public function actionValidateRegisterForm()
 {
     $regFrm = new RegisterForm();
     if (Yii::$app->request->isAjax && $regFrm->load(Yii::$app->request->post())) {
         Yii::$app->response->format = Response::FORMAT_JSON;
         return ActiveForm::validate($regFrm);
     }
 }
 public function actionRegister()
 {
     $regFrm = new RegisterForm();
     if ($regFrm->load(Yii::$app->request->post()) && $regFrm->validate()) {
         $ok = $regFrm->register();
         if ($ok) {
             return $this->redirect(Url::to('/?mid=1'));
         }
     }
     return $this->goHome();
 }