/**
  * Создать группу
  * @return array|string|Response
  */
 public function actionCreate()
 {
     $model = new AuthItem(['scenario' => 'create']);
     if ($model->load(Yii::$app->request->post())) {
         if ($model->validate()) {
             if ($model->save(false)) {
                 Yii::$app->session->setFlash('success', Yii::t('users', 'SUCCESS_UPDATE'));
             } else {
                 Yii::$app->session->setFlash('success', Yii::t('users', 'FAIL_UPDATE'));
             }
             return $this->redirect(['index']);
         } else {
             if (Yii::$app->request->isAjax) {
                 Yii::$app->response->format = Response::FORMAT_JSON;
                 return ActiveForm::validate($model);
             }
         }
     }
     return $this->render('create', ['model' => $model]);
 }