/** * Retrieves entity id field, based on entity configuration * * @param Mage_Eav_Model_Entity_Type|Mage_Eav_Model_Entity_Attribute $entityTypeModel * @return string */ protected function _getEntityIdField($entityTypeModel) { if ($entityTypeModel->getEntityIdField()) { return $entityTypeModel->getEntityIdField(); } return Mage_Eav_Model_Entity::DEFAULT_ENTITY_ID_FIELD; }