query()->where('parent_city_id', $city)->get(); } public function deleteDistrictByCity($id) { $neighborhood = new NeighborhoodModel(); $districts = $this->where('parent_city_id',$id); $districts_id = $districts->get(); foreach ($districts_id as $item) { $neighborhood->deleteNeighborhoodByDistrict($item->id); } return $districts->delete(); } }