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/>.
20 * @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
21 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 defined('MOODLE_INTERNAL') || die();
26 /** Include required files */
27 require_once($CFG->libdir.'/filelib.php');
28 require_once($CFG->libdir.'/eventslib.php');
29 require_once($CFG->dirroot.'/user/selector/lib.php');
30 require_once($CFG->dirroot.'/mod/forum/post_form.php');
32 /// CONSTANTS ///////////////////////////////////////////////////////////
34 define('FORUM_MODE_FLATOLDEST', 1);
35 define('FORUM_MODE_FLATNEWEST', -1);
36 define('FORUM_MODE_THREADED', 2);
37 define('FORUM_MODE_NESTED', 3);
39 define('FORUM_CHOOSESUBSCRIBE', 0);
40 define('FORUM_FORCESUBSCRIBE', 1);
41 define('FORUM_INITIALSUBSCRIBE', 2);
42 define('FORUM_DISALLOWSUBSCRIBE',3);
44 define('FORUM_TRACKING_OFF', 0);
45 define('FORUM_TRACKING_OPTIONAL', 1);
46 define('FORUM_TRACKING_ON', 2);
48 define('FORUM_MAILED_PENDING', 0);
49 define('FORUM_MAILED_SUCCESS', 1);
50 define('FORUM_MAILED_ERROR', 2);
52 if (!defined('FORUM_CRON_USER_CACHE')) {
53 /** Defines how many full user records are cached in forum cron. */
54 define('FORUM_CRON_USER_CACHE', 5000);
57 /// STANDARD FUNCTIONS ///////////////////////////////////////////////////////////
60 * Given an object containing all the necessary data,
61 * (defined by the form in mod_form.php) this function
62 * will create a new instance and return the id number
63 * of the new instance.
65 * @param stdClass $forum add forum instance
66 * @param mod_forum_mod_form $mform
67 * @return int intance id
69 function forum_add_instance($forum, $mform = null) {
72 $forum->timemodified = time();
74 if (empty($forum->assessed)) {
78 if (empty($forum->ratingtime) or empty($forum->assessed)) {
79 $forum->assesstimestart = 0;
80 $forum->assesstimefinish = 0;
83 $forum->id = $DB->insert_record('forum', $forum);
84 $modcontext = context_module::instance($forum->coursemodule);
86 if ($forum->type == 'single') { // Create related discussion.
87 $discussion = new stdClass();
88 $discussion->course = $forum->course;
89 $discussion->forum = $forum->id;
90 $discussion->name = $forum->name;
91 $discussion->assessed = $forum->assessed;
92 $discussion->message = $forum->intro;
93 $discussion->messageformat = $forum->introformat;
94 $discussion->messagetrust = trusttext_trusted(context_course::instance($forum->course));
95 $discussion->mailnow = false;
96 $discussion->groupid = -1;
100 $discussion->id = forum_add_discussion($discussion, null, $message);
102 if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
103 // Ugly hack - we need to copy the files somehow.
104 $discussion = $DB->get_record('forum_discussions', array('id'=>$discussion->id), '*', MUST_EXIST);
105 $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
107 $options = array('subdirs'=>true); // Use the same options as intro field!
108 $post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
109 $DB->set_field('forum_posts', 'message', $post->message, array('id'=>$post->id));
113 if ($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) {
114 $users = forum_get_potential_subscribers($modcontext, 0, 'u.id, u.email');
115 foreach ($users as $user) {
116 forum_subscribe($user->id, $forum->id);
120 forum_grade_item_update($forum);
127 * Given an object containing all the necessary data,
128 * (defined by the form in mod_form.php) this function
129 * will update an existing instance with new data.
132 * @param object $forum forum instance (with magic quotes)
133 * @return bool success
135 function forum_update_instance($forum, $mform) {
136 global $DB, $OUTPUT, $USER;
138 $forum->timemodified = time();
139 $forum->id = $forum->instance;
141 if (empty($forum->assessed)) {
142 $forum->assessed = 0;
145 if (empty($forum->ratingtime) or empty($forum->assessed)) {
146 $forum->assesstimestart = 0;
147 $forum->assesstimefinish = 0;
150 $oldforum = $DB->get_record('forum', array('id'=>$forum->id));
152 // MDL-3942 - if the aggregation type or scale (i.e. max grade) changes then recalculate the grades for the entire forum
153 // if scale changes - do we need to recheck the ratings, if ratings higher than scale how do we want to respond?
154 // 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
155 if (($oldforum->assessed<>$forum->assessed) or ($oldforum->scale<>$forum->scale)) {
156 forum_update_grades($forum); // recalculate grades for the forum
159 if ($forum->type == 'single') { // Update related discussion and post.
160 $discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id), 'timemodified ASC');
161 if (!empty($discussions)) {
162 if (count($discussions) > 1) {
163 echo $OUTPUT->notification(get_string('warnformorepost', 'forum'));
165 $discussion = array_pop($discussions);
167 // try to recover by creating initial discussion - MDL-16262
168 $discussion = new stdClass();
169 $discussion->course = $forum->course;
170 $discussion->forum = $forum->id;
171 $discussion->name = $forum->name;
172 $discussion->assessed = $forum->assessed;
173 $discussion->message = $forum->intro;
174 $discussion->messageformat = $forum->introformat;
175 $discussion->messagetrust = true;
176 $discussion->mailnow = false;
177 $discussion->groupid = -1;
181 forum_add_discussion($discussion, null, $message);
183 if (! $discussion = $DB->get_record('forum_discussions', array('forum'=>$forum->id))) {
184 print_error('cannotadd', 'forum');
187 if (! $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost))) {
188 print_error('cannotfindfirstpost', 'forum');
191 $cm = get_coursemodule_from_instance('forum', $forum->id);
192 $modcontext = context_module::instance($cm->id, MUST_EXIST);
194 $post = $DB->get_record('forum_posts', array('id'=>$discussion->firstpost), '*', MUST_EXIST);
195 $post->subject = $forum->name;
196 $post->message = $forum->intro;
197 $post->messageformat = $forum->introformat;
198 $post->messagetrust = trusttext_trusted($modcontext);
199 $post->modified = $forum->timemodified;
200 $post->userid = $USER->id; // MDL-18599, so that current teacher can take ownership of activities.
202 if ($mform and $draftid = file_get_submitted_draft_itemid('introeditor')) {
203 // Ugly hack - we need to copy the files somehow.
204 $options = array('subdirs'=>true); // Use the same options as intro field!
205 $post->message = file_save_draft_area_files($draftid, $modcontext->id, 'mod_forum', 'post', $post->id, $options, $post->message);
208 $DB->update_record('forum_posts', $post);
209 $discussion->name = $forum->name;
210 $DB->update_record('forum_discussions', $discussion);
213 $DB->update_record('forum', $forum);
215 $modcontext = context_module::instance($forum->coursemodule);
216 if (($forum->forcesubscribe == FORUM_INITIALSUBSCRIBE) && ($oldforum->forcesubscribe <> $forum->forcesubscribe)) {
217 $users = forum_get_potential_subscribers($modcontext, 0, 'u.id, u.email', '');
218 foreach ($users as $user) {
219 forum_subscribe($user->id, $forum->id);
223 forum_grade_item_update($forum);
230 * Given an ID of an instance of this module,
231 * this function will permanently delete the instance
232 * and any data that depends on it.
235 * @param int $id forum instance id
236 * @return bool success
238 function forum_delete_instance($id) {
241 if (!$forum = $DB->get_record('forum', array('id'=>$id))) {
244 if (!$cm = get_coursemodule_from_instance('forum', $forum->id)) {
247 if (!$course = $DB->get_record('course', array('id'=>$cm->course))) {
251 $context = context_module::instance($cm->id);
253 // now get rid of all files
254 $fs = get_file_storage();
255 $fs->delete_area_files($context->id);
259 if ($discussions = $DB->get_records('forum_discussions', array('forum'=>$forum->id))) {
260 foreach ($discussions as $discussion) {
261 if (!forum_delete_discussion($discussion, true, $course, $cm, $forum)) {
267 if (!$DB->delete_records('forum_subscriptions', array('forum'=>$forum->id))) {
271 forum_tp_delete_read_records(-1, -1, -1, $forum->id);
273 if (!$DB->delete_records('forum', array('id'=>$forum->id))) {
277 forum_grade_item_delete($forum);
284 * Indicates API features that the forum supports.
286 * @uses FEATURE_GROUPS
287 * @uses FEATURE_GROUPINGS
288 * @uses FEATURE_GROUPMEMBERSONLY
289 * @uses FEATURE_MOD_INTRO
290 * @uses FEATURE_COMPLETION_TRACKS_VIEWS
291 * @uses FEATURE_COMPLETION_HAS_RULES
292 * @uses FEATURE_GRADE_HAS_GRADE
293 * @uses FEATURE_GRADE_OUTCOMES
294 * @param string $feature
295 * @return mixed True if yes (some features may use other values)
297 function forum_supports($feature) {
299 case FEATURE_GROUPS: return true;
300 case FEATURE_GROUPINGS: return true;
301 case FEATURE_GROUPMEMBERSONLY: return true;
302 case FEATURE_MOD_INTRO: return true;
303 case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
304 case FEATURE_COMPLETION_HAS_RULES: return true;
305 case FEATURE_GRADE_HAS_GRADE: return true;
306 case FEATURE_GRADE_OUTCOMES: return true;
307 case FEATURE_RATE: return true;
308 case FEATURE_BACKUP_MOODLE2: return true;
309 case FEATURE_SHOW_DESCRIPTION: return true;
310 case FEATURE_PLAGIARISM: return true;
312 default: return null;
318 * Obtains the automatic completion state for this forum based on any conditions
323 * @param object $course Course
324 * @param object $cm Course-module
325 * @param int $userid User ID
326 * @param bool $type Type of comparison (or/and; can be used as return value if no conditions)
327 * @return bool True if completed, false if not. (If no conditions, then return
328 * value depends on comparison type)
330 function forum_get_completion_state($course,$cm,$userid,$type) {
334 if (!($forum=$DB->get_record('forum',array('id'=>$cm->instance)))) {
335 throw new Exception("Can't find forum {$cm->instance}");
338 $result=$type; // Default return value
340 $postcountparams=array('userid'=>$userid,'forumid'=>$forum->id);
346 INNER JOIN {forum_discussions} fd ON fp.discussion=fd.id
348 fp.userid=:userid AND fd.forum=:forumid";
350 if ($forum->completiondiscussions) {
351 $value = $forum->completiondiscussions <=
352 $DB->count_records('forum_discussions',array('forum'=>$forum->id,'userid'=>$userid));
353 if ($type == COMPLETION_AND) {
354 $result = $result && $value;
356 $result = $result || $value;
359 if ($forum->completionreplies) {
360 $value = $forum->completionreplies <=
361 $DB->get_field_sql( $postcountsql.' AND fp.parent<>0',$postcountparams);
362 if ($type==COMPLETION_AND) {
363 $result = $result && $value;
365 $result = $result || $value;
368 if ($forum->completionposts) {
369 $value = $forum->completionposts <= $DB->get_field_sql($postcountsql,$postcountparams);
370 if ($type == COMPLETION_AND) {
371 $result = $result && $value;
373 $result = $result || $value;
381 * Create a message-id string to use in the custom headers of forum notification emails
383 * message-id is used by email clients to identify emails and to nest conversations
385 * @param int $postid The ID of the forum post we are notifying the user about
386 * @param int $usertoid The ID of the user being notified
387 * @param string $hostname The server's hostname
388 * @return string A unique message-id
390 function forum_get_email_message_id($postid, $usertoid, $hostname) {
391 return '<'.hash('sha256',$postid.'to'.$usertoid).'@'.$hostname.'>';
395 * Removes properties from user record that are not necessary
396 * for sending post notifications.
397 * @param stdClass $user
398 * @return void, $user parameter is modified
400 function forum_cron_minimise_user_record(stdClass $user) {
402 // We store large amount of users in one huge array,
403 // make sure we do not store info there we do not actually need
404 // in mail generation code or messaging.
406 unset($user->institution);
407 unset($user->department);
408 unset($user->address);
411 unset($user->currentlogin);
412 unset($user->description);
413 unset($user->descriptionformat);
417 * Function to be run periodically according to the moodle cron
418 * Finds all posts that have yet to be mailed out, and mails them
419 * out to all subscribers
424 * @uses CONTEXT_MODULE
425 * @uses CONTEXT_COURSE
430 function forum_cron() {
431 global $CFG, $USER, $DB;
435 // All users that are subscribed to any post that needs sending,
436 // please increase $CFG->extramemorylimit on large sites that
437 // send notifications to a large number of users.
439 $userscount = 0; // Cached user counter - count($users) in PHP is horribly slow!!!
442 $mailcount = array();
443 $errorcount = array();
446 $discussions = array();
449 $coursemodules = array();
450 $subscribedusers = array();
453 // Posts older than 2 days will not be mailed. This is to avoid the problem where
454 // cron has not been running for a long time, and then suddenly people are flooded
455 // with mail from the past few weeks or months
457 $endtime = $timenow - $CFG->maxeditingtime;
458 $starttime = $endtime - 48 * 3600; // Two days earlier
460 if ($posts = forum_get_unmailed_posts($starttime, $endtime, $timenow)) {
461 // Mark them all now as being mailed. It's unlikely but possible there
462 // might be an error later so that a post is NOT actually mailed out,
463 // but since mail isn't crucial, we can accept this risk. Doing it now
464 // prevents the risk of duplicated mails, which is a worse problem.
466 if (!forum_mark_old_posts_as_mailed($endtime)) {
467 mtrace('Errors occurred while trying to mark some posts as being mailed.');
468 return false; // Don't continue trying to mail them, in case we are in a cron loop
471 // checking post validity, and adding users to loop through later
472 foreach ($posts as $pid => $post) {
474 $discussionid = $post->discussion;
475 if (!isset($discussions[$discussionid])) {
476 if ($discussion = $DB->get_record('forum_discussions', array('id'=> $post->discussion))) {
477 $discussions[$discussionid] = $discussion;
479 mtrace('Could not find discussion '.$discussionid);
484 $forumid = $discussions[$discussionid]->forum;
485 if (!isset($forums[$forumid])) {
486 if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
487 $forums[$forumid] = $forum;
489 mtrace('Could not find forum '.$forumid);
494 $courseid = $forums[$forumid]->course;
495 if (!isset($courses[$courseid])) {
496 if ($course = $DB->get_record('course', array('id' => $courseid))) {
497 $courses[$courseid] = $course;
499 mtrace('Could not find course '.$courseid);
504 if (!isset($coursemodules[$forumid])) {
505 if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
506 $coursemodules[$forumid] = $cm;
508 mtrace('Could not find course module for forum '.$forumid);
515 // caching subscribed users of each forum
516 if (!isset($subscribedusers[$forumid])) {
517 $modcontext = context_module::instance($coursemodules[$forumid]->id);
518 if ($subusers = forum_subscribed_users($courses[$courseid], $forums[$forumid], 0, $modcontext, "u.*")) {
519 foreach ($subusers as $postuser) {
520 // this user is subscribed to this forum
521 $subscribedusers[$forumid][$postuser->id] = $postuser->id;
523 if ($userscount > FORUM_CRON_USER_CACHE) {
524 // Store minimal user info.
525 $minuser = new stdClass();
526 $minuser->id = $postuser->id;
527 $users[$postuser->id] = $minuser;
529 // Cache full user record.
530 forum_cron_minimise_user_record($postuser);
531 $users[$postuser->id] = $postuser;
540 $mailcount[$pid] = 0;
541 $errorcount[$pid] = 0;
545 if ($users && $posts) {
547 $urlinfo = parse_url($CFG->wwwroot);
548 $hostname = $urlinfo['host'];
550 foreach ($users as $userto) {
552 @set_time_limit(120); // terminate if processing of any account takes longer than 2 minutes
554 mtrace('Processing user '.$userto->id);
556 // Init user caches - we keep the cache for one cycle only,
557 // otherwise it could consume too much memory.
558 if (isset($userto->username)) {
559 $userto = clone($userto);
561 $userto = $DB->get_record('user', array('id' => $userto->id));
562 forum_cron_minimise_user_record($userto);
564 $userto->viewfullnames = array();
565 $userto->canpost = array();
566 $userto->markposts = array();
568 // set this so that the capabilities are cached, and environment matches receiving user
569 cron_setup_user($userto);
572 foreach ($coursemodules as $forumid=>$unused) {
573 $coursemodules[$forumid]->cache = new stdClass();
574 $coursemodules[$forumid]->cache->caps = array();
575 unset($coursemodules[$forumid]->uservisible);
578 foreach ($posts as $pid => $post) {
580 // Set up the environment for the post, discussion, forum, course
581 $discussion = $discussions[$post->discussion];
582 $forum = $forums[$discussion->forum];
583 $course = $courses[$forum->course];
584 $cm =& $coursemodules[$forum->id];
586 // Do some checks to see if we can bail out now
587 // Only active enrolled users are in the list of subscribers
588 if (!isset($subscribedusers[$forum->id][$userto->id])) {
589 continue; // user does not subscribe to this forum
592 // Don't send email if the forum is Q&A and the user has not posted
593 // Initial topics are still mailed
594 if ($forum->type == 'qanda' && !forum_get_user_posted_time($discussion->id, $userto->id) && $pid != $discussion->firstpost) {
595 mtrace('Did not email '.$userto->id.' because user has not posted in discussion');
599 // Get info about the sending user
600 if (array_key_exists($post->userid, $users)) { // we might know him/her already
601 $userfrom = $users[$post->userid];
602 if (!isset($userfrom->idnumber)) {
603 // Minimalised user info, fetch full record.
604 $userfrom = $DB->get_record('user', array('id' => $userfrom->id));
605 forum_cron_minimise_user_record($userfrom);
608 } else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
609 forum_cron_minimise_user_record($userfrom);
610 // Fetch only once if possible, we can add it to user list, it will be skipped anyway.
611 if ($userscount <= FORUM_CRON_USER_CACHE) {
613 $users[$userfrom->id] = $userfrom;
617 mtrace('Could not find user '.$post->userid);
621 //if we want to check that userto and userfrom are not the same person this is probably the spot to do it
623 // setup global $COURSE properly - needed for roles and languages
624 cron_setup_user($userto, $course);
627 if (!isset($userto->viewfullnames[$forum->id])) {
628 $modcontext = context_module::instance($cm->id);
629 $userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
631 if (!isset($userto->canpost[$discussion->id])) {
632 $modcontext = context_module::instance($cm->id);
633 $userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
635 if (!isset($userfrom->groups[$forum->id])) {
636 if (!isset($userfrom->groups)) {
637 $userfrom->groups = array();
638 if (isset($users[$userfrom->id])) {
639 $users[$userfrom->id]->groups = array();
642 $userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
643 if (isset($users[$userfrom->id])) {
644 $users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
648 // Make sure groups allow this user to see this email
649 if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) { // Groups are being used
650 if (!groups_group_exists($discussion->groupid)) { // Can't find group
651 continue; // Be safe and don't send it to anyone
654 if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $modcontext)) {
655 // do not send posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS
660 // Make sure we're allowed to see it...
661 if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
662 mtrace('user '.$userto->id. ' can not see '.$post->id);
666 // OK so we need to send the email.
668 // Does the user want this post in a digest? If so postpone it for now.
669 if ($userto->maildigest > 0) {
670 // This user wants the mails to be in digest form
671 $queue = new stdClass();
672 $queue->userid = $userto->id;
673 $queue->discussionid = $discussion->id;
674 $queue->postid = $post->id;
675 $queue->timemodified = $post->created;
676 $DB->insert_record('forum_queue', $queue);
681 // Prepare to actually send the post now, and build up the content
683 $cleanforumname = str_replace('"', "'", strip_tags(format_string($forum->name)));
685 $userfrom->customheaders = array ( // Headers to make emails easier to track
687 'List-Id: "'.$cleanforumname.'" <moodleforum'.$forum->id.'@'.$hostname.'>',
688 'List-Help: '.$CFG->wwwroot.'/mod/forum/view.php?f='.$forum->id,
689 'Message-ID: '.forum_get_email_message_id($post->id, $userto->id, $hostname),
690 'X-Course-Id: '.$course->id,
691 'X-Course-Name: '.format_string($course->fullname, true)
694 if ($post->parent) { // This post is a reply, so add headers for threading (see MDL-22551)
695 $userfrom->customheaders[] = 'In-Reply-To: '.forum_get_email_message_id($post->parent, $userto->id, $hostname);
696 $userfrom->customheaders[] = 'References: '.forum_get_email_message_id($post->parent, $userto->id, $hostname);
699 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
701 $postsubject = html_to_text("$shortname: ".format_string($post->subject, true));
702 $posttext = forum_make_mail_text($course, $cm, $forum, $discussion, $post, $userfrom, $userto);
703 $posthtml = forum_make_mail_html($course, $cm, $forum, $discussion, $post, $userfrom, $userto);
705 // Send the post now!
707 mtrace('Sending ', '');
709 $eventdata = new stdClass();
710 $eventdata->component = 'mod_forum';
711 $eventdata->name = 'posts';
712 $eventdata->userfrom = $userfrom;
713 $eventdata->userto = $userto;
714 $eventdata->subject = $postsubject;
715 $eventdata->fullmessage = $posttext;
716 $eventdata->fullmessageformat = FORMAT_PLAIN;
717 $eventdata->fullmessagehtml = $posthtml;
718 $eventdata->notification = 1;
720 // If forum_replytouser is not set then send mail using the noreplyaddress.
721 if (empty($CFG->forum_replytouser)) {
722 // Clone userfrom as it is referenced by $users.
723 $cloneduserfrom = clone($userfrom);
724 $cloneduserfrom->email = $CFG->noreplyaddress;
725 $eventdata->userfrom = $cloneduserfrom;
728 $smallmessagestrings = new stdClass();
729 $smallmessagestrings->user = fullname($userfrom);
730 $smallmessagestrings->forumname = "$shortname: ".format_string($forum->name,true).": ".$discussion->name;
731 $smallmessagestrings->message = $post->message;
732 //make sure strings are in message recipients language
733 $eventdata->smallmessage = get_string_manager()->get_string('smallmessage', 'forum', $smallmessagestrings, $userto->lang);
735 $eventdata->contexturl = "{$CFG->wwwroot}/mod/forum/discuss.php?d={$discussion->id}#p{$post->id}";
736 $eventdata->contexturlname = $discussion->name;
738 $mailresult = message_send($eventdata);
740 mtrace("Error: mod/forum/lib.php forum_cron(): Could not send out mail for id $post->id to user $userto->id".
741 " ($userto->email) .. not trying again.");
742 add_to_log($course->id, 'forum', 'mail error', "discuss.php?d=$discussion->id#p$post->id",
743 substr(format_string($post->subject,true),0,30), $cm->id, $userto->id);
744 $errorcount[$post->id]++;
746 $mailcount[$post->id]++;
748 // Mark post as read if forum_usermarksread is set off
749 if (!$CFG->forum_usermarksread) {
750 $userto->markposts[$post->id] = $post->id;
754 mtrace('post '.$post->id. ': '.$post->subject);
757 // mark processed posts as read
758 forum_tp_mark_posts_read($userto, $userto->markposts);
764 foreach ($posts as $post) {
765 mtrace($mailcount[$post->id]." users were sent post $post->id, '$post->subject'");
766 if ($errorcount[$post->id]) {
767 $DB->set_field('forum_posts', 'mailed', FORUM_MAILED_ERROR, array('id' => $post->id));
772 // release some memory
773 unset($subscribedusers);
779 $sitetimezone = $CFG->timezone;
781 // Now see if there are any digest mails waiting to be sent, and if we should send them
783 mtrace('Starting digest processing...');
785 @set_time_limit(300); // terminate if not able to fetch all digests in 5 minutes
787 if (!isset($CFG->digestmailtimelast)) { // To catch the first time
788 set_config('digestmailtimelast', 0);
792 $digesttime = usergetmidnight($timenow, $sitetimezone) + ($CFG->digestmailtime * 3600);
794 // Delete any really old ones (normally there shouldn't be any)
795 $weekago = $timenow - (7 * 24 * 3600);
796 $DB->delete_records_select('forum_queue', "timemodified < ?", array($weekago));
797 mtrace ('Cleaned old digest records');
799 if ($CFG->digestmailtimelast < $digesttime and $timenow > $digesttime) {
801 mtrace('Sending forum digests: '.userdate($timenow, '', $sitetimezone));
803 $digestposts_rs = $DB->get_recordset_select('forum_queue', "timemodified < ?", array($digesttime));
805 if ($digestposts_rs->valid()) {
807 // We have work to do
810 //caches - reuse the those filled before too
811 $discussionposts = array();
812 $userdiscussions = array();
814 foreach ($digestposts_rs as $digestpost) {
815 if (!isset($posts[$digestpost->postid])) {
816 if ($post = $DB->get_record('forum_posts', array('id' => $digestpost->postid))) {
817 $posts[$digestpost->postid] = $post;
822 $discussionid = $digestpost->discussionid;
823 if (!isset($discussions[$discussionid])) {
824 if ($discussion = $DB->get_record('forum_discussions', array('id' => $discussionid))) {
825 $discussions[$discussionid] = $discussion;
830 $forumid = $discussions[$discussionid]->forum;
831 if (!isset($forums[$forumid])) {
832 if ($forum = $DB->get_record('forum', array('id' => $forumid))) {
833 $forums[$forumid] = $forum;
839 $courseid = $forums[$forumid]->course;
840 if (!isset($courses[$courseid])) {
841 if ($course = $DB->get_record('course', array('id' => $courseid))) {
842 $courses[$courseid] = $course;
848 if (!isset($coursemodules[$forumid])) {
849 if ($cm = get_coursemodule_from_instance('forum', $forumid, $courseid)) {
850 $coursemodules[$forumid] = $cm;
855 $userdiscussions[$digestpost->userid][$digestpost->discussionid] = $digestpost->discussionid;
856 $discussionposts[$digestpost->discussionid][$digestpost->postid] = $digestpost->postid;
858 $digestposts_rs->close(); /// Finished iteration, let's close the resultset
860 // Data collected, start sending out emails to each user
861 foreach ($userdiscussions as $userid => $thesediscussions) {
863 @set_time_limit(120); // terminate if processing of any account takes longer than 2 minutes
867 mtrace(get_string('processingdigest', 'forum', $userid), '... ');
869 // First of all delete all the queue entries for this user
870 $DB->delete_records_select('forum_queue', "userid = ? AND timemodified < ?", array($userid, $digesttime));
872 // Init user caches - we keep the cache for one cycle only,
873 // otherwise it would unnecessarily consume memory.
874 if (array_key_exists($userid, $users) and isset($users[$userid]->username)) {
875 $userto = clone($users[$userid]);
877 $userto = $DB->get_record('user', array('id' => $userid));
878 forum_cron_minimise_user_record($userto);
880 $userto->viewfullnames = array();
881 $userto->canpost = array();
882 $userto->markposts = array();
884 // Override the language and timezone of the "current" user, so that
885 // mail is customised for the receiver.
886 cron_setup_user($userto);
888 $postsubject = get_string('digestmailsubject', 'forum', format_string($site->shortname, true));
890 $headerdata = new stdClass();
891 $headerdata->sitename = format_string($site->fullname, true);
892 $headerdata->userprefs = $CFG->wwwroot.'/user/edit.php?id='.$userid.'&course='.$site->id;
894 $posttext = get_string('digestmailheader', 'forum', $headerdata)."\n\n";
895 $headerdata->userprefs = '<a target="_blank" href="'.$headerdata->userprefs.'">'.get_string('digestmailprefs', 'forum').'</a>';
897 $posthtml = "<head>";
898 /* foreach ($CFG->stylesheets as $stylesheet) {
900 $posthtml .= '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'" />'."\n";
902 $posthtml .= "</head>\n<body id=\"email\">\n";
903 $posthtml .= '<p>'.get_string('digestmailheader', 'forum', $headerdata).'</p><br /><hr size="1" noshade="noshade" />';
905 foreach ($thesediscussions as $discussionid) {
907 @set_time_limit(120); // to be reset for each post
909 $discussion = $discussions[$discussionid];
910 $forum = $forums[$discussion->forum];
911 $course = $courses[$forum->course];
912 $cm = $coursemodules[$forum->id];
915 cron_setup_user($userto, $course);
918 if (!isset($userto->viewfullnames[$forum->id])) {
919 $modcontext = context_module::instance($cm->id);
920 $userto->viewfullnames[$forum->id] = has_capability('moodle/site:viewfullnames', $modcontext);
922 if (!isset($userto->canpost[$discussion->id])) {
923 $modcontext = context_module::instance($cm->id);
924 $userto->canpost[$discussion->id] = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
927 $strforums = get_string('forums', 'forum');
928 $canunsubscribe = ! forum_is_forcesubscribed($forum);
929 $canreply = $userto->canpost[$discussion->id];
930 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
932 $posttext .= "\n \n";
933 $posttext .= '=====================================================================';
934 $posttext .= "\n \n";
935 $posttext .= "$shortname -> $strforums -> ".format_string($forum->name,true);
936 if ($discussion->name != $forum->name) {
937 $posttext .= " -> ".format_string($discussion->name,true);
940 $posttext .= $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
943 $posthtml .= "<p><font face=\"sans-serif\">".
944 "<a target=\"_blank\" href=\"$CFG->wwwroot/course/view.php?id=$course->id\">$shortname</a> -> ".
945 "<a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/index.php?id=$course->id\">$strforums</a> -> ".
946 "<a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/view.php?f=$forum->id\">".format_string($forum->name,true)."</a>";
947 if ($discussion->name == $forum->name) {
948 $posthtml .= "</font></p>";
950 $posthtml .= " -> <a target=\"_blank\" href=\"$CFG->wwwroot/mod/forum/discuss.php?d=$discussion->id\">".format_string($discussion->name,true)."</a></font></p>";
954 $postsarray = $discussionposts[$discussionid];
957 foreach ($postsarray as $postid) {
958 $post = $posts[$postid];
960 if (array_key_exists($post->userid, $users)) { // we might know him/her already
961 $userfrom = $users[$post->userid];
962 if (!isset($userfrom->idnumber)) {
963 $userfrom = $DB->get_record('user', array('id' => $userfrom->id));
964 forum_cron_minimise_user_record($userfrom);
967 } else if ($userfrom = $DB->get_record('user', array('id' => $post->userid))) {
968 forum_cron_minimise_user_record($userfrom);
969 if ($userscount <= FORUM_CRON_USER_CACHE) {
971 $users[$userfrom->id] = $userfrom;
975 mtrace('Could not find user '.$post->userid);
979 if (!isset($userfrom->groups[$forum->id])) {
980 if (!isset($userfrom->groups)) {
981 $userfrom->groups = array();
982 if (isset($users[$userfrom->id])) {
983 $users[$userfrom->id]->groups = array();
986 $userfrom->groups[$forum->id] = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
987 if (isset($users[$userfrom->id])) {
988 $users[$userfrom->id]->groups[$forum->id] = $userfrom->groups[$forum->id];
992 $userfrom->customheaders = array ("Precedence: Bulk");
994 if ($userto->maildigest == 2) {
995 // Subjects and link only
997 $posttext .= $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
998 $by = new stdClass();
999 $by->name = fullname($userfrom);
1000 $by->date = userdate($post->modified);
1001 $posttext .= "\n".format_string($post->subject,true).' '.get_string("bynameondate", "forum", $by);
1002 $posttext .= "\n---------------------------------------------------------------------";
1004 $by->name = "<a target=\"_blank\" href=\"$CFG->wwwroot/user/view.php?id=$userfrom->id&course=$course->id\">$by->name</a>";
1005 $posthtml .= '<div><a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id.'#p'.$post->id.'">'.format_string($post->subject,true).'</a> '.get_string("bynameondate", "forum", $by).'</div>';
1008 // The full treatment
1009 $posttext .= forum_make_mail_text($course, $cm, $forum, $discussion, $post, $userfrom, $userto, true);
1010 $posthtml .= forum_make_mail_post($course, $cm, $forum, $discussion, $post, $userfrom, $userto, false, $canreply, true, false);
1012 // Create an array of postid's for this user to mark as read.
1013 if (!$CFG->forum_usermarksread) {
1014 $userto->markposts[$post->id] = $post->id;
1018 if ($canunsubscribe) {
1019 $posthtml .= "\n<div class='mdl-right'><font size=\"1\"><a href=\"$CFG->wwwroot/mod/forum/subscribe.php?id=$forum->id\">".get_string("unsubscribe", "forum")."</a></font></div>";
1021 $posthtml .= "\n<div class='mdl-right'><font size=\"1\">".get_string("everyoneissubscribed", "forum")."</font></div>";
1023 $posthtml .= '<hr size="1" noshade="noshade" /></p>';
1025 $posthtml .= '</body>';
1027 if (empty($userto->mailformat) || $userto->mailformat != 1) {
1028 // This user DOESN'T want to receive HTML
1032 $attachment = $attachname='';
1033 // Directly email forum digests rather than sending them via messaging, use the
1034 // site shortname as 'from name', the noreply address will be used by email_to_user.
1035 $mailresult = email_to_user($userto, $site->shortname, $postsubject, $posttext, $posthtml, $attachment, $attachname);
1039 echo "Error: mod/forum/cron.php: Could not send out digest mail to user $userto->id ($userto->email)... not trying again.\n";
1040 add_to_log($course->id, 'forum', 'mail digest error', '', '', $cm->id, $userto->id);
1045 // Mark post as read if forum_usermarksread is set off
1046 forum_tp_mark_posts_read($userto, $userto->markposts);
1050 /// We have finishied all digest emails, update $CFG->digestmailtimelast
1051 set_config('digestmailtimelast', $timenow);
1056 if (!empty($usermailcount)) {
1057 mtrace(get_string('digestsentusers', 'forum', $usermailcount));
1060 if (!empty($CFG->forum_lastreadclean)) {
1062 if ($CFG->forum_lastreadclean + (24*3600) < $timenow) {
1063 set_config('forum_lastreadclean', $timenow);
1064 mtrace('Removing old forum read tracking info...');
1065 forum_tp_clean_read_records();
1068 set_config('forum_lastreadclean', time());
1076 * Builds and returns the body of the email notification in plain text.
1080 * @uses CONTEXT_MODULE
1081 * @param object $course
1083 * @param object $forum
1084 * @param object $discussion
1085 * @param object $post
1086 * @param object $userfrom
1087 * @param object $userto
1088 * @param boolean $bare
1089 * @return string The email body in plain text format.
1091 function forum_make_mail_text($course, $cm, $forum, $discussion, $post, $userfrom, $userto, $bare = false) {
1094 $modcontext = context_module::instance($cm->id);
1096 if (!isset($userto->viewfullnames[$forum->id])) {
1097 $viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
1099 $viewfullnames = $userto->viewfullnames[$forum->id];
1102 if (!isset($userto->canpost[$discussion->id])) {
1103 $canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course, $modcontext);
1105 $canreply = $userto->canpost[$discussion->id];
1109 $by->name = fullname($userfrom, $viewfullnames);
1110 $by->date = userdate($post->modified, "", $userto->timezone);
1112 $strbynameondate = get_string('bynameondate', 'forum', $by);
1114 $strforums = get_string('forums', 'forum');
1116 $canunsubscribe = ! forum_is_forcesubscribed($forum);
1121 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
1122 $posttext = "$shortname -> $strforums -> ".format_string($forum->name,true);
1124 if ($discussion->name != $forum->name) {
1125 $posttext .= " -> ".format_string($discussion->name,true);
1129 // add absolute file links
1130 $post->message = file_rewrite_pluginfile_urls($post->message, 'pluginfile.php', $modcontext->id, 'mod_forum', 'post', $post->id);
1133 $posttext .= $CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id;
1134 $posttext .= "\n---------------------------------------------------------------------\n";
1135 $posttext .= format_string($post->subject,true);
1137 $posttext .= " ($CFG->wwwroot/mod/forum/discuss.php?d=$discussion->id#p$post->id)";
1139 $posttext .= "\n".$strbynameondate."\n";
1140 $posttext .= "---------------------------------------------------------------------\n";
1141 $posttext .= format_text_email($post->message, $post->messageformat);
1142 $posttext .= "\n\n";
1143 $posttext .= forum_print_attachments($post, $cm, "text");
1145 if (!$bare && $canreply) {
1146 $posttext .= "---------------------------------------------------------------------\n";
1147 $posttext .= get_string("postmailinfo", "forum", $shortname)."\n";
1148 $posttext .= "$CFG->wwwroot/mod/forum/post.php?reply=$post->id\n";
1150 if (!$bare && $canunsubscribe) {
1151 $posttext .= "\n---------------------------------------------------------------------\n";
1152 $posttext .= get_string("unsubscribe", "forum");
1153 $posttext .= ": $CFG->wwwroot/mod/forum/subscribe.php?id=$forum->id\n";
1160 * Builds and returns the body of the email notification in html format.
1163 * @param object $course
1165 * @param object $forum
1166 * @param object $discussion
1167 * @param object $post
1168 * @param object $userfrom
1169 * @param object $userto
1170 * @return string The email text in HTML format
1172 function forum_make_mail_html($course, $cm, $forum, $discussion, $post, $userfrom, $userto) {
1175 if ($userto->mailformat != 1) { // Needs to be HTML
1179 if (!isset($userto->canpost[$discussion->id])) {
1180 $canreply = forum_user_can_post($forum, $discussion, $userto, $cm, $course);
1182 $canreply = $userto->canpost[$discussion->id];
1185 $strforums = get_string('forums', 'forum');
1186 $canunsubscribe = ! forum_is_forcesubscribed($forum);
1187 $shortname = format_string($course->shortname, true, array('context' => context_course::instance($course->id)));
1189 $posthtml = '<head>';
1190 /* foreach ($CFG->stylesheets as $stylesheet) {
1192 $posthtml .= '<link rel="stylesheet" type="text/css" href="'.$stylesheet.'" />'."\n";
1194 $posthtml .= '</head>';
1195 $posthtml .= "\n<body id=\"email\">\n\n";
1197 $posthtml .= '<div class="navbar">'.
1198 '<a target="_blank" href="'.$CFG->wwwroot.'/course/view.php?id='.$course->id.'">'.$shortname.'</a> » '.
1199 '<a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/index.php?id='.$course->id.'">'.$strforums.'</a> » '.
1200 '<a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/view.php?f='.$forum->id.'">'.format_string($forum->name,true).'</a>';
1201 if ($discussion->name == $forum->name) {
1202 $posthtml .= '</div>';
1204 $posthtml .= ' » <a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$discussion->id.'">'.
1205 format_string($discussion->name,true).'</a></div>';
1207 $posthtml .= forum_make_mail_post($course, $cm, $forum, $discussion, $post, $userfrom, $userto, false, $canreply, true, false);
1209 if ($canunsubscribe) {
1210 $posthtml .= '<hr /><div class="mdl-align unsubscribelink">
1211 <a href="'.$CFG->wwwroot.'/mod/forum/subscribe.php?id='.$forum->id.'">'.get_string('unsubscribe', 'forum').'</a>
1212 <a href="'.$CFG->wwwroot.'/mod/forum/unsubscribeall.php">'.get_string('unsubscribeall', 'forum').'</a></div>';
1215 $posthtml .= '</body>';
1223 * @param object $course
1224 * @param object $user
1225 * @param object $mod TODO this is not used in this function, refactor
1226 * @param object $forum
1227 * @return object A standard object with 2 variables: info (number of posts for this user) and time (last modified)
1229 function forum_user_outline($course, $user, $mod, $forum) {
1231 require_once("$CFG->libdir/gradelib.php");
1232 $grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
1233 if (empty($grades->items[0]->grades)) {
1236 $grade = reset($grades->items[0]->grades);
1239 $count = forum_count_user_posts($forum->id, $user->id);
1241 if ($count && $count->postcount > 0) {
1242 $result = new stdClass();
1243 $result->info = get_string("numposts", "forum", $count->postcount);
1244 $result->time = $count->lastpost;
1246 $result->info .= ', ' . get_string('grade') . ': ' . $grade->str_long_grade;
1249 } else if ($grade) {
1250 $result = new stdClass();
1251 $result->info = get_string('grade') . ': ' . $grade->str_long_grade;
1253 //datesubmitted == time created. dategraded == time modified or time overridden
1254 //if grade was last modified by the user themselves use date graded. Otherwise use date submitted
1255 //TODO: move this copied & pasted code somewhere in the grades API. See MDL-26704
1256 if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
1257 $result->time = $grade->dategraded;
1259 $result->time = $grade->datesubmitted;
1271 * @param object $coure
1272 * @param object $user
1273 * @param object $mod
1274 * @param object $forum
1276 function forum_user_complete($course, $user, $mod, $forum) {
1277 global $CFG,$USER, $OUTPUT;
1278 require_once("$CFG->libdir/gradelib.php");
1280 $grades = grade_get_grades($course->id, 'mod', 'forum', $forum->id, $user->id);
1281 if (!empty($grades->items[0]->grades)) {
1282 $grade = reset($grades->items[0]->grades);
1283 echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
1284 if ($grade->str_feedback) {
1285 echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
1289 if ($posts = forum_get_user_posts($forum->id, $user->id)) {
1291 if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $course->id)) {
1292 print_error('invalidcoursemodule');
1294 $discussions = forum_get_user_involved_discussions($forum->id, $user->id);
1296 foreach ($posts as $post) {
1297 if (!isset($discussions[$post->discussion])) {
1300 $discussion = $discussions[$post->discussion];
1302 forum_print_post($post, $discussion, $forum, $cm, $course, false, false, false);
1305 echo "<p>".get_string("noposts", "forum")."</p>";
1318 * @param array $courses
1319 * @param array $htmlarray
1321 function forum_print_overview($courses,&$htmlarray) {
1322 global $USER, $CFG, $DB, $SESSION;
1324 if (empty($courses) || !is_array($courses) || count($courses) == 0) {
1328 if (!$forums = get_all_instances_in_courses('forum',$courses)) {
1332 // Courses to search for new posts
1333 $coursessqls = array();
1335 foreach ($courses as $course) {
1337 // If the user has never entered into the course all posts are pending
1338 if ($course->lastaccess == 0) {
1339 $coursessqls[] = '(f.course = ?)';
1340 $params[] = $course->id;
1342 // Only posts created after the course last access
1344 $coursessqls[] = '(f.course = ? AND p.created > ?)';
1345 $params[] = $course->id;
1346 $params[] = $course->lastaccess;
1349 $params[] = $USER->id;
1350 $coursessql = implode(' OR ', $coursessqls);
1352 $sql = "SELECT f.id, COUNT(*) as count "
1354 .'JOIN {forum_discussions} d ON d.forum = f.id '
1355 .'JOIN {forum_posts} p ON p.discussion = d.id '
1356 ."WHERE ($coursessql) "
1357 .'AND p.userid != ? '
1360 if (!$new = $DB->get_records_sql($sql, $params)) {
1361 $new = array(); // avoid warnings
1364 // also get all forum tracking stuff ONCE.
1365 $trackingforums = array();
1366 foreach ($forums as $forum) {
1367 if (forum_tp_can_track_forums($forum)) {
1368 $trackingforums[$forum->id] = $forum;
1372 if (count($trackingforums) > 0) {
1373 $cutoffdate = isset($CFG->forum_oldpostdays) ? (time() - ($CFG->forum_oldpostdays*24*60*60)) : 0;
1374 $sql = 'SELECT d.forum,d.course,COUNT(p.id) AS count '.
1375 ' FROM {forum_posts} p '.
1376 ' JOIN {forum_discussions} d ON p.discussion = d.id '.
1377 ' LEFT JOIN {forum_read} r ON r.postid = p.id AND r.userid = ? WHERE (';
1378 $params = array($USER->id);
1380 foreach ($trackingforums as $track) {
1381 $sql .= '(d.forum = ? AND (d.groupid = -1 OR d.groupid = 0 OR d.groupid = ?)) OR ';
1382 $params[] = $track->id;
1383 if (isset($SESSION->currentgroup[$track->course])) {
1384 $groupid = $SESSION->currentgroup[$track->course];
1386 // get first groupid
1387 $groupids = groups_get_all_groups($track->course, $USER->id);
1390 $groupid = key($groupids);
1391 $SESSION->currentgroup[$track->course] = $groupid;
1397 $params[] = $groupid;
1399 $sql = substr($sql,0,-3); // take off the last OR
1400 $sql .= ') AND p.modified >= ? AND r.id is NULL GROUP BY d.forum,d.course';
1401 $params[] = $cutoffdate;
1403 if (!$unread = $DB->get_records_sql($sql, $params)) {
1410 if (empty($unread) and empty($new)) {
1414 $strforum = get_string('modulename','forum');
1416 foreach ($forums as $forum) {
1420 $showunread = false;
1421 // either we have something from logs, or trackposts, or nothing.
1422 if (array_key_exists($forum->id, $new) && !empty($new[$forum->id])) {
1423 $count = $new[$forum->id]->count;
1425 if (array_key_exists($forum->id,$unread)) {
1426 $thisunread = $unread[$forum->id]->count;
1429 if ($count > 0 || $thisunread > 0) {
1430 $str .= '<div class="overview forum"><div class="name">'.$strforum.': <a title="'.$strforum.'" href="'.$CFG->wwwroot.'/mod/forum/view.php?f='.$forum->id.'">'.
1431 $forum->name.'</a></div>';
1432 $str .= '<div class="info"><span class="postsincelogin">';
1433 $str .= get_string('overviewnumpostssince', 'forum', $count)."</span>";
1434 if (!empty($showunread)) {
1435 $str .= '<div class="unreadposts">'.get_string('overviewnumunread', 'forum', $thisunread).'</div>';
1437 $str .= '</div></div>';
1440 if (!array_key_exists($forum->course,$htmlarray)) {
1441 $htmlarray[$forum->course] = array();
1443 if (!array_key_exists('forum',$htmlarray[$forum->course])) {
1444 $htmlarray[$forum->course]['forum'] = ''; // initialize, avoid warnings
1446 $htmlarray[$forum->course]['forum'] .= $str;
1452 * Given a course and a date, prints a summary of all the new
1453 * messages posted in the course since that date
1458 * @uses CONTEXT_MODULE
1459 * @uses VISIBLEGROUPS
1460 * @param object $course
1461 * @param bool $viewfullnames capability
1462 * @param int $timestart
1463 * @return bool success
1465 function forum_print_recent_activity($course, $viewfullnames, $timestart) {
1466 global $CFG, $USER, $DB, $OUTPUT;
1468 // do not use log table if possible, it may be huge and is expensive to join with other tables
1470 if (!$posts = $DB->get_records_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid,
1471 d.timestart, d.timeend, d.userid AS duserid,
1472 u.firstname, u.lastname, u.email, u.picture
1473 FROM {forum_posts} p
1474 JOIN {forum_discussions} d ON d.id = p.discussion
1475 JOIN {forum} f ON f.id = d.forum
1476 JOIN {user} u ON u.id = p.userid
1477 WHERE p.created > ? AND f.course = ?
1478 ORDER BY p.id ASC", array($timestart, $course->id))) { // order by initial posting date
1482 $modinfo = get_fast_modinfo($course);
1484 $groupmodes = array();
1487 $strftimerecent = get_string('strftimerecent');
1489 $printposts = array();
1490 foreach ($posts as $post) {
1491 if (!isset($modinfo->instances['forum'][$post->forum])) {
1495 $cm = $modinfo->instances['forum'][$post->forum];
1496 if (!$cm->uservisible) {
1499 $context = context_module::instance($cm->id);
1501 if (!has_capability('mod/forum:viewdiscussion', $context)) {
1505 if (!empty($CFG->forum_enabletimedposts) and $USER->id != $post->duserid
1506 and (($post->timestart > 0 and $post->timestart > time()) or ($post->timeend > 0 and $post->timeend < time()))) {
1507 if (!has_capability('mod/forum:viewhiddentimedposts', $context)) {
1512 $groupmode = groups_get_activity_groupmode($cm, $course);
1515 if ($post->groupid == -1 or $groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $context)) {
1516 // oki (Open discussions have groupid -1)
1519 if (isguestuser()) {
1524 if (is_null($modinfo->groups)) {
1525 $modinfo->groups = groups_get_user_groups($course->id); // load all my groups and cache it in modinfo
1528 if (!in_array($post->groupid, $modinfo->get_groups($cm->groupingid))) {
1534 $printposts[] = $post;
1542 echo $OUTPUT->heading(get_string('newforumposts', 'forum').':', 3);
1543 echo "\n<ul class='unlist'>\n";
1545 foreach ($printposts as $post) {
1546 $subjectclass = empty($post->parent) ? ' bold' : '';
1548 echo '<li><div class="head">'.
1549 '<div class="date">'.userdate($post->modified, $strftimerecent).'</div>'.
1550 '<div class="name">'.fullname($post, $viewfullnames).'</div>'.
1552 echo '<div class="info'.$subjectclass.'">';
1553 if (empty($post->parent)) {
1554 echo '"<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">';
1556 echo '"<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'&parent='.$post->parent.'#p'.$post->id.'">';
1558 $post->subject = break_up_long_words(format_string($post->subject, true));
1559 echo $post->subject;
1560 echo "</a>\"</div></li>\n";
1569 * Return grade for given user or all users.
1573 * @param object $forum
1574 * @param int $userid optional user id, 0 means all users
1575 * @return array array of grades, false if none
1577 function forum_get_user_grades($forum, $userid = 0) {
1580 require_once($CFG->dirroot.'/rating/lib.php');
1582 $ratingoptions = new stdClass;
1583 $ratingoptions->component = 'mod_forum';
1584 $ratingoptions->ratingarea = 'post';
1586 //need these to work backwards to get a context id. Is there a better way to get contextid from a module instance?
1587 $ratingoptions->modulename = 'forum';
1588 $ratingoptions->moduleid = $forum->id;
1589 $ratingoptions->userid = $userid;
1590 $ratingoptions->aggregationmethod = $forum->assessed;
1591 $ratingoptions->scaleid = $forum->scale;
1592 $ratingoptions->itemtable = 'forum_posts';
1593 $ratingoptions->itemtableusercolumn = 'userid';
1595 $rm = new rating_manager();
1596 return $rm->get_user_grades($ratingoptions);
1600 * Update activity grades
1603 * @param object $forum
1604 * @param int $userid specific user only, 0 means all
1605 * @param boolean $nullifnone return null if grade does not exist
1608 function forum_update_grades($forum, $userid=0, $nullifnone=true) {
1610 require_once($CFG->libdir.'/gradelib.php');
1612 if (!$forum->assessed) {
1613 forum_grade_item_update($forum);
1615 } else if ($grades = forum_get_user_grades($forum, $userid)) {
1616 forum_grade_item_update($forum, $grades);
1618 } else if ($userid and $nullifnone) {
1619 $grade = new stdClass();
1620 $grade->userid = $userid;
1621 $grade->rawgrade = NULL;
1622 forum_grade_item_update($forum, $grade);
1625 forum_grade_item_update($forum);
1630 * Update all grades in gradebook.
1633 function forum_upgrade_grades() {
1636 $sql = "SELECT COUNT('x')
1637 FROM {forum} f, {course_modules} cm, {modules} m
1638 WHERE m.name='forum' AND m.id=cm.module AND cm.instance=f.id";
1639 $count = $DB->count_records_sql($sql);
1641 $sql = "SELECT f.*, cm.idnumber AS cmidnumber, f.course AS courseid
1642 FROM {forum} f, {course_modules} cm, {modules} m
1643 WHERE m.name='forum' AND m.id=cm.module AND cm.instance=f.id";
1644 $rs = $DB->get_recordset_sql($sql);
1646 $pbar = new progress_bar('forumupgradegrades', 500, true);
1648 foreach ($rs as $forum) {
1650 upgrade_set_timeout(60*5); // set up timeout, may also abort execution
1651 forum_update_grades($forum, 0, false);
1652 $pbar->update($i, $count, "Updating Forum grades ($i/$count).");
1659 * Create/update grade item for given forum
1662 * @uses GRADE_TYPE_NONE
1663 * @uses GRADE_TYPE_VALUE
1664 * @uses GRADE_TYPE_SCALE
1665 * @param stdClass $forum Forum object with extra cmidnumber
1666 * @param mixed $grades Optional array/object of grade(s); 'reset' means reset grades in gradebook
1667 * @return int 0 if ok
1669 function forum_grade_item_update($forum, $grades=NULL) {
1671 if (!function_exists('grade_update')) { //workaround for buggy PHP versions
1672 require_once($CFG->libdir.'/gradelib.php');
1675 $params = array('itemname'=>$forum->name, 'idnumber'=>$forum->cmidnumber);
1677 if (!$forum->assessed or $forum->scale == 0) {
1678 $params['gradetype'] = GRADE_TYPE_NONE;
1680 } else if ($forum->scale > 0) {
1681 $params['gradetype'] = GRADE_TYPE_VALUE;
1682 $params['grademax'] = $forum->scale;
1683 $params['grademin'] = 0;
1685 } else if ($forum->scale < 0) {
1686 $params['gradetype'] = GRADE_TYPE_SCALE;
1687 $params['scaleid'] = -$forum->scale;
1690 if ($grades === 'reset') {
1691 $params['reset'] = true;
1695 return grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, $grades, $params);
1699 * Delete grade item for given forum
1702 * @param stdClass $forum Forum object
1703 * @return grade_item
1705 function forum_grade_item_delete($forum) {
1707 require_once($CFG->libdir.'/gradelib.php');
1709 return grade_update('mod/forum', $forum->course, 'mod', 'forum', $forum->id, 0, NULL, array('deleted'=>1));
1714 * This function returns if a scale is being used by one forum
1717 * @param int $forumid
1718 * @param int $scaleid negative number
1721 function forum_scale_used ($forumid,$scaleid) {
1725 $rec = $DB->get_record("forum",array("id" => "$forumid","scale" => "-$scaleid"));
1727 if (!empty($rec) && !empty($scaleid)) {
1735 * Checks if scale is being used by any instance of forum
1737 * This is used to find out if scale used anywhere
1740 * @param $scaleid int
1741 * @return boolean True if the scale is used by any forum
1743 function forum_scale_used_anywhere($scaleid) {
1745 if ($scaleid and $DB->record_exists('forum', array('scale' => -$scaleid))) {
1752 // SQL FUNCTIONS ///////////////////////////////////////////////////////////
1755 * Gets a post with all info ready for forum_print_post
1756 * Most of these joins are just to get the forum id
1760 * @param int $postid
1761 * @return mixed array of posts or false
1763 function forum_get_post_full($postid) {
1766 $allnames = get_all_user_name_fields(true, 'u');
1767 return $DB->get_record_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
1768 FROM {forum_posts} p
1769 JOIN {forum_discussions} d ON p.discussion = d.id
1770 LEFT JOIN {user} u ON p.userid = u.id
1771 WHERE p.id = ?", array($postid));
1775 * Gets posts with all info ready for forum_print_post
1776 * We pass forumid in because we always know it so no need to make a
1777 * complicated join to find it out.
1781 * @return mixed array of posts or false
1783 function forum_get_discussion_posts($discussion, $sort, $forumid) {
1786 $allnames = get_all_user_name_fields(true, 'u');
1787 return $DB->get_records_sql("SELECT p.*, $forumid AS forum, $allnames, u.email, u.picture, u.imagealt
1788 FROM {forum_posts} p
1789 LEFT JOIN {user} u ON p.userid = u.id
1790 WHERE p.discussion = ?
1791 AND p.parent > 0 $sort", array($discussion));
1795 * Gets all posts in discussion including top parent.
1800 * @param int $discussionid
1801 * @param string $sort
1802 * @param bool $tracking does user track the forum?
1803 * @return array of posts
1805 function forum_get_all_discussion_posts($discussionid, $sort, $tracking=false) {
1806 global $CFG, $DB, $USER;
1814 $cutoffdate = $now - ($CFG->forum_oldpostdays * 24 * 3600);
1815 $tr_sel = ", fr.id AS postread";
1816 $tr_join = "LEFT JOIN {forum_read} fr ON (fr.postid = p.id AND fr.userid = ?)";
1817 $params[] = $USER->id;
1820 $allnames = get_all_user_name_fields(true, 'u');
1821 $params[] = $discussionid;
1822 if (!$posts = $DB->get_records_sql("SELECT p.*, $allnames, u.email, u.picture, u.imagealt $tr_sel
1823 FROM {forum_posts} p
1824 LEFT JOIN {user} u ON p.userid = u.id
1826 WHERE p.discussion = ?
1827 ORDER BY $sort", $params)) {
1831 foreach ($posts as $pid=>$p) {
1833 if (forum_tp_is_post_old($p)) {
1834 $posts[$pid]->postread = true;
1840 if (!isset($posts[$p->parent])) {
1841 continue; // parent does not exist??
1843 if (!isset($posts[$p->parent]->children)) {
1844 $posts[$p->parent]->children = array();
1846 $posts[$p->parent]->children[$pid] =& $posts[$pid];
1853 * Gets posts with all info ready for forum_print_post
1854 * We pass forumid in because we always know it so no need to make a
1855 * complicated join to find it out.
1859 * @param int $parent
1860 * @param int $forumid
1863 function forum_get_child_posts($parent, $forumid) {
1866 $allnames = get_all_user_name_fields(true, 'u');
1867 return $DB->get_records_sql("SELECT p.*, $forumid AS forum, $allnames, u.email, u.picture, u.imagealt
1868 FROM {forum_posts} p
1869 LEFT JOIN {user} u ON p.userid = u.id
1871 ORDER BY p.created ASC", array($parent));
1875 * An array of forum objects that the user is allowed to read/search through.
1880 * @param int $userid
1881 * @param int $courseid if 0, we look for forums throughout the whole site.
1882 * @return array of forum objects, or false if no matches
1883 * Forum objects have the following attributes:
1884 * id, type, course, cmid, cmvisible, cmgroupmode, accessallgroups,
1885 * viewhiddentimedposts
1887 function forum_get_readable_forums($userid, $courseid=0) {
1889 global $CFG, $DB, $USER;
1890 require_once($CFG->dirroot.'/course/lib.php');
1892 if (!$forummod = $DB->get_record('modules', array('name' => 'forum'))) {
1893 print_error('notinstalled', 'forum');
1897 $courses = $DB->get_records('course', array('id' => $courseid));
1899 // If no course is specified, then the user can see SITE + his courses.
1900 $courses1 = $DB->get_records('course', array('id' => SITEID));
1901 $courses2 = enrol_get_users_courses($userid, true, array('modinfo'));
1902 $courses = array_merge($courses1, $courses2);
1908 $readableforums = array();
1910 foreach ($courses as $course) {
1912 $modinfo = get_fast_modinfo($course);
1913 if (is_null($modinfo->groups)) {
1914 $modinfo->groups = groups_get_user_groups($course->id, $userid);
1917 if (empty($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', $context)) {
1939 if (is_null($modinfo->groups)) {
1940 $modinfo->groups = groups_get_user_groups($course->id, $USER->id);
1942 if (isset($modinfo->groups[$cm->groupingid])) {
1943 $forum->onlygroups = $modinfo->groups[$cm->groupingid];
1944 $forum->onlygroups[] = -1;
1946 $forum->onlygroups = array(-1);
1950 /// hidden timed discussions
1951 $forum->viewhiddentimedposts = true;
1952 if (!empty($CFG->forum_enabletimedposts)) {
1953 if (!has_capability('mod/forum:viewhiddentimedposts', $context)) {
1954 $forum->viewhiddentimedposts = false;
1959 if ($forum->type == 'qanda'
1960 && !has_capability('mod/forum:viewqandawithoutposting', $context)) {
1962 // We need to check whether the user has posted in the qanda forum.
1963 $forum->onlydiscussions = array(); // Holds discussion ids for the discussions
1964 // the user is allowed to see in this forum.
1965 if ($discussionspostedin = forum_discussions_user_has_posted_in($forum->id, $USER->id)) {
1966 foreach ($discussionspostedin as $d) {
1967 $forum->onlydiscussions[] = $d->id;
1972 $readableforums[$forum->id] = $forum;
1977 } // End foreach $courses
1979 return $readableforums;
1983 * Returns a list of posts found using an array of search terms.
1988 * @param array $searchterms array of search terms, e.g. word +word -word
1989 * @param int $courseid if 0, we search through the whole site
1990 * @param int $limitfrom
1991 * @param int $limitnum
1992 * @param int &$totalcount
1993 * @param string $extrasql
1994 * @return array|bool Array of posts found or false
1996 function forum_search_posts($searchterms, $courseid=0, $limitfrom=0, $limitnum=50,
1997 &$totalcount, $extrasql='') {
1998 global $CFG, $DB, $USER;
1999 require_once($CFG->libdir.'/searchlib.php');
2001 $forums = forum_get_readable_forums($USER->id, $courseid);
2003 if (count($forums) == 0) {
2008 $now = round(time(), -2); // db friendly
2010 $fullaccess = array();
2014 foreach ($forums as $forumid => $forum) {
2017 if (!$forum->viewhiddentimedposts) {
2018 $select[] = "(d.userid = :userid{$forumid} OR (d.timestart < :timestart{$forumid} AND (d.timeend = 0 OR d.timeend > :timeend{$forumid})))";
2019 $params = array_merge($params, array('userid'.$forumid=>$USER->id, 'timestart'.$forumid=>$now, 'timeend'.$forumid=>$now));
2023 $context = $forum->context;
2025 if ($forum->type == 'qanda'
2026 && !has_capability('mod/forum:viewqandawithoutposting', $context)) {
2027 if (!empty($forum->onlydiscussions)) {
2028 list($discussionid_sql, $discussionid_params) = $DB->get_in_or_equal($forum->onlydiscussions, SQL_PARAMS_NAMED, 'qanda'.$forumid.'_');
2029 $params = array_merge($params, $discussionid_params);
2030 $select[] = "(d.id $discussionid_sql OR p.parent = 0)";
2032 $select[] = "p.parent = 0";
2036 if (!empty($forum->onlygroups)) {
2037 list($groupid_sql, $groupid_params) = $DB->get_in_or_equal($forum->onlygroups, SQL_PARAMS_NAMED, 'grps'.$forumid.'_');
2038 $params = array_merge($params, $groupid_params);
2039 $select[] = "d.groupid $groupid_sql";
2043 $selects = implode(" AND ", $select);
2044 $where[] = "(d.forum = :forum{$forumid} AND $selects)";
2045 $params['forum'.$forumid] = $forumid;
2047 $fullaccess[] = $forumid;
2052 list($fullid_sql, $fullid_params) = $DB->get_in_or_equal($fullaccess, SQL_PARAMS_NAMED, 'fula');
2053 $params = array_merge($params, $fullid_params);
2054 $where[] = "(d.forum $fullid_sql)";
2057 $selectdiscussion = "(".implode(" OR ", $where).")";
2059 $messagesearch = '';
2062 // Need to concat these back together for parser to work.
2063 foreach($searchterms as $searchterm){
2064 if ($searchstring != '') {
2065 $searchstring .= ' ';
2067 $searchstring .= $searchterm;
2070 // We need to allow quoted strings for the search. The quotes *should* be stripped
2071 // by the parser, but this should be examined carefully for security implications.
2072 $searchstring = str_replace("\\\"","\"",$searchstring);
2073 $parser = new search_parser();
2074 $lexer = new search_lexer($parser);
2076 if ($lexer->parse($searchstring)) {
2077 $parsearray = $parser->get_parsed_array();
2078 // Experimental feature under 1.8! MDL-8830
2079 // Use alternative text searches if defined
2080 // This feature only works under mysql until properly implemented for other DBs
2081 // Requires manual creation of text index for forum_posts before enabling it:
2082 // CREATE FULLTEXT INDEX foru_post_tix ON [prefix]forum_posts (subject, message)
2083 // Experimental feature under 1.8! MDL-8830
2084 if (!empty($CFG->forum_usetextsearches)) {
2085 list($messagesearch, $msparams) = search_generate_text_SQL($parsearray, 'p.message', 'p.subject',
2086 'p.userid', 'u.id', 'u.firstname',
2087 'u.lastname', 'p.modified', 'd.forum');
2089 list($messagesearch, $msparams) = search_generate_SQL($parsearray, 'p.message', 'p.subject',
2090 'p.userid', 'u.id', 'u.firstname',
2091 'u.lastname', 'p.modified', 'd.forum');
2093 $params = array_merge($params, $msparams);
2096 $fromsql = "{forum_posts} p,
2097 {forum_discussions} d,
2100 $selectsql = " $messagesearch
2101 AND p.discussion = d.id
2103 AND $selectdiscussion
2106 $countsql = "SELECT COUNT(*)
2110 $allnames = get_all_user_name_fields(true, 'u');
2111 $searchsql = "SELECT p.*,
2119 ORDER BY p.modified DESC";
2121 $totalcount = $DB->count_records_sql($countsql, $params);
2123 return $DB->get_records_sql($searchsql, $params, $limitfrom, $limitnum);
2127 * Returns a list of ratings for a particular post - sorted.
2129 * TODO: Check if this function is actually used anywhere.
2130 * Up until the fix for MDL-27471 this function wasn't even returning.
2132 * @param stdClass $context
2133 * @param int $postid
2134 * @param string $sort
2135 * @return array Array of ratings or false
2137 function forum_get_ratings($context, $postid, $sort = "u.firstname ASC") {
2138 $options = new stdClass;
2139 $options->context = $context;
2140 $options->component = 'mod_forum';
2141 $options->ratingarea = 'post';
2142 $options->itemid = $postid;
2143 $options->sort = "ORDER BY $sort";
2145 $rm = new rating_manager();
2146 return $rm->get_all_ratings_for_item($options);
2150 * Returns a list of all new posts that have not been mailed yet
2152 * @param int $starttime posts created after this time
2153 * @param int $endtime posts created before this
2154 * @param int $now used for timed discussions only
2157 function forum_get_unmailed_posts($starttime, $endtime, $now=null) {
2161 $params['mailed'] = FORUM_MAILED_PENDING;
2162 $params['ptimestart'] = $starttime;
2163 $params['ptimeend'] = $endtime;
2164 $params['mailnow'] = 1;
2166 if (!empty($CFG->forum_enabletimedposts)) {
2170 $timedsql = "AND (d.timestart < :dtimestart AND (d.timeend = 0 OR d.timeend > :dtimeend))";
2171 $params['dtimestart'] = $now;
2172 $params['dtimeend'] = $now;
2177 return $DB->get_records_sql("SELECT p.*, d.course, d.forum
2178 FROM {forum_posts} p
2179 JOIN {forum_discussions} d ON d.id = p.discussion
2180 WHERE p.mailed = :mailed
2181 AND p.created >= :ptimestart
2182 AND (p.created < :ptimeend OR p.mailnow = :mailnow)
2184 ORDER BY p.modified ASC", $params);
2188 * Marks posts before a certain time as being mailed already
2192 * @param int $endtime
2193 * @param int $now Defaults to time()
2196 function forum_mark_old_posts_as_mailed($endtime, $now=null) {
2204 $params['mailedsuccess'] = FORUM_MAILED_SUCCESS;
2205 $params['now'] = $now;
2206 $params['endtime'] = $endtime;
2207 $params['mailnow'] = 1;
2208 $params['mailedpending'] = FORUM_MAILED_PENDING;
2210 if (empty($CFG->forum_enabletimedposts)) {
2211 return $DB->execute("UPDATE {forum_posts}
2212 SET mailed = :mailedsuccess
2213 WHERE (created < :endtime OR mailnow = :mailnow)
2214 AND mailed = :mailedpending", $params);
2216 return $DB->execute("UPDATE {forum_posts}
2217 SET mailed = :mailedsuccess
2218 WHERE discussion NOT IN (SELECT d.id
2219 FROM {forum_discussions} d
2220 WHERE d.timestart > :now)
2221 AND (created < :endtime OR mailnow = :mailnow)
2222 AND mailed = :mailedpending", $params);
2227 * Get all the posts for a user in a forum suitable for forum_print_post
2231 * @uses CONTEXT_MODULE
2234 function forum_get_user_posts($forumid, $userid) {
2238 $params = array($forumid, $userid);
2240 if (!empty($CFG->forum_enabletimedposts)) {
2241 $cm = get_coursemodule_from_instance('forum', $forumid);
2242 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2244 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2250 $allnames = get_all_user_name_fields(true, 'u');
2251 return $DB->get_records_sql("SELECT p.*, d.forum, $allnames, u.email, u.picture, u.imagealt
2253 JOIN {forum_discussions} d ON d.forum = f.id
2254 JOIN {forum_posts} p ON p.discussion = d.id
2255 JOIN {user} u ON u.id = p.userid
2259 ORDER BY p.modified ASC", $params);
2263 * Get all the discussions user participated in
2267 * @uses CONTEXT_MODULE
2268 * @param int $forumid
2269 * @param int $userid
2270 * @return array Array or false
2272 function forum_get_user_involved_discussions($forumid, $userid) {
2276 $params = array($forumid, $userid);
2277 if (!empty($CFG->forum_enabletimedposts)) {
2278 $cm = get_coursemodule_from_instance('forum', $forumid);
2279 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2281 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2287 return $DB->get_records_sql("SELECT DISTINCT d.*
2289 JOIN {forum_discussions} d ON d.forum = f.id
2290 JOIN {forum_posts} p ON p.discussion = d.id
2293 $timedsql", $params);
2297 * Get all the posts for a user in a forum suitable for forum_print_post
2301 * @param int $forumid
2302 * @param int $userid
2303 * @return array of counts or false
2305 function forum_count_user_posts($forumid, $userid) {
2309 $params = array($forumid, $userid);
2310 if (!empty($CFG->forum_enabletimedposts)) {
2311 $cm = get_coursemodule_from_instance('forum', $forumid);
2312 if (!has_capability('mod/forum:viewhiddentimedposts' , context_module::instance($cm->id))) {
2314 $timedsql = "AND (d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?))";
2320 return $DB->get_record_sql("SELECT COUNT(p.id) AS postcount, MAX(p.modified) AS lastpost
2322 JOIN {forum_discussions} d ON d.forum = f.id
2323 JOIN {forum_posts} p ON p.discussion = d.id
2324 JOIN {user} u ON u.id = p.userid
2327 $timedsql", $params);
2331 * Given a log entry, return the forum post details for it.
2335 * @param object $log
2336 * @return array|null
2338 function forum_get_post_from_log($log) {
2341 $allnames = get_all_user_name_fields(true, 'u');
2342 if ($log->action == "add post") {
2344 return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
2345 FROM {forum_discussions} d,
2350 AND d.id = p.discussion
2352 AND u.deleted <> '1'
2353 AND f.id = d.forum", array($log->info));
2356 } else if ($log->action == "add discussion") {
2358 return $DB->get_record_sql("SELECT p.*, f.type AS forumtype, d.forum, d.groupid, $allnames, u.email, u.picture
2359 FROM {forum_discussions} d,
2364 AND d.firstpost = p.id
2366 AND u.deleted <> '1'
2367 AND f.id = d.forum", array($log->info));
2373 * Given a discussion id, return the first post from the discussion
2377 * @param int $dicsussionid
2380 function forum_get_firstpost_from_discussion($discussionid) {
2383 return $DB->get_record_sql("SELECT p.*
2384 FROM {forum_discussions} d,
2387 AND d.firstpost = p.id ", array($discussionid));
2391 * Returns an array of counts of replies to each discussion
2395 * @param int $forumid
2396 * @param string $forumsort
2399 * @param int $perpage
2402 function forum_count_discussion_replies($forumid, $forumsort="", $limit=-1, $page=-1, $perpage=0) {
2408 } else if ($page != -1) {
2409 $limitfrom = $page*$perpage;
2410 $limitnum = $perpage;
2416 if ($forumsort == "") {
2421 $orderby = "ORDER BY $forumsort";
2422 $groupby = ", ".strtolower($forumsort);
2423 $groupby = str_replace('desc', '', $groupby);
2424 $groupby = str_replace('asc', '', $groupby);
2427 if (($limitfrom == 0 and $limitnum == 0) or $forumsort == "") {
2428 $sql = "SELECT p.discussion, COUNT(p.id) AS replies, MAX(p.id) AS lastpostid
2429 FROM {forum_posts} p
2430 JOIN {forum_discussions} d ON p.discussion = d.id
2431 WHERE p.parent > 0 AND d.forum = ?
2432 GROUP BY p.discussion";
2433 return $DB->get_records_sql($sql, array($forumid));
2436 $sql = "SELECT p.discussion, (COUNT(p.id) - 1) AS replies, MAX(p.id) AS lastpostid
2437 FROM {forum_posts} p
2438 JOIN {forum_discussions} d ON p.discussion = d.id
2440 GROUP BY p.discussion $groupby
2442 return $DB->get_records_sql("SELECT * FROM ($sql) sq", array($forumid), $limitfrom, $limitnum);
2450 * @staticvar array $cache
2451 * @param object $forum
2453 * @param object $course
2456 function forum_count_discussions($forum, $cm, $course) {
2457 global $CFG, $DB, $USER;
2459 static $cache = array();
2461 $now = round(time(), -2); // db cache friendliness
2463 $params = array($course->id);
2465 if (!isset($cache[$course->id])) {
2466 if (!empty($CFG->forum_enabletimedposts)) {
2467 $timedsql = "AND d.timestart < ? AND (d.timeend = 0 OR d.timeend > ?)";
2474 $sql = "SELECT f.id, COUNT(d.id) as dcount
2476 JOIN {forum_discussions} d ON d.forum = f.id
2481 if ($counts = $DB->get_records_sql($sql, $params)) {
2482 foreach ($counts as $count) {
2483 $counts[$count->id] = $count->dcount;
2485 $cache[$course->id] = $counts;
2487 $cache[$course->id] = array();
2491 if (empty($cache[$course->id][$forum->id])) {
2495 $groupmode = groups_get_activity_groupmode($cm, $course);
2497 if ($groupmode != SEPARATEGROUPS) {
2498 return $cache[$course->id][$forum->id];
2501 if (has_capability('moodle/site:accessallgroups', context_module::instance($cm->id))) {
2502 return $cache[$course->id][$forum->id];
2505 require_once($CFG->dirroot.'/course/lib.php');
2507 $modinfo = get_fast_modinfo($course);
2508 if (is_null($modinfo->groups)) {
2509 $modinfo->groups = groups_get_user_groups($course->id, $USER->id);
2512 if (array_key_exists($cm->groupingid, $modinfo->groups)) {
2513 $mygroups = $modinfo->groups[$cm->groupingid];
2515 $mygroups = false; // Will be set below
2518 // add all groups posts
2519 if (empty($mygroups)) {
2520 $mygroups = array(-1=>-1);
2525 list($mygroups_sql, $params) = $DB->get_in_or_equal($mygroups);
2526 $params[] = $forum->id;
2528 if (!empty($CFG->forum_enabletimedposts)) {
2529 $timedsql = "AND d.timestart < $now AND (d.timeend = 0 OR d.timeend > $now)";
2536 $sql = "SELECT COUNT(d.id)
2537 FROM {forum_discussions} d
2538 WHERE d.groupid $mygroups_sql AND d.forum = ?
2541 return $DB->get_field_sql($sql, $params);
2545 * How many posts by other users are unrated by a given user in the given discussion?
2547 * TODO: Is this function still used anywhere?
2549 * @param int $discussionid
2550 * @param int $userid
2553 function forum_count_unrated_posts($discussionid, $userid) {
2556 $sql = "SELECT COUNT(*) as num
2559 AND discussion = :discussionid
2560 AND userid <> :userid";
2561 $params = array('discussionid' => $discussionid, 'userid' => $userid);
2562 $posts = $DB->get_record_sql($sql, $params);
2564 $sql = "SELECT count(*) as num
2565 FROM {forum_posts} p,
2567 WHERE p.discussion = :discussionid AND
2569 r.userid = userid AND
2570 r.component = 'mod_forum' AND
2571 r.ratingarea = 'post'";
2572 $rated = $DB->get_record_sql($sql, $params);
2574 if ($posts->num > $rated->num) {
2575 return $posts->num - $rated->num;
2577 return 0; // Just in case there was a counting error
2588 * Get all discussions in a forum
2593 * @uses CONTEXT_MODULE
2594 * @uses VISIBLEGROUPS
2596 * @param string $forumsort
2597 * @param bool $fullpost
2598 * @param int $unused
2600 * @param bool $userlastmodified
2602 * @param int $perpage
2605 function forum_get_discussions($cm, $forumsort="d.timemodified DESC", $fullpost=true, $unused=-1, $limit=-1, $userlastmodified=false, $page=-1, $perpage=0) {
2606 global $CFG, $DB, $USER;
2610 $now = round(time(), -2);
2611 $params = array($cm->instance);
2613 $modcontext = context_module::instance($cm->id);
2615 if (!has_capability('mod/forum:viewdiscussion', $modcontext)) { /// User must have perms to view discussions
2619 if (!empty($CFG->forum_enabletimedposts)) { /// Users must fulfill timed posts
2621 if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
2622 $timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
2626 $timelimit .= " OR d.userid = ?";
2627 $params[] = $USER->id;
2636 } else if ($page != -1) {
2637 $limitfrom = $page*$perpage;
2638 $limitnum = $perpage;
2644 $groupmode = groups_get_activity_groupmode($cm);
2645 $currentgroup = groups_get_activity_group($cm);
2648 if (empty($modcontext)) {
2649 $modcontext = context_module::instance($cm->id);
2652 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2653 if ($currentgroup) {
2654 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2655 $params[] = $currentgroup;
2661 //seprate groups without access all
2662 if ($currentgroup) {
2663 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2664 $params[] = $currentgroup;
2666 $groupselect = "AND d.groupid = -1";
2674 if (empty($forumsort)) {
2675 $forumsort = "d.timemodified DESC";
2677 if (empty($fullpost)) {
2678 $postdata = "p.id,p.subject,p.modified,p.discussion,p.userid";
2683 if (empty($userlastmodified)) { // We don't need to know this
2688 $umnames = get_all_user_name_fields();
2689 foreach ($umnames as $umname) {
2690 $umfields .= ', um.' . $umname . ' AS um' . $umname;
2692 $umtable = " LEFT JOIN {user} um ON (d.usermodified = um.id)";
2695 $allnames = get_all_user_name_fields(true, 'u');
2696 $sql = "SELECT $postdata, d.name, d.timemodified, d.usermodified, d.groupid, d.timestart, d.timeend, $allnames,
2697 u.email, u.picture, u.imagealt $umfields
2698 FROM {forum_discussions} d
2699 JOIN {forum_posts} p ON p.discussion = d.id
2700 JOIN {user} u ON p.userid = u.id
2702 WHERE d.forum = ? AND p.parent = 0
2703 $timelimit $groupselect
2704 ORDER BY $forumsort";
2705 return $DB->get_records_sql($sql, $params, $limitfrom, $limitnum);
2713 * @uses CONTEXT_MODULE
2714 * @uses VISIBLEGROUPS
2718 function forum_get_discussions_unread($cm) {
2719 global $CFG, $DB, $USER;
2721 $now = round(time(), -2);
2722 $cutoffdate = $now - ($CFG->forum_oldpostdays*24*60*60);
2725 $groupmode = groups_get_activity_groupmode($cm);
2726 $currentgroup = groups_get_activity_group($cm);
2729 $modcontext = context_module::instance($cm->id);
2731 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2732 if ($currentgroup) {
2733 $groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
2734 $params['currentgroup'] = $currentgroup;
2740 //separate groups without access all
2741 if ($currentgroup) {
2742 $groupselect = "AND (d.groupid = :currentgroup OR d.groupid = -1)";
2743 $params['currentgroup'] = $currentgroup;
2745 $groupselect = "AND d.groupid = -1";
2752 if (!empty($CFG->forum_enabletimedposts)) {
2753 $timedsql = "AND d.timestart < :now1 AND (d.timeend = 0 OR d.timeend > :now2)";
2754 $params['now1'] = $now;
2755 $params['now2'] = $now;
2760 $sql = "SELECT d.id, COUNT(p.id) AS unread
2761 FROM {forum_discussions} d
2762 JOIN {forum_posts} p ON p.discussion = d.id
2763 LEFT JOIN {forum_read} r ON (r.postid = p.id AND r.userid = $USER->id)
2764 WHERE d.forum = {$cm->instance}
2765 AND p.modified >= :cutoffdate AND r.id is NULL
2769 $params['cutoffdate'] = $cutoffdate;
2771 if ($unreads = $DB->get_records_sql($sql, $params)) {
2772 foreach ($unreads as $unread) {
2773 $unreads[$unread->id] = $unread->unread;
2785 * @uses CONEXT_MODULE
2786 * @uses VISIBLEGROUPS
2790 function forum_get_discussions_count($cm) {
2791 global $CFG, $DB, $USER;
2793 $now = round(time(), -2);
2794 $params = array($cm->instance);
2795 $groupmode = groups_get_activity_groupmode($cm);
2796 $currentgroup = groups_get_activity_group($cm);
2799 $modcontext = context_module::instance($cm->id);
2801 if ($groupmode == VISIBLEGROUPS or has_capability('moodle/site:accessallgroups', $modcontext)) {
2802 if ($currentgroup) {
2803 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2804 $params[] = $currentgroup;
2810 //seprate groups without access all
2811 if ($currentgroup) {
2812 $groupselect = "AND (d.groupid = ? OR d.groupid = -1)";
2813 $params[] = $currentgroup;
2815 $groupselect = "AND d.groupid = -1";
2822 $cutoffdate = $now - ($CFG->forum_oldpostdays*24*60*60);
2826 if (!empty($CFG->forum_enabletimedposts)) {
2828 $modcontext = context_module::instance($cm->id);
2830 if (!has_capability('mod/forum:viewhiddentimedposts', $modcontext)) {
2831 $timelimit = " AND ((d.timestart <= ? AND (d.timeend = 0 OR d.timeend > ?))";
2835 $timelimit .= " OR d.userid = ?";
2836 $params[] = $USER->id;
2842 $sql = "SELECT COUNT(d.id)
2843 FROM {forum_discussions} d
2844 JOIN {forum_posts} p ON p.discussion = d.id
2845 WHERE d.forum = ? AND p.parent = 0
2846 $groupselect $timelimit";
2848 return $DB->get_field_sql($sql, $params);
2853 * Get all discussions started by a particular user in a course (or group)
2854 * This function no longer used ...
2856 * @todo Remove this function if no longer used
2859 * @param int $courseid
2860 * @param int $userid
2861 * @param int $groupid
2864 function forum_get_user_discussions($courseid, $userid, $groupid=0) {
2866 $params = array($courseid, $userid);
2868 $groupselect = " AND d.groupid = ? ";
2869 $params[] = $groupid;
2874 $allnames = get_all_user_name_fields(true, 'u');
2875 return $DB->get_records_sql("SELECT p.*, d.groupid, $allnames, u.email, u.picture, u.imagealt,
2876 f.type as forumtype, f.name as forumname, f.id as forumid
2877 FROM {forum_discussions} d,
2882 AND p.discussion = d.id
2886 AND d.forum = f.id $groupselect
2887 ORDER BY p.created DESC", $params);
2891 * Get the list of potential subscribers to a forum.
2893 * @param object $forumcontext the forum context.
2894 * @param integer $groupid the id of a group, or 0 for all groups.
2895 * @param string $fields the list of fields to return for each user. As for get_users_by_capability.
2896 * @param string $sort sort order. As for get_users_by_capability.
2897 * @return array list of users.
2899 function forum_get_potential_subscribers($forumcontext, $groupid, $fields, $sort = '') {
2902 // only active enrolled users or everybody on the frontpage
2903 list($esql, $params) = get_enrolled_sql($forumcontext, 'mod/forum:allowforcesubscribe', $groupid, true);
2905 list($sort, $sortparams) = users_order_by_sql('u');
2906 $params = array_merge($params, $sortparams);
2909 $sql = "SELECT $fields
2911 JOIN ($esql) je ON je.id = u.id
2914 return $DB->get_records_sql($sql, $params);
2918 * Returns list of user objects that are subscribed to this forum
2922 * @param object $course the course
2923 * @param forum $forum the forum
2924 * @param integer $groupid group id, or 0 for all.
2925 * @param object $context the forum context, to save re-fetching it where possible.
2926 * @param string $fields requested user fields (with "u." table prefix)
2927 * @return array list of users.
2929 function forum_subscribed_users($course, $forum, $groupid=0, $context = null, $fields = null) {
2932 $allnames = get_all_user_name_fields(true, 'u');
2933 if (empty($fields)) {
2955 if (empty($context)) {
2956 $cm = get_coursemodule_from_instance('forum', $forum->id, $course->id);
2957 $context = context_module::instance($cm->id);
2960 if (forum_is_forcesubscribed($forum)) {
2961 $results = forum_get_potential_subscribers($context, $groupid, $fields, "u.email ASC");
2964 // only active enrolled users or everybody on the frontpage
2965 list($esql, $params) = get_enrolled_sql($context, '', $groupid, true);
2966 $params['forumid'] = $forum->id;
2967 $results = $DB->get_records_sql("SELECT $fields
2969 JOIN ($esql) je ON je.id = u.id
2970 JOIN {forum_subscriptions} s ON s.userid = u.id
2971 WHERE s.forum = :forumid
2972 ORDER BY u.email ASC", $params);
2975 // Guest user should never be subscribed to a forum.
2976 unset($results[$CFG->siteguest]);
2983 // OTHER FUNCTIONS ///////////////////////////////////////////////////////////
2989 * @param int $courseid
2990 * @param string $type
2992 function forum_get_course_forum($courseid, $type) {
2993 // How to set up special 1-per-course forums
2994 global $CFG, $DB, $OUTPUT, $USER;
2996 if ($forums = $DB->get_records_select("forum", "course = ? AND type = ?", array($courseid, $type), "id ASC")) {
2997 // There should always only be ONE, but with the right combination of
2998 // errors there might be more. In this case, just return the oldest one (lowest ID).
2999 foreach ($forums as $forum) {
3000 return $forum; // ie the first one
3004 // Doesn't exist, so create one now.
3005 $forum = new stdClass();
3006 $forum->course = $courseid;
3007 $forum->type = "$type";
3008 if (!empty($USER->htmleditor)) {
3009 $forum->introformat = $USER->htmleditor;
3011 switch ($forum->type) {
3013 $forum->name = get_string("namenews", "forum");
3014 $forum->intro = get_string("intronews", "forum");
3015 $forum->forcesubscribe = FORUM_FORCESUBSCRIBE;
3016 $forum->assessed = 0;
3017 if ($courseid == SITEID) {
3018 $forum->name = get_string("sitenews");
3019 $forum->forcesubscribe = 0;
3023 $forum->name = get_string("namesocial", "forum");
3024 $forum->intro = get_string("introsocial", "forum");
3025 $forum->assessed = 0;
3026 $forum->forcesubscribe = 0;
3029 $forum->name = get_string('blogforum', 'forum');
3030 $forum->intro = get_string('introblog', 'forum');
3031 $forum->assessed = 0;
3032 $forum->forcesubscribe = 0;
3035 echo $OUTPUT->notification("That forum type doesn't exist!");
3040 $forum->timemodified = time();
3041 $forum->id = $DB->insert_record("forum", $forum);
3043 if (! $module = $DB->get_record("modules", array("name" => "forum"))) {
3044 echo $OUTPUT->notification("Could not find forum module!!");
3047 $mod = new stdClass();
3048 $mod->course = $courseid;
3049 $mod->module = $module->id;
3050 $mod->instance = $forum->id;
3052 include_once("$CFG->dirroot/course/lib.php");
3053 if (! $mod->coursemodule = add_course_module($mod) ) {
3054 echo $OUTPUT->notification("Could not add a new course module to the course '" . $courseid . "'");
3057 $sectionid = course_add_cm_to_section($courseid, $mod->coursemodule, 0);
3058 return $DB->get_record("forum", array("id" => "$forum->id"));
3063 * Given the data about a posting, builds up the HTML to display it and
3064 * returns the HTML in a string. This is designed for sending via HTML email.
3067 * @param object $course
3069 * @param object $forum
3070 * @param object $discussion
3071 * @param object $post
3072 * @param object $userform
3073 * @param object $userto
3074 * @param bool $ownpost
3075 * @param bool $reply
3078 * @param string $footer
3081 function forum_make_mail_post($course, $cm, $forum, $discussion, $post, $userfrom, $userto,
3082 $ownpost=false, $reply=false, $link=false, $rate=false, $footer="") {
3084 global $CFG, $OUTPUT;
3086 $modcontext = context_module::instance($cm->id);
3088 if (!isset($userto->viewfullnames[$forum->id])) {
3089 $viewfullnames = has_capability('moodle/site:viewfullnames', $modcontext, $userto->id);
3091 $viewfullnames = $userto->viewfullnames[$forum->id];
3094 // add absolute file links
3095 $post->message = file_rewrite_pluginfile_urls($post->message, 'pluginfile.php', $modcontext->id, 'mod_forum', 'post', $post->id);
3097 // format the post body
3098 $options = new stdClass();
3099 $options->para = true;
3100 $formattedtext = format_text($post->message, $post->messageformat, $options, $course->id);
3102 $output = '<table border="0" cellpadding="3" cellspacing="0" class="forumpost">';
3104 $output .= '<tr class="header"><td width="35" valign="top" class="picture left">';
3105 $output .= $OUTPUT->user_picture($userfrom, array('courseid'=>$course->id));
3108 if ($post->parent) {
3109 $output .= '<td class="topic">';
3111 $output .= '<td class="topic starter">';
3113 $output .= '<div class="subject">'.format_string($post->subject).'</div>';
3115 $fullname = fullname($userfrom, $viewfullnames);
3116 $by = new stdClass();
3117 $by->name = '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$userfrom->id.'&course='.$course->id.'">'.$fullname.'</a>';
3118 $by->date = userdate($post->modified, '', $userto->timezone);
3119 $output .= '<div class="author">'.get_string('bynameondate', 'forum', $by).'</div>';
3121 $output .= '</td></tr>';
3123 $output .= '<tr><td class="left side" valign="top">';
3125 if (isset($userfrom->groups)) {
3126 $groups = $userfrom->groups[$forum->id];
3128 $groups = groups_get_all_groups($course->id, $userfrom->id, $cm->groupingid);
3132 $output .= print_group_picture($groups, $course->id, false, true, true);
3134 $output .= ' ';
3137 $output .= '</td><td class="content">';
3139 $attachments = forum_print_attachments($post, $cm, 'html');
3140 if ($attachments !== '') {
3141 $output .= '<div class="attachments">';
3142 $output .= $attachments;
3143 $output .= '</div>';
3146 $output .= $formattedtext;
3149 $commands = array();
3151 if ($post->parent) {
3152 $commands[] = '<a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.
3153 $post->discussion.'&parent='.$post->parent.'">'.get_string('parent', 'forum').'</a>';
3157 $commands[] = '<a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/post.php?reply='.$post->id.'">'.
3158 get_string('reply', 'forum').'</a>';
3161 $output .= '<div class="commands">';
3162 $output .= implode(' | ', $commands);
3163 $output .= '</div>';
3165 // Context link to post if required
3167 $output .= '<div class="link">';
3168 $output .= '<a target="_blank" href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'#p'.$post->id.'">'.
3169 get_string('postincontext', 'forum').'</a>';
3170 $output .= '</div>';
3174 $output .= '<div class="footer">'.$footer.'</div>';
3176 $output .= '</td></tr></table>'."\n\n";
3182 * Print a forum post
3186 * @uses FORUM_MODE_THREADED
3187 * @uses PORTFOLIO_FORMAT_PLAINHTML
3188 * @uses PORTFOLIO_FORMAT_FILE
3189 * @uses PORTFOLIO_FORMAT_RICHHTML
3190 * @uses PORTFOLIO_ADD_TEXT_LINK
3191 * @uses CONTEXT_MODULE
3192 * @param object $post The post to print.
3193 * @param object $discussion
3194 * @param object $forum
3196 * @param object $course
3197 * @param boolean $ownpost Whether this post belongs to the current user.
3198 * @param boolean $reply Whether to print a 'reply' link at the bottom of the message.
3199 * @param boolean $link Just print a shortened version of the post as a link to the full post.
3200 * @param string $footer Extra stuff to print after the message.
3201 * @param string $highlight Space-separated list of terms to highlight.
3202 * @param int $post_read true, false or -99. If we already know whether this user
3203 * has read this post, pass that in, otherwise, pass in -99, and this
3204 * function will work it out.
3205 * @param boolean $dummyifcantsee When forum_user_can_see_post says that
3206 * the current user can't see this post, if this argument is true
3207 * (the default) then print a dummy 'you can't see this post' post.
3208 * If false, don't output anything at all.
3209 * @param bool|null $istracked
3212 function forum_print_post($post, $discussion, $forum, &$cm, $course, $ownpost=false, $reply=false, $link=false,
3213 $footer="", $highlight="", $postisread=null, $dummyifcantsee=true, $istracked=null, $return=false) {
3214 global $USER, $CFG, $OUTPUT;
3216 require_once($CFG->libdir . '/filelib.php');
3221 $modcontext = context_module::instance($cm->id);
3223 $post->course = $course->id;
3224 $post->forum = $forum->id;
3225 $post->message = file_rewrite_pluginfile_urls($post->message, 'pluginfile.php', $modcontext->id, 'mod_forum', 'post', $post->id);
3226 if (!empty($CFG->enableplagiarism)) {
3227 require_once($CFG->libdir.'/plagiarismlib.php');
3228 $post->message .= plagiarism_get_links(array('userid' => $post->userid,
3229 'content' => $post->message,
3231 'course' => $post->course,
3232 'forum' => $post->forum));
3236 if (!isset($cm->cache)) {
3237 $cm->cache = new stdClass;
3240 if (!isset($cm->cache->caps)) {
3241 $cm->cache->caps = array();
3242 $cm->cache->caps['mod/forum:viewdiscussion'] = has_capability('mod/forum:viewdiscussion', $modcontext);
3243 $cm->cache->caps['moodle/site:viewfullnames'] = has_capability('moodle/site:viewfullnames', $modcontext);
3244 $cm->cache->caps['mod/forum:editanypost'] = has_capability('mod/forum:editanypost', $modcontext);
3245 $cm->cache->caps['mod/forum:splitdiscussions'] = has_capability('mod/forum:splitdiscussions', $modcontext);
3246 $cm->cache->caps['mod/forum:deleteownpost'] = has_capability('mod/forum:deleteownpost', $modcontext);
3247 $cm->cache->caps['mod/forum:deleteanypost'] = has_capability('mod/forum:deleteanypost', $modcontext);
3248 $cm->cache->caps['mod/forum:viewanyrating'] = has_capability('mod/forum:viewanyrating', $modcontext);
3249 $cm->cache->caps['mod/forum:exportpost'] = has_capability('mod/forum:exportpost', $modcontext);
3250 $cm->cache->caps['mod/forum:exportownpost'] = has_capability('mod/forum:exportownpost', $modcontext);
3253 if (!isset($cm->uservisible)) {
3254 $cm->uservisible = coursemodule_visible_for_user($cm);
3257 if ($istracked && is_null($postisread)) {
3258 $postisread = forum_tp_is_post_read($USER->id, $post);
3261 if (!forum_user_can_see_post($forum, $discussion, $post, NULL, $cm)) {
3263 if (!$dummyifcantsee) {
3270 $output .= html_writer::tag('a', '', array('id'=>'p'.$post->id));
3271 $output .= html_writer::start_tag('div', array('class'=>'forumpost clearfix'));
3272 $output .= html_writer::start_tag('div', array('class'=>'row header'));
3273 $output .= html_writer::tag('div', '', array('class'=>'left picture')); // Picture
3274 if ($post->parent) {
3275 $output .= html_writer::start_tag('div', array('class'=>'topic'));
3277 $output .= html_writer::start_tag('div', array('class'=>'topic starter'));
3279 $output .= html_writer::tag('div', get_string('forumsubjecthidden','forum'), array('class'=>'subject')); // Subject
3280 $output .= html_writer::tag('div', get_string('forumauthorhidden','forum'), array('class'=>'author')); // author
3281 $output .= html_writer::end_tag('div');
3282 $output .= html_writer::end_tag('div'); // row
3283 $output .= html_writer::start_tag('div', array('class'=>'row'));
3284 $output .= html_writer::tag('div', ' ', array('class'=>'left side')); // Groups
3285 $output .= html_writer::tag('div', get_string('forumbodyhidden','forum'), array('class'=>'content')); // Content
3286 $output .= html_writer::end_tag('div'); // row
3287 $output .= html_writer::end_tag('div'); // forumpost
3297 $str = new stdClass;
3298 $str->edit = get_string('edit', 'forum');
3299 $str->delete = get_string('delete', 'forum');
3300 $str->reply = get_string('reply', 'forum');
3301 $str->parent = get_string('parent', 'forum');
3302 $str->pruneheading = get_string('pruneheading', 'forum');
3303 $str->prune = get_string('prune', 'forum');
3304 $str->displaymode = get_user_preferences('forum_displaymode', $CFG->forum_displaymode);
3305 $str->markread = get_string('markread', 'forum');
3306 $str->markunread = get_string('markunread', 'forum');
3309 $discussionlink = new moodle_url('/mod/forum/discuss.php', array('d'=>$post->discussion));
3311 // Build an object that represents the posting user
3312 $postuser = new stdClass;
3313 $postuser->id = $post->userid;
3314 foreach (get_all_user_name_fields() as $addname) {
3315 $postuser->$addname = $post->$addname;
3317 $postuser->imagealt = $post->imagealt;
3318 $postuser->picture = $post->picture;
3319 $postuser->email = $post->email;
3320 // Some handy things for later on
3321 $postuser->fullname = fullname($postuser, $cm->cache->caps['moodle/site:viewfullnames']);
3322 $postuser->profilelink = new moodle_url('/user/view.php', array('id'=>$post->userid, 'course'=>$course->id));
3324 // Prepare the groups the posting user belongs to
3325 if (isset($cm->cache->usersgroups)) {
3327 if (isset($cm->cache->usersgroups[$post->userid])) {
3328 foreach ($cm->cache->usersgroups[$post->userid] as $gid) {
3329 $groups[$gid] = $cm->cache->groups[$gid];
3333 $groups = groups_get_all_groups($course->id, $post->userid, $cm->groupingid);
3336 // Prepare the attachements for the post, files then images
3337 list($attachments, $attachedimages) = forum_print_attachments($post, $cm, 'separateimages');
3339 // Determine if we need to shorten this post
3340 $shortenpost = ($link && (strlen(strip_tags($post->message)) > $CFG->forum_longpost));
3343 // Prepare an array of commands
3344 $commands = array();
3346 // SPECIAL CASE: The front page can display a news item post to non-logged in users.
3347 // Don't display the mark read / unread controls in this case.
3348 if ($istracked && $CFG->forum_usermarksread && isloggedin()) {
3349 $url = new moodle_url($discussionlink, array('postid'=>$post->id, 'mark'=>'unread'));
3350 $text = $str->markunread;
3352 $url->param('mark', 'read');
3353 $text = $str->markread;
3355 if ($str->displaymode == FORUM_MODE_THREADED) {
3356 $url->param('parent', $post->parent);
3358 $url->set_anchor('p'.$post->id);
3360 $commands[] = array('url'=>$url, 'text'=>$text);
3363 // Zoom in to the parent specifically
3364 if ($post->parent) {
3365 $url = new moodle_url($discussionlink);
3366 if ($str->displaymode == FORUM_MODE_THREADED) {
3367 $url->param('parent', $post->parent);
3369 $url->set_anchor('p'.$post->parent);
3371 $commands[] = array('url'=>$url, 'text'=>$str->parent);
3374 // Hack for allow to edit news posts those are not displayed yet until they are displayed
3375 $age = time() - $post->created;
3376 if (!$post->parent && $forum->type == 'news' && $discussion->timestart > time()) {
3380 if ($forum->type == 'single' and $discussion->firstpost == $post->id) {
3381 if (has_capability('moodle/course:manageactivities', $modcontext)) {
3382 // The first post in single simple is the forum description.
3383 $commands[] = array('url'=>new moodle_url('/course/modedit.php', array('update'=>$cm->id, 'sesskey'=>sesskey(), 'return'=>1)), 'text'=>$str->edit);
3385 } else if (($ownpost && $age < $CFG->maxeditingtime) || $cm->cache->caps['mod/forum:editanypost']) {
3386 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('edit'=>$post->id)), 'text'=>$str->edit);
3389 if ($cm->cache->caps['mod/forum:splitdiscussions'] && $post->parent && $forum->type != 'single') {
3390 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('prune'=>$post->id)), 'text'=>$str->prune, 'title'=>$str->pruneheading);
3393 if ($forum->type == 'single' and $discussion->firstpost == $post->id) {
3394 // Do not allow deleting of first post in single simple type.
3395 } else if (($ownpost && $age < $CFG->maxeditingtime && $cm->cache->caps['mod/forum:deleteownpost']) || $cm->cache->caps['mod/forum:deleteanypost']) {
3396 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php', array('delete'=>$post->id)), 'text'=>$str->delete);
3400 $commands[] = array('url'=>new moodle_url('/mod/forum/post.php#mformforum', array('reply'=>$post->id)), 'text'=>$str->reply);
3403 if ($CFG->enableportfolios && ($cm->cache->caps['mod/forum:exportpost'] || ($ownpost && $cm->cache->caps['mod/forum:exportownpost']))) {
3404 $p = array('postid' => $post->id);
3405 require_once($CFG->libdir.'/portfoliolib.php');
3406 $button = new portfolio_add_button();
3407 $button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id), 'mod_forum');
3408 if (empty($attachments)) {
3409 $button->set_formats(PORTFOLIO_FORMAT_PLAINHTML);
3411 $button->set_formats(PORTFOLIO_FORMAT_RICHHTML);
3414 $porfoliohtml = $button->to_html(PORTFOLIO_ADD_TEXT_LINK);
3415 if (!empty($porfoliohtml)) {
3416 $commands[] = $porfoliohtml;
3419 // Finished building commands
3428 $forumpostclass = ' read';
3430 $forumpostclass = ' unread';
3431 $output .= html_writer::tag('a', '', array('name'=>'unread'));
3434 // ignore trackign status if not tracked or tracked param missing
3435 $forumpostclass = '';
3439 if (empty($post->parent)) {
3440 $topicclass = ' firstpost starter';
3443 $output .= html_writer::tag('a', '', array('id'=>'p'.$post->id));
3444 $output .= html_writer::start_tag('div', array('class'=>'forumpost clearfix'.$forumpostclass.$topicclass));
3445 $output .= html_writer::start_tag('div', array('class'=>'row header clearfix'));
3446 $output .= html_writer::start_tag('div', array('class'=>'left picture'));
3447 $output .= $OUTPUT->user_picture($postuser, array('courseid'=>$course->id));
3448 $output .= html_writer::end_tag('div');
3451 $output .= html_writer::start_tag('div', array('class'=>'topic'.$topicclass));
3453 $postsubject = $post->subject;
3454 if (empty($post->subjectnoformat)) {
3455 $postsubject = format_string($postsubject);
3457 $output .= html_writer::tag('div', $postsubject, array('class'=>'subject'));
3459 $by = new stdClass();
3460 $by->name = html_writer::link($postuser->profilelink, $postuser->fullname);
3461 $by->date = userdate($post->modified);
3462 $output .= html_writer::tag('div', get_string('bynameondate', 'forum', $by), array('class'=>'author'));
3464 $output .= html_writer::end_tag('div'); //topic
3465 $output .= html_writer::end_tag('div'); //row
3467 $output .= html_writer::start_tag('div', array('class'=>'row maincontent clearfix'));
3468 $output .= html_writer::start_tag('div', array('class'=>'left'));
3472 $groupoutput = print_group_picture($groups, $course->id, false, true, true);
3474 if (empty($groupoutput)) {
3475 $groupoutput = ' ';
3477 $output .= html_writer::tag('div', $groupoutput, array('class'=>'grouppictures'));
3479 $output .= html_writer::end_tag('div'); //left side
3480 $output .= html_writer::start_tag('div', array('class'=>'no-overflow'));
3481 $output .= html_writer::start_tag('div', array('class'=>'content'));
3482 if (!empty($attachments)) {
3483 $output .= html_writer::tag('div', $attachments, array('class'=>'attachments'));
3486 $options = new stdClass;
3487 $options->para = false;
3488 $options->trusted = $post->messagetrust;
3489 $options->context = $modcontext;
3491 // Prepare shortened version
3492 $postclass = 'shortenedpost';
3493 $postcontent = format_text(forum_shorten_post($post->message), $post->messageformat, $options, $course->id);
3494 $postcontent .= html_writer::link($discussionlink, get_string('readtherest', 'forum'));
3495 $postcontent .= html_writer::tag('div', '('.get_string('numwords', 'moodle', count_words($post->message)).')',
3496 array('class'=>'post-word-count'));
3498 // Prepare whole post
3499 $postclass = 'fullpost';
3500 $postcontent = format_text($post->message, $post->messageformat, $options, $course->id);
3501 if (!empty($highlight)) {
3502 $postcontent = highlight($highlight, $postcontent);
3504 if (!empty($forum->displaywordcount)) {
3505 $postcontent .= html_writer::tag('div', get_string('numwords', 'moodle', count_words($post->message)),
3506 array('class'=>'post-word-count'));
3508 $postcontent .= html_writer::tag('div', $attachedimages, array('class'=>'attachedimages'));
3511 // Output the post content
3512 $output .= html_writer::tag('div', $postcontent, array('class'=>'posting '.$postclass));
3513 $output .= html_writer::end_tag('div'); // Content
3514 $output .= html_writer::end_tag('div'); // Content mask
3515 $output .= html_writer::end_tag('div'); // Row
3517 $output .= html_writer::start_tag('div', array('class'=>'row side'));
3518 $output .= html_writer::tag('div',' ', array('class'=>'left'));
3519 $output .= html_writer::start_tag('div', array('class'=>'options clearfix'));
3522 if (!empty($post->rating)) {
3523 $output .= html_writer::tag('div', $OUTPUT->render($post->rating), array('class'=>'forum-post-rating'));
3526 // Output the commands
3527 $commandhtml = array();
3528 foreach ($commands as $command) {
3529 if (is_array($command)) {
3530 $commandhtml[] = html_writer::link($command['url'], $command['text']);
3532 $commandhtml[] = $command;
3535 $output .= html_writer::tag('div', implode(' | ', $commandhtml), array('class'=>'commands'));
3537 // Output link to post if required
3539 if ($post->replies == 1) {
3540 $replystring = get_string('repliesone', 'forum', $post->replies);
3542 $replystring = get_string('repliesmany', 'forum', $post->replies);
3545 $output .= html_writer::start_tag('div', array('class'=>'link'));
3546 $output .= html_writer::link($discussionlink, get_string('discussthistopic', 'forum'));
3547 $output .= ' ('.$replystring.')';
3548 $output .= html_writer::end_tag('div'); // link
3551 // Output footer if required
3553 $output .= html_writer::tag('div', $footer, array('class'=>'footer'));
3556 // Close remaining open divs
3557 $output .= html_writer::end_tag('div'); // content
3558 $output .= html_writer::end_tag('div'); // row
3559 $output .= html_writer::end_tag('div'); // forumpost
3561 // Mark the forum post as read if required
3562 if ($istracked && !$CFG->forum_usermarksread && !$postisread) {
3563 forum_tp_mark_post_read($USER->id, $post, $forum->id);
3574 * Return rating related permissions
3576 * @param string $options the context id
3577 * @return array an associative array of the user's rating permissions
3579 function forum_rating_permissions($contextid, $component, $ratingarea) {
3580 $context = context::instance_by_id($contextid, MUST_EXIST);
3581 if ($component != 'mod_forum' || $ratingarea != 'post') {
3582 // We don't know about this component/ratingarea so just return null to get the
3583 // default restrictive permissions.
3587 'view' => has_capability('mod/forum:viewrating', $context),
3588 'viewany' => has_capability('mod/forum:viewanyrating', $context),
3589 'viewall' => has_capability('mod/forum:viewallratings', $context),
3590 'rate' => has_capability('mod/forum:rate', $context)
3595 * Validates a submitted rating
3596 * @param array $params submitted data
3597 * context => object the context in which the rated items exists [required]
3598 * component => The component for this module - should always be mod_forum [required]
3599 * ratingarea => object the context in which the rated items exists [required]
3600 * itemid => int the ID of the object being rated [required]
3601 * scaleid => int the scale from which the user can select a rating. Used for bounds checking. [required]
3602 * rating => int the submitted rating [required]
3603 * rateduserid => int the id of the user whose items have been rated. NOT the user who submitted the ratings. 0 to update all. [required]
3604 * aggregation => int the aggregation method to apply when calculating grades ie RATING_AGGREGATE_AVERAGE [required]
3605 * @return boolean true if the rating is valid. Will throw rating_exception if not
3607 function forum_rating_validate($params) {
3610 // Check the component is mod_forum
3611 if ($params['component'] != 'mod_forum') {
3612 throw new rating_exception('invalidcomponent');
3615 // Check the ratingarea is post (the only rating area in forum)
3616 if ($params['ratingarea'] != 'post') {
3617 throw new rating_exception('invalidratingarea');
3620 // Check the rateduserid is not the current user .. you can't rate your own posts
3621 if ($params['rateduserid'] == $USER->id) {
3622 throw new rating_exception('nopermissiontorate');
3625 // Fetch all the related records ... we need to do this anyway to call forum_user_can_see_post
3626 $post = $DB->get_record('forum_posts', array('id' => $params['itemid'], 'userid' => $params['rateduserid']), '*', MUST_EXIST);
3627 $discussion = $DB->get_record('forum_discussions', array('id' => $post->discussion), '*', MUST_EXIST);
3628 $forum = $DB->get_record('forum', array('id' => $discussion->forum), '*', MUST_EXIST);
3629 $course = $DB->get_record('course', array('id' => $forum->course), '*', MUST_EXIST);
3630 $cm = get_coursemodule_from_instance('forum', $forum->id, $course->id , false, MUST_EXIST);
3631 $context = context_module::instance($cm->id);
3633 // Make sure the context provided is the context of the forum
3634 if ($context->id != $params['context']->id) {
3635 throw new rating_exception('invalidcontext');
3638 if ($forum->scale != $params['scaleid']) {
3639 //the scale being submitted doesnt match the one in the database
3640 throw new rating_exception('invalidscaleid');
3643 // check the item we're rating was created in the assessable time window
3644 if (!empty($forum->assesstimestart) && !empty($forum->assesstimefinish)) {
3645 if ($post->created < $forum->assesstimestart || $post->created > $forum->assesstimefinish) {
3646 throw new rating_exception('notavailable');
3650 //check that the submitted rating is valid for the scale
3653 if ($params['rating'] < 0 && $params['rating'] != RATING_UNSET_RATING) {
3654 throw new rating_exception('invalidnum');
3658 if ($forum->scale < 0) {
3659 //its a custom scale
3660 $scalerecord = $DB->get_record('scale', array('id' => -$forum->scale));
3662 $scalearray = explode(',', $scalerecord->scale);
3663 if ($params['rating'] > count($scalearray)) {
3664 throw new rating_exception('invalidnum');
3667 throw new rating_exception('invalidscaleid');
3669 } else if ($params['rating'] > $forum->scale) {
3670 //if its numeric and submitted rating is above maximum
3671 throw new rating_exception('invalidnum');
3674 // Make sure groups allow this user to see the item they're rating
3675 if ($discussion->groupid > 0 and $groupmode = groups_get_activity_groupmode($cm, $course)) { // Groups are being used
3676 if (!groups_group_exists($discussion->groupid)) { // Can't find group
3677 throw new rating_exception('cannotfindgroup');//something is wrong
3680 if (!groups_is_member($discussion->groupid) and !has_capability('moodle/site:accessallgroups', $context)) {
3681 // do not allow rating of posts from other groups when in SEPARATEGROUPS or VISIBLEGROUPS
3682 throw new rating_exception('notmemberofgroup');
3686 // perform some final capability checks
3687 if (!forum_user_can_see_post($forum, $discussion, $post, $USER, $cm)) {
3688 throw new rating_exception('nopermissiontorate');
3696 * This function prints the overview of a discussion in the forum listing.
3697 * It needs some discussion information and some post information, these
3698 * happen to be combined for efficiency in the $post parameter by the function
3699 * that calls this one: forum_print_latest_discussions()
3703 * @param object $post The post object (passed by reference for speed).
3704 * @param object $forum The forum object.
3705 * @param int $group Current group.
3706 * @param string $datestring Format to use for the dates.
3707 * @param boolean $cantrack Is tracking enabled for this forum.
3708 * @param boolean $forumtracked Is the user tracking this forum.
3709 * @param boolean $canviewparticipants True if user has the viewparticipants permission for this course
3711 function forum_print_discussion_header(&$post, $forum, $group=-1, $datestring="",
3712 $cantrack=true, $forumtracked=true, $canviewparticipants=true, $modcontext=NULL) {
3714 global $USER, $CFG, $OUTPUT;
3717 static $strmarkalldread;
3719 if (empty($modcontext)) {
3720 if (!$cm = get_coursemodule_from_instance('forum', $forum->id, $forum->course)) {
3721 print_error('invalidcoursemodule');
3723 $modcontext = context_module::instance($cm->id);
3726 if (!isset($rowcount)) {
3728 $strmarkalldread = get_string('markalldread', 'forum');
3730 $rowcount = ($rowcount + 1) % 2;
3733 $post->subject = format_string($post->subject,true);
3736 echo '<tr class="discussion r'.$rowcount.'">';
3739 echo '<td class="topic starter">';
3740 echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">'.$post->subject.'</a>';
3744 $postuser = new stdClass();
3745 $postuser->id = $post->userid;
3746 foreach (get_all_user_name_fields() as $addname) {
3747 $postuser->$addname = $post->$addname;
3749 $postuser->imagealt = $post->imagealt;
3750 $postuser->picture = $post->picture;
3751 $postuser->email = $post->email;
3753 echo '<td class="picture">';
3754 echo $OUTPUT->user_picture($postuser, array('courseid'=>$forum->course));
3758 $fullname = fullname($postuser, has_capability('moodle/site:viewfullnames', $modcontext));
3759 echo '<td class="author">';
3760 echo '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$post->userid.'&course='.$forum->course.'">'.$fullname.'</a>';
3764 if ($group !== -1) { // Groups are active - group is a group data object or NULL
3765 echo '<td class="picture group">';
3766 if (!empty($group->picture) and empty($group->hidepicture)) {
3767 print_group_picture($group, $forum->course, false, false, true);
3768 } else if (isset($group->id)) {
3769 if($canviewparticipants) {
3770 echo '<a href="'.$CFG->wwwroot.'/user/index.php?id='.$forum->course.'&group='.$group->id.'">'.$group->name.'</a>';
3778 if (has_capability('mod/forum:viewdiscussion', $modcontext)) { // Show the column with replies
3779 echo '<td class="replies">';
3780 echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'">';
3781 echo $post->replies.'</a>';
3785 echo '<td class="replies">';
3786 if ($forumtracked) {
3787 if ($post->unread > 0) {
3788 echo '<span class="unread">';
3789 echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.'#unread">';
3792 echo '<a title="'.$strmarkalldread.'" href="'.$CFG->wwwroot.'/mod/forum/markposts.php?f='.
3793 $forum->id.'&d='.$post->discussion.'&mark=read&returnpage=view.php">' .
3794 '<img src="'.$OUTPUT->pix_url('t/markasread') . '" class="iconsmall" alt="'.$strmarkalldread.'" /></a>';
3797 echo '<span class="read">';
3802 echo '<span class="read">';
3810 echo '<td class="lastpost">';
3811 $usedate = (empty($post->timemodified)) ? $post->modified : $post->timemodified; // Just in case
3812 $parenturl = (empty($post->lastpostid)) ? '' : '&parent='.$post->lastpostid;
3813 $usermodified = new stdClass();
3814 $usermodified->id = $post->usermodified;
3815 foreach (get_all_user_name_fields() as $addname) {
3816 $temp = 'um' . $addname;
3817 $usermodified->$addname = $post->$temp;
3819 echo '<a href="'.$CFG->wwwroot.'/user/view.php?id='.$post->usermodified.'&course='.$forum->course.'">'.
3820 fullname($usermodified).'</a><br />';
3821 echo '<a href="'.$CFG->wwwroot.'/mod/forum/discuss.php?d='.$post->discussion.$parenturl.'">'.
3822 userdate($usedate, $datestring).'</a>';
3831 * Given a post object that we already know has a long message
3832 * this function truncates the message nicely to the first
3833 * sane place between $CFG->forum_longpost and $CFG->forum_shortpost
3836 * @param string $message
3839 function forum_shorten_post($message) {
3845 $length = strlen($message);
3850 for ($i=0; $i<$length; $i++) {
3851 $char = $message[$i];
3873 if ($count > $CFG->forum_shortpost) {
3883 return substr($message, 0, $truncate);
3887 * Print the drop down that allows the user to select how they want to have
3888 * the discussion displayed.
3890 * @param int $id forum id if $forumtype is 'single',
3891 * discussion id for any other forum type
3892 * @param mixed $mode forum layout mode
3893 * @param string $forumtype optional
3895 function forum_print_mode_form($id, $mode, $forumtype='') {
3897 if ($forumtype == 'single') {
3898 $select = new single_select(new moodle_url("/mod/forum/view.php", array('f'=>$id)), 'mode', forum_get_layout_modes(), $mode, null, "mode");
3899 $select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
3900 $select->class = "forummode";
3902 $select = new single_select(new moodle_url("/mod/forum/discuss.php", array('d'=>$id)), 'mode', forum_get_layout_modes(), $mode, null, "mode");
3903 $select->set_label(get_string('displaymode', 'forum'), array('class' => 'accesshide'));
3905 echo $OUTPUT->render($select);
3910 * @param object $course
3911 * @param string $search
3914 function forum_search_form($course, $search='') {
3915 global $CFG, $OUTPUT;
3917 $output = '<div class="forumsearch">';
3918 $output .= '<form action="'.$CFG->wwwroot.'/mod/forum/search.php" style="display:inline">';
3919 $output .= '<fieldset class="invisiblefieldset">';
3920 $output .= $OUTPUT->help_icon('search');
3921 $output .= '<label class="accesshide" for="search" >'.get_string('search', 'forum').'</label>';
3922 $output .= '<input id="search" name="search" type="text" size="18" value="'.s($search, true).'" alt="search" />';
3923 $output .= '<label class="accesshide" for="searchforums" >'.get_string('searchforums', 'forum').'</label>';
3924 $output .= '<input id="searchforums" value="'.get_string('searchforums', 'forum').'" type="submit" />';
3925 $output .= '<input name="id" type="hidden" value="'.$course->id.'" />';
3926 $output .= '</fieldset>';
3927 $output .= '</form>';
3928 $output .= '</div>';
3938 function forum_set_return() {
3939 global $CFG, $SESSION;
3941 if (! isset($SESSION->fromdiscussion)) {
3942 if (!empty($_SERVER['HTTP_REFERER'])) {
3943 $referer = $_SERVER['HTTP_REFERER'];
3947 // If the referer is NOT a login screen then save it.
3948 if (! strncasecmp("$CFG->wwwroot/login", $referer, 300)) {
3949 $SESSION->fromdiscussion = $_SERVER["HTTP_REFERER"];
3957 * @param string $default
3960 function forum_go_back_to($default) {
3963 if (!empty($SESSION->fromdiscussion)) {
3964 $returnto = $SESSION->fromdiscussion;
3965 unset($SESSION->fromdiscussion);
3973 * Given a discussion object that is being moved to $forumto,
3974 * this function checks all posts in that discussion
3975 * for attachments, and if any are found, these are
3976 * moved to the new forum directory.
3979 * @param object $discussion
3980 * @param int $forumfrom source forum id
3981 * @param int $forumto target forum id
3982 * @return bool success
3984 function forum_move_attachments($discussion, $forumfrom, $forumto) {
3987 $fs = get_file_storage();
3989 $newcm = get_coursemodule_from_instance('forum', $forumto);
3990 $oldcm = get_coursemodule_from_instance('forum', $forumfrom);
3992 $newcontext = context_module::instance($newcm->id);
3993 $oldcontext = context_module::instance($oldcm->id);
3995 // loop through all posts, better not use attachment flag ;-)
3996 if ($posts = $DB->get_records('forum_posts', array('discussion'=>$discussion->id), '', 'id, attachment')) {
3997 foreach ($posts as $post) {
3998 $fs->move_area_files_to_new_context($oldcontext->id,
3999 $newcontext->id, 'mod_forum', 'post', $post->id);
4000 $attachmentsmoved = $fs->move_area_files_to_new_context($oldcontext->id,
4001 $newcontext->id, 'mod_forum', 'attachment', $post->id);
4002 if ($attachmentsmoved > 0 && $post->attachment != '1') {
4003 // Weird - let's fix it
4004 $post->attachment = '1';
4005 $DB->update_record('forum_posts', $post);
4006 } else if ($attachmentsmoved == 0 && $post->attachment != '') {
4007 // Weird - let's fix it
4008 $post->attachment = '';
4009 $DB->update_record('forum_posts', $post);
4018 * Returns attachments as formated text/html optionally with separate images
4023 * @param object $post
4025 * @param string $type html/text/separateimages
4026 * @return mixed string or array of (html text withouth images and image HTML)
4028 function forum_print_attachments($post, $cm, $type) {
4029 global $CFG, $DB, $USER, $OUTPUT;
4031 if (empty($post->attachment)) {
4032 return $type !== 'separateimages' ? '' : array('', '');
4035 if (!in_array($type, array('separateimages', 'html', 'text'))) {
4036 return $type !== 'separateimages' ? '' : array('', '');
4039 if (!$context = context_module::instance($cm->id)) {
4040 return $type !== 'separateimages' ? '' : array('', '');
4042 $strattachment = get_string('attachment', 'forum');
4044 $fs = get_file_storage();
4049 $canexport = !empty($CFG->enableportfolios) && (has_capability('mod/forum:exportpost', $context) || ($post->userid == $USER->id && has_capability('mod/forum:exportownpost', $context)));
4052 require_once($CFG->libdir.'/portfoliolib.php');
4055 $files = $fs->get_area_files($context->id, 'mod_forum', 'attachment', $post->id, "timemodified", false);
4058 $button = new portfolio_add_button();
4060 foreach ($files as $file) {
4061 $filename = $file->get_filename();
4062 $mimetype = $file->get_mimetype();
4063 $iconimage = $OUTPUT->pix_icon(file_file_icon($file), get_mimetype_description($file), 'moodle', array('class' => 'icon'));
4064 $path = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$context->id.'/mod_forum/attachment/'.$post->id.'/'.$filename);
4066 if ($type == 'html') {
4067 $output .= "<a href=\"$path\">$iconimage</a> ";
4068 $output .= "<a href=\"$path\">".s($filename)."</a>";
4070 $button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
4071 $button->set_format_by_file($file);
4072 $output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
4074 $output .= "<br />";
4076 } else if ($type == 'text') {
4077 $output .= "$strattachment ".s($filename).":\n$path\n";
4079 } else { //'returnimages'
4080 if (in_array($mimetype, array('image/gif', 'image/jpeg', 'image/png'))) {
4081 // Image attachments don't get printed as links
4082 $imagereturn .= "<br /><img src=\"$path\" alt=\"\" />";
4084 $button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
4085 $button->set_format_by_file($file);
4086 $imagereturn .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
4089 $output .= "<a href=\"$path\">$iconimage</a> ";
4090 $output .= format_text("<a href=\"$path\">".s($filename)."</a>", FORMAT_HTML, array('context'=>$context));
4092 $button->set_callback_options('forum_portfolio_caller', array('postid' => $post->id, 'attachment' => $file->get_id()), 'mod_forum');
4093 $button->set_format_by_file($file);
4094 $output .= $button->to_html(PORTFOLIO_ADD_ICON_LINK);
4096 $output .= '<br />';
4100 if (!empty($CFG->enableplagiarism)) {
4101 require_once($CFG->libdir.'/plagiarismlib.php');
4102 $output .= plagiarism_get_links(array('userid' => $post->userid,
4105 'course' => $post->course,
4106 'forum' => $post->forum));
4107 $output .= '<br />';