public function showContactForm() { $app = Yii::$app; $model = new ContactForm(['scenario' => 'feedback']); if ($app->request->isPost && $model->load($app->request->post())) { if ($model->sendContactEmail()) { $model = new ContactForm(['scenario' => 'feedback']); Yii::$app->session->setFlash('contactFormSubmitted', true); } } return $this->renderPartial('_contactForm', ['model' => $model]); }