2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
19 * @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
20 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
23 defined('MOODLE_INTERNAL') || die();
25 /** Include required files */
26 require_once(__DIR__ . '/deprecatedlib.php');
27 require_once($CFG->libdir.'/filelib.php');
28 require_once($CFG->libdir.'/eventslib.php');
30 /// CONSTANTS ///////////////////////////////////////////////////////////
32 define('FORUM_MODE_FLATOLDEST', 1);
33 define('FORUM_MODE_FLATNEWEST', -1);
34 define('FORUM_MODE_THREADED', 2);
35 define('FORUM_MODE_NESTED', 3);
37 define('FORUM_CHOOSESUBSCRIBE', 0);
38 define('FORUM_FORCESUBSCRIBE', 1);
39 define('FORUM_INITIALSUBSCRIBE', 2);
40 define('FORUM_DISALLOWSUBSCRIBE',3);
43 * FORUM_TRACKING_OFF - Tracking is not available for this forum.
45 define('FORUM_TRACKING_OFF', 0);
48 * FORUM_TRACKING_OPTIONAL - Tracking is based on user preference.
50 define('FORUM_TRACKING_OPTIONAL', 1);
53 * FORUM_TRACKING_FORCED - Tracking is on, regardless of user setting.
54 * Treated as FORUM_TRACKING_OPTIONAL if $CFG->forum_allowforcedreadtracking is off.
56 define('FORUM_TRACKING_FORCED', 2);
58 define('FORUM_MAILED_PENDING', 0);
59 define('FORUM_MAILED_SUCCESS', 1);
60 define('FORUM_MAILED_ERROR', 2);
62 if (!defined('FORUM_CRON_USER_CACHE')) {
63 /** Defines how many full user records are cached in forum cron. */
64 define('FORUM_CRON_USER_CACHE', 5000);
68 * FORUM_POSTS_ALL_USER_GROUPS - All the posts in groups where the user is enrolled.
70 define('FORUM_POSTS_ALL_USER_GROUPS', -2);
72 define('FORUM_DISCUSSION_PINNED', 1);
73 define('FORUM_DISCUSSION_UNPINNED', 0);
75 /// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
78 * Given an object containing all the necessary data,
79 * (defined by the form in mod_form.php) this function
80 * will create a new instance and return the id number
81 * of the new instance.
83 * @param stdClass $forum add forum instance
84 * @param mod_forum_mod_form $mform
85 * @return int intance id
87 function forum_add_instance($forum, $mform = null) {
90 $forum->timemodified = time();
92 if (empty($forum->assessed)) {
96 if (empty($forum->ratingtime) or empty($forum->assessed)) {
97 $forum->assesstimestart = 0;
98 $forum->assesstimefinish = 0;
101 $forum->id = $DB->insert_record('forum', $forum);
102 $modcontext = context_module::instance($forum->coursemodule);
104 if ($forum->type == 'single') { // Create related discussion.
105 $discussion = new stdClass();
106 $discussion->course = $forum->course;
107 $discussion->forum = $forum->id;
108 $discussion->name = $forum->name;
109 $discussion->assessed = $forum->assessed;
110 $discussion->message = $forum->intro;
111 $discussion->messageformat = $forum->introformat;
112 $discussion->messagetrust = trusttext_trusted(context_course::instance($forum->course));
113 $discussion->mailnow = false;
114 $discussion->groupid = -1;
118 $discussion->id = forum_add_discussion($discussion, null, $message);
120 if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
121 // Ugly hack - we need to copy the files somehow.
122 $discussion = $DB->get_record('forum_discussions', array('id'=>$discussion->id), '*', MUST_EXIST);
123 $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
125 $options = array('subdirs'=>true); // Use the same options as intro field!
126 $post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
127 $DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
131 forum_grade_item_update($forum);
137 * Handle changes following the creation of a forum instance.
138 * This function is typically called by the course_module_created observer.
140 * @param object $context the forum context
141 * @param stdClass $forum The forum object
144 function forum_instance_created($context, $forum) {
145 if ($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) {
146 $users = \mod_forum\subscriptions::get_potential_subscribers($context, 0, 'u.id, u.email');
147 foreach ($users as $user) {
148 \mod_forum\subscriptions::subscribe_user($user->id, $forum, $context);
154 * Given an object containing all the necessary data,
155 * (defined by the form in mod_form.php) this function
156 * will update an existing instance with new data.
159 * @param object $forum forum instance (with magic quotes)
160 * @return bool success
162 function forum_update_instance($forum, $mform) {
163 global $DB, $OUTPUT, $USER;
165 $forum->timemodified = time();
166 $forum->id = $forum->instance;
168 if (empty($forum->assessed)) {
169 $forum->assessed = 0;
172 if (empty($forum->ratingtime) or empty($forum->assessed)) {
173 $forum->assesstimestart = 0;
174 $forum->assesstimefinish = 0;
177 $oldforum = $DB->get_record('forum', array('id'=>$forum->id));
179 // MDL-3942 - if the aggregation type or scale (i.e. max grade) changes then recalculate the grades for the entire forum
180 // if scale changes - do we need to recheck the ratings, if ratings higher than scale how do we want to respond?
181 // 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
182 if (($oldforum->assessed<>$forum->assessed) or ($oldforum->scale<>$forum->scale)) {
183 forum_update_grades($forum); // recalculate grades for the forum
186 if ($forum->type == 'single') { // Update related discussion and post.
187 $discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id), 'timemodified ASC');
188 if (!empty($discussions)) {
189 if (count($discussions) > 1) {
190 echo $OUTPUT->notification(get_string('warnformorepost', 'forum'));
192 $discussion = array_pop($discussions);
194 // try to recover by creating initial discussion - MDL-16262
195 $discussion = new stdClass();
196 $discussion->course = $forum->course;
197 $discussion->forum = $forum->id;
198 $discussion->name = $forum->name;
199 $discussion->assessed = $forum->assessed;
200 $discussion->message = $forum->intro;
201 $discussion->messageformat = $forum->introformat;
202 $discussion->messagetrust = true;
203 $discussion->mailnow = false;
204 $discussion->groupid = -1;
208 forum_add_discussion($discussion, null, $message);
210 if (! $discussion = $DB->get_record('forum_discussions', array('forum'=>$forum->id))) {
211 print_error('cannotadd', 'forum');
214 if (! $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost))) {
215 print_error('cannotfindfirstpost', 'forum');
218 $cm = get_coursemodule_from_instance('forum', $forum->id);
219 $modcontext = context_module::instance($cm->id, MUST_EXIST);
221 $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
222 $post->subject = $forum->name;
223 $post->message = $forum->intro;
224 $post->messageformat = $forum->introformat;
225 $post->messagetrust = trusttext_trusted($modcontext);
226 $post->modified = $forum->timemodified;
227 $post->userid = $USER->id; // MDL-18599, so that current teacher can take ownership of activities.
229 if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
230 // Ugly hack - we need to copy the files somehow.
231 $options = array('subdirs'=>true); // Use the same options as intro field!
232 $post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
235 $DB->update_record('forum_posts', $post);
236 $discussion->name = $forum->name;
237 $DB->update_record('forum_discussions', $discussion);
240 $DB->update_record('forum', $forum);
242 $modcontext = context_module::instance($forum->coursemodule);
243 if (($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) && ($oldforum->forcesubscribe <> $forum->forcesubscribe)) {
244 $users = \mod_forum\subscriptions::get_potential_subscribers($modcontext, 0, 'u.id, u.email', '');
245 foreach ($users as $user) {
246 \mod_forum\subscriptions::subscribe_user($user->id, $forum, $modcontext);
250 forum_grade_item_update($forum);
257 * Given an ID of an instance of this module,
258 * this function will permanently delete the instance
259 * and any data that depends on it.
262 * @param int $id forum instance id
263 * @return bool success
265 function forum_delete_instance($id) {
268 if (!$forum = $DB->get_record('forum', array('id'=>$id))) {
271 if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
274 if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
278 $context = context_module::instance($cm->id);
280 // now get rid of all files
281 $fs = get_file_storage();
282 $fs->delete_area_files($context->id);
286 // Delete digest and subscription preferences.
287 $DB->delete_records('forum_digests', array('forum' => $forum->id));
288 $DB->delete_records('forum_subscriptions', array('forum'=>$forum->id));
289 $DB->delete_records('forum_discussion_subs', array('forum' => $forum->id));
291 if ($discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id))) {
292 foreach ($discussions as $discussion) {
293 if (!forum_delete_discussion($discussion, true, $course, $cm, $forum)) {
299 forum_tp_delete_read_records(-1, -1, -1, $forum->id);
301 if (!$DB->delete_records('forum', array('id'=>$forum->id))) {
305 forum_grade_item_delete($forum);
312 * Indicates API features that the forum supports.
314 * @uses FEATURE_GROUPS
315 * @uses FEATURE_GROUPINGS
316 * @uses FEATURE_MOD_INTRO
317 * @uses FEATURE_COMPLETION_TRACKS_VIEWS
318 * @uses FEATURE_COMPLETION_HAS_RULES
319 * @uses FEATURE_GRADE_HAS_GRADE
320 * @uses FEATURE_GRADE_OUTCOMES
321 * @param string $feature
322 * @return mixed True if yes (some features may use other values)
324 function forum_supports($feature) {
326 case FEATURE_GROUPS: return true;
327 case FEATURE_GROUPINGS: return true;
328 case FEATURE_MOD_INTRO: return true;
329 case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
330 case FEATURE_COMPLETION_HAS_RULES: return true;
331 case FEATURE_GRADE_HAS_GRADE: return true;
332 case FEATURE_GRADE_OUTCOMES: return true;
333 case FEATURE_RATE: return true;
334 case FEATURE_BACKUP_MOODLE2: return true;
335 case FEATURE_SHOW_DESCRIPTION: return true;
336 case FEATURE_PLAGIARISM: return true;
338 default: return null;
344 * Obtains the automatic completion state for this forum based on any conditions
349 * @param object $course Course
350 * @param object $cm Course-module
351 * @param int $userid User ID
352 * @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
353 * @return bool True if completed, false if not. (If no conditions, then return
354 * value depends on comparison type)
356 function forum_get_completion_state($course,$cm,$userid,$type) {
360 if (!($forum=$DB->get_record('forum',array('id'=>$cm->instance)))) {
361 throw new Exception("Can't find forum {$cm->instance}");
364 $result=$type; // Default return value
366 $postcountparams=array('userid'=>$userid,'forumid'=>$forum->id);
372 INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
374 fp.userid=:userid AND fd.forum=:forumid";
376 if ($forum->completiondiscussions) {
377 $value = $forum->completiondiscussions <=
378 $DB->count_records('forum_discussions',array('forum'=>$forum->id,'userid'=>$userid));
379 if ($type == COMPLETION_AND) {
380 $result = $result && $value;
382 $result = $result || $value;
385 if ($forum->completionreplies) {
386 $value = $forum->completionreplies <=
387 $DB->get_field_sql( $postcountsql.' AND fp.parent<>0',$postcountparams);
388 if ($type==COMPLETION_AND) {
389 $result = $result && $value;
391 $result = $result || $value;
394 if ($forum->completionposts) {
395 $value = $forum->completionposts <= $DB->get_field_sql($postcountsql,$postcountparams);
396 if ($type == COMPLETION_AND) {
397 $result = $result && $value;
399 $result = $result || $value;
407 * Create a message-id string to use in the custom headers of forum notification emails
409 * message-id is used by email clients to identify emails and to nest conversations
411 * @param int $postid The ID of the forum post we are notifying the user about
412 * @param int $usertoid The ID of the user being notified
413 * @return string A unique message-id
415 function forum_get_email_message_id($postid, $usertoid) {
416 return generate_email_messageid(hash('sha256', $postid . 'to' . $usertoid));
420 * Removes properties from user record that are not necessary
421 * for sending post notifications.
422 * @param stdClass $user
423 * @return void, $user parameter is modified
425 function forum_cron_minimise_user_record(stdClass $user) {
427 // We store large amount of users in one huge array,
428 // make sure we do not store info there we do not actually need
429 // in mail generation code or messaging.
431 unset($user->institution);
432 unset($user->department);
433 unset($user->address);
436 unset($user->currentlogin);
437 unset($user->description);
438 unset($user->descriptionformat);
442 * Function to be run periodically according to the scheduled task.
444 * Finds all posts that have yet to be mailed out, and mails them
445 * out to all subscribers as well as other maintance tasks.
447 * NOTE: Since 2.7.2 this function is run by scheduled task rather
448 * than standard cron.
450 * @todo MDL-44734 The function will be split up into seperate tasks.
452 function forum_cron() {
453 global $CFG, $USER, $DB, $PAGE;
457 // The main renderers.
458 $htmlout = $PAGE->get_renderer('mod_forum', 'email', 'htmlemail');
459 $textout = $PAGE->get_renderer('mod_forum', 'email', 'textemail');
460 $htmldigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'htmlemail');
461 $textdigestfullout = $PAGE->get_renderer('mod_forum', 'emaildigestfull', 'textemail');
462 $htmldigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'htmlemail');
463 $textdigestbasicout = $PAGE->get_renderer('mod_forum', 'emaildigestbasic', 'textemail');
465 // All users that are subscribed to any post that needs sending,
466 // please increase $CFG->extramemorylimit on large sites that
467 // send notifications to a large number of users.
469 $userscount = 0; // Cached user counter - count($users) in PHP is horribly slow!!!
472 $mailcount = array();
473 $errorcount = array();
476 $discussions = array();
479 $coursemodules = array();
480 $subscribedusers = array();
481 $messageinboundhandlers = array();
483 // Posts older than 2 days will not be mailed. This is to avoid the problem where
484 // cron has not been running for a long time, and then suddenly people are flooded
485 // with mail from the past few weeks or months
487 $endtime = $timenow - $CFG->maxeditingtime;
488 $starttime = $endtime - 48 * 3600; // Two days earlier
490 // Get the list of forum subscriptions for per-user per-forum maildigest settings.
491 $digestsset = $DB->get_recordset('forum_digests', null, '', 'id, userid, forum, maildigest');
493 foreach ($digestsset as $thisrow) {
494 if (!isset($digests[$thisrow->forum])) {
495 $digests[$thisrow->forum] = array();
497 $digests[$thisrow->forum][$thisrow->userid] = $thisrow->maildigest;
499 $digestsset->close();
501 // Create the generic messageinboundgenerator.
502 $messageinboundgenerator = new \core\message\inbound\address_manager();
503 $messageinboundgenerator->set_handler('\mod_forum\message\inbound\reply_handler');
505 if ($posts = forum_get_unmailed_posts($starttime, $endtime, $timenow)) {
506 // Mark them all now as being mailed. It's unlikely but possible there
507 // might be an error later so that a post is NOT actually mailed out,
508 // but since mail isn't crucial, we can accept this risk. Doing it now
509 // prevents the risk of duplicated mails, which is a worse problem.
511 if (!forum_mark_old_posts_as_mailed($endtime)) {
512 mtrace('Errors occurred while trying to mark some posts as being mailed.');
513 return false; // Don't continue trying to mail them, in case we are in a cron loop
516 // checking post validity, and adding users to loop through later
517 foreach ($posts as $pid => $post) {
519 $discussionid = $post->discussion;
520 if (!isset($discussions[$discussionid])) {
521 if ($discussion = $DB->get_record('forum_discussions', array('id'=> $post->discussion))) {
522 $discussions[$discussionid] = $discussion;
523 \mod_forum\subscriptions::fill_subscription_cache($discussion->forum);
524 \mod_forum\subscriptions::fill_discussion_subscription_cache($discussion->forum);
527 mtrace('Could not find discussion ' . $discussionid);
532 $forumid = $discussions[$discussionid]->forum;
533 if (!isset($forums[$forumid])) {
534 if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
535 $forums[$forumid] = $forum;
537 mtrace('Could not find forum '.$forumid);
542 $courseid = $forums[$forumid]->course;
543 if (!isset($courses[$courseid])) {
544 if ($course = $DB->get_record('course', array('id' => $courseid))) {
545 $courses[$courseid] = $course;
547 mtrace('Could not find course '.$courseid);
552 if (!isset($coursemodules[$forumid])) {
553 if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
554 $coursemodules[$forumid] = $cm;
556 mtrace('Could not find course module for forum '.$forumid);
562 // Save the Inbound Message datakey here to reduce DB queries later.
563 $messageinboundgenerator->set_data($pid);
564 $messageinboundhandlers[$pid] = $messageinboundgenerator->fetch_data_key();
566 // Caching subscribed users of each forum.
567 if (!isset($subscribedusers[$forumid])) {
568 $modcontext = context_module::instance($coursemodules[$forumid]->id);
569 if ($subusers = \mod_forum\subscriptions::fetch_subscribed_users($forums[$forumid], 0, $modcontext, 'u.*', true)) {
571 foreach ($subusers as $postuser) {
572 // this user is subscribed to this forum
573 $subscribedusers[$forumid][$postuser->id] = $postuser->id;
575 if ($userscount > FORUM_CRON_USER_CACHE) {
576 // Store minimal user info.
577 $minuser = new stdClass();
578 $minuser->id = $postuser->id;
579 $users[$postuser->id] = $minuser;
581 // Cache full user record.
582 forum_cron_minimise_user_record($postuser);
583 $users[$postuser->id] = $postuser;
591 $mailcount[$pid] = 0;
592 $errorcount[$pid] = 0;
596 if ($users && $posts) {
598 foreach ($users as $userto) {
599 // Terminate if processing of any account takes longer than 2 minutes.
600 core_php_time_limit::raise(120);
602 mtrace('Processing user ' . $userto->id);
604 // Init user caches - we keep the cache for one cycle only, otherwise it could consume too much memory.
605 if (isset($userto->username)) {
606 $userto = clone($userto);
608 $userto = $DB->get_record('user', array('id' => $userto->id));
609 forum_cron_minimise_user_record($userto);
611 $userto->viewfullnames = array();
612 $userto->canpost = array();
613 $userto->markposts = array();
615 // Setup this user so that the capabilities are cached, and environment matches receiving user.
616 cron_setup_user($userto);
619 foreach ($coursemodules as $forumid => $unused) {
620 $coursemodules[$forumid]->cache = new stdClass();
621 $coursemodules[$forumid]->cache->caps = array();
622 unset($coursemodules[$forumid]->uservisible);
625 foreach ($posts as $pid => $post) {
626 $discussion = $discussions[$post->discussion];
627 $forum = $forums[$discussion->forum];
628 $course = $courses[$forum->course];
629 $cm =& $coursemodules[$forum->id];
631 // Do some checks to see if we can bail out now.
633 // Only active enrolled users are in the list of subscribers.
634 // This does not necessarily mean that the user is subscribed to the forum or to the discussion though.
635 if (!isset($subscribedusers[$forum->id][$userto->id])) {
636 // The user does not subscribe to this forum.
640 if (!\mod_forum\subscriptions::is_subscribed($userto->id, $forum, $post->discussion, $coursemodules[$forum->id])) {
641 // The user does not subscribe to this forum, or to this specific discussion.
645 if ($subscriptiontime = \mod_forum\subscriptions::fetch_discussion_subscription($forum->id, $userto->id)) {
646 // Skip posts if the user subscribed to the discussion after it was created.
647 if (isset($subscriptiontime[$post->discussion]) && ($subscriptiontime[$post->discussion] > $post->created)) {
652 // Don't send email if the forum is Q&A and the user has not posted.
653 // Initial topics are still mailed.
654 if ($forum->type == 'qanda' && !forum_get_user_posted_time($discussion->id, $userto->id) && $pid != $discussion->firstpost) {
655 mtrace('Did not email ' . $userto->id.' because user has not posted in discussion');
659 // Get info about the sending user.
660 if (array_key_exists($post->userid, $users)) {
661 // We might know the user already.
662 $userfrom = $users[$post->userid];
663 if (!isset($userfrom->idnumber)) {
664 // Minimalised user info, fetch full record.
665 $userfrom = $DB->get_record('user', array('id' => $userfrom->id));
666 forum_cron_minimise_user_record($userfrom);
669 } else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
670 forum_cron_minimise_user_record($userfrom);
671 // Fetch only once if possible, we can add it to user list, it will be skipped anyway.
672 if ($userscount <= FORUM_CRON_USER_CACHE) {
674 $users[$userfrom->id] = $userfrom;
677 mtrace('Could not find user ' . $post->userid . ', author of post ' . $post->id . '. Unable to send message.');
681 // Note: If we want to check that userto and userfrom are not the same person this is probably the spot to do it.
683 // Setup global $COURSE properly - needed for roles and languages.
684 cron_setup_user($userto, $course);
687 if (!isset($userto->viewfullnames[$forum->id])) {
688 $modcontext = context_module::instance($cm->id);
689 $userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
691 if (!isset($userto->canpost[$discussion->id])) {
692 $modcontext = context_module::instance($cm->id);
693 $userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
695 if (!isset($userfrom->groups[$forum->id])) {
696 if (!isset($userfrom->groups)) {
697 $userfrom->groups = array();
698 if (isset($users[$userfrom->id])) {
699 $users[$userfrom->id]->groups = array();
702 $userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
703 if (isset($users[$userfrom->id])) {
704 $users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
708 // Make sure groups allow this user to see this email.
709 if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) {
710 // Groups are being used.
711 if (!groups_group_exists($discussion->groupid)) {
712 // Can't find group - be safe and don't this message.
716 if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $modcontext)) {
717 // Do not send posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS.
722 // Make sure we're allowed to see the post.
723 if (!forum_user_can_see_post($forum, $discussion, $post, null, $cm)) {
724 mtrace('User ' . $userto->id .' can not see ' . $post->id . '. Not sending message.');
728 // OK so we need to send the email.
730 // Does the user want this post in a digest? If so postpone it for now.
731 $maildigest = forum_get_user_maildigest_bulk($digests, $userto, $forum->id);
733 if ($maildigest > 0) {
734 // This user wants the mails to be in digest form.
735 $queue = new stdClass();
736 $queue->userid = $userto->id;
737 $queue->discussionid = $discussion->id;
738 $queue->postid = $post->id;
739 $queue->timemodified = $post->created;
740 $DB->insert_record('forum_queue', $queue);
744 // Prepare to actually send the post now, and build up the content.
746 $cleanforumname = str_replace('"', "'", strip_tags(format_string($forum->name)));
748 $userfrom->customheaders = array (
749 // Headers to make emails easier to track.
750 'List-Id: "' . $cleanforumname . '" ' . generate_email_messageid('moodleforum' . $forum->id),
751 'List-Help: ' . $CFG->wwwroot . '/mod/forum/view.php?f=' . $forum->id,
752 'Message-ID: ' . forum_get_email_message_id($post->id, $userto->id),
753 'X-Course-Id: ' . $course->id,
754 'X-Course-Name: ' . format_string($course->fullname, true),
756 // Headers to help prevent auto-responders.
758 'X-Auto-Response-Suppress: All',
759 'Auto-Submitted: auto-generated',
762 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
764 // Generate a reply-to address from using the Inbound Message handler.
765 $replyaddress = null;
766 if ($userto->canpost[$discussion->id] && array_key_exists($post->id, $messageinboundhandlers)) {
767 $messageinboundgenerator->set_data($post->id, $messageinboundhandlers[$post->id]);
768 $replyaddress = $messageinboundgenerator->generate($userto->id);
771 if (!isset($userto->canpost[$discussion->id])) {
772 $canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
774 $canreply = $userto->canpost[$discussion->id];
777 $data = new \mod_forum\output\forum_post_email(
788 $userfrom->customheaders[] = sprintf('List-Unsubscribe: <%s>',
789 $data->get_unsubscribediscussionlink());
791 if (!isset($userto->viewfullnames[$forum->id])) {
792 $data->viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
794 $data->viewfullnames = $userto->viewfullnames[$forum->id];
797 // Not all of these variables are used in the default language
798 // string but are made available to support custom subjects.
800 $a->subject = $data->get_subject();
801 $a->forumname = $cleanforumname;
802 $a->sitefullname = format_string($site->fullname);
803 $a->siteshortname = format_string($site->shortname);
804 $a->courseidnumber = $data->get_courseidnumber();
805 $a->coursefullname = $data->get_coursefullname();
806 $a->courseshortname = $data->get_coursename();
807 $postsubject = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
809 $rootid = forum_get_email_message_id($discussion->firstpost, $userto->id);
812 // This post is a reply, so add reply header (RFC 2822).
813 $parentid = forum_get_email_message_id($post->parent, $userto->id);
814 $userfrom->customheaders[] = "In-Reply-To: $parentid";
816 // If the post is deeply nested we also reference the parent message id and
817 // the root message id (if different) to aid threading when parts of the email
818 // conversation have been deleted (RFC1036).
819 if ($post->parent != $discussion->firstpost) {
820 $userfrom->customheaders[] = "References: $rootid $parentid";
822 $userfrom->customheaders[] = "References: $parentid";
826 // MS Outlook / Office uses poorly documented and non standard headers, including
827 // Thread-Topic which overrides the Subject and shouldn't contain Re: or Fwd: etc.
828 $a->subject = $discussion->name;
829 $threadtopic = html_to_text(get_string('postmailsubject', 'forum', $a), 0);
830 $userfrom->customheaders[] = "Thread-Topic: $threadtopic";
831 $userfrom->customheaders[] = "Thread-Index: " . substr($rootid, 1, 28);
833 // Send the post now!
834 mtrace('Sending ', '');
836 $eventdata = new \core\message\message();
837 $eventdata->component = 'mod_forum';
838 $eventdata->name = 'posts';
839 $eventdata->userfrom = $userfrom;
840 $eventdata->userto = $userto;
841 $eventdata->subject = $postsubject;
842 $eventdata->fullmessage = $textout->render($data);
843 $eventdata->fullmessageformat = FORMAT_PLAIN;
844 $eventdata->fullmessagehtml = $htmlout->render($data);
845 $eventdata->notification = 1;
846 $eventdata->replyto = $replyaddress;
847 if (!empty($replyaddress)) {
848 // Add extra text to email messages if they can reply back.
849 $textfooter = "\n\n" . get_string('replytopostbyemail', 'mod_forum');
850 $htmlfooter = html_writer::tag('p', get_string('replytopostbyemail', 'mod_forum'));
851 $additionalcontent = array('fullmessage' => array('footer' => $textfooter),
852 'fullmessagehtml' => array('footer' => $htmlfooter));
853 $eventdata->set_additional_content('email', $additionalcontent);
856 // If forum_replytouser is not set then send mail using the noreplyaddress.
857 if (empty($CFG->forum_replytouser)) {
858 $eventdata->userfrom = core_user::get_noreply_user();
861 $smallmessagestrings = new stdClass();
862 $smallmessagestrings->user = fullname($userfrom);
863 $smallmessagestrings->forumname = "$shortname: " . format_string($forum->name, true) . ": " . $discussion->name;
864 $smallmessagestrings->message = $post->message;
866 // Make sure strings are in message recipients language.
867 $eventdata->smallmessage = get_string_manager()->get_string('smallmessage', 'forum', $smallmessagestrings, $userto->lang);
869 $contexturl = new moodle_url('/mod/forum/discuss.php', array('d' => $discussion->id), 'p' . $post->id);
870 $eventdata->contexturl = $contexturl->out();
871 $eventdata->contexturlname = $discussion->name;
873 $mailresult = message_send($eventdata);
875 mtrace("Error: mod/forum/lib.php forum_cron(): Could not send out mail for id $post->id to user $userto->id".
876 " ($userto->email) .. not trying again.");
877 $errorcount[$post->id]++;
879 $mailcount[$post->id]++;
881 // Mark post as read if forum_usermarksread is set off.
882 if (!$CFG->forum_usermarksread) {
883 $userto->markposts[$post->id] = $post->id;
887 mtrace('post ' . $post->id . ': ' . $post->subject);
890 // Mark processed posts as read.
891 forum_tp_mark_posts_read($userto, $userto->markposts);
897 foreach ($posts as $post) {
898 mtrace($mailcount[$post->id]." users were sent post $post->id, '$post->subject'");
899 if ($errorcount[$post->id]) {
900 $DB->set_field('forum_posts', 'mailed', FORUM_MAILED_ERROR, array('id' => $post->id));
905 // release some memory
906 unset($subscribedusers);
912 $sitetimezone = core_date::get_server_timezone();
914 // Now see if there are any digest mails waiting to be sent, and if we should send them
916 mtrace('Starting digest processing...');
918 core_php_time_limit::raise(300); // terminate if not able to fetch all digests in 5 minutes
920 if (!isset($CFG->digestmailtimelast)) { // To catch the first time
921 set_config('digestmailtimelast', 0);
925 $digesttime = usergetmidnight($timenow, $sitetimezone) + ($CFG->digestmailtime * 3600);
927 // Delete any really old ones (normally there shouldn't be any)
928 $weekago = $timenow - (7 * 24 * 3600);
929 $DB->delete_records_select('forum_queue', "timemodified < ?", array($weekago));
930 mtrace ('Cleaned old digest records');
932 if ($CFG->digestmailtimelast < $digesttime and $timenow > $digesttime) {
934 mtrace('Sending forum digests: '.userdate($timenow, '', $sitetimezone));
936 $digestposts_rs = $DB->get_recordset_select('forum_queue', "timemodified < ?", array($digesttime));
938 if ($digestposts_rs->valid()) {
940 // We have work to do
943 //caches - reuse the those filled before too
944 $discussionposts = array();
945 $userdiscussions = array();
947 foreach ($digestposts_rs as $digestpost) {
948 if (!isset($posts[$digestpost->postid])) {
949 if ($post = $DB->get_record('forum_posts', array('id' => $digestpost->postid))) {
950 $posts[$digestpost->postid] = $post;
955 $discussionid = $digestpost->discussionid;
956 if (!isset($discussions[$discussionid])) {
957 if ($discussion = $DB->get_record('forum_discussions', array('id' => $discussionid))) {
958 $discussions[$discussionid] = $discussion;
963 $forumid = $discussions[$discussionid]->forum;
964 if (!isset($forums[$forumid])) {
965 if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
966 $forums[$forumid] = $forum;
972 $courseid = $forums[$forumid]->course;
973 if (!isset($courses[$courseid])) {
974 if ($course = $DB->get_record('course', array('id' => $courseid))) {
975 $courses[$courseid] = $course;
981 if (!isset($coursemodules[$forumid])) {
982 if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
983 $coursemodules[$forumid] = $cm;
988 $userdiscussions[$digestpost->userid][$digestpost->discussionid] = $digestpost->discussionid;
989 $discussionposts[$digestpost->discussionid][$digestpost->postid] = $digestpost->postid;
991 $digestposts_rs->close(); /// Finished iteration, let's close the resultset
993 // Data collected, start sending out emails to each user
994 foreach ($userdiscussions as $userid => $thesediscussions) {
996 core_php_time_limit::raise(120); // terminate if processing of any account takes longer than 2 minutes
1000 mtrace(get_string('processingdigest', 'forum', $userid), '... ');
1002 // First of all delete all the queue entries for this user
1003 $DB->delete_records_select('forum_queue', "userid = ? AND timemodified < ?", array($userid, $digesttime));
1005 // Init user caches - we keep the cache for one cycle only,
1006 // otherwise it would unnecessarily consume memory.
1007 if (array_key_exists($userid, $users) and isset($users[$userid]->username)) {
1008 $userto = clone($users[$userid]);
1010 $userto = $DB->get_record('user', array('id' => $userid));
1011 forum_cron_minimise_user_record($userto);
1013 $userto->viewfullnames = array();
1014 $userto->canpost = array();
1015 $userto->markposts = array();
1017 // Override the language and timezone of the "current" user, so that
1018 // mail is customised for the receiver.
1019 cron_setup_user($userto);
1021 $postsubject = get_string('digestmailsubject', 'forum', format_string($site->shortname, true));
1023 $headerdata = new stdClass();
1024 $headerdata->sitename = format_string($site->fullname, true);
1025 $headerdata->userprefs = $CFG->wwwroot.'/user/edit.php?id='.$userid.'&course='.$site->id;
1027 $posttext = get_string('digestmailheader', 'forum', $headerdata)."\n\n";
1028 $headerdata->userprefs = '<a target="_blank" href="'.$headerdata->userprefs.'">'.get_string('digestmailprefs', 'forum').'</a>';
1030 $posthtml = '<p>'.get_string('digestmailheader', 'forum', $headerdata).'</p>'
1031 . '<br /><hr size="1" noshade="noshade" />';
1033 foreach ($thesediscussions as $discussionid) {
1035 core_php_time_limit::raise(120); // to be reset for each post
1037 $discussion = $discussions[$discussionid];
1038 $forum = $forums[$discussion->forum];
1039 $course = $courses[$forum->course];
1040 $cm = $coursemodules[$forum->id];
1043 cron_setup_user($userto, $course);
1046 if (!isset($userto->viewfullnames[$forum->id])) {
1047 $modcontext = context_module::instance($cm->id);
1048 $userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
1050 if (!isset($userto->canpost[$discussion->id])) {
1051 $modcontext = context_module::instance($cm->id);
1052 $userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
1055 $strforums = get_string('forums', 'forum');
1056 $canunsubscribe = ! \mod_forum\subscriptions::is_forcesubscribed($forum);
1057 $canreply = $userto->canpost[$discussion->id];
1058 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
1060 $posttext .= "\n \n";
1061 $posttext .= '=====================================================================';
1062 $posttext .= "\n \n";
1063 $posttext .= "$shortname -> $strforums -> ".format_string($forum->name,true);
1064 if ($discussion->name != $forum->name) {
1065 $posttext .= " -> ".format_string($discussion->name,true);
1068 $posttext .= $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
1071 $posthtml .= "<p><font face=\"sans-serif\">".
1072 "<a target=\"_blank\" href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$shortname</a> -> ".
1073 "<a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/index.php?id=$course->id\">$strforums</a> -> ".
1074 "<a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
1075 if ($discussion->name == $forum->name) {
1076 $posthtml .= "</font></p>";
1078 $posthtml .= " -> <a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/discuss.php?d=$discussion->id\">".format_string($discussion->name,true)."</a></font></p>";
1082 $postsarray = $discussionposts[$discussionid];
1086 foreach ($postsarray as $postid) {
1087 $post = $posts[$postid];
1089 if (array_key_exists($post->userid, $users)) { // we might know him/her already
1090 $userfrom = $users[$post->userid];
1091 if (!isset($userfrom->idnumber)) {
1092 $userfrom = $DB->get_record('user', array('id' => $userfrom->id));
1093 forum_cron_minimise_user_record($userfrom);
1096 } else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
1097 forum_cron_minimise_user_record($userfrom);
1098 if ($userscount <= FORUM_CRON_USER_CACHE) {
1100 $users[$userfrom->id] = $userfrom;
1104 mtrace('Could not find user '.$post->userid);
1108 if (!isset($userfrom->groups[$forum->id])) {
1109 if (!isset($userfrom->groups)) {
1110 $userfrom->groups = array();
1111 if (isset($users[$userfrom->id])) {
1112 $users[$userfrom->id]->groups = array();
1115 $userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
1116 if (isset($users[$userfrom->id])) {
1117 $users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
1121 // Headers to help prevent auto-responders.
1122 $userfrom->customheaders = array(
1124 'X-Auto-Response-Suppress: All',
1125 'Auto-Submitted: auto-generated',
1128 $maildigest = forum_get_user_maildigest_bulk($digests, $userto, $forum->id);
1129 if (!isset($userto->canpost[$discussion->id])) {
1130 $canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
1132 $canreply = $userto->canpost[$discussion->id];
1135 $data = new \mod_forum\output\forum_post_email(
1146 if (!isset($userto->viewfullnames[$forum->id])) {
1147 $data->viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
1149 $data->viewfullnames = $userto->viewfullnames[$forum->id];
1152 if ($maildigest == 2) {
1153 // Subjects and link only.
1154 $posttext .= $textdigestbasicout->render($data);
1155 $posthtml .= $htmldigestbasicout->render($data);
1157 // The full treatment.
1158 $posttext .= $textdigestfullout->render($data);
1159 $posthtml .= $htmldigestfullout->render($data);
1161 // Create an array of postid's for this user to mark as read.
1162 if (!$CFG->forum_usermarksread) {
1163 $userto->markposts[$post->id] = $post->id;
1168 $footerlinks = array();
1169 if ($canunsubscribe) {
1170 $footerlinks[] = "<a href=\"$CFG->wwwroot/mod/forum/subscribe.php?id=$forum->id\">" . get_string("unsubscribe", "forum") . "</a>";
1172 $footerlinks[] = get_string("everyoneissubscribed", "forum");
1174 $footerlinks[] = "<a href='{$CFG->wwwroot}/mod/forum/index.php?id={$forum->course}'>" . get_string("digestmailpost", "forum") . '</a>';
1175 $posthtml .= "\n<div class='mdl-right'><font size=\"1\">" . implode(' ', $footerlinks) . '</font></div>';
1176 $posthtml .= '<hr size="1" noshade="noshade" /></p>';
1179 if (empty($userto->mailformat) || $userto->mailformat != 1) {
1180 // This user DOESN'T want to receive HTML
1184 $eventdata = new \core\message\message();
1185 $eventdata->component = 'mod_forum';
1186 $eventdata->name = 'digests';
1187 $eventdata->userfrom = core_user::get_noreply_user();
1188 $eventdata->userto = $userto;
1189 $eventdata->subject = $postsubject;
1190 $eventdata->fullmessage = $posttext;
1191 $eventdata->fullmessageformat = FORMAT_PLAIN;
1192 $eventdata->fullmessagehtml = $posthtml;
1193 $eventdata->notification = 1;
1194 $eventdata->smallmessage = get_string('smallmessagedigest', 'forum', $sentcount);
1195 $mailresult = message_send($eventdata);
1198 mtrace("ERROR: mod/forum/cron.php: Could not send out digest mail to user $userto->id ".
1199 "($userto->email)... not trying again.");
1204 // Mark post as read if forum_usermarksread is set off
1205 forum_tp_mark_posts_read($userto, $userto->markposts);
1209 /// We have finishied all digest emails, update $CFG->digestmailtimelast
1210 set_config('digestmailtimelast', $timenow);
1215 if (!empty($usermailcount)) {
1216 mtrace(get_string('digestsentusers', 'forum', $usermailcount));
1219 if (!empty($CFG->forum_lastreadclean)) {
1221 if ($CFG->forum_lastreadclean + (24*3600) < $timenow) {
1222 set_config('forum_lastreadclean', $timenow);
1223 mtrace('Removing old forum read tracking info...');
1224 forum_tp_clean_read_records();
1227 set_config('forum_lastreadclean', time());
1235 * @param object $course
1236 * @param object $user
1237 * @param object $mod TODO this is not used in this function, refactor
1238 * @param object $forum
1239 * @return object A standard object with 2 variables: info (number of posts for this user) and time (last modified)
1241 function forum_user_outline($course, $user, $mod, $forum) {
1243 require_once("$CFG->libdir/gradelib.php");
1244 $grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
1245 if (empty($grades->items[0]->grades)) {
1248 $grade = reset($grades->items[0]->grades);
1251 $count = forum_count_user_posts($forum->id, $user->id);
1253 if ($count && $count->postcount > 0) {
1254 $result = new stdClass();
1255 $result->info = get_string("numposts", "forum", $count->postcount);
1256 $result->time = $count->lastpost;
1258 $result->info .= ', ' . get_string('grade') . ': ' . $grade->str_long_grade;
1261 } else if ($grade) {
1262 $result = new stdClass();
1263 $result->info = get_string('grade') . ': ' . $grade->str_long_grade;
1265 //datesubmitted == time created. dategraded == time modified or time overridden
1266 //if grade was last modified by the user themselves use date graded. Otherwise use date submitted
1267 //TODO: move this copied & pasted code somewhere in the grades API. See MDL-26704
1268 if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
1269 $result->time = $grade->dategraded;
1271 $result->time = $grade->datesubmitted;
1283 * @param object $coure
1284 * @param object $user
1285 * @param object $mod
1286 * @param object $forum
1288 function forum_user_complete($course, $user, $mod, $forum) {
1289 global $CFG,$USER, $OUTPUT;
1290 require_once("$CFG->libdir/gradelib.php");
1292 $grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
1293 if (!empty($grades->items[0]->grades)) {
1294 $grade = reset($grades->items[0]->grades);
1295 echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
1296 if ($grade->str_feedback) {
1297 echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
1301 if ($posts = forum_get_user_posts($forum->id, $user->id)) {
1303 if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
1304 print_error('invalidcoursemodule');
1306 $discussions = forum_get_user_involved_discussions($forum->id, $user->id);
1308 foreach ($posts as $post) {
1309 if (!isset($discussions[$post->discussion])) {
1312 $discussion = $discussions[$post->discussion];
1314 forum_print_post($post, $discussion, $forum, $cm, $course, false, false, false);
1317 echo "<p>".get_string("noposts", "forum")."</p>";
1322 * Filters the forum discussions according to groups membership and config.
1324 * @since Moodle 2.8, 2.7.1, 2.6.4
1325 * @param array $discussions Discussions with new posts array
1326 * @return array Forums with the number of new posts
1328 function forum_filter_user_groups_discussions($discussions) {
1330 // Group the remaining discussions posts by their forumid.
1331 $filteredforums = array();
1333 // Discard not visible groups.
1334 foreach ($discussions as $discussion) {
1336 // Course data is already cached.
1337 $instances = get_fast_modinfo($discussion->course)->get_instances();
1338 $forum = $instances['forum'][$discussion->forum];
1340 // Continue if the user should not see this discussion.
1341 if (!forum_is_user_group_discussion($forum, $discussion->groupid)) {
1345 // Grouping results by forum.
1346 if (empty($filteredforums[$forum->instance])) {
1347 $filteredforums[$forum->instance] = new stdClass();
1348 $filteredforums[$forum->instance]->id = $forum->id;
1349 $filteredforums[$forum->instance]->count = 0;
1351 $filteredforums[$forum->instance]->count += $discussion->count;
1355 return $filteredforums;
1359 * Returns whether the discussion group is visible by the current user or not.
1361 * @since Moodle 2.8, 2.7.1, 2.6.4
1362 * @param cm_info $cm The discussion course module
1363 * @param int $discussiongroupid The discussion groupid
1366 function forum_is_user_group_discussion(cm_info $cm, $discussiongroupid) {
1368 if ($discussiongroupid == -1 || $cm->effectivegroupmode != SEPARATEGROUPS) {
1372 if (isguestuser()) {
1376 if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id)) ||
1377 in_array($discussiongroupid, $cm->get_modinfo()->get_groups($cm->groupingid))) {
1388 * @param array $courses
1389 * @param array $htmlarray
1391 function forum_print_overview($courses,&$htmlarray) {
1392 global $USER, $CFG, $DB, $SESSION;
1394 if (empty($courses) || !is_array($courses) || count($courses) == 0) {
1398 if (!$forums = get_all_instances_in_courses('forum',$courses)) {
1402 // Courses to search for new posts
1403 $coursessqls = array();
1405 foreach ($courses as $course) {
1407 // If the user has never entered into the course all posts are pending
1408 if ($course->lastaccess == 0) {
1409 $coursessqls[] = '(d.course = ?)';
1410 $params[] = $course->id;
1412 // Only posts created after the course last access
1414 $coursessqls[] = '(d.course = ? AND p.created > ?)';
1415 $params[] = $course->id;
1416 $params[] = $course->lastaccess;
1419 $params[] = $USER->id;
1420 $coursessql = implode(' OR ', $coursessqls);
1422 $sql = "SELECT d.id, d.forum, d.course, d.groupid, COUNT(*) as count "
1423 .'FROM {forum_discussions} d '
1424 .'JOIN {forum_posts} p ON p.discussion = d.id '
1425 ."WHERE ($coursessql) "
1426 .'AND p.userid != ? '
1427 .'AND (d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?)) '
1428 .'GROUP BY d.id, d.forum, d.course, d.groupid '
1429 .'ORDER BY d.course, d.forum';
1434 if (!$discussions = $DB->get_records_sql($sql, $params)) {
1435 $discussions = array();
1438 $forumsnewposts = forum_filter_user_groups_discussions($discussions);
1440 // also get all forum tracking stuff ONCE.
1441 $trackingforums = array();
1442 foreach ($forums as $forum) {
1443 if (forum_tp_can_track_forums($forum)) {
1444 $trackingforums[$forum->id] = $forum;
1448 if (count($trackingforums) > 0) {
1449 $cutoffdate = isset($CFG->forum_oldpostdays) ? (time() - ($CFG->forum_oldpostdays*24*60*60)) : 0;
1450 $sql = 'SELECT d.forum,d.course,COUNT(p.id) AS count '.
1451 ' FROM {forum_posts} p '.
1452 ' JOIN {forum_discussions} d ON p.discussion = d.id '.
1453 ' LEFT JOIN {forum_read} r ON r.postid = p.id AND r.userid = ? WHERE (';
1454 $params = array($USER->id);
1456 foreach ($trackingforums as $track) {
1457 $sql .= '(d.forum = ? AND (d.groupid = -1 OR d.groupid = 0 OR d.groupid = ?)) OR ';
1458 $params[] = $track->id;
1459 if (isset($SESSION->currentgroup[$track->course])) {
1460 $groupid = $SESSION->currentgroup[$track->course];
1462 // get first groupid
1463 $groupids = groups_get_all_groups($track->course, $USER->id);
1466 $groupid = key($groupids);
1467 $SESSION->currentgroup[$track->course] = $groupid;
1473 $params[] = $groupid;
1475 $sql = substr($sql,0,-3); // take off the last OR
1476 $sql .= ') AND p.modified >= ? AND r.id is NULL ';
1477 $sql .= 'AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)) ';
1478 $sql .= 'GROUP BY d.forum,d.course';
1479 $params[] = $cutoffdate;
1483 if (!$unread = $DB->get_records_sql($sql, $params)) {
1490 if (empty($unread) and empty($forumsnewposts)) {
1494 $strforum = get_string('modulename','forum');
1496 foreach ($forums as $forum) {
1500 $showunread = false;
1501 // either we have something from logs, or trackposts, or nothing.
1502 if (array_key_exists($forum->id, $forumsnewposts) && !empty($forumsnewposts[$forum->id])) {
1503 $count = $forumsnewposts[$forum->id]->count;
1505 if (array_key_exists($forum->id,$unread)) {
1506 $thisunread = $unread[$forum->id]->count;
1509 if ($count > 0 || $thisunread > 0) {
1510 $str .= '<div class="overview forum"><div class="name">'.$strforum.': <a title="'.$strforum.'" href="'.$CFG->wwwroot.'/mod/forum/view.php?f='.$forum->id.'">'.
1511 $forum->name.'</a></div>';
1512 $str .= '<div class="info"><span class="postsincelogin">';
1513 $str .= get_string('overviewnumpostssince', 'forum', $count)."</span>";
1514 if (!empty($showunread)) {
1515 $str .= '<div class="unreadposts">'.get_string('overviewnumunread', 'forum', $thisunread).'</div>';
1517 $str .= '</div></div>';
1520 if (!array_key_exists($forum->course,$htmlarray)) {
1521 $htmlarray[$forum->course] = array();
1523 if (!array_key_exists('forum',$htmlarray[$forum->course])) {
1524 $htmlarray[$forum->course]['forum'] = ''; // initialize, avoid warnings
1526 $htmlarray[$forum->course]['forum'] .= $str;
1532 * Given a course and a date, prints a summary of all the new
1533 * messages posted in the course since that date
1538 * @uses CONTEXT_MODULE
1539 * @uses VISIBLEGROUPS
1540 * @param object $course
1541 * @param bool $viewfullnames capability
1542 * @param int $timestart
1543 * @return bool success
1545 function forum_print_recent_activity($course, $viewfullnames, $timestart) {
1546 global $CFG, $USER, $DB, $OUTPUT;
1548 // do not use log table if possible, it may be huge and is expensive to join with other tables
1550 $allnamefields = user_picture::fields('u', null, 'duserid');
1551 if (!$posts = $DB->get_records_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid,
1552 d.timestart, d.timeend, $allnamefields
1553 FROM {forum_posts} p
1554 JOIN {forum_discussions} d ON d.id = p.discussion
1555 JOIN {forum} f ON f.id = d.forum
1556 JOIN {user} u ON u.id = p.userid
1557 WHERE p.created > ? AND f.course = ?
1558 ORDER BY p.id ASC", array($timestart, $course->id))) { // order by initial posting date
1562 $modinfo = get_fast_modinfo($course);
1564 $groupmodes = array();
1567 $strftimerecent = get_string('strftimerecent');
1569 $printposts = array();
1570 foreach ($posts as $post) {
1571 if (!isset($modinfo->instances['forum'][$post->forum])) {
1575 $cm = $modinfo->instances['forum'][$post->forum];
1576 if (!$cm->uservisible) {
1579 $context = context_module::instance($cm->id);
1581 if (!has_capability('mod/forum:viewdiscussion', $context)) {
1585 if (!empty($CFG->forum_enabletimedposts) and $USER->id != $post->duserid
1586 and (($post->timestart > 0 and $post->timestart > time()) or ($post->timeend > 0 and $post->timeend < time()))) {
1587 if (!has_capability('mod/forum:viewhiddentimedposts', $context)) {
1592 // Check that the user can see the discussion.
1593 if (forum_is_user_group_discussion($cm, $post->groupid)) {
1594 $printposts[] = $post;
1604 echo $OUTPUT->heading(get_string('newforumposts', 'forum').':', 3);
1605 echo "\n<ul class='unlist'>\n";
1607 foreach ($printposts as $post) {
1608 $subjectclass = empty($post->parent) ? ' bold' : '';
1610 echo '<li><div class="head">'.
1611 '<div class="date">'.userdate($post->modified, $strftimerecent).'</div>'.
1612 '<div class="name">'.fullname($post, $viewfullnames).'</div>'.
1614 echo '<div class="info'.$subjectclass.'">';
1615 if (empty($post->parent)) {
1616 echo '"<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">';
1618 echo '"<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'&parent='.$post->parent.'#p'.$post->id.'">';
1620 $post->subject = break_up_long_words(format_string($post->subject, true));
1621 echo $post->subject;
1622 echo "</a>\"</div></li>\n";
1631 * Return grade for given user or all users.
1635 * @param object $forum
1636 * @param int $userid optional user id, 0 means all users
1637 * @return array array of grades, false if none
1639 function forum_get_user_grades($forum, $userid = 0) {
1642 require_once($CFG->dirroot.'/rating/lib.php');
1644 $ratingoptions = new stdClass;
1645 $ratingoptions->component = 'mod_forum';
1646 $ratingoptions->ratingarea = 'post';
1648 //need these to work backwards to get a context id. Is there a better way to get contextid from a module instance?
1649 $ratingoptions->modulename = 'forum';
1650 $ratingoptions->moduleid = $forum->id;
1651 $ratingoptions->userid = $userid;
1652 $ratingoptions->aggregationmethod = $forum->assessed;
1653 $ratingoptions->scaleid = $forum->scale;
1654 $ratingoptions->itemtable = 'forum_posts';
1655 $ratingoptions->itemtableusercolumn = 'userid';
1657 $rm = new rating_manager();
1658 return $rm->get_user_grades($ratingoptions);
1662 * Update activity grades
1665 * @param object $forum
1666 * @param int $userid specific user only, 0 means all
1667 * @param boolean $nullifnone return null if grade does not exist
1670 function forum_update_grades($forum, $userid=0, $nullifnone=true) {
1672 require_once($CFG->libdir.'/gradelib.php');
1674 if (!$forum->assessed) {
1675 forum_grade_item_update($forum);
1677 } else if ($grades = forum_get_user_grades($forum, $userid)) {
1678 forum_grade_item_update($forum, $grades);
1680 } else if ($userid and $nullifnone) {
1681 $grade = new stdClass();
1682 $grade->userid = $userid;
1683 $grade->rawgrade = NULL;
1684 forum_grade_item_update($forum, $grade);
1687 forum_grade_item_update($forum);
1692 * Create/update grade item for given forum
1695 * @uses GRADE_TYPE_NONE
1696 * @uses GRADE_TYPE_VALUE
1697 * @uses GRADE_TYPE_SCALE
1698 * @param stdClass $forum Forum object with extra cmidnumber
1699 * @param mixed $grades Optional array/object of grade(s); 'reset' means reset grades in gradebook
1700 * @return int 0 if ok
1702 function forum_grade_item_update($forum, $grades=NULL) {
1704 if (!function_exists('grade_update')) { //workaround for buggy PHP versions
1705 require_once($CFG->libdir.'/gradelib.php');
1708 $params = array('itemname'=>$forum->name, 'idnumber'=>$forum->cmidnumber);
1710 if (!$forum->assessed or $forum->scale == 0) {
1711 $params['gradetype'] = GRADE_TYPE_NONE;
1713 } else if ($forum->scale > 0) {
1714 $params['gradetype'] = GRADE_TYPE_VALUE;
1715 $params['grademax'] = $forum->scale;
1716 $params['grademin'] = 0;
1718 } else if ($forum->scale < 0) {
1719 $params['gradetype'] = GRADE_TYPE_SCALE;
1720 $params['scaleid'] = -$forum->scale;
1723 if ($grades === 'reset') {
1724 $params['reset'] = true;
1728 return grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, $grades, $params);
1732 * Delete grade item for given forum
1735 * @param stdClass $forum Forum object
1736 * @return grade_item
1738 function forum_grade_item_delete($forum) {
1740 require_once($CFG->libdir.'/gradelib.php');
1742 return grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, NULL, array('deleted'=>1));
1747 * This function returns if a scale is being used by one forum
1750 * @param int $forumid
1751 * @param int $scaleid negative number
1754 function forum_scale_used ($forumid,$scaleid) {
1758 $rec = $DB->get_record("forum",array("id" => "$forumid","scale" => "-$scaleid"));
1760 if (!empty($rec) && !empty($scaleid)) {
1768 * Checks if scale is being used by any instance of forum
1770 * This is used to find out if scale used anywhere
1773 * @param $scaleid int
1774 * @return boolean True if the scale is used by any forum
1776 function forum_scale_used_anywhere($scaleid) {
1778 if ($scaleid and $DB->record_exists('forum', array('scale' => -$scaleid))) {
1785 // SQL FUNCTIONS ///////////////////////////////////////////////////////////
1788 * Gets a post with all info ready for forum_print_post
1789 * Most of these joins are just to get the forum id
1793 * @param int $postid
1794 * @return mixed array of posts or false
1796 function forum_get_post_full($postid) {
1799 $allnames = get_all_user_name_fields(true, 'u');
1800 return $DB->get_record_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
1801 FROM {forum_posts} p
1802 JOIN {forum_discussions} d ON p.discussion = d.id
1803 LEFT JOIN {user} u ON p.userid = u.id
1804 WHERE p.id = ?", array($postid));
1808 * Gets all posts in discussion including top parent.
1813 * @param int $discussionid
1814 * @param string $sort
1815 * @param bool $tracking does user track the forum?
1816 * @return array of posts
1818 function forum_get_all_discussion_posts($discussionid, $sort, $tracking=false) {
1819 global $CFG, $DB, $USER;
1826 $tr_sel = ", fr.id AS postread";
1827 $tr_join = "LEFT JOIN {forum_read} fr ON (fr.postid = p.id AND fr.userid = ?)";
1828 $params[] = $USER->id;
1831 $allnames = get_all_user_name_fields(true, 'u');
1832 $params[] = $discussionid;
1833 if (!$posts = $DB->get_records_sql("SELECT p.*, $allnames, u.email, u.picture, u.imagealt $tr_sel
1834 FROM {forum_posts} p
1835 LEFT JOIN {user} u ON p.userid = u.id
1837 WHERE p.discussion = ?
1838 ORDER BY $sort", $params)) {
1842 foreach ($posts as $pid=>$p) {
1844 if (forum_tp_is_post_old($p)) {
1845 $posts[$pid]->postread = true;
1851 if (!isset($posts[$p->parent])) {
1852 continue; // parent does not exist??
1854 if (!isset($posts[$p->parent]->children)) {
1855 $posts[$p->parent]->children = array();
1857 $posts[$p->parent]->children[$pid] =& $posts[$pid];
1860 // Start with the last child of the first post.
1861 $post = &$posts[reset($posts)->id];
1864 while (!$lastpost) {
1865 if (!isset($post->children)) {
1866 $post->lastpost = true;
1869 // Go to the last child of this post.
1870 $post = &$posts[end($post->children)->id];
1878 * An array of forum objects that the user is allowed to read/search through.
1883 * @param int $userid
1884 * @param int $courseid if 0, we look for forums throughout the whole site.
1885 * @return array of forum objects, or false if no matches
1886 * Forum objects have the following attributes:
1887 * id, type, course, cmid, cmvisible, cmgroupmode, accessallgroups,
1888 * viewhiddentimedposts
1890 function forum_get_readable_forums($userid, $courseid=0) {
1892 global $CFG, $DB, $USER;
1893 require_once($CFG->dirroot.'/course/lib.php');
1895 if (!$forummod = $DB->get_record('modules', array('name' => 'forum'))) {
1896 print_error('notinstalled', 'forum');
1900 $courses = $DB->get_records('course', array('id' => $courseid));
1902 // If no course is specified, then the user can see SITE + his courses.
1903 $courses1 = $DB->get_records('course', array('id' => SITEID));
1904 $courses2 = enrol_get_users_courses($userid, true, array('modinfo'));
1905 $courses = array_merge($courses1, $courses2);
1911 $readableforums = array();
1913 foreach ($courses as $course) {
1915 $modinfo = get_fast_modinfo($course);
1917 if (empty($modinfo->instances['forum'])) {
1922 $courseforums = $DB->get_records('forum', array('course' => $course->id));
1924 foreach ($modinfo->instances['forum'] as $forumid => $cm) {
1925 if (!$cm->uservisible or !isset($courseforums[$forumid])) {
1928 $context = context_module::instance($cm->id);
1929 $forum = $courseforums[$forumid];
1930 $forum->context = $context;
1933 if (!has_capability('mod/forum:viewdiscussion', $context)) {
1938 if (groups_get_activity_groupmode($cm, $course) == SEPARATEGROUPS and !has_capability('moodle/site:accessallgroups', $context)) {
1940 $forum->onlygroups = $modinfo->get_groups($cm->groupingid);
1941 $forum->onlygroups[] = -1;
1944 /// hidden timed discussions
1945 $forum->viewhiddentimedposts = true;
1946 if (!empty($CFG->forum_enabletimedposts)) {
1947 if (!has_capability('mod/forum:viewhiddentimedposts', $context)) {
1948 $forum->viewhiddentimedposts = false;
1953 if ($forum->type == 'qanda'
1954 && !has_capability('mod/forum:viewqandawithoutposting', $context)) {
1956 // We need to check whether the user has posted in the qanda forum.
1957 $forum->onlydiscussions = array(); // Holds discussion ids for the discussions
1958 // the user is allowed to see in this forum.
1959 if ($discussionspostedin = forum_discussions_user_has_posted_in($forum->id, $USER->id)) {
1960 foreach ($discussionspostedin as $d) {
1961 $forum->onlydiscussions[] = $d->id;
1966 $readableforums[$forum->id] = $forum;
1971 } // End foreach $courses
1973 return $readableforums;
1977 * Returns a list of posts found using an array of search terms.
1982 * @param array $searchterms array of search terms, e.g. word +word -word
1983 * @param int $courseid if 0, we search through the whole site
1984 * @param int $limitfrom
1985 * @param int $limitnum
1986 * @param int &$totalcount
1987 * @param string $extrasql
1988 * @return array|bool Array of posts found or false
1990 function forum_search_posts($searchterms, $courseid=0, $limitfrom=0, $limitnum=50,
1991 &$totalcount, $extrasql='') {
1992 global $CFG, $DB, $USER;
1993 require_once($CFG->libdir.'/searchlib.php');
1995 $forums = forum_get_readable_forums($USER->id, $courseid);
1997 if (count($forums) == 0) {
2002 $now = round(time(), -2); // db friendly
2004 $fullaccess = array();
2008 foreach ($forums as $forumid => $forum) {
2011 if (!$forum->viewhiddentimedposts) {
2012 $select[] = "(d.userid = :userid{$forumid} OR (d.timestart < :timestart{$forumid} AND (d.timeend = 0 OR d.timeend > :timeend{$forumid})))";
2013 $params = array_merge($params, array('userid'.$forumid=>$USER->id, 'timestart'.$forumid=>$now, 'timeend'.$forumid=>$now));
2017 $context = $forum->context;
2019 if ($forum->type == 'qanda'
2020 && !has_capability('mod/forum:viewqandawithoutposting', $context)) {
2021 if (!empty($forum->onlydiscussions)) {
2022 list($discussionid_sql, $discussionid_params) = $DB->get_in_or_equal($forum->onlydiscussions, SQL_PARAMS_NAMED, 'qanda'.$forumid.'_');
2023 $params = array_merge($params, $discussionid_params);
2024 $select[] = "(d.id $discussionid_sql OR p.parent = 0)";
2026 $select[] = "p.parent = 0";
2030 if (!empty($forum->onlygroups)) {
2031 list($groupid_sql, $groupid_params) = $DB->get_in_or_equal($forum->onlygroups, SQL_PARAMS_NAMED, 'grps'.$forumid.'_');
2032 $params = array_merge($params, $groupid_params);
2033 $select[] = "d.groupid $groupid_sql";
2037 $selects = implode(" AND ", $select);
2038 $where[] = "(d.forum = :forum{$forumid} AND $selects)";
2039 $params['forum'.$forumid] = $forumid;
2041 $fullaccess[] = $forumid;
2046 list($fullid_sql, $fullid_params) = $DB->get_in_or_equal($fullaccess, SQL_PARAMS_NAMED, 'fula');
2047 $params = array_merge($params, $fullid_params);
2048 $where[] = "(d.forum $fullid_sql)";
2051 $selectdiscussion = "(".implode(" OR ", $where).")";
2053 $messagesearch = '';
2056 // Need to concat these back together for parser to work.
2057 foreach($searchterms as $searchterm){
2058 if ($searchstring != '') {
2059 $searchstring .= ' ';
2061 $searchstring .= $searchterm;
2064 // We need to allow quoted strings for the search. The quotes *should* be stripped
2065 // by the parser, but this should be examined carefully for security implications.
2066 $searchstring = str_replace("\\\"","\"",$searchstring);
2067 $parser = new search_parser();
2068 $lexer = new search_lexer($parser);
2070 if ($lexer->parse($searchstring)) {
2071 $parsearray = $parser->get_parsed_array();
2072 list($messagesearch, $msparams) = search_generate_SQL($parsearray, 'p.message', 'p.subject',
2073 'p.userid', 'u.id', 'u.firstname',
2074 'u.lastname', 'p.modified', 'd.forum');
2075 $params = array_merge($params, $msparams);
2078 $fromsql = "{forum_posts} p,
2079 {forum_discussions} d,
2082 $selectsql = " $messagesearch
2083 AND p.discussion = d.id
2085 AND $selectdiscussion
2088 $countsql = "SELECT COUNT(*)
2092 $allnames = get_all_user_name_fields(true, 'u');
2093 $searchsql = "SELECT p.*,
2101 ORDER BY p.modified DESC";
2103 $totalcount = $DB->count_records_sql($countsql, $params);
2105 return $DB->get_records_sql($searchsql, $params, $limitfrom, $limitnum);
2109 * Returns a list of all new posts that have not been mailed yet
2111 * @param int $starttime posts created after this time
2112 * @param int $endtime posts created before this
2113 * @param int $now used for timed discussions only
2116 function forum_get_unmailed_posts($starttime, $endtime, $now=null) {
2120 $params['mailed'] = FORUM_MAILED_PENDING;
2121 $params['ptimestart'] = $starttime;
2122 $params['ptimeend'] = $endtime;
2123 $params['mailnow'] = 1;
2125 if (!empty($CFG->forum_enabletimedposts)) {
2129 $selectsql = "AND (p.created >= :ptimestart OR d.timestart >= :pptimestart)";
2130 $params['pptimestart'] = $starttime;
2131 $timedsql = "AND (d.timestart < :dtimestart AND (d.timeend = 0 OR d.timeend > :dtimeend))";
2132 $params['dtimestart'] = $now;
2133 $params['dtimeend'] = $now;
2136 $selectsql = "AND p.created >= :ptimestart";
2139 return $DB->get_records_sql("SELECT p.*, d.course, d.forum
2140 FROM {forum_posts} p
2141 JOIN {forum_discussions} d ON d.id = p.discussion
2142 WHERE p.mailed = :mailed
2144 AND (p.created < :ptimeend OR p.mailnow = :mailnow)
2146 ORDER BY p.modified ASC", $params);
2150 * Marks posts before a certain time as being mailed already
2154 * @param int $endtime
2155 * @param int $now Defaults to time()
2158 function forum_mark_old_posts_as_mailed($endtime, $now=null) {
2166 $params['mailedsuccess'] = FORUM_MAILED_SUCCESS;
2167 $params['now'] = $now;
2168 $params['endtime'] = $endtime;
2169 $params['mailnow'] = 1;
2170 $params['mailedpending'] = FORUM_MAILED_PENDING;
2172 if (empty($CFG->forum_enabletimedposts)) {
2173 return $DB->execute("UPDATE {forum_posts}
2174 SET mailed = :mailedsuccess
2175 WHERE (created < :endtime OR mailnow = :mailnow)
2176 AND mailed = :mailedpending", $params);
2178 return $DB->execute("UPDATE {forum_posts}
2179 SET mailed = :mailedsuccess
2180 WHERE discussion NOT IN (SELECT d.id
2181 FROM {forum_discussions} d
2182 WHERE d.timestart > :now)
2183 AND (created < :endtime OR mailnow = :mailnow)
2184 AND mailed = :mailedpending", $params);
2189 * Get all the posts for a user in a forum suitable for forum_print_post
2193 * @uses CONTEXT_MODULE
2196 function forum_get_user_posts($forumid, $userid) {
2200 $params = array($forumid, $userid);
2202 if (!empty($CFG->forum_enabletimedposts)) {
2203 $cm = get_coursemodule_from_instance('forum', $forumid);
2204 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2206 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2212 $allnames = get_all_user_name_fields(true, 'u');
2213 return $DB->get_records_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
2215 JOIN {forum_discussions} d ON d.forum = f.id
2216 JOIN {forum_posts} p ON p.discussion = d.id
2217 JOIN {user} u ON u.id = p.userid
2221 ORDER BY p.modified ASC", $params);
2225 * Get all the discussions user participated in
2229 * @uses CONTEXT_MODULE
2230 * @param int $forumid
2231 * @param int $userid
2232 * @return array Array or false
2234 function forum_get_user_involved_discussions($forumid, $userid) {
2238 $params = array($forumid, $userid);
2239 if (!empty($CFG->forum_enabletimedposts)) {
2240 $cm = get_coursemodule_from_instance('forum', $forumid);
2241 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2243 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2249 return $DB->get_records_sql("SELECT DISTINCT d.*
2251 JOIN {forum_discussions} d ON d.forum = f.id
2252 JOIN {forum_posts} p ON p.discussion = d.id
2255 $timedsql", $params);
2259 * Get all the posts for a user in a forum suitable for forum_print_post
2263 * @param int $forumid
2264 * @param int $userid
2265 * @return array of counts or false
2267 function forum_count_user_posts($forumid, $userid) {
2271 $params = array($forumid, $userid);
2272 if (!empty($CFG->forum_enabletimedposts)) {
2273 $cm = get_coursemodule_from_instance('forum', $forumid);
2274 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2276 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2282 return $DB->get_record_sql("SELECT COUNT(p.id) AS postcount, MAX(p.modified) AS lastpost
2284 JOIN {forum_discussions} d ON d.forum = f.id
2285 JOIN {forum_posts} p ON p.discussion = d.id
2286 JOIN {user} u ON u.id = p.userid
2289 $timedsql", $params);
2293 * Given a log entry, return the forum post details for it.
2297 * @param object $log
2298 * @return array|null
2300 function forum_get_post_from_log($log) {
2303 $allnames = get_all_user_name_fields(true, 'u');
2304 if ($log->action == "add post") {
2306 return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
2307 FROM {forum_discussions} d,
2312 AND d.id = p.discussion
2314 AND u.deleted <> '1'
2315 AND f.id = d.forum", array($log->info));
2318 } else if ($log->action == "add discussion") {
2320 return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
2321 FROM {forum_discussions} d,
2326 AND d.firstpost = p.id
2328 AND u.deleted <> '1'
2329 AND f.id = d.forum", array($log->info));
2335 * Given a discussion id, return the first post from the discussion
2339 * @param int $dicsussionid
2342 function forum_get_firstpost_from_discussion($discussionid) {
2345 return $DB->get_record_sql("SELECT p.*
2346 FROM {forum_discussions} d,
2349 AND d.firstpost = p.id ", array($discussionid));
2353 * Returns an array of counts of replies to each discussion
2357 * @param int $forumid
2358 * @param string $forumsort
2361 * @param int $perpage
2364 function forum_count_discussion_replies($forumid, $forumsort="", $limit=-1, $page=-1, $perpage=0) {
2370 } else if ($page != -1) {
2371 $limitfrom = $page*$perpage;
2372 $limitnum = $perpage;
2378 if ($forumsort == "") {
2383 $orderby = "ORDER BY $forumsort";
2384 $groupby = ", ".strtolower($forumsort);
2385 $groupby = str_replace('desc', '', $groupby);
2386 $groupby = str_replace('asc', '', $groupby);
2389 if (($limitfrom == 0 and $limitnum == 0) or $forumsort == "") {
2390 $sql = "SELECT p.discussion, COUNT(p.id) AS replies, MAX(p.id) AS lastpostid
2391 FROM {forum_posts} p
2392 JOIN {forum_discussions} d ON p.discussion = d.id
2393 WHERE p.parent > 0 AND d.forum = ?
2394 GROUP BY p.discussion";
2395 return $DB->get_records_sql($sql, array($forumid));
2398 $sql = "SELECT p.discussion, (COUNT(p.id) - 1) AS replies, MAX(p.id) AS lastpostid
2399 FROM {forum_posts} p
2400 JOIN {forum_discussions} d ON p.discussion = d.id
2402 GROUP BY p.discussion $groupby $orderby";
2403 return $DB->get_records_sql($sql, array($forumid), $limitfrom, $limitnum);
2411 * @staticvar array $cache
2412 * @param object $forum
2414 * @param object $course
2417 function forum_count_discussions($forum, $cm, $course) {
2418 global $CFG, $DB, $USER;
2420 static $cache = array();
2422 $now = round(time(), -2); // db cache friendliness
2424 $params = array($course->id);
2426 if (!isset($cache[$course->id])) {
2427 if (!empty($CFG->forum_enabletimedposts)) {
2428 $timedsql = "AND d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)";
2435 $sql = "SELECT f.id, COUNT(d.id) as dcount
2437 JOIN {forum_discussions} d ON d.forum = f.id
2442 if ($counts = $DB->get_records_sql($sql, $params)) {
2443 foreach ($counts as $count) {
2444 $counts[$count->id] = $count->dcount;
2446 $cache[$course->id] = $counts;
2448 $cache[$course->id] = array();
2452 if (empty($cache[$course->id][$forum->id])) {
2456 $groupmode = groups_get_activity_groupmode($cm, $course);
2458 if ($groupmode != SEPARATEGROUPS) {
2459 return $cache[$course->id][$forum->id];
2462 if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id))) {
2463 return $cache[$course->id][$forum->id];
2466 require_once($CFG->dirroot.'/course/lib.php');
2468 $modinfo = get_fast_modinfo($course);
2470 $mygroups = $modinfo->get_groups($cm->groupingid);
2472 // add all groups posts
2475 list($mygroups_sql, $params) = $DB->get_in_or_equal($mygroups);
2476 $params[] = $forum->id;
2478 if (!empty($CFG->forum_enabletimedposts)) {
2479 $timedsql = "AND d.timestart < $now AND (d.timeend = 0 OR d.timeend > $now)";
2486 $sql = "SELECT COUNT(d.id)
2487 FROM {forum_discussions} d
2488 WHERE d.groupid $mygroups_sql AND d.forum = ?
2491 return $DB->get_field_sql($sql, $params);
2495 * Get all discussions in a forum
2500 * @uses CONTEXT_MODULE
2501 * @uses VISIBLEGROUPS
2503 * @param string $forumsort
2504 * @param bool $fullpost
2505 * @param int $unused
2507 * @param bool $userlastmodified
2509 * @param int $perpage
2510 * @param int $groupid if groups enabled, get discussions for this group overriding the current group.
2511 * Use FORUM_POSTS_ALL_USER_GROUPS for all the user groups
2514 function forum_get_discussions($cm, $forumsort="", $fullpost=true, $unused=-1, $limit=-1,
2515 $userlastmodified=false, $page=-1, $perpage=0, $groupid = -1) {
2516 global $CFG, $DB, $USER;
2520 $now = round(time(), -2);
2521 $params = array($cm->instance);
2523 $modcontext = context_module::instance($cm->id);
2525 if (!has_capability('mod/forum:viewdiscussion', $modcontext)) { /// User must have perms to view discussions
2529 if (!empty($CFG->forum_enabletimedposts)) { /// Users must fulfill timed posts
2531 if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
2532 $timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
2536 $timelimit .= " OR d.userid = ?";
2537 $params[] = $USER->id;
2546 } else if ($page != -1) {
2547 $limitfrom = $page*$perpage;
2548 $limitnum = $perpage;
2554 $groupmode = groups_get_activity_groupmode($cm);
2558 if (empty($modcontext)) {
2559 $modcontext = context_module::instance($cm->id);
2562 // Special case, we received a groupid to override currentgroup.
2564 $course = get_course($cm->course);
2565 if (!groups_group_visible($groupid, $course, $cm)) {
2566 // User doesn't belong to this group, return nothing.
2569 $currentgroup = $groupid;
2570 } else if ($groupid === -1) {
2571 $currentgroup = groups_get_activity_group($cm);
2573 // Get discussions for all groups current user can see.
2574 $currentgroup = null;
2577 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2578 if ($currentgroup) {
2579 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2580 $params[] = $currentgroup;
2588 // Get discussions for all groups current user can see.
2589 if ($currentgroup === null) {
2590 $mygroups = array_keys(groups_get_all_groups($cm->course, $USER->id, $cm->groupingid, 'g.id'));
2591 if (empty($mygroups)) {
2592 $groupselect = "AND d.groupid = -1";
2594 list($insqlgroups, $inparamsgroups) = $DB->get_in_or_equal($mygroups);
2595 $groupselect = "AND (d.groupid = -1 OR d.groupid $insqlgroups)";
2596 $params = array_merge($params, $inparamsgroups);
2598 } else if ($currentgroup) {
2599 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2600 $params[] = $currentgroup;
2602 $groupselect = "AND d.groupid = -1";
2608 if (empty($forumsort)) {
2609 $forumsort = forum_get_default_sort_order();
2611 if (empty($fullpost)) {
2612 $postdata = "p.id,p.subject,p.modified,p.discussion,p.userid";
2617 if (empty($userlastmodified)) { // We don't need to know this
2621 $umfields = ', ' . get_all_user_name_fields(true, 'um', null, 'um') . ', um.email AS umemail, um.picture AS umpicture,
2622 um.imagealt AS umimagealt';
2623 $umtable = " LEFT JOIN {user} um ON (d.usermodified = um.id)";
2626 $allnames = get_all_user_name_fields(true, 'u');
2627 $sql = "SELECT $postdata, d.name, d.timemodified, d.usermodified, d.groupid, d.timestart, d.timeend, d.pinned, $allnames,
2628 u.email, u.picture, u.imagealt $umfields
2629 FROM {forum_discussions} d
2630 JOIN {forum_posts} p ON p.discussion = d.id
2631 JOIN {user} u ON p.userid = u.id
2633 WHERE d.forum = ? AND p.parent = 0
2634 $timelimit $groupselect
2635 ORDER BY $forumsort, d.id DESC";
2636 return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
2640 * Gets the neighbours (previous and next) of a discussion.
2642 * The calculation is based on the timemodified when time modified or time created is identical
2643 * It will revert to using the ID to sort consistently. This is better tha skipping a discussion.
2645 * For blog-style forums, the calculation is based on the original creation time of the
2648 * Please note that this does not check whether or not the discussion passed is accessible
2649 * by the user, it simply uses it as a reference to find the neighbours. On the other hand,
2650 * the returned neighbours are checked and are accessible to the current user.
2652 * @param object $cm The CM record.
2653 * @param object $discussion The discussion record.
2654 * @param object $forum The forum instance record.
2655 * @return array That always contains the keys 'prev' and 'next'. When there is a result
2656 * they contain the record with minimal information such as 'id' and 'name'.
2657 * When the neighbour is not found the value is false.
2659 function forum_get_discussion_neighbours($cm, $discussion, $forum) {
2660 global $CFG, $DB, $USER;
2662 if ($cm->instance != $discussion->forum or $discussion->forum != $forum->id or $forum->id != $cm->instance) {
2663 throw new coding_exception('Discussion is not part of the same forum.');
2666 $neighbours = array('prev' => false, 'next' => false);
2667 $now = round(time(), -2);
2670 $modcontext = context_module::instance($cm->id);
2671 $groupmode = groups_get_activity_groupmode($cm);
2672 $currentgroup = groups_get_activity_group($cm);
2674 // Users must fulfill timed posts.
2676 if (!empty($CFG->forum_enabletimedposts)) {
2677 if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
2678 $timelimit = ' AND ((d.timestart <= :tltimestart AND (d.timeend = 0 OR d.timeend > :tltimeend))';
2679 $params['tltimestart'] = $now;
2680 $params['tltimeend'] = $now;
2682 $timelimit .= ' OR d.userid = :tluserid';
2683 $params['tluserid'] = $USER->id;
2689 // Limiting to posts accessible according to groups.
2692 if ($groupmode == VISIBLEGROUPS || has_capability('moodle/site:accessallgroups', $modcontext)) {
2693 if ($currentgroup) {
2694 $groupselect = 'AND (d.groupid = :groupid OR d.groupid = -1)';
2695 $params['groupid'] = $currentgroup;
2698 if ($currentgroup) {
2699 $groupselect = 'AND (d.groupid = :groupid OR d.groupid = -1)';
2700 $params['groupid'] = $currentgroup;
2702 $groupselect = 'AND d.groupid = -1';
2707 $params['forumid'] = $cm->instance;
2708 $params['discid1'] = $discussion->id;
2709 $params['discid2'] = $discussion->id;
2710 $params['discid3'] = $discussion->id;
2711 $params['discid4'] = $discussion->id;
2712 $params['disctimecompare1'] = $discussion->timemodified;
2713 $params['disctimecompare2'] = $discussion->timemodified;
2714 $params['pinnedstate1'] = (int) $discussion->pinned;
2715 $params['pinnedstate2'] = (int) $discussion->pinned;
2716 $params['pinnedstate3'] = (int) $discussion->pinned;
2717 $params['pinnedstate4'] = (int) $discussion->pinned;
2719 $sql = "SELECT d.id, d.name, d.timemodified, d.groupid, d.timestart, d.timeend
2720 FROM {forum_discussions} d
2721 JOIN {forum_posts} p ON d.firstpost = p.id
2722 WHERE d.forum = :forumid
2723 AND d.id <> :discid1
2726 $comparefield = "d.timemodified";
2727 $comparevalue = ":disctimecompare1";
2728 $comparevalue2 = ":disctimecompare2";
2729 if (!empty($CFG->forum_enabletimedposts)) {
2730 // Here we need to take into account the release time (timestart)
2731 // if one is set, of the neighbouring posts and compare it to the
2732 // timestart or timemodified of *this* post depending on if the
2733 // release date of this post is in the future or not.
2734 // This stops discussions that appear later because of the
2735 // timestart value from being buried under discussions that were
2737 $comparefield = "CASE WHEN d.timemodified < d.timestart
2738 THEN d.timestart ELSE d.timemodified END";
2739 if ($discussion->timemodified < $discussion->timestart) {
2740 // Normally we would just use the timemodified for sorting
2741 // discussion posts. However, when timed discussions are enabled,
2742 // then posts need to be sorted base on the later of timemodified
2743 // or the release date of the post (timestart).
2744 $params['disctimecompare1'] = $discussion->timestart;
2745 $params['disctimecompare2'] = $discussion->timestart;
2748 $orderbydesc = forum_get_default_sort_order(true, $comparefield, 'd', false);
2749 $orderbyasc = forum_get_default_sort_order(false, $comparefield, 'd', false);
2751 if ($forum->type === 'blog') {
2752 $subselect = "SELECT pp.created
2753 FROM {forum_discussions} dd
2754 JOIN {forum_posts} pp ON dd.firstpost = pp.id ";
2756 $subselectwhere1 = " WHERE dd.id = :discid3";
2757 $subselectwhere2 = " WHERE dd.id = :discid4";
2759 $comparefield = "p.created";
2761 $sub1 = $subselect.$subselectwhere1;
2762 $comparevalue = "($sub1)";
2764 $sub2 = $subselect.$subselectwhere2;
2765 $comparevalue2 = "($sub2)";
2767 $orderbydesc = "d.pinned, p.created DESC";
2768 $orderbyasc = "d.pinned, p.created ASC";
2771 $prevsql = $sql . " AND ( (($comparefield < $comparevalue) AND :pinnedstate1 = d.pinned)
2772 OR ($comparefield = $comparevalue2 AND (d.pinned = 0 OR d.pinned = :pinnedstate4) AND d.id < :discid2)
2773 OR (d.pinned = 0 AND d.pinned <> :pinnedstate2))
2774 ORDER BY CASE WHEN d.pinned = :pinnedstate3 THEN 1 ELSE 0 END DESC, $orderbydesc, d.id DESC";
2776 $nextsql = $sql . " AND ( (($comparefield > $comparevalue) AND :pinnedstate1 = d.pinned)
2777 OR ($comparefield = $comparevalue2 AND (d.pinned = 1 OR d.pinned = :pinnedstate4) AND d.id > :discid2)
2778 OR (d.pinned = 1 AND d.pinned <> :pinnedstate2))
2779 ORDER BY CASE WHEN d.pinned = :pinnedstate3 THEN 1 ELSE 0 END DESC, $orderbyasc, d.id ASC";
2781 $neighbours['prev'] = $DB->get_record_sql($prevsql, $params, IGNORE_MULTIPLE);
2782 $neighbours['next'] = $DB->get_record_sql($nextsql, $params, IGNORE_MULTIPLE);
2787 * Get the sql to use in the ORDER BY clause for forum discussions.
2789 * This has the ordering take timed discussion windows into account.
2791 * @param bool $desc True for DESC, False for ASC.
2792 * @param string $compare The field in the SQL to compare to normally sort by.
2793 * @param string $prefix The prefix being used for the discussion table.
2794 * @param bool $pinned sort pinned posts to the top
2797 function forum_get_default_sort_order($desc = true, $compare = 'd.timemodified', $prefix = 'd', $pinned = true) {
2800 if (!empty($prefix)) {
2804 $dir = $desc ? 'DESC' : 'ASC';
2806 if ($pinned == true) {
2807 $pinned = "{$prefix}pinned DESC,";
2812 $sort = "{$prefix}timemodified";
2813 if (!empty($CFG->forum_enabletimedposts)) {
2814 $sort = "CASE WHEN {$compare} < {$prefix}timestart
2815 THEN {$prefix}timestart
2819 return "$pinned $sort $dir";
2827 * @uses CONTEXT_MODULE
2828 * @uses VISIBLEGROUPS
2832 function forum_get_discussions_unread($cm) {
2833 global $CFG, $DB, $USER;
2835 $now = round(time(), -2);
2836 $cutoffdate = $now - ($CFG->forum_oldpostdays*24*60*60);
2839 $groupmode = groups_get_activity_groupmode($cm);
2840 $currentgroup = groups_get_activity_group($cm);
2843 $modcontext = context_module::instance($cm->id);
2845 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2846 if ($currentgroup) {
2847 $groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
2848 $params['currentgroup'] = $currentgroup;
2854 //separate groups without access all
2855 if ($currentgroup) {
2856 $groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
2857 $params['currentgroup'] = $currentgroup;
2859 $groupselect = "AND d.groupid = -1";
2866 if (!empty($CFG->forum_enabletimedposts)) {
2867 $timedsql = "AND d.timestart < :now1 AND (d.timeend = 0 OR d.timeend > :now2)";
2868 $params['now1'] = $now;
2869 $params['now2'] = $now;
2874 $sql = "SELECT d.id, COUNT(p.id) AS unread
2875 FROM {forum_discussions} d
2876 JOIN {forum_posts} p ON p.discussion = d.id
2877 LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = $USER->id)
2878 WHERE d.forum = {$cm->instance}
2879 AND p.modified >= :cutoffdate AND r.id is NULL
2883 $params['cutoffdate'] = $cutoffdate;
2885 if ($unreads = $DB->get_records_sql($sql, $params)) {
2886 foreach ($unreads as $unread) {
2887 $unreads[$unread->id] = $unread->unread;
2899 * @uses CONEXT_MODULE
2900 * @uses VISIBLEGROUPS
2904 function forum_get_discussions_count($cm) {
2905 global $CFG, $DB, $USER;
2907 $now = round(time(), -2);
2908 $params = array($cm->instance);
2909 $groupmode = groups_get_activity_groupmode($cm);
2910 $currentgroup = groups_get_activity_group($cm);
2913 $modcontext = context_module::instance($cm->id);
2915 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2916 if ($currentgroup) {
2917 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2918 $params[] = $currentgroup;
2924 //seprate groups without access all
2925 if ($currentgroup) {
2926 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2927 $params[] = $currentgroup;
2929 $groupselect = "AND d.groupid = -1";
2938 if (!empty($CFG->forum_enabletimedposts)) {
2940 $modcontext = context_module::instance($cm->id);
2942 if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
2943 $timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
2947 $timelimit .= " OR d.userid = ?";
2948 $params[] = $USER->id;
2954 $sql = "SELECT COUNT(d.id)
2955 FROM {forum_discussions} d
2956 JOIN {forum_posts} p ON p.discussion = d.id
2957 WHERE d.forum = ? AND p.parent = 0
2958 $groupselect $timelimit";
2960 return $DB->get_field_sql($sql, $params);
2964 // OTHER FUNCTIONS ///////////////////////////////////////////////////////////
2970 * @param int $courseid
2971 * @param string $type
2973 function forum_get_course_forum($courseid, $type) {
2974 // How to set up special 1-per-course forums
2975 global $CFG, $DB, $OUTPUT, $USER;
2977 if ($forums = $DB->get_records_select("forum", "course = ? AND type = ?", array($courseid, $type), "id ASC")) {
2978 // There should always only be ONE, but with the right combination of
2979 // errors there might be more. In this case, just return the oldest one (lowest ID).
2980 foreach ($forums as $forum) {
2981 return $forum; // ie the first one
2985 // Doesn't exist, so create one now.
2986 $forum = new stdClass();
2987 $forum->course = $courseid;
2988 $forum->type = "$type";
2989 if (!empty($USER->htmleditor)) {
2990 $forum->introformat = $USER->htmleditor;
2992 switch ($forum->type) {
2994 $forum->name = get_string("namenews", "forum");
2995 $forum->intro = get_string("intronews", "forum");
2996 $forum->forcesubscribe = FORUM_FORCESUBSCRIBE;
2997 $forum->assessed = 0;
2998 if ($courseid == SITEID) {
2999 $forum->name = get_string("sitenews");
3000 $forum->forcesubscribe = 0;
3004 $forum->name = get_string("namesocial", "forum");
3005 $forum->intro = get_string("introsocial", "forum");
3006 $forum->assessed = 0;
3007 $forum->forcesubscribe = 0;
3010 $forum->name = get_string('blogforum', 'forum');
3011 $forum->intro = get_string('introblog', 'forum');
3012 $forum->assessed = 0;
3013 $forum->forcesubscribe = 0;
3016 echo $OUTPUT->notification("That forum type doesn't exist!");
3021 $forum->timemodified = time();
3022 $forum->id = $DB->insert_record("forum", $forum);
3024 if (! $module = $DB->get_record("modules", array("name" => "forum"))) {
3025 echo $OUTPUT->notification("Could not find forum module!!");
3028 $mod = new stdClass();
3029 $mod->course = $courseid;
3030 $mod->module = $module->id;
3031 $mod->instance = $forum->id;
3033 include_once("$CFG->dirroot/course/lib.php");
3034 if (! $mod->coursemodule = add_course_module($mod) ) {
3035 echo $OUTPUT->notification("Could not add a new course module to the course '" . $courseid . "'");
3038 $sectionid = course_add_cm_to_section($courseid, $mod->coursemodule, 0);
3039 return $DB->get_record("forum", array("id" => "$forum->id"));
3043 * Print a forum post
3047 * @uses FORUM_MODE_THREADED
3048 * @uses PORTFOLIO_FORMAT_PLAINHTML
3049 * @uses PORTFOLIO_FORMAT_FILE
3050 * @uses PORTFOLIO_FORMAT_RICHHTML
3051 * @uses PORTFOLIO_ADD_TEXT_LINK
3052 * @uses CONTEXT_MODULE
3053 * @param object $post The post to print.
3054 * @param object $discussion
3055 * @param object $forum
3057 * @param object $course
3058 * @param boolean $ownpost Whether this post belongs to the current user.
3059 * @param boolean $reply Whether to print a 'reply' link at the bottom of the message.
3060 * @param boolean $link Just print a shortened version of the post as a link to the full post.
3061 * @param string $footer Extra stuff to print after the message.
3062 * @param string $highlight Space-separated list of terms to highlight.
3063 * @param int $post_read true, false or -99. If we already know whether this user
3064 * has read this post, pass that in, otherwise, pass in -99, and this
3065 * function will work it out.
3066 * @param boolean $dummyifcantsee When forum_user_can_see_post says that
3067 * the current user can't see this post, if this argument is true
3068 * (the default) then print a dummy 'you can't see this post' post.
3069 * If false, don't output anything at all.
3070 * @param bool|null $istracked
3073 function forum_print_post($post, $discussion, $forum, &$cm, $course, $ownpost=false, $reply=false, $link=false,
3074 $footer="", $highlight="", $postisread=null, $dummyifcantsee=true, $istracked=null, $return=false) {
3075 global $USER, $CFG, $OUTPUT;
3077 require_once($CFG->libdir . '/filelib.php');
3081 // This is an extremely hacky way to ensure we only print the 'unread' anchor
3082 // the first time we encounter an unread post on a page. Ideally this would
3083 // be moved into the caller somehow, and be better testable. But at the time
3084 // of dealing with this bug, this static workaround was the most surgical and
3085 // it fits together with only printing th unread anchor id once on a given page.
3086 static $firstunreadanchorprinted = false;
3088 $modcontext = context_module::instance($cm->id);
3090 $post->course = $course->id;
3091 $post->forum = $forum->id;
3092 $post->message = file_rewrite_pluginfile_urls($post->message, 'pluginfile.php', $modcontext->id, 'mod_forum', 'post', $post->id);
3093 if (!empty($CFG->enableplagiarism)) {
3094 require_once($CFG->libdir.'/plagiarismlib.php');
3095 $post->message .= plagiarism_get_links(array('userid' => $post->userid,
3096 'content' => $post->message,
3098 'course' => $post->course,
3099 'forum' => $post->forum));
3103 if (!isset($cm->cache)) {
3104 $cm->cache = new stdClass;
3107 if (!isset($cm->cache->caps)) {
3108 $cm->cache->caps = array();
3109 $cm->cache->caps['mod/forum:viewdiscussion'] = has_capability('mod/forum:viewdiscussion', $modcontext);
3110 $cm->cache->caps['moodle/site:viewfullnames'] = has_capability('moodle/site:viewfullnames', $modcontext);
3111 $cm->cache->caps['mod/forum:editanypost'] = has_capability('mod/forum:editanypost', $modcontext);
3112 $cm->cache->caps['mod/forum:splitdiscussions'] = has_capability('mod/forum:splitdiscussions', $modcontext);
3113 $cm->cache->caps['mod/forum:deleteownpost'] = has_capability('mod/forum:deleteownpost', $modcontext);
3114 $cm->cache->caps['mod/forum:deleteanypost'] = has_capability('mod/forum:deleteanypost', $modcontext);
3115 $cm->cache->caps['mod/forum:viewanyrating'] = has_capability('mod/forum:viewanyrating', $modcontext);
3116 $cm->cache->caps['mod/forum:exportpost'] = has_capability('mod/forum:exportpost', $modcontext);
3117 $cm->cache->caps['mod/forum:exportownpost'] = has_capability('mod/forum:exportownpost', $modcontext);
3120 if (!isset($cm->uservisible)) {
3121 $cm->uservisible = \core_availability\info_module::is_user_visible($cm, 0, false);
3124 if ($istracked && is_null($postisread)) {
3125 $postisread = forum_tp_is_post_read($USER->id, $post);
3128 if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
3130 if (!$dummyifcantsee) {
3137 $output .= html_writer::tag('a', '', array('id'=>'p'.$post->id));
3138 $output .= html_writer::start_tag('div', array('class'=>'forumpost clearfix',
3140 'aria-label' => get_string('hiddenforumpost', 'forum')));
3141 $output .= html_writer::start_tag('div', array('class'=>'row header'));
3142 $output .= html_writer::tag('div', '', array('class'=>'left picture')); // Picture
3143 if ($post->parent) {
3144 $output .= html_writer::start_tag('div', array('class'=>'topic'));
3146 $output .= html_writer::start_tag('div', array('class'=>'topic starter'));
3148 $output .= html_writer::tag('div', get_string('forumsubjecthidden','forum'), array('class' => 'subject',
3149 'role' => 'header')); // Subject.
3150 $output .= html_writer::tag('div', get_string('forumauthorhidden', 'forum'), array('class' => 'author',
3151 'role' => 'header')); // Author.
3152 $output .= html_writer::end_tag('div');
3153 $output .= html_writer::end_tag('div'); // row
3154 $output .= html_writer::start_tag('div', array('class'=>'row'));
3155 $output .= html_writer::tag('div', ' ', array('class'=>'left side')); // Groups
3156 $output .= html_writer::tag('div', get_string('forumbodyhidden','forum'), array('class'=>'content')); // Content
3157 $output .= html_writer::end_tag('div'); // row
3158 $output .= html_writer::end_tag('div'); // forumpost
3168 $str = new stdClass;
3169 $str->edit = get_string('edit', 'forum');
3170 $str->delete = get_string('delete', 'forum');
3171 $str->reply = get_string('reply', 'forum');
3172 $str->parent = get_string('parent', 'forum');
3173 $str->pruneheading = get_string('pruneheading', 'forum');
3174 $str->prune = get_string('prune', 'forum');
3175 $str->displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
3176 $str->markread = get_string('markread', 'forum');
3177 $str->markunread = get_string('markunread', 'forum');
3180 $discussionlink = new moodle_url('/mod/forum/discuss.php', array('d'=>$post->discussion));
3182 // Build an object that represents the posting user
3183 $postuser = new stdClass;
3184 $postuserfields = explode(',', user_picture::fields());
3185 $postuser = username_load_fields_from_object($postuser, $post, null, $postuserfields);
3186 $postuser->id = $post->userid;
3187 $postuser->fullname = fullname($postuser, $cm->cache->caps['moodle/site:viewfullnames']);
3188 $postuser->profilelink = new moodle_url('/user/view.php', array('id'=>$post->userid, 'course'=>$course->id));
3190 // Prepare the groups the posting user belongs to
3191 if (isset($cm->cache->usersgroups)) {
3193 if (isset($cm->cache->usersgroups[$post->userid])) {
3194 foreach ($cm->cache->usersgroups[$post->userid] as $gid) {
3195 $groups[$gid] = $cm->cache->groups[$gid];
3199 $groups = groups_get_all_groups($course->id, $post->userid, $cm->groupingid);
3202 // Prepare the attachements for the post, files then images
3203 list($attachments, $attachedimages) = forum_print_attachments($post, $cm, 'separateimages');
3205 // Determine if we need to shorten this post
3206 $shortenpost = ($link && (strlen(strip_tags($post->message)) > $CFG->forum_longpost));
3209 // Prepare an array of commands
3210 $commands = array();
3213 $permalink = new moodle_url($discussionlink);
3214 $permalink->set_anchor('p' . $post->id);
3215 $commands[] = array('url' => $permalink, 'text' => get_string('permalink', 'forum'));
3217 // SPECIAL CASE: The front page can display a news item post to non-logged in users.
3218 // Don't display the mark read / unread controls in this case.
3219 if ($istracked && $CFG->forum_usermarksread && isloggedin()) {
3220 $url = new moodle_url($discussionlink, array('postid'=>$post->id, 'mark'=>'unread'));
3221 $text = $str->markunread;
3223 $url->param('mark', 'read');
3224 $text = $str->markread;
3226 if ($str->displaymode == FORUM_MODE_THREADED) {
3227 $url->param('parent', $post->parent);
3229 $url->set_anchor('p'.$post->id);
3231 $commands[] = array('url'=>$url, 'text'=>$text);
3234 // Zoom in to the parent specifically
3235 if ($post->parent) {
3236 $url = new moodle_url($discussionlink);
3237 if ($str->displaymode == FORUM_MODE_THREADED) {
3238 $url->param('parent', $post->parent);
3240 $url->set_anchor('p'.$post->parent);
3242 $commands[] = array('url'=>$url, 'text'=>$str->parent);
3245 // Hack for allow to edit news posts those are not displayed yet until they are displayed
3246 $age = time() - $post->created;
3247 if (!$post->parent && $forum->type == 'news' && $discussion->timestart > time()) {
3251 if ($forum->type == 'single' and $discussion->firstpost == $post->id) {
3252 if (has_capability('moodle/course:manageactivities', $modcontext)) {
3253 // The first post in single simple is the forum description.
3254 $commands[] = array('url'=>new moodle_url('/course/modedit.php', array('update'=>$cm->id, 'sesskey'=>sesskey(), 'return'=>1)), 'text'=>$str->edit);
3256 } else if (($ownpost && $age < $CFG->maxeditingtime) || $cm->cache->caps['mod/forum:editanypost']) {
3257 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('edit'=>$post->id)), 'text'=>$str->edit);
3260 if ($cm->cache->caps['mod/forum:splitdiscussions'] && $post->parent && $forum->type != 'single') {
3261 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('prune'=>$post->id)), 'text'=>$str->prune, 'title'=>$str->pruneheading);
3264 if ($forum->type == 'single' and $discussion->firstpost == $post->id) {
3265 // Do not allow deleting of first post in single simple type.
3266 } else if (($ownpost && $age < $CFG->maxeditingtime && $cm->cache->caps['mod/forum:deleteownpost']) || $cm->cache->caps['mod/forum:deleteanypost']) {
3267 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('delete'=>$post->id)), 'text'=>$str->delete);
3271 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php#mformforum', array('reply'=>$post->id)), 'text'=>$str->reply);
3274 if ($CFG->enableportfolios && ($cm->cache->caps['mod/forum:exportpost'] || ($ownpost && $cm->cache->caps['mod/forum:exportownpost']))) {
3275 $p = array('postid' => $post->id);
3276 require_once($CFG->libdir.'/portfoliolib.php');
3277 $button = new portfolio_add_button();
3278 $button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id), 'mod_forum');
3279 if (empty($attachments)) {
3280 $button->set_formats(PORTFOLIO_FORMAT_PLAINHTML);
3282 $button->set_formats(PORTFOLIO_FORMAT_RICHHTML);
3285 $porfoliohtml = $button->to_html(PORTFOLIO_ADD_TEXT_LINK);
3286 if (!empty($porfoliohtml)) {
3287 $commands[] = $porfoliohtml;
3290 // Finished building commands
3299 $forumpostclass = ' read';
3301 $forumpostclass = ' unread';
3302 // If this is the first unread post printed then give it an anchor and id of unread.
3303 if (!$firstunreadanchorprinted) {
3304 $output .= html_writer::tag('a', '', array('id' => 'unread'));
3305 $firstunreadanchorprinted = true;
3309 // ignore trackign status if not tracked or tracked param missing
3310 $forumpostclass = '';
3314 if (empty($post->parent)) {
3315 $topicclass = ' firstpost starter';
3318 if (!empty($post->lastpost)) {
3319 $forumpostclass .= ' lastpost';
3322 $postbyuser = new stdClass;
3323 $postbyuser->post = $post->subject;
3324 $postbyuser->user = $postuser->fullname;
3325 $discussionbyuser = get_string('postbyuser', 'forum', $postbyuser);
3326 $output .= html_writer::tag('a', '', array('id'=>'p'.$post->id));
3327 $output .= html_writer::start_tag('div', array('class'=>'forumpost clearfix'.$forumpostclass.$topicclass,
3329 'aria-label' => $discussionbyuser));
3330 $output .= html_writer::start_tag('div', array('class'=>'row header clearfix'));
3331 $output .= html_writer::start_tag('div', array('class'=>'left picture'));
3332 $output .= $OUTPUT->user_picture($postuser, array('courseid'=>$course->id));
3333 $output .= html_writer::end_tag('div');
3336 $output .= html_writer::start_tag('div', array('class'=>'topic'.$topicclass));
3338 $postsubject = $post->subject;
3339 if (empty($post->subjectnoformat)) {
3340 $postsubject = format_string($postsubject);
3342 $output .= html_writer::tag('div', $postsubject, array('class'=>'subject',
3343 'role' => 'heading',
3344 'aria-level' => '2'));
3346 $by = new stdClass();
3347 $by->name = html_writer::link($postuser->profilelink, $postuser->fullname);
3348 $by->date = userdate($post->modified);
3349 $output .= html_writer::tag('div', get_string('bynameondate', 'forum', $by), array('class'=>'author',
3350 'role' => 'heading',
3351 'aria-level' => '2'));
3353 $output .= html_writer::end_tag('div'); //topic
3354 $output .= html_writer::end_tag('div'); //row
3356 $output .= html_writer::start_tag('div', array('class'=>'row maincontent clearfix'));
3357 $output .= html_writer::start_tag('div', array('class'=>'left'));
3361 $groupoutput = print_group_picture($groups, $course->id, false, true, true);
3363 if (empty($groupoutput)) {
3364 $groupoutput = ' ';
3366 $output .= html_writer::tag('div', $groupoutput, array('class'=>'grouppictures'));
3368 $output .= html_writer::end_tag('div'); //left side
3369 $output .= html_writer::start_tag('div', array('class'=>'no-overflow'));
3370 $output .= html_writer::start_tag('div', array('class'=>'content'));
3372 $options = new stdClass;
3373 $options->para = false;
3374 $options->trusted = $post->messagetrust;
3375 $options->context = $modcontext;
3377 // Prepare shortened version by filtering the text then shortening it.
3378 $postclass = 'shortenedpost';
3379 $postcontent = format_text($post->message, $post->messageformat, $options);
3380 $postcontent = shorten_text($postcontent, $CFG->forum_shortpost);
3381 $postcontent .= html_writer::link($discussionlink, get_string('readtherest', 'forum'));
3382 $postcontent .= html_writer::tag('div', '('.get_string('numwords', 'moodle', count_words($post->message)).')',
3383 array('class'=>'post-word-count'));
3385 // Prepare whole post
3386 $postclass = 'fullpost';
3387 $postcontent = format_text($post->message, $post->messageformat, $options, $course->id);
3388 if (!empty($highlight)) {
3389 $postcontent = highlight($highlight, $postcontent);
3391 if (!empty($forum->displaywordcount)) {
3392 $postcontent .= html_writer::tag('div', get_string('numwords', 'moodle', count_words($post->message)),
3393 array('class'=>'post-word-count'));
3395 $postcontent .= html_writer::tag('div', $attachedimages, array('class'=>'attachedimages'));
3398 // Output the post content
3399 $output .= html_writer::tag('div', $postcontent, array('class'=>'posting '.$postclass));
3400 $output .= html_writer::end_tag('div'); // Content
3401 $output .= html_writer::end_tag('div'); // Content mask
3402 $output .= html_writer::end_tag('div'); // Row
3404 $output .= html_writer::start_tag('div', array('class'=>'row side'));
3405 $output .= html_writer::tag('div',' ', array('class'=>'left'));
3406 $output .= html_writer::start_tag('div', array('class'=>'options clearfix'));
3408 if (!empty($attachments)) {
3409 $output .= html_writer::tag('div', $attachments, array('class' => 'attachments'));
3413 if (!empty($post->rating)) {
3414 $output .= html_writer::tag('div', $OUTPUT->render($post->rating), array('class'=>'forum-post-rating'));
3417 // Output the commands
3418 $commandhtml = array();
3419 foreach ($commands as $command) {
3420 if (is_array($command)) {
3421 $commandhtml[] = html_writer::link($command['url'], $command['text']);
3423 $commandhtml[] = $command;
3426 $output .= html_writer::tag('div', implode(' | ', $commandhtml), array('class'=>'commands'));
3428 // Output link to post if required
3429 if ($link && forum_user_can_post($forum, $discussion, $USER, $cm, $course, $modcontext)) {
3430 if ($post->replies == 1) {
3431 $replystring = get_string('repliesone', 'forum', $post->replies);
3433 $replystring = get_s