public function editprovince()
 {
     $err = array();
     if ($_POST['_type'] == 3) {
         $model_province = model_ext_province::find($_POST['province_code']);
         $model_province->delete();
     } else {
         if ($_POST['_type'] == 1) {
             $model_province = new model_ext_province();
             $model_province->create($_POST);
         } else {
             if ($_POST['_type'] == 2) {
                 $model_province = model_ext_province::find($_POST['province_code_old']);
                 unset($_POST['province_code_old']);
                 $model_province->fill($_POST);
                 $model_province->save();
             }
         }
     }
     return redirect('/backend/province')->withErrors($err);
 }
 public function index()
 {
     $model_city = model_ext_city::get();
     $model_ext_province = model_ext_province::all()->sortBy('province_name')->pluck('province_name', 'province_code');
     return view('backend.city.index')->with(['model_city' => $model_city, 'model_province' => $model_ext_province]);
 }
 public function getCity()
 {
     $province_id = $_POST['province_id'];
     $model_province = model_ext_province::find($province_id);
     echo json_encode($model_province->city);
 }