/**
  * Creates a new Contents model.
  * If creation is successful, the browser will be redirected to the 'view' page.
  * @return mixed
  */
 public function actionCreate($id)
 {
     $model = new Contents();
     $model->Document = $id;
     $model->Product = Yii::$app->request->get('pid');
     if ($model->load(Yii::$app->request->post()) && $model->save()) {
         //return $this->redirect(['view', 'id' => $model->ID]);
         return $this->goBack();
     } else {
         return $this->render('create', ['model' => $model]);
     }
 }