/**
  * Request email change page.
  */
 public function actionEmail()
 {
     $model = new Email();
     if ($model->load(Yii::$app->request->post())) {
         if ($model->validate()) {
             if ($model->save(false)) {
                 Yii::$app->session->setFlash('success', Yii::t('users', 'FRONTEND_FLASH_SUCCES_EMAIL_CHANGE'));
                 return $this->redirect(['/users/default/view', 'username' => Yii::$app->user->identity->username]);
             } else {
                 Yii::$app->session->setFlash('danger', Yii::t('users', 'FRONTEND_FLASH_FAIL_EMAIL_CHANGE'));
                 return $this->refresh();
             }
         } elseif (Yii::$app->request->isAjax) {
             Yii::$app->response->format = Response::FORMAT_JSON;
             return ActiveForm::validate($model);
         }
     }
     return $this->render('email', ['model' => $model]);
 }