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