public function actionTempFile()
 {
     $model = new DynamicModel(['nama', 'file_id']);
     // behavior untuk upload file
     $model->attachBehavior('upload', ['class' => 'mdm\\upload\\UploadBehavior', 'attribute' => 'file', 'savedAttribute' => 'file_id']);
     // rule untuk model
     $model->addRule('nama', 'string')->addRule('file', 'file', ['extensions' => 'txt']);
     if ($model->load(Yii::$app->request->post()) && $model->validate()) {
         if ($model->saveUploadedFile() !== false) {
             Yii::$app->session->setFlash('success', 'Upload Sukses');
         }
     }
     return $this->render('upload-manifest', ['model' => $model]);
 }