/**
* Gets unread data from original forum.
* @param int $unread UNREAD_xx constant
* @throws mod_forumng_exception If this is not a clone forum
*/
public function init_unread_from_original($unread)
{
global $DB;
$cmid = $this->forumfields->originalcmid;
if (!$cmid) {
throw new coding_exception('This forum is not a clone');
}
$viewhiddenforums = array();
if (has_capability('mod/forumng:viewallposts', get_context_instance(CONTEXT_MODULE, $cmid))) {
$viewhiddenforums[] = $DB->get_field('course_modules', 'instance', array('id' => $cmid));
}
$rows = mod_forumng::query_forums(array($cmid), null, 0, $unread, array(), array(), $viewhiddenforums);
if (count($rows) != 1) {
throw new coding_exception('Unexpected data extracting base forum');
}
$row = reset($rows);
switch ($unread) {
case self::UNREAD_BINARY:
if (isset($row->f_hasunreaddiscussions)) {
$this->forumfields->hasunreaddiscussions = $row->f_hasunreaddiscussions;
} else {
$this->forumfields->hasunreaddiscussions = $row->f_numunreaddiscussions ? 1 : 0;
}
break;
case self::UNREAD_DISCUSSIONS:
$this->forumfields->numunreaddiscussions = $row->f_numunreaddiscussions;
break;
}
}
