/**
* Fetch TpProject which references this Logins. Will return null in case reference is invalid.
* `logins`.`tp_project` -> `tp_project`.`id`
*
* @param PDO $db a PDO Database instance
* @param array $sort array of DSC instances
* @return TpProject
*/
public function fetchTpProject(PDO $db, $sort = null)
{
$filter = array(TpProject::FIELD_ID => $this->getTpProject());
$result = TpProject::findByFilter($db, $filter, true, $sort);
return empty($result) ? null : $result[0];
}
