public function byInstance(DaActiveRecord $model) { $criteria = new CDbCriteria(); $criteria->addColumnCondition(array('id_photogallery_object' => $model->getIdObject(), 'id_photogallery_instance' => $model->getPrimaryKey())); $criteria->order = "sequence ASC"; $this->getDbCriteria()->mergeWith($criteria); return $this; }