[ 
               'class' => AccessControl::className(), 
               'only' => ['logout'], 
               'rules' => [ 
                  [ 
                     'actions' => ['logout'], 
                     'allow' => true, 
                     'roles' => ['@'], 
                  ], 
               ], 
            ], 
            'verbs' => [
               'class' => VerbFilter::className(), 
               'actions' => [ 
                  'logout' => ['post'], 
               ], 
            ], 
         ]; 
      } 
      public function actions() { 
         return [ 
            'error' => [ 
               'class' => 'yii\web\ErrorAction', 
            ], 
            'captcha' => [ 
               'class' => 'yii\captcha\CaptchaAction', 
               'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null, 
            ], 
         ]; 
      } 
      public function actionIndex() { 
         return $this->render('index'); 
      } 
      public function actionLogin() { 
         if (!\Yii::$app->user->isGuest) { 
            return $this->goHome(); 
         } 
         $model = new LoginForm(); 
         if ($model->load(Yii::$app->request->post()) && $model->login()) { 
            return $this->goBack(); 
         } 
         return $this->render('login', [ 
            'model' => $model, 
         ]); 
      }
      public function actionLogout() { 
         Yii::$app->user->logout();  
         return $this->goHome(); 
      } 
      public function actionContact() { 
         //load ContactForm model 
         $model = new ContactForm(); 
         //if there was a POST request, then try to load POST data into a model 
         if ($model->load(Yii::$app->request->post()) && $model>contact(Yii::$app->params
            ['adminEmail'])) { 
            Yii::$app->session->setFlash('contactFormSubmitted');  
            return $this->refresh(); 
         } 
         return $this->render('contact', [ 
            'model' => $model, 
         ]); 
      } 
      public function actionAbout() { 
         return $this->render('about'); 
      } 
      public function actionSpeak($message = "default message") { 
         return $this->render("speak",['message' => $message]); 
      } 
   } 
?>

if ($model->load(Yii::$app->request->post()) && $model->contact(Yii::$app>params ['adminEmail'])) { 
   Yii::$app->session->setFlash('contactFormSubmitted'); 
   return $this->refresh(); 
}