will clear it up later.
*
* @param int $userid The ID of the user to mark posts read for.
* @param object $post The post record for the post to mark as read.
* @param mixed $unused
* @return bool
*/
function forum_tp_mark_post_read($userid, $post, $unused = null) {
if (!forum_tp_is_post_old($post)) {
return forum_tp_add_read_record($userid, $post->id);
} else {
return true;
}
}
/**
* Marks a whole forum as read, for a given user
*
* @global object
* @global object
* @param object $user
* @param int $forumid
* @param int|bool $groupid
* @return bool
*/
function forum_tp_mark_forum_read($user, $forumid, $groupid=false) {
global $CFG, $DB;
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
$groupsel = "";
$params = array($user->id, $forumid, $cutoffdate);
if ($groupid !== false) {
$groupsel = " AND (d.groupid = ? OR d.groupid = -1)";
$params[] = $groupid;
}
$sql = "SELECT p.id
FROM {forum_posts} p
LEFT JOIN {forum_discussions} d ON d.id = p.discussion
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
WHERE d.forum = ?
AND p.modified >= ? AND r.id is NULL
$groupsel";
if ($posts = $DB->get_records_sql($sql, $params)) {
$postids = array_keys($posts);
return forum_tp_mark_posts_read($user, $postids);
}
return true;
}
/**
* Marks a whole discussion as read, for a given user
*
* @global object
* @global object
* @param object $user
* @param int $discussionid
* @return bool
*/
function forum_tp_mark_discussion_read($user, $discussionid) {
global $CFG, $DB;
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
$sql = "SELECT p.id
FROM {forum_posts} p
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
WHERE p.discussion = ?
AND p.modified >= ? AND r.id is NULL";
if ($posts = $DB->get_records_sql($sql, array($user->id, $discussionid, $cutoffdate))) {
$postids = array_keys($posts);
return forum_tp_mark_posts_read($user, $postids);
}
return true;
}
/**
* @global object
* @param int $userid
* @param object $post
*/
function forum_tp_is_post_read($userid, $post) {
global $DB;
return (forum_tp_is_post_old($post) ||
$DB->record_exists('forum_read', array('userid' => $userid, 'postid' => $post->id)));
}
/**
* @global object
* @param object $post
* @param int $time Defautls to time()
*/
function forum_tp_is_post_old($post, $time=null) {
global $CFG;
if (is_null($time)) {
$time = time();
}
return ($post->modified < ($time - ($CFG->forum_oldpostdays * 24 * 3600)));
}
/**
* Returns the count of records for the provided user and course.
* Please note that group access is ignored!
*
* @global object
* @global object
* @param int $userid
* @param int $courseid
* @return array
*/
function forum_tp_get_course_unread_posts($userid, $courseid) {
global $CFG, $DB;
$now = floor(time() / 60) * 60; // DB cache friendliness.
$cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 60 * 60);
$params = array($userid, $userid, $courseid, $cutoffdate, $userid);
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)";
$params[] = $now;
$params[] = $now;
} else {
$timedsql = "";
}
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_FORCED."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND tf.id IS NULL
AND (SELECT trackforums FROM {user} WHERE id = ?) = 1))";
} else {
$trackingsql = "AND ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND tf.id IS NULL
AND (SELECT trackforums FROM {user} WHERE id = ?) = 1)";
}
$sql = "SELECT f.id, COUNT(p.id) AS unread
FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {forum} f ON f.id = d.forum
JOIN {course} c ON c.id = f.course
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
LEFT JOIN {forum_track_prefs} tf ON (tf.userid = ? AND tf.forumid = f.id)
WHERE f.course = ?
AND p.modified >= ? AND r.id is NULL
$trackingsql
$timedsql
GROUP BY f.id";
if ($return = $DB->get_records_sql($sql, $params)) {
return $return;
}
return array();
}
/**
* Returns the count of records for the provided user and forum and [optionally] group.
*
* @global object
* @global object
* @global object
* @param object $cm
* @param object $course
* @param bool $resetreadcache optional, true to reset the function static $readcache var
* @return int
*/
function forum_tp_count_forum_unread_posts($cm, $course, $resetreadcache = false) {
global $CFG, $USER, $DB;
static $readcache = array();
if ($resetreadcache) {
$readcache = array();
}
$forumid = $cm->instance;
if (!isset($readcache[$course->id])) {
$readcache[$course->id] = array();
if ($counts = forum_tp_get_course_unread_posts($USER->id, $course->id)) {
foreach ($counts as $count) {
$readcache[$course->id][$count->id] = $count->unread;
}
}
}
if (empty($readcache[$course->id][$forumid])) {
// no need to check group mode ;-)
return 0;
}
$groupmode = groups_get_activity_groupmode($cm, $course);
if ($groupmode != SEPARATEGROUPS) {
return $readcache[$course->id][$forumid];
}
if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id))) {
return $readcache[$course->id][$forumid];
}
require_once($CFG->dirroot.'/course/lib.php');
$modinfo = get_fast_modinfo($course);
$mygroups = $modinfo->get_groups($cm->groupingid);
// add all groups posts
$mygroups[-1] = -1;
list ($groups_sql, $groups_params) = $DB->get_in_or_equal($mygroups);
$now = floor(time() / 60) * 60; // DB Cache friendliness.
$cutoffdate = $now - ($CFG->forum_oldpostdays*24*60*60);
$params = array($USER->id, $forumid, $cutoffdate);
if (!empty($CFG->forum_enabletimedposts)) {
$timedsql = "AND d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)";
$params[] = $now;
$params[] = $now;
} else {
$timedsql = "";
}
$params = array_merge($params, $groups_params);
$sql = "SELECT COUNT(p.id)
FROM {forum_posts} p
JOIN {forum_discussions} d ON p.discussion = d.id
LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = ?)
WHERE d.forum = ?
AND p.modified >= ? AND r.id is NULL
$timedsql
AND d.groupid $groups_sql";
return $DB->get_field_sql($sql, $params);
}
/**
* Deletes read records for the specified index. At least one parameter must be specified.
*
* @global object
* @param int $userid
* @param int $postid
* @param int $discussionid
* @param int $forumid
* @return bool
*/
function forum_tp_delete_read_records($userid=-1, $postid=-1, $discussionid=-1, $forumid=-1) {
global $DB;
$params = array();
$select = '';
if ($userid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'userid = ?';
$params[] = $userid;
}
if ($postid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'postid = ?';
$params[] = $postid;
}
if ($discussionid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'discussionid = ?';
$params[] = $discussionid;
}
if ($forumid > -1) {
if ($select != '') $select .= ' AND ';
$select .= 'forumid = ?';
$params[] = $forumid;
}
if ($select == '') {
return false;
}
else {
return $DB->delete_records_select('forum_read', $select, $params);
}
}
/**
* Get a list of forums not tracked by the user.
*
* @global object
* @global object
* @param int $userid The id of the user to use.
* @param int $courseid The id of the course being checked.
* @return mixed An array indexed by forum id, or false.
*/
function forum_tp_get_untracked_forums($userid, $courseid) {
global $CFG, $DB;
if ($CFG->forum_allowforcedreadtracking) {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_OFF."
OR (f.trackingtype = ".FORUM_TRACKING_OPTIONAL." AND (ft.id IS NOT NULL
OR (SELECT trackforums FROM {user} WHERE id = ?) = 0)))";
} else {
$trackingsql = "AND (f.trackingtype = ".FORUM_TRACKING_OFF."
OR ((f.trackingtype = ".FORUM_TRACKING_OPTIONAL." OR f.trackingtype = ".FORUM_TRACKING_FORCED.")
AND (ft.id IS NOT NULL
OR (SELECT trackforums FROM {user} WHERE id = ?) = 0)))";
}
$sql = "SELECT f.id
FROM {forum} f
LEFT JOIN {forum_track_prefs} ft ON (ft.forumid = f.id AND ft.userid = ?)
WHERE f.course = ?
$trackingsql";
if ($forums = $DB->get_records_sql($sql, array($userid, $courseid, $userid))) {
foreach ($forums as $forum) {
$forums[$forum->id] = $forum;
}
return $forums;
} else {
return array();
}
}
/**
* Determine if a user can track forums and optionally a particular forum.
* Checks the site settings, the user settings and the forum settings (if
* requested).
*
* @global object
* @global object
* @global object
* @param mixed $forum The forum object to test, or the int id (optional).
* @param mixed $userid The user object to check for (optional).
* @return boolean
*/
function forum_tp_can_track_forums($forum=false, $user=false) {
global $USER, $CFG, $DB;
// if possible, avoid expensive
// queries
if (empty($CFG->forum_trackreadposts)) {
return false;
}
if ($user === false) {
$user = $USER;
}
if (isguestuser($user) or empty($user->id)) {
return false;
}
if ($forum === false) {
if ($CFG->forum_allowforcedreadtracking) {
// Since we can force tracking, assume yes without a specific forum.
return true;
} else {
return (bool)$user->trackforums;
}
}
// Work toward always passing an object...
if (is_numeric($forum)) {
debugging('Better use proper forum object.', DEBUG_DEVELOPER);
$forum = $DB->get_record('forum', array('id' => $forum), '', 'id,trackingtype');
}
$forumallows = ($forum->trackingtype == FORUM_TRACKING_OPTIONAL);
$forumforced = ($forum->trackingtype == FORUM_TRACKING_FORCED);
if ($CFG->forum_allowforcedreadtracking) {
// If we allow forcing, then forced forums takes procidence over user setting.
return ($forumforced || ($forumallows && (!empty($user->trackforums) && (bool)$user->trackforums)));
} else {
// If we don't allow forcing, user setting trumps.
return ($forumforced || $forumallows) && !empty($user->trackforums);
}
}
/**
* Tells whether a specific forum is tracked by the user. A user can optionally
* be specified. If not specified, the current user is assumed.
*
* @global object
* @global object
* @global object
* @param mixed $forum If int, the id of the forum being checked; if object, the forum object
* @param int $userid The id of the user being checked (optional).
* @return boolean
*/
function forum_tp_is_tracked($forum, $user=false) {
global $USER, $CFG, $DB;
if ($user === false) {
$user = $USER;
}
if (isguestuser($user) or empty($user->id)) {
return false;
}
// Work toward always passing an object...
if (is_numeric($forum)) {
debugging('Better use proper forum object.', DEBUG_DEVELOPER);
$forum = $DB->get_record('forum', array('id' => $forum));
}
if (!forum_tp_can_track_forums($forum, $user)) {
return false;
}
$forumallows = ($forum->trackingtype == FORUM_TRACKING_OPTIONAL);
$forumforced = ($forum->trackingtype == FORUM_TRACKING_FORCED);
$userpref = $DB->get_record('forum_track_prefs', array('userid' => $user->id, 'forumid' => $forum->id));
if ($CFG->forum_allowforcedreadtracking) {
return $forumforced || ($forumallows && $userpref === false);
} else {
return ($forumallows || $forumforced) && $userpref === false;
}
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
*/
function forum_tp_start_tracking($forumid, $userid=false) {
global $USER, $DB;
if ($userid === false) {
$userid = $USER->id;
}
return $DB->delete_records('forum_track_prefs', array('userid' => $userid, 'forumid' => $forumid));
}
/**
* @global object
* @global object
* @param int $forumid
* @param int $userid
*/
function forum_tp_stop_tracking($forumid, $userid=false) {
global $USER, $DB;
if ($userid === false) {
$userid = $USER->id;
}
if (!$DB->record_exists('forum_track_prefs', array('userid' => $userid, 'forumid' => $forumid))) {
$track_prefs = new stdClass();
$track_prefs->userid = $userid;
$track_prefs->forumid = $forumid;
$DB->insert_record('forum_track_prefs', $track_prefs);
}
return forum_tp_delete_read_records($userid, -1, -1, $forumid);
}
/**
* Clean old records from the forum_read table.
* @global object
* @global object
* @return void
*/
function forum_tp_clean_read_records() {
global $CFG, $DB;
if (!isset($CFG->forum_oldpostdays)) {
return;
}
// Look for records older than the cutoffdate that are still in the forum_read table.
$cutoffdate = time() - ($CFG->forum_oldpostdays*24*60*60);
//first get the oldest tracking present - we need tis to speedup the next delete query
$sql = "SELECT MIN(fp.modified) AS first
FROM {forum_posts} fp
JOIN {forum_read} fr ON fr.postid=fp.id";
if (!$first = $DB->get_field_sql($sql)) {
// nothing to delete;
return;
}
// now delete old tracking info
$sql = "DELETE
FROM {forum_read}
WHERE postid IN (SELECT fp.id
FROM {forum_posts} fp
WHERE fp.modified >= ? AND fp.modified < ?)";
$DB->execute($sql, array($first, $cutoffdate));
}
/**
* Sets the last post for a given discussion
*
* @global object
* @global object
* @param into $discussionid
* @return bool|int
**/
function forum_discussion_update_last_post($discussionid) {
global $CFG, $DB;
// Check the given discussion exists
if (!$DB->record_exists('forum_discussions', array('id' => $discussionid))) {
return false;
}
// Use SQL to find the last post for this discussion
$sql = "SELECT id, userid, modified
FROM {forum_posts}
WHERE discussion=?
ORDER BY modified DESC";
// Lets go find the last post
if (($lastposts = $DB->get_records_sql($sql, array($discussionid), 0, 1))) {
$lastpost = reset($lastposts);
$discussionobject = new stdClass();
$discussionobject->id = $discussionid;
$discussionobject->usermodified = $lastpost->userid;
$discussionobject->timemodified = $lastpost->modified;
$DB->update_record('forum_discussions', $discussionobject);
return $lastpost->id;
}
// To get here either we couldn't find a post for the discussion (weird)
// or we couldn't update the discussion record (weird x2)
return false;
}
/**
* List the actions that correspond to a view of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = 'r' and edulevel = LEVEL_PARTICIPATING will
* be considered as view action.
*
* @return array
*/
function forum_get_view_actions() {
return array('view discussion', 'search', 'forum', 'forums', 'subscribers', 'view forum');
}
/**
* List the options for forum subscription modes.
* This is used by the settings page and by the mod_form page.
*
* @return array
*/
function forum_get_subscriptionmode_options() {
$options = array();
$options[FORUM_CHOOSESUBSCRIBE] = get_string('subscriptionoptional', 'forum');
$options[FORUM_FORCESUBSCRIBE] = get_string('subscriptionforced', 'forum');
$options[FORUM_INITIALSUBSCRIBE] = get_string('subscriptionauto', 'forum');
$options[FORUM_DISALLOWSUBSCRIBE] = get_string('subscriptiondisabled', 'forum');
return $options;
}
/**
* List the actions that correspond to a post of this module.
* This is used by the participation report.
*
* Note: This is not used by new logging system. Event with
* crud = ('c' || 'u' || 'd') and edulevel = LEVEL_PARTICIPATING
* will be considered as post action.
*
* @return array
*/
function forum_get_post_actions() {
return array('add discussion','add post','delete discussion','delete post','move discussion','prune post','update post');
}
/**
* Returns a warning object if a user has reached the number of posts equal to
* the warning/blocking setting, or false if there is no warning to show.
*
* @param int|stdClass $forum the forum id or the forum object
* @param stdClass $cm the course module
* @return stdClass|bool returns an object with the warning information, else
* returns false if no warning is required.
*/
function forum_check_throttling($forum, $cm = null) {
global $CFG, $DB, $USER;
if (is_numeric($forum)) {
$forum = $DB->get_record('forum', array('id' => $forum), '*', MUST_EXIST);
}
if (!is_object($forum)) {
return false; // This is broken.
}
if (!$cm) {
$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course, false, MUST_EXIST);
}
if (empty($forum->blockafter)) {
return false;
}
if (empty($forum->blockperiod)) {
return false;
}
$modcontext = context_module::instance($cm->id);
if (has_capability('mod/forum:postwithoutthrottling', $modcontext)) {
return false;
}
// Get the number of posts in the last period we care about.
$timenow = time();
$timeafter = $timenow - $forum->blockperiod;
$numposts = $DB->count_records_sql('SELECT COUNT(p.id) FROM {forum_posts} p
JOIN {forum_discussions} d
ON p.discussion = d.id WHERE d.forum = ?
AND p.userid = ? AND p.created > ?', array($forum->id, $USER->id, $timeafter));
$a = new stdClass();
$a->blockafter = $forum->blockafter;
$a->numposts = $numposts;
$a->blockperiod = get_string('secondstotime'.$forum->blockperiod);
if ($forum->blockafter <= $numposts) {
$warning = new stdClass();
$warning->canpost = false;
$warning->errorcode = 'forumblockingtoomanyposts';
$warning->module = 'error';
$warning->additional = $a;
$warning->link = $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id;
return $warning;
}
if ($forum->warnafter <= $numposts) {
$warning = new stdClass();
$warning->canpost = true;
$warning->errorcode = 'forumblockingalmosttoomanyposts';
$warning->module = 'forum';
$warning->additional = $a;
$warning->link = null;
return $warning;
}
}
/**
* Throws an error if the user is no longer allowed to post due to having reached
* or exceeded the number of posts specified in 'Post threshold for blocking'
* setting.
*
* @since Moodle 2.5
* @param stdClass $thresholdwarning the warning information returned
* from the function forum_check_throttling.
*/
function forum_check_blocking_threshold($thresholdwarning) {
if (!empty($thresholdwarning) && !$thresholdwarning->canpost) {
print_error($thresholdwarning->errorcode,
$thresholdwarning->module,
$thresholdwarning->link,
$thresholdwarning->additional);
}
}
/**
* Removes all grades from gradebook
*
* @global object
* @global object
* @param int $courseid
* @param string $type optional
*/
function forum_reset_gradebook($courseid, $type='') {
global $CFG, $DB;
$wheresql = '';
$params = array($courseid);
if ($type) {
$wheresql = "AND f.type=?";
$params[] = $type;
}
$sql = "SELECT f.*, cm.idnumber as cmidnumber, f.course as courseid
FROM {forum} f, {course_modules} cm, {modules} m
WHERE m.name='forum' AND m.id=cm.module AND cm.instance=f.id AND f.course=? $wheresql";
if ($forums = $DB->get_records_sql($sql, $params)) {
foreach ($forums as $forum) {
forum_grade_item_update($forum, 'reset');
}
}
}
/**
* This function is used by the reset_course_userdata function in moodlelib.
* This function will remove all posts from the specified forum
* and clean up any related data.
*
* @global object
* @global object
* @param $data the data submitted from the reset course.
* @return array status array
*/
function forum_reset_userdata($data) {
global $CFG, $DB;
require_once($CFG->dirroot.'/rating/lib.php');
$componentstr = get_string('modulenameplural', 'forum');
$status = array();
$params = array($data->courseid);
$removeposts = false;
$typesql = "";
if (!empty($data->reset_forum_all)) {
$removeposts = true;
$typesstr = get_string('resetforumsall', 'forum');
$types = array();
} else if (!empty($data->reset_forum_types)){
$removeposts = true;
$types = array();
$sqltypes = array();
$forum_types_all = forum_get_forum_types_all();
foreach ($data->reset_forum_types as $type) {
if (!array_key_exists($type, $forum_types_all)) {
continue;
}
$types[] = $forum_types_all[$type];
$sqltypes[] = $type;
}
if (!empty($sqltypes)) {
list($typesql, $typeparams) = $DB->get_in_or_equal($sqltypes);
$typesql = " AND f.type " . $typesql;
$params = array_merge($params, $typeparams);
}
$typesstr = get_string('resetforums', 'forum').': '.implode(', ', $types);
}
$alldiscussionssql = "SELECT fd.id
FROM {forum_discussions} fd, {forum} f
WHERE f.course=? AND f.id=fd.forum";
$allforumssql = "SELECT f.id
FROM {forum} f
WHERE f.course=?";
$allpostssql = "SELECT fp.id
FROM {forum_posts} fp, {forum_discussions} fd, {forum} f
WHERE f.course=? AND f.id=fd.forum AND fd.id=fp.discussion";
$forumssql = $forums = $rm = null;
// Check if we need to get additional data.
if ($removeposts || !empty($data->reset_forum_ratings) || !empty($data->reset_forum_tags)) {
// Set this up if we have to remove ratings.
$rm = new rating_manager();
$ratingdeloptions = new stdClass;
$ratingdeloptions->component = 'mod_forum';
$ratingdeloptions->ratingarea = 'post';
// Get the forums for actions that require it.
$forumssql = "$allforumssql $typesql";
$forums = $DB->get_records_sql($forumssql, $params);
}
if ($removeposts) {
$discussionssql = "$alldiscussionssql $typesql";
$postssql = "$allpostssql $typesql";
// now get rid of all attachments
$fs = get_file_storage();
if ($forums) {
foreach ($forums as $forumid=>$unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
$fs->delete_area_files($context->id, 'mod_forum', 'attachment');
$fs->delete_area_files($context->id, 'mod_forum', 'post');
//remove ratings
$ratingdeloptions->contextid = $context->id;
$rm->delete_ratings($ratingdeloptions);
core_tag_tag::delete_instances('mod_forum', null, $context->id);
}
}
// first delete all read flags
$DB->delete_records_select('forum_read', "forumid IN ($forumssql)", $params);
// remove tracking prefs
$DB->delete_records_select('forum_track_prefs', "forumid IN ($forumssql)", $params);
// remove posts from queue
$DB->delete_records_select('forum_queue', "discussionid IN ($discussionssql)", $params);
// all posts - initial posts must be kept in single simple discussion forums
$DB->delete_records_select('forum_posts', "discussion IN ($discussionssql) AND parent <> 0", $params); // first all children
$DB->delete_records_select('forum_posts', "discussion IN ($discussionssql AND f.type <> 'single') AND parent = 0", $params); // now the initial posts for non single simple
// finally all discussions except single simple forums
$DB->delete_records_select('forum_discussions', "forum IN ($forumssql AND f.type <> 'single')", $params);
// remove all grades from gradebook
if (empty($data->reset_gradebook_grades)) {
if (empty($types)) {
forum_reset_gradebook($data->courseid);
} else {
foreach ($types as $type) {
forum_reset_gradebook($data->courseid, $type);
}
}
}
$status[] = array('component'=>$componentstr, 'item'=>$typesstr, 'error'=>false);
}
// remove all ratings in this course's forums
if (!empty($data->reset_forum_ratings)) {
if ($forums) {
foreach ($forums as $forumid=>$unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
//remove ratings
$ratingdeloptions->contextid = $context->id;
$rm->delete_ratings($ratingdeloptions);
}
}
// remove all grades from gradebook
if (empty($data->reset_gradebook_grades)) {
forum_reset_gradebook($data->courseid);
}
}
// Remove all the tags.
if (!empty($data->reset_forum_tags)) {
if ($forums) {
foreach ($forums as $forumid => $unused) {
if (!$cm = get_coursemodule_from_instance('forum', $forumid)) {
continue;
}
$context = context_module::instance($cm->id);
core_tag_tag::delete_instances('mod_forum', null, $context->id);
}
}
$status[] = array('component' => $componentstr, 'item' => get_string('tagsdeleted', 'forum'), 'error' => false);
}
// remove all digest settings unconditionally - even for users still enrolled in course.
if (!empty($data->reset_forum_digests)) {
$DB->delete_records_select('forum_digests', "forum IN ($allforumssql)", $params);
$status[] = array('component' => $componentstr, 'item' => get_string('resetdigests', 'forum'), 'error' => false);
}
// remove all subscriptions unconditionally - even for users still enrolled in course
if (!empty($data->reset_forum_subscriptions)) {
$DB->delete_records_select('forum_subscriptions', "forum IN ($allforumssql)", $params);
$DB->delete_records_select('forum_discussion_subs', "forum IN ($allforumssql)", $params);
$status[] = array('component' => $componentstr, 'item' => get_string('resetsubscriptions', 'forum'), 'error' => false);
}
// remove all tracking prefs unconditionally - even for users still enrolled in course
if (!empty($data->reset_forum_track_prefs)) {
$DB->delete_records_select('forum_track_prefs', "forumid IN ($allforumssql)", $params);
$status[] = array('component'=>$componentstr, 'item'=>get_string('resettrackprefs','forum'), 'error'=>false);
}
/// updating dates - shift may be negative too
if ($data->timeshift) {
// Any changes to the list of dates that needs to be rolled should be same during course restore and course reset.
// See MDL-9367.
shift_course_mod_dates('forum', array('assesstimestart', 'assesstimefinish'), $data->timeshift, $data->courseid);
$status[] = array('component'=>$componentstr, 'item'=>get_string('datechanged'), 'error'=>false);
}
return $status;
}
/**
* Called by course/reset.php
*
* @param $mform form passed by reference
*/
function forum_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'forumheader', get_string('modulenameplural', 'forum'));
$mform->addElement('checkbox', 'reset_forum_all', get_string('resetforumsall','forum'));
$mform->addElement('select', 'reset_forum_types', get_string('resetforums', 'forum'), forum_get_forum_types_all(), array('multiple' => 'multiple'));
$mform->setAdvanced('reset_forum_types');
$mform->disabledIf('reset_forum_types', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_digests', get_string('resetdigests','forum'));
$mform->setAdvanced('reset_forum_digests');
$mform->addElement('checkbox', 'reset_forum_subscriptions', get_string('resetsubscriptions','forum'));
$mform->setAdvanced('reset_forum_subscriptions');
$mform->addElement('checkbox', 'reset_forum_track_prefs', get_string('resettrackprefs','forum'));
$mform->setAdvanced('reset_forum_track_prefs');
$mform->disabledIf('reset_forum_track_prefs', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_ratings', get_string('deleteallratings'));
$mform->disabledIf('reset_forum_ratings', 'reset_forum_all', 'checked');
$mform->addElement('checkbox', 'reset_forum_tags', get_string('removeallforumtags', 'forum'));
$mform->disabledIf('reset_forum_tags', 'reset_forum_all', 'checked');
}
/**
* Course reset form defaults.
* @return array
*/
function forum_reset_course_form_defaults($course) {
return array('reset_forum_all'=>1, 'reset_forum_digests' => 0, 'reset_forum_subscriptions'=>0, 'reset_forum_track_prefs'=>0, 'reset_forum_ratings'=>1);
}
/**
* Returns array of forum layout modes
*
* @return array
*/
function forum_get_layout_modes() {
return array (FORUM_MODE_FLATOLDEST => get_string('modeflatoldestfirst', 'forum'),
FORUM_MODE_FLATNEWEST => get_string('modeflatnewestfirst', 'forum'),
FORUM_MODE_THREADED => get_string('modethreaded', 'forum'),
FORUM_MODE_NESTED => get_string('modenested', 'forum'));
}
/**
* Returns array of forum types chooseable on the forum editing form
*
* @return array
*/
function forum_get_forum_types() {
return array ('general' => get_string('generalforum', 'forum'),
'eachuser' => get_string('eachuserforum', 'forum'),
'single' => get_string('singleforum', 'forum'),
'qanda' => get_string('qandaforum', 'forum'),
'blog' => get_string('blogforum', 'forum'));
}
/**
* Returns array of all forum layout modes
*
* @return array
*/
function forum_get_forum_types_all() {
return array ('news' => get_string('namenews','forum'),
'social' => get_string('namesocial','forum'),
'general' => get_string('generalforum', 'forum'),
'eachuser' => get_string('eachuserforum', 'forum'),
'single' => get_string('singleforum', 'forum'),
'qanda' => get_string('qandaforum', 'forum'),
'blog' => get_string('blogforum', 'forum'));
}
/**
* Returns all other caps used in module
*
* @return array
*/
function forum_get_extra_capabilities() {
return array('moodle/site:accessallgroups', 'moodle/site:viewfullnames', 'moodle/site:trustcontent', 'moodle/rating:view', 'moodle/rating:viewany', 'moodle/rating:viewall', 'moodle/rating:rate');
}
/**
* Adds module specific settings to the settings block
*
* @param settings_navigation $settings The settings navigation object
* @param navigation_node $forumnode The node to add module settings to
*/
function forum_extend_settings_navigation(settings_navigation $settingsnav, navigation_node $forumnode) {
global $USER, $PAGE, $CFG, $DB, $OUTPUT;
$forumobject = $DB->get_record("forum", array("id" => $PAGE->cm->instance));
if (empty($PAGE->cm->context)) {
$PAGE->cm->context = context_module::instance($PAGE->cm->instance);
}
$params = $PAGE->url->params();
if (!empty($params['d'])) {
$discussionid = $params['d'];
}
// for some actions you need to be enrolled, beiing admin is not enough sometimes here
$enrolled = is_enrolled($PAGE->cm->context, $USER, '', false);
$activeenrolled = is_enrolled($PAGE->cm->context, $USER, '', true);
$canmanage = has_capability('mod/forum:managesubscriptions', $PAGE->cm->context);
$subscriptionmode = \mod_forum\subscriptions::get_subscription_mode($forumobject);
$cansubscribe = $activeenrolled && !\mod_forum\subscriptions::is_forcesubscribed($forumobject) &&
(!\mod_forum\subscriptions::subscription_disabled($forumobject) || $canmanage);
if ($canmanage) {
$mode = $forumnode->add(get_string('subscriptionmode', 'forum'), null, navigation_node::TYPE_CONTAINER);
$mode->add_class('subscriptionmode');
$allowchoice = $mode->add(get_string('subscriptionoptional', 'forum'), new moodle_url('/mod/forum/subscribe.php', array('id'=>$forumobject->id, 'mode'=>FORUM_CHOOSESUBSCRIBE, 'sesskey'=>sesskey())), navigation_node::TYPE_SETTING);
$forceforever = $mode->add(get_string("subscriptionforced", "forum"), new moodle_url('/mod/forum/subscribe.php', array('id'=>$forumobject->id, 'mode'=>FORUM_FORCESUBSCRIBE, 'sesskey'=>sesskey())), navigation_node::TYPE_SETTING);
$forceinitially = $mode->add(get_string("subscriptionauto", "forum"), new moodle_url('/mod/forum/subscribe.php', array('id'=>$forumobject->id, 'mode'=>FORUM_INITIALSUBSCRIBE, 'sesskey'=>sesskey())), navigation_node::TYPE_SETTING);
$disallowchoice = $mode->add(get_string('subscriptiondisabled', 'forum'), new moodle_url('/mod/forum/subscribe.php', array('id'=>$forumobject->id, 'mode'=>FORUM_DISALLOWSUBSCRIBE, 'sesskey'=>sesskey())), navigation_node::TYPE_SETTING);
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE : // 0
$allowchoice->action = null;
$allowchoice->add_class('activesetting');
$allowchoice->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_FORCESUBSCRIBE : // 1
$forceforever->action = null;
$forceforever->add_class('activesetting');
$forceforever->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_INITIALSUBSCRIBE : // 2
$forceinitially->action = null;
$forceinitially->add_class('activesetting');
$forceinitially->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
case FORUM_DISALLOWSUBSCRIBE : // 3
$disallowchoice->action = null;
$disallowchoice->add_class('activesetting');
$disallowchoice->icon = new pix_icon('t/selected', '', 'mod_forum');
break;
}
} else if ($activeenrolled) {
switch ($subscriptionmode) {
case FORUM_CHOOSESUBSCRIBE : // 0
$notenode = $forumnode->add(get_string('subscriptionoptional', 'forum'));
break;
case FORUM_FORCESUBSCRIBE : // 1
$notenode = $forumnode->add(get_string('subscriptionforced', 'forum'));
break;
case FORUM_INITIALSUBSCRIBE : // 2
$notenode = $forumnode->add(get_string('subscriptionauto', 'forum'));
break;
case FORUM_DISALLOWSUBSCRIBE : // 3
$notenode = $forumnode->add(get_string('subscriptiondisabled', 'forum'));
break;
}
}
if ($cansubscribe) {
if (\mod_forum\subscriptions::is_subscribed($USER->id, $forumobject, null, $PAGE->cm)) {
$linktext = get_string('unsubscribe', 'forum');
} else {
$linktext = get_string('subscribe', 'forum');
}
$url = new moodle_url('/mod/forum/subscribe.php', array('id'=>$forumobject->id, 'sesskey'=>sesskey()));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
if (isset($discussionid)) {
if (\mod_forum\subscriptions::is_subscribed($USER->id, $forumobject, $discussionid, $PAGE->cm)) {
$linktext = get_string('unsubscribediscussion', 'forum');
} else {
$linktext = get_string('subscribediscussion', 'forum');
}
$url = new moodle_url('/mod/forum/subscribe.php', array(
'id' => $forumobject->id,
'sesskey' => sesskey(),
'd' => $discussionid,
'returnurl' => $PAGE->url->out(),
));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
}
}
if (has_capability('mod/forum:viewsubscribers', $PAGE->cm->context)){
$url = new moodle_url('/mod/forum/subscribers.php', array('id'=>$forumobject->id));
$forumnode->add(get_string('showsubscribers', 'forum'), $url, navigation_node::TYPE_SETTING);
}
if ($enrolled && forum_tp_can_track_forums($forumobject)) { // keep tracking info for users with suspended enrolments
if ($forumobject->trackingtype == FORUM_TRACKING_OPTIONAL
|| ((!$CFG->forum_allowforcedreadtracking) && $forumobject->trackingtype == FORUM_TRACKING_FORCED)) {
if (forum_tp_is_tracked($forumobject)) {
$linktext = get_string('notrackforum', 'forum');
} else {
$linktext = get_string('trackforum', 'forum');
}
$url = new moodle_url('/mod/forum/settracking.php', array(
'id' => $forumobject->id,
'sesskey' => sesskey(),
));
$forumnode->add($linktext, $url, navigation_node::TYPE_SETTING);
}
}
if (!isloggedin() && $PAGE->course->id == SITEID) {
$userid = guest_user()->id;
} else {
$userid = $USER->id;
}
$hascourseaccess = ($PAGE->course->id == SITEID) || can_access_course($PAGE->course, $userid);
$enablerssfeeds = !empty($CFG->enablerssfeeds) && !empty($CFG->forum_enablerssfeeds);
if ($enablerssfeeds && $forumobject->rsstype && $forumobject->rssarticles && $hascourseaccess) {
if (!function_exists('rss_get_url')) {
require_once("$CFG->libdir/rsslib.php");
}
if ($forumobject->rsstype == 1) {
$string = get_string('rsssubscriberssdiscussions','forum');
} else {
$string = get_string('rsssubscriberssposts','forum');
}
$url = new moodle_url(rss_get_url($PAGE->cm->context->id, $userid, "mod_forum", $forumobject->id));
$forumnode->add($string, $url, settings_navigation::TYPE_SETTING, null, null, new pix_icon('i/rss', ''));
}
}
/**
* Adds information about unread messages, that is only required for the course view page (and
* similar), to the course-module object.
* @param cm_info $cm Course-module object
*/
function forum_cm_info_view(cm_info $cm) {
global $CFG;
if (forum_tp_can_track_forums()) {
if ($unread = forum_tp_count_forum_unread_posts($cm, $cm->get_course())) {
$out = ' ';
if ($unread == 1) {
$out .= get_string('unreadpostsone', 'forum');
} else {
$out .= get_string('unreadpostsnumber', 'forum', $unread);
}
$out .= '';
$cm->set_after_link($out);
}
}
}
/**
* Return a list of page types
* @param string $pagetype current page type
* @param stdClass $parentcontext Block's parent context
* @param stdClass $currentcontext Current context of block
*/
function forum_page_type_list($pagetype, $parentcontext, $currentcontext) {
$forum_pagetype = array(
'mod-forum-*'=>get_string('page-mod-forum-x', 'forum'),
'mod-forum-view'=>get_string('page-mod-forum-view', 'forum'),
'mod-forum-discuss'=>get_string('page-mod-forum-discuss', 'forum')
);
return $forum_pagetype;
}
/**
* Gets all of the courses where the provided user has posted in a forum.
*
* @global moodle_database $DB The database connection
* @param stdClass $user The user who's posts we are looking for
* @param bool $discussionsonly If true only look for discussions started by the user
* @param bool $includecontexts If set to trye contexts for the courses will be preloaded
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return array An array of courses
*/
function forum_get_courses_user_posted_in($user, $discussionsonly = false, $includecontexts = true, $limitfrom = null, $limitnum = null) {
global $DB;
// If we are only after discussions we need only look at the forum_discussions
// table and join to the userid there. If we are looking for posts then we need
// to join to the forum_posts table.
if (!$discussionsonly) {
$subquery = "(SELECT DISTINCT fd.course
FROM {forum_discussions} fd
JOIN {forum_posts} fp ON fp.discussion = fd.id
WHERE fp.userid = :userid )";
} else {
$subquery= "(SELECT DISTINCT fd.course
FROM {forum_discussions} fd
WHERE fd.userid = :userid )";
}
$params = array('userid' => $user->id);
// Join to the context table so that we can preload contexts if required.
if ($includecontexts) {
$ctxselect = ', ' . context_helper::get_preload_record_columns_sql('ctx');
$ctxjoin = "LEFT JOIN {context} ctx ON (ctx.instanceid = c.id AND ctx.contextlevel = :contextlevel)";
$params['contextlevel'] = CONTEXT_COURSE;
} else {
$ctxselect = '';
$ctxjoin = '';
}
// Now we need to get all of the courses to search.
// All courses where the user has posted within a forum will be returned.
$sql = "SELECT c.* $ctxselect
FROM {course} c
$ctxjoin
WHERE c.id IN ($subquery)";
$courses = $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
if ($includecontexts) {
array_map('context_helper::preload_from_record', $courses);
}
return $courses;
}
/**
* Gets all of the forums a user has posted in for one or more courses.
*
* @global moodle_database $DB
* @param stdClass $user
* @param array $courseids An array of courseids to search or if not provided
* all courses the user has posted within
* @param bool $discussionsonly If true then only forums where the user has started
* a discussion will be returned.
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return array An array of forums the user has posted within in the provided courses
*/
function forum_get_forums_user_posted_in($user, array $courseids = null, $discussionsonly = false, $limitfrom = null, $limitnum = null) {
global $DB;
if (!is_null($courseids)) {
list($coursewhere, $params) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED, 'courseid');
$coursewhere = ' AND f.course '.$coursewhere;
} else {
$coursewhere = '';
$params = array();
}
$params['userid'] = $user->id;
$params['forum'] = 'forum';
if ($discussionsonly) {
$join = 'JOIN {forum_discussions} ff ON ff.forum = f.id';
} else {
$join = 'JOIN {forum_discussions} fd ON fd.forum = f.id
JOIN {forum_posts} ff ON ff.discussion = fd.id';
}
$sql = "SELECT f.*, cm.id AS cmid
FROM {forum} f
JOIN {course_modules} cm ON cm.instance = f.id
JOIN {modules} m ON m.id = cm.module
JOIN (
SELECT f.id
FROM {forum} f
{$join}
WHERE ff.userid = :userid
GROUP BY f.id
) j ON j.id = f.id
WHERE m.name = :forum
{$coursewhere}";
$courseforums = $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
return $courseforums;
}
/**
* Returns posts made by the selected user in the requested courses.
*
* This method can be used to return all of the posts made by the requested user
* within the given courses.
* For each course the access of the current user and requested user is checked
* and then for each post access to the post and forum is checked as well.
*
* This function is safe to use with usercapabilities.
*
* @global moodle_database $DB
* @param stdClass $user The user whose posts we want to get
* @param array $courses The courses to search
* @param bool $musthaveaccess If set to true errors will be thrown if the user
* cannot access one or more of the courses to search
* @param bool $discussionsonly If set to true only discussion starting posts
* will be returned.
* @param int $limitfrom The offset of records to return
* @param int $limitnum The number of records to return
* @return stdClass An object the following properties
* ->totalcount: the total number of posts made by the requested user
* that the current user can see.
* ->courses: An array of courses the current user can see that the
* requested user has posted in.
* ->forums: An array of forums relating to the posts returned in the
* property below.
* ->posts: An array containing the posts to show for this request.
*/
function forum_get_posts_by_user($user, array $courses, $musthaveaccess = false, $discussionsonly = false, $limitfrom = 0, $limitnum = 50) {
global $DB, $USER, $CFG;
$return = new stdClass;
$return->totalcount = 0; // The total number of posts that the current user is able to view
$return->courses = array(); // The courses the current user can access
$return->forums = array(); // The forums that the current user can access that contain posts
$return->posts = array(); // The posts to display
// First up a small sanity check. If there are no courses to check we can
// return immediately, there is obviously nothing to search.
if (empty($courses)) {
return $return;
}
// A couple of quick setups
$isloggedin = isloggedin();
$isguestuser = $isloggedin && isguestuser();
$iscurrentuser = $isloggedin && $USER->id == $user->id;
// Checkout whether or not the current user has capabilities over the requested
// user and if so they have the capabilities required to view the requested
// users content.
$usercontext = context_user::instance($user->id, MUST_EXIST);
$hascapsonuser = !$iscurrentuser && $DB->record_exists('role_assignments', array('userid' => $USER->id, 'contextid' => $usercontext->id));
$hascapsonuser = $hascapsonuser && has_all_capabilities(array('moodle/user:viewdetails', 'moodle/user:readuserposts'), $usercontext);
// Before we actually search each course we need to check the user's access to the
// course. If the user doesn't have the appropraite access then we either throw an
// error if a particular course was requested or we just skip over the course.
foreach ($courses as $course) {
$coursecontext = context_course::instance($course->id, MUST_EXIST);
if ($iscurrentuser || $hascapsonuser) {
// If it is the current user, or the current user has capabilities to the
// requested user then all we need to do is check the requested users
// current access to the course.
// Note: There is no need to check group access or anything of the like
// as either the current user is the requested user, or has granted
// capabilities on the requested user. Either way they can see what the
// requested user posted, although its VERY unlikely in the `parent` situation
// that the current user will be able to view the posts in context.
if (!is_viewing($coursecontext, $user) && !is_enrolled($coursecontext, $user)) {
// Need to have full access to a course to see the rest of own info
if ($musthaveaccess) {
print_error('errorenrolmentrequired', 'forum');
}
continue;
}
} else {
// Check whether the current user is enrolled or has access to view the course
// if they don't we immediately have a problem.
if (!can_access_course($course)) {
if ($musthaveaccess) {
print_error('errorenrolmentrequired', 'forum');
}
continue;
}
// If groups are in use and enforced throughout the course then make sure
// we can meet in at least one course level group.
// Note that we check if either the current user or the requested user have
// the capability to access all groups. This is because with that capability
// a user in group A could post in the group B forum. Grrrr.
if (groups_get_course_groupmode($course) == SEPARATEGROUPS && $course->groupmodeforce
&& !has_capability('moodle/site:accessallgroups', $coursecontext) && !has_capability('moodle/site:accessallgroups', $coursecontext, $user->id)) {
// If its the guest user to bad... the guest user cannot access groups
if (!$isloggedin or $isguestuser) {
// do not use require_login() here because we might have already used require_login($course)
if ($musthaveaccess) {
redirect(get_login_url());
}
continue;
}
// Get the groups of the current user
$mygroups = array_keys(groups_get_all_groups($course->id, $USER->id, $course->defaultgroupingid, 'g.id, g.name'));
// Get the groups the requested user is a member of
$usergroups = array_keys(groups_get_all_groups($course->id, $user->id, $course->defaultgroupingid, 'g.id, g.name'));
// Check whether they are members of the same group. If they are great.
$intersect = array_intersect($mygroups, $usergroups);
if (empty($intersect)) {
// But they're not... if it was a specific course throw an error otherwise
// just skip this course so that it is not searched.
if ($musthaveaccess) {
print_error("groupnotamember", '', $CFG->wwwroot."/course/view.php?id=$course->id");
}
continue;
}
}
}
// Woo hoo we got this far which means the current user can search this
// this course for the requested user. Although this is only the course accessibility
// handling that is complete, the forum accessibility tests are yet to come.
$return->courses[$course->id] = $course;
}
// No longer beed $courses array - lose it not it may be big
unset($courses);
// Make sure that we have some courses to search
if (empty($return->courses)) {
// If we don't have any courses to search then the reality is that the current
// user doesn't have access to any courses is which the requested user has posted.
// Although we do know at this point that the requested user has posts.
if ($musthaveaccess) {
print_error('permissiondenied');
} else {
return $return;
}
}
// Next step: Collect all of the forums that we will want to search.
// It is important to note that this step isn't actually about searching, it is
// about determining which forums we can search by testing accessibility.
$forums = forum_get_forums_user_posted_in($user, array_keys($return->courses), $discussionsonly);
// Will be used to build the where conditions for the search
$forumsearchwhere = array();
// Will be used to store the where condition params for the search
$forumsearchparams = array();
// Will record forums where the user can freely access everything
$forumsearchfullaccess = array();
// DB caching friendly
$now = floor(time() / 60) * 60;
// For each course to search we want to find the forums the user has posted in
// and providing the current user can access the forum create a search condition
// for the forum to get the requested users posts.
foreach ($return->courses as $course) {
// Now we need to get the forums
$modinfo = get_fast_modinfo($course);
if (empty($modinfo->instances['forum'])) {
// hmmm, no forums? well at least its easy... skip!
continue;
}
// Iterate
foreach ($modinfo->get_instances_of('forum') as $forumid => $cm) {
if (!$cm->uservisible or !isset($forums[$forumid])) {
continue;
}
// Get the forum in question
$forum = $forums[$forumid];
// This is needed for functionality later on in the forum code. It is converted to an object
// because the cm_info is readonly from 2.6. This is a dirty hack because some other parts of the
// code were expecting an writeable object. See {@link forum_print_post()}.
$forum->cm = new stdClass();
foreach ($cm as $key => $value) {
$forum->cm->$key = $value;
}
// Check that either the current user can view the forum, or that the
// current user has capabilities over the requested user and the requested
// user can view the discussion
if (!has_capability('mod/forum:viewdiscussion', $cm->context) && !($hascapsonuser && has_capability('mod/forum:viewdiscussion', $cm->context, $user->id))) {
continue;
}
// This will contain forum specific where clauses
$forumsearchselect = array();
if (!$iscurrentuser && !$hascapsonuser) {
// Make sure we check group access
if (groups_get_activity_groupmode($cm, $course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $cm->context)) {
$groups = $modinfo->get_groups($cm->groupingid);
$groups[] = -1;
list($groupid_sql, $groupid_params) = $DB->get_in_or_equal($groups, SQL_PARAMS_NAMED, 'grps'.$forumid.'_');
$forumsearchparams = array_merge($forumsearchparams, $groupid_params);
$forumsearchselect[] = "d.groupid $groupid_sql";
}
// hidden timed discussions
if (!empty($CFG->forum_enabletimedposts) && !has_capability('mod/forum:viewhiddentimedposts', $cm->context)) {
$forumsearchselect[] = "(d.userid = :userid{$forumid} OR (d.timestart < :timestart{$forumid} AND (d.timeend = 0 OR d.timeend > :timeend{$forumid})))";
$forumsearchparams['userid'.$forumid] = $user->id;
$forumsearchparams['timestart'.$forumid] = $now;
$forumsearchparams['timeend'.$forumid] = $now;
}
// qanda access
if ($forum->type == 'qanda' && !has_capability('mod/forum:viewqandawithoutposting', $cm->context)) {
// We need to check whether the user has posted in the qanda forum.
$discussionspostedin = forum_discussions_user_has_posted_in($forum->id, $user->id);
if (!empty($discussionspostedin)) {
$forumonlydiscussions = array(); // Holds discussion ids for the discussions the user is allowed to see in this forum.
foreach ($discussionspostedin as $d) {
$forumonlydiscussions[] = $d->id;
}
list($discussionid_sql, $discussionid_params) = $DB->get_in_or_equal($forumonlydiscussions, SQL_PARAMS_NAMED, 'qanda'.$forumid.'_');
$forumsearchparams = array_merge($forumsearchparams, $discussionid_params);
$forumsearchselect[] = "(d.id $discussionid_sql OR p.parent = 0)";
} else {
$forumsearchselect[] = "p.parent = 0";
}
}
if (count($forumsearchselect) > 0) {
$forumsearchwhere[] = "(d.forum = :forum{$forumid} AND ".implode(" AND ", $forumsearchselect).")";
$forumsearchparams['forum'.$forumid] = $forumid;
} else {
$forumsearchfullaccess[] = $forumid;
}
} else {
// The current user/parent can see all of their own posts
$forumsearchfullaccess[] = $forumid;
}
}
}
// If we dont have any search conditions, and we don't have any forums where
// the user has full access then we just return the default.
if (empty($forumsearchwhere) && empty($forumsearchfullaccess)) {
return $return;
}
// Prepare a where condition for the full access forums.
if (count($forumsearchfullaccess) > 0) {
list($fullidsql, $fullidparams) = $DB->get_in_or_equal($forumsearchfullaccess, SQL_PARAMS_NAMED, 'fula');
$forumsearchparams = array_merge($forumsearchparams, $fullidparams);
$forumsearchwhere[] = "(d.forum $fullidsql)";
}
// Prepare SQL to both count and search.
// We alias user.id to useridx because we forum_posts already has a userid field and not aliasing this would break
// oracle and mssql.
$userfields = user_picture::fields('u', null, 'useridx');
$countsql = 'SELECT COUNT(*) ';
$selectsql = 'SELECT p.*, d.forum, d.name AS discussionname, '.$userfields.' ';
$wheresql = implode(" OR ", $forumsearchwhere);
if ($discussionsonly) {
if ($wheresql == '') {
$wheresql = 'p.parent = 0';
} else {
$wheresql = 'p.parent = 0 AND ('.$wheresql.')';
}
}
$sql = "FROM {forum_posts} p
JOIN {forum_discussions} d ON d.id = p.discussion
JOIN {user} u ON u.id = p.userid
WHERE ($wheresql)
AND p.userid = :userid ";
$orderby = "ORDER BY p.modified DESC";
$forumsearchparams['userid'] = $user->id;
// Set the total number posts made by the requested user that the current user can see
$return->totalcount = $DB->count_records_sql($countsql.$sql, $forumsearchparams);
// Set the collection of posts that has been requested
$return->posts = $DB->get_records_sql($selectsql.$sql.$orderby, $forumsearchparams, $limitfrom, $limitnum);
// We need to build an array of forums for which posts will be displayed.
// We do this here to save the caller needing to retrieve them themselves before
// printing these forums posts. Given we have the forums already there is
// practically no overhead here.
foreach ($return->posts as $post) {
if (!array_key_exists($post->forum, $return->forums)) {
$return->forums[$post->forum] = $forums[$post->forum];
}
}
return $return;
}
/**
* Set the per-forum maildigest option for the specified user.
*
* @param stdClass $forum The forum to set the option for.
* @param int $maildigest The maildigest option.
* @param stdClass $user The user object. This defaults to the global $USER object.
* @throws invalid_digest_setting thrown if an invalid maildigest option is provided.
*/
function forum_set_user_maildigest($forum, $maildigest, $user = null) {
global $DB, $USER;
if (is_number($forum)) {
$forum = $DB->get_record('forum', array('id' => $forum));
}
if ($user === null) {
$user = $USER;
}
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id, false, MUST_EXIST);
$context = context_module::instance($cm->id);
// User must be allowed to see this forum.
require_capability('mod/forum:viewdiscussion', $context, $user->id);
// Validate the maildigest setting.
$digestoptions = forum_get_user_digest_options($user);
if (!isset($digestoptions[$maildigest])) {
throw new moodle_exception('invaliddigestsetting', 'mod_forum');
}
// Attempt to retrieve any existing forum digest record.
$subscription = $DB->get_record('forum_digests', array(
'userid' => $user->id,
'forum' => $forum->id,
));
// Create or Update the existing maildigest setting.
if ($subscription) {
if ($maildigest == -1) {
$DB->delete_records('forum_digests', array('forum' => $forum->id, 'userid' => $user->id));
} else if ($maildigest !== $subscription->maildigest) {
// Only update the maildigest setting if it's changed.
$subscription->maildigest = $maildigest;
$DB->update_record('forum_digests', $subscription);
}
} else {
if ($maildigest != -1) {
// Only insert the maildigest setting if it's non-default.
$subscription = new stdClass();
$subscription->forum = $forum->id;
$subscription->userid = $user->id;
$subscription->maildigest = $maildigest;
$subscription->id = $DB->insert_record('forum_digests', $subscription);
}
}
}
/**
* Determine the maildigest setting for the specified user against the
* specified forum.
*
* @param Array $digests An array of forums and user digest settings.
* @param stdClass $user The user object containing the id and maildigest default.
* @param int $forumid The ID of the forum to check.
* @return int The calculated maildigest setting for this user and forum.
*/
function forum_get_user_maildigest_bulk($digests, $user, $forumid) {
if (isset($digests[$forumid]) && isset($digests[$forumid][$user->id])) {
$maildigest = $digests[$forumid][$user->id];
if ($maildigest === -1) {
$maildigest = $user->maildigest;
}
} else {
$maildigest = $user->maildigest;
}
return $maildigest;
}
/**
* Retrieve the list of available user digest options.
*
* @param stdClass $user The user object. This defaults to the global $USER object.
* @return array The mapping of values to digest options.
*/
function forum_get_user_digest_options($user = null) {
global $USER;
// Revert to the global user object.
if ($user === null) {
$user = $USER;
}
$digestoptions = array();
$digestoptions['0'] = get_string('emaildigestoffshort', 'mod_forum');
$digestoptions['1'] = get_string('emaildigestcompleteshort', 'mod_forum');
$digestoptions['2'] = get_string('emaildigestsubjectsshort', 'mod_forum');
// We need to add the default digest option at the end - it relies on
// the contents of the existing values.
$digestoptions['-1'] = get_string('emaildigestdefault', 'mod_forum',
$digestoptions[$user->maildigest]);
// Resort the options to be in a sensible order.
ksort($digestoptions);
return $digestoptions;
}
/**
* Determine the current context if one was not already specified.
*
* If a context of type context_module is specified, it is immediately
* returned and not checked.
*
* @param int $forumid The ID of the forum
* @param context_module $context The current context.
* @return context_module The context determined
*/
function forum_get_context($forumid, $context = null) {
global $PAGE;
if (!$context || !($context instanceof context_module)) {
// Find out forum context. First try to take current page context to save on DB query.
if ($PAGE->cm && $PAGE->cm->modname === 'forum' && $PAGE->cm->instance == $forumid
&& $PAGE->context->contextlevel == CONTEXT_MODULE && $PAGE->context->instanceid == $PAGE->cm->id) {
$context = $PAGE->context;
} else {
$cm = get_coursemodule_from_instance('forum', $forumid);
$context = \context_module::instance($cm->id);
}
}
return $context;
}
/**
* Mark the activity completed (if required) and trigger the course_module_viewed event.
*
* @param stdClass $forum forum object
* @param stdClass $course course object
* @param stdClass $cm course module object
* @param stdClass $context context object
* @since Moodle 2.9
*/
function forum_view($forum, $course, $cm, $context) {
// Completion.
$completion = new completion_info($course);
$completion->set_module_viewed($cm);
// Trigger course_module_viewed event.
$params = array(
'context' => $context,
'objectid' => $forum->id
);
$event = \mod_forum\event\course_module_viewed::create($params);
$event->add_record_snapshot('course_modules', $cm);
$event->add_record_snapshot('course', $course);
$event->add_record_snapshot('forum', $forum);
$event->trigger();
}
/**
* Trigger the discussion viewed event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 2.9
*/
function forum_discussion_view($modcontext, $forum, $discussion) {
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
);
$event = \mod_forum\event\discussion_viewed::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->add_record_snapshot('forum', $forum);
$event->trigger();
}
/**
* Set the discussion to pinned and trigger the discussion pinned event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 3.1
*/
function forum_discussion_pin($modcontext, $forum, $discussion) {
global $DB;
$DB->set_field('forum_discussions', 'pinned', FORUM_DISCUSSION_PINNED, array('id' => $discussion->id));
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
'other' => array('forumid' => $forum->id)
);
$event = \mod_forum\event\discussion_pinned::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
}
/**
* Set discussion to unpinned and trigger the discussion unpin event
*
* @param stdClass $modcontext module context object
* @param stdClass $forum forum object
* @param stdClass $discussion discussion object
* @since Moodle 3.1
*/
function forum_discussion_unpin($modcontext, $forum, $discussion) {
global $DB;
$DB->set_field('forum_discussions', 'pinned', FORUM_DISCUSSION_UNPINNED, array('id' => $discussion->id));
$params = array(
'context' => $modcontext,
'objectid' => $discussion->id,
'other' => array('forumid' => $forum->id)
);
$event = \mod_forum\event\discussion_unpinned::create($params);
$event->add_record_snapshot('forum_discussions', $discussion);
$event->trigger();
}
/**
* Add nodes to myprofile page.
*
* @param \core_user\output\myprofile\tree $tree Tree object
* @param stdClass $user user object
* @param bool $iscurrentuser
* @param stdClass $course Course object
*
* @return bool
*/
function mod_forum_myprofile_navigation(core_user\output\myprofile\tree $tree, $user, $iscurrentuser, $course) {
if (isguestuser($user)) {
// The guest user cannot post, so it is not possible to view any posts.
// May as well just bail aggressively here.
return false;
}
$postsurl = new moodle_url('/mod/forum/user.php', array('id' => $user->id));
if (!empty($course)) {
$postsurl->param('course', $course->id);
}
$string = get_string('forumposts', 'mod_forum');
$node = new core_user\output\myprofile\node('miscellaneous', 'forumposts', $string, null, $postsurl);
$tree->add_node($node);
$discussionssurl = new moodle_url('/mod/forum/user.php', array('id' => $user->id, 'mode' => 'discussions'));
if (!empty($course)) {
$discussionssurl->param('course', $course->id);
}
$string = get_string('myprofileotherdis', 'mod_forum');
$node = new core_user\output\myprofile\node('miscellaneous', 'forumdiscussions', $string, null,
$discussionssurl);
$tree->add_node($node);
return true;
}
/**
* Checks whether the author's name and picture for a given post should be hidden or not.
*
* @param object $post The forum post.
* @param object $forum The forum object.
* @return bool
* @throws coding_exception
*/
function forum_is_author_hidden($post, $forum) {
if (!isset($post->parent)) {
throw new coding_exception('$post->parent must be set.');
}
if (!isset($forum->type)) {
throw new coding_exception('$forum->type must be set.');
}
if ($forum->type === 'single' && empty($post->parent)) {
return true;
}
return false;
}
/**
* Manage inplace editable saves.
*
* @param string $itemtype The type of item.
* @param int $itemid The ID of the item.
* @param mixed $newvalue The new value
* @return string
*/
function mod_forum_inplace_editable($itemtype, $itemid, $newvalue) {
global $DB, $PAGE;
if ($itemtype === 'digestoptions') {
// The itemid is the forumid.
$forum = $DB->get_record('forum', array('id' => $itemid), '*', MUST_EXIST);
$course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id, false, MUST_EXIST);
$context = context_module::instance($cm->id);
$PAGE->set_context($context);
require_login($course, false, $cm);
forum_set_user_maildigest($forum, $newvalue);
$renderer = $PAGE->get_renderer('mod_forum');
return $renderer->render_digest_options($forum, $newvalue);
}
}
/**
* Determine whether the specified discussion is time-locked.
*
* @param stdClass $forum The forum that the discussion belongs to
* @param stdClass $discussion The discussion to test
* @return bool
*/
function forum_discussion_is_locked($forum, $discussion) {
if (empty($forum->lockdiscussionafter)) {
return false;
}
if ($forum->type === 'single') {
// It does not make sense to lock a single discussion forum.
return false;
}
if (($discussion->timemodified + $forum->lockdiscussionafter) < time()) {
return true;
}
return false;
}
/**
* Check if the module has any update that affects the current user since a given time.
*
* @param cm_info $cm course module data
* @param int $from the time to check updates from
* @param array $filter if we need to check only specific updates
* @return stdClass an object with the different type of areas indicating if they were updated or not
* @since Moodle 3.2
*/
function forum_check_updates_since(cm_info $cm, $from, $filter = array()) {
$context = $cm->context;
$updates = new stdClass();
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return $updates;
}
$updates = course_check_module_updates_since($cm, $from, array(), $filter);
// Check if there are new discussions in the forum.
$updates->discussions = (object) array('updated' => false);
$discussions = forum_get_discussions($cm, '', false, -1, -1, true, -1, 0, FORUM_POSTS_ALL_USER_GROUPS, $from);
if (!empty($discussions)) {
$updates->discussions->updated = true;
$updates->discussions->itemids = array_keys($discussions);
}
return $updates;
}
/**
* Check if the user can create attachments in a forum.
* @param stdClass $forum forum object
* @param stdClass $context context object
* @return bool true if the user can create attachments, false otherwise
* @since Moodle 3.3
*/
function forum_can_create_attachment($forum, $context) {
// If maxbytes == 1 it means no attachments at all.
if (empty($forum->maxattachments) || $forum->maxbytes == 1 ||
!has_capability('mod/forum:createattachment', $context)) {
return false;
}
return true;
}
/**
* Get icon mapping for font-awesome.
*
* @return array
*/
function mod_forum_get_fontawesome_icon_map() {
return [
'mod_forum:i/pinned' => 'fa-map-pin',
'mod_forum:t/selected' => 'fa-check',
'mod_forum:t/subscribed' => 'fa-envelope-o',
'mod_forum:t/unsubscribed' => 'fa-envelope-open-o',
];
}
/**
* Callback function that determines whether an action event should be showing its item count
* based on the event type and the item count.
*
* @param calendar_event $event The calendar event.
* @param int $itemcount The item count associated with the action event.
* @return bool
*/
function mod_forum_core_calendar_event_action_shows_item_count(calendar_event $event, $itemcount = 0) {
// Always show item count for forums if item count is greater than 1.
// If only one action is required than it is obvious and we don't show it for other modules.
return $itemcount > 1;
}
/**
* This function receives a calendar event and returns the action associated with it, or null if there is none.
*
* This is used by block_myoverview in order to display the event appropriately. If null is returned then the event
* is not displayed on the block.
*
* @param calendar_event $event
* @param \core_calendar\action_factory $factory
* @return \core_calendar\local\event\entities\action_interface|null
*/
function mod_forum_core_calendar_provide_event_action(calendar_event $event,
\core_calendar\action_factory $factory) {
global $DB, $USER;
$cm = get_fast_modinfo($event->courseid)->instances['forum'][$event->instance];
$context = context_module::instance($cm->id);
if (!has_capability('mod/forum:viewdiscussion', $context)) {
return null;
}
$completion = new \completion_info($cm->get_course());
$completiondata = $completion->get_data($cm, false);
if ($completiondata->completionstate != COMPLETION_INCOMPLETE) {
return null;
}
// Get action itemcount.
$itemcount = 0;
$forum = $DB->get_record('forum', array('id' => $cm->instance));
$postcountsql = "
SELECT
COUNT(1)
FROM
{forum_posts} fp
INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
WHERE
fp.userid=:userid AND fd.forum=:forumid";
$postcountparams = array('userid' => $USER->id, 'forumid' => $forum->id);
if ($forum->completiondiscussions) {
$count = $DB->count_records('forum_discussions', array('forum' => $forum->id, 'userid' => $USER->id));
$itemcount += ($forum->completiondiscussions >= $count) ? ($forum->completiondiscussions - $count) : 0;
}
if ($forum->completionreplies) {
$count = $DB->get_field_sql( $postcountsql.' AND fp.parent<>0', $postcountparams);
$itemcount += ($forum->completionreplies >= $count) ? ($forum->completionreplies - $count) : 0;
}
if ($forum->completionposts) {
$count = $DB->get_field_sql($postcountsql, $postcountparams);
$itemcount += ($forum->completionposts >= $count) ? ($forum->completionposts - $count) : 0;
}
// Well there is always atleast one actionable item (view forum, etc).
$itemcount = $itemcount > 0 ? $itemcount : 1;
return $factory->create_instance(
get_string('view'),
new \moodle_url('/mod/forum/view.php', ['id' => $cm->id]),
$itemcount,
true
);
}
/**
* Add a get_coursemodule_info function in case any forum type wants to add 'extra' information
* for the course (see resource).
*
* Given a course_module object, this function returns any "extra" information that may be needed
* when printing this activity in a course listing. See get_array_of_activities() in course/lib.php.
*
* @param stdClass $coursemodule The coursemodule object (record).
* @return cached_cm_info An object on information that the courses
* will know about (most noticeably, an icon).
*/
function forum_get_coursemodule_info($coursemodule) {
global $DB;
$dbparams = ['id' => $coursemodule->instance];
$fields = 'id, name, intro, introformat, completionposts, completiondiscussions, completionreplies';
if (!$forum = $DB->get_record('forum', $dbparams, $fields)) {
return false;
}
$result = new cached_cm_info();
$result->name = $forum->name;
if ($coursemodule->showdescription) {
// Convert intro to html. Do not filter cached version, filters run at display time.
$result->content = format_module_intro('forum', $forum, $coursemodule->id, false);
}
// Populate the custom completion rules as key => value pairs, but only if the completion mode is 'automatic'.
if ($coursemodule->completion == COMPLETION_TRACKING_AUTOMATIC) {
$result->customdata['customcompletionrules']['completiondiscussions'] = $forum->completiondiscussions;
$result->customdata['customcompletionrules']['completionreplies'] = $forum->completionreplies;
$result->customdata['customcompletionrules']['completionposts'] = $forum->completionposts;
}
return $result;
}
/**
* Callback which returns human-readable strings describing the active completion custom rules for the module instance.
*
* @param cm_info|stdClass $cm object with fields ->completion and ->customdata['customcompletionrules']
* @return array $descriptions the array of descriptions for the custom rules.
*/
function mod_forum_get_completion_active_rule_descriptions($cm) {
// Values will be present in cm_info, and we assume these are up to date.
if (empty($cm->customdata['customcompletionrules'])
|| $cm->completion != COMPLETION_TRACKING_AUTOMATIC) {
return [];
}
$descriptions = [];
foreach ($cm->customdata['customcompletionrules'] as $key => $val) {
switch ($key) {
case 'completiondiscussions':
if (empty($val)) {
continue;
}
$descriptions[] = get_string('completiondiscussionsdesc', 'forum', $val);
break;
case 'completionreplies':
if (empty($val)) {
continue;
}
$descriptions[] = get_string('completionrepliesdesc', 'forum', $val);
break;
case 'completionposts':
if (empty($val)) {
continue;
}
$descriptions[] = get_string('completionpostsdesc', 'forum', $val);
break;
default:
break;
}
}
return $descriptions;
}