/**
* Saves a new draft message.
* @param int $forumid ID of forum
* @param int $groupid Group ID (null if none)
* @param int $parentpostid ID of post this is in reply to, or 0 for
* a new discussion
* @param string $subject Subject of draft post
* @param string $message Message of draft post
* @param int $format Format (FORMAT_xx) of message
* @param array $attachments Array of paths to attachments
* @param string $options Options (null if none)
* @param int $userid User ID or 0 for current
* @return int ID of new draft
*/
static function save_new($forum, $groupid, $parentpostid, $subject, $message, $format, $attachments, $options, $userid = 0)
{
$userid = forum_utils::get_real_userid($userid);
$serializedoptions = $options ? addslashes(serialize($options)) : null;
$record = (object) array('userid' => $userid, 'forumid' => $forum->get_id(), 'parentpostid' => $parentpostid ? $parentpostid : null, 'subject' => addslashes($subject), 'message' => addslashes($message), 'format' => $format, 'attachments' => count($attachments) > 0 ? 1 : 0, 'saved' => time(), 'groupid' => $groupid, 'options' => $serializedoptions);
forum_utils::start_transaction();
$draftid = forum_utils::insert_record('forumng_drafts', $record);
foreach ($attachments as $path) {
self::add_attachment($path, $forum->get_course()->id, $forum->get_id(), $draftid);
}
forum_utils::finish_transaction();
return $draftid;
}
/**
* Update the forumng_subscription table to incorporate the group subscription feature.
* @param bool $moodleupdate If this is true, the function is running as part of the
* moodle upgrade.php for Sep 2010 release. In this case, the database queries must
* not be changed and other code must work the same way (avoid calls to functions
* except Moodle standard ones)
*/
public function group_subscription_update($moodleupdate = false, $cmid = 0)
{
global $CFG;
forum_utils::start_transaction();
if ($cmid) {
//only update one forum
$optionalquery = "AND cm.id = {$cmid}";
} else {
$optionalquery = '';
}
// Query get the distinct forums
$sql_count = "\nSELECT\n COUNT(DISTINCT cm.id) AS totalnumberforum\nFROM \n {$CFG->prefix}forumng_subscriptions fs\n INNER JOIN {$CFG->prefix}course_modules cm on fs.forumid = cm.instance \n INNER JOIN {$CFG->prefix}modules m on cm.module = m.id \n INNER JOIN {$CFG->prefix}course c on c.id = cm.course \nWHERE \n discussionid IS NULL AND m.name='forumng' {$optionalquery}\n AND (CASE WHEN c.groupmodeforce=1 THEN c.groupmode ELSE cm.groupmode END ) = 1";
//Query lists all subscriptions to forums that have separate groups
$sql_sub = "\nSELECT\n cm.id AS cmid, fs.id AS subid, fs.userid, fs.forumid, c.id AS courseid, cm.groupingid \nFROM\n {$CFG->prefix}forumng_subscriptions fs\n INNER JOIN {$CFG->prefix}course_modules cm on fs.forumid = cm.instance \n INNER JOIN {$CFG->prefix}modules m on cm.module = m.id \n INNER JOIN {$CFG->prefix}course c on c.id = cm.course \nWHERE \n discussionid IS NULL and m.name='forumng' {$optionalquery}\n AND (CASE WHEN c.groupmodeforce=1 THEN c.groupmode ELSE cm.groupmode END ) = 1 \nORDER BY cm.id, fs.id";
//Query lists all groups that the user belongs to from the above query
$sql_group = "\nSELECT\n subs.subid, g.id AS groupid\nFROM\n ({$sql_sub}) subs \n INNER JOIN {$CFG->prefix}groups_members gm ON gm.userid = subs.userid \n INNER JOIN {$CFG->prefix}groups g ON gm.groupid = g.id AND g.courseid = subs.courseid \n LEFT JOIN {$CFG->prefix}groupings_groups gg ON gg.groupid = g.id AND subs.groupingid = gg.groupingid \nWHERE\n (subs.groupingid = 0 or gg.id IS NOT NULL)\nORDER BY\n subs.cmid, subs.subid";
$rs = forum_utils::get_recordset_sql($sql_group);
$results = array();
while ($rec = rs_fetch_next_record($rs)) {
if (!array_key_exists($rec->subid, $results)) {
$results[$rec->subid] = array();
}
$results[$rec->subid][] = $rec->groupid;
}
rs_close($rs);
$rs = forum_utils::get_recordset_sql($sql_sub);
$lastcmid = 0;
$forumcount = 1;
$totalforumcount = 0;
$totalforumcount = count_records_sql($sql_count);
while ($rec = rs_fetch_next_record($rs)) {
if ($lastcmid != $rec->cmid) {
if ($moodleupdate) {
print "Updating the subscriptions {$forumcount}/{$totalforumcount} (current cmid:{$rec->cmid}) <br />";
}
$context = get_context_instance(CONTEXT_MODULE, $rec->cmid);
$aagusers = get_users_by_capability($context, 'moodle/site:accessallgroups', 'u.id');
$aagusers = $aagusers ? $aagusers : array();
$lastcmid = $rec->cmid;
$forumcount++;
}
if (!array_key_exists($rec->userid, $aagusers)) {
//Delete the whole forum subscription
forum_utils::delete_records('forumng_subscriptions', 'id', $rec->subid);
//check if the subid exists in the results array
if (array_key_exists($rec->subid, $results)) {
foreach ($results[$rec->subid] as $groupid) {
$subrecord = new StdClass();
$subrecord->userid = $rec->userid;
$subrecord->forumid = $rec->forumid;
$subrecord->subscribed = 1;
$subrecord->groupid = $groupid;
forum_utils::insert_record('forumng_subscriptions', $subrecord);
}
}
}
}
forum_utils::finish_transaction();
}
/**
* Subscribe a user to this discussion. (Assuming it permits manual subscribe/
* unsubscribe.)
* @param $userid User ID (default current)
* @param $log True to log this
*/
public function subscribe($userid = 0, $log = true)
{
global $CFG;
$userid = forum_utils::get_real_userid($userid);
// For shared forums, we subscribe to a specific clone
if ($this->get_forum()->is_shared()) {
$clonecmid = $this->get_forum()->get_course_module_id();
$clonevalue = '=' . $clonecmid;
} else {
$clonecmid = null;
$clonevalue = 'IS NULL';
}
forum_utils::start_transaction();
//Clear any previous subscriptions to this discussion from the same user if any
forum_utils::execute_sql("DELETE FROM {$CFG->prefix}forumng_subscriptions " . "WHERE userid=" . $userid . " AND discussionid=" . $this->discussionfields->id . " AND clonecmid " . $clonevalue);
$subrecord = new StdClass();
$subrecord->userid = $userid;
$subrecord->forumid = $this->get_forum()->get_id();
$subrecord->subscribed = 1;
$subrecord->discussionid = $this->discussionfields->id;
$subrecord->clonecmid = $clonecmid;
forum_utils::insert_record('forumng_subscriptions', $subrecord);
forum_utils::finish_transaction();
if ($log) {
$this->log('subscribe', $userid . ' discussion ' . $this->get_id());
}
}
/**
* Rates this post or updates an existing rating.
* @param $rating Rating (value depends on scale used) or NO_RATING
* @param $userid User ID or 0 for current user
*/
function rate($rating, $userid = 0)
{
if (!$userid) {
global $USER;
$userid = $USER->id;
}
forum_utils::start_transaction();
// Delete any existing rating
forum_utils::delete_records('forumng_ratings', 'postid', $this->postfields->id, 'userid', $userid);
// Add new rating
if ($rating != self::NO_RATING) {
$ratingobj = new StdClass();
$ratingobj->userid = $userid;
$ratingobj->postid = $this->postfields->id;
$ratingobj->time = time();
$ratingobj->rating = $rating;
forum_utils::insert_record('forumng_ratings', $ratingobj);
}
// Tell grade to update
if ($this->get_forum()->get_grading()) {
$this->get_forum()->update_grades($this->get_user()->id);
}
forum_utils::finish_transaction();
$this->get_discussion()->uncache();
}
