/** * Show uploaded file by id in db * @param $id * @return \yii\web\Response */ public function actionView($id) { /** @var FileUpload|FileBehavior $file */ $file = FileUpload::findOne($id); if (!empty($file)) { $file->showFile(); exit; } Yii::$app->session->setFlash('error', "File not found"); return $this->redirect(['index']); }