/**
  * Finds user by [[username]]
  *
  * @return User|null
  */
 public function getUser()
 {
     // if ($this->user === false) {
     if (true) {
         $this->user = Vip::find()->andWhere(['or', ['username' => $this->username], ['email' => $this->username]])->one();
     }
     return $this->user;
 }
 /**
  * Finds the Vip model based on its primary key value.
  * If the model is not found, a 404 HTTP exception will be thrown.
  * @param integer $id
  * @return Vip the loaded model
  * @throws NotFoundHttpException if the model cannot be found
  */
 protected function findModel($id)
 {
     if (($model = Vip::findOne($id)) !== null) {
         return $model;
     } else {
         throw new NotFoundHttpException('The requested page does not exist.');
     }
 }