public function actionStayWithUs()
 {
     $model = new Feedback();
     if ($model->load(Yii::$app->request->post()) && $model->validate()) {
         $model->date = date('Y-m-d H:i:s', time());
         if ($model->save()) {
             $responce['status'] = 'ok';
         } else {
             $responce['status'] = 'error';
         }
     } else {
         $errors = $model->getErrors();
         if (count($errors) == 0) {
             $responce['status'] = 'error';
         } else {
             $responce['status'] = 'bad_validation';
             $responce['errors'] = $errors;
         }
     }
     return json_encode($responce);
 }