public function store(Request $request)
 {
     $object = new Option();
     $params = $request->only('user_id', 'brand_id', 'district_id');
     $filter = $object->validator($params, ['user_id' => 'required|exists:users,id|' . 'unique:traders,user_id,NULL,user_id,user_id,' . $params['user_id'] . ',brand_id,' . $params['brand_id'] . ',district_id,' . $params['district_id']]);
     if ($filter->fails()) {
         if ($request->ajax()) {
             return $this->responseAnswer(true, $params, $filter->errors());
         } else {
             $error = $filter->errors()->toArray();
             return redirect('admin/trader/' . $params['user_id'] . '/edit')->with('error', $error);
         }
     }
     $object->fill($params);
     $object->save();
     if ($request->ajax()) {
         return $this->responseAnswer(false, $object);
     } else {
         return redirect('admin/trader/' . $params['user_id'] . '/edit');
     }
 }