/**
* Update the DB based on previously recorded changes
*
* @return boolean true on success
*/
function dbupdate()
{
global $DB;
// Start transaction because of urltitle validation
$DB->begin('SERIALIZABLE');
// validate url title / slug
if (empty($this->urlname) || isset($this->dbchanges['cat_urlname'])) {
// Url title has changed or is empty
$this->set('urlname', urltitle_validate($this->urlname, $this->name, $this->ID, false, $this->dbprefix . 'urlname', $this->dbIDname, $this->dbtablename));
}
if (parent::dbupdate() === false) {
// The update was unsuccessful
$DB->rollback();
return false;
}
// The chapter was updated successful
$DB->commit();
return true;
}
