小编TaK*_*kEr的帖子

我在使用flashbag消息时遇到了麻烦.我的情况很简单:

我的代码

1. 使用表单编辑页面:

   # src/Namespace/MyBundle/Resources/views/Edit/form.html.twig
   <form action="{{ path('form_url_save', {'id': id }) }}" method="POST">
       {{ form_widget(form) }}
   </form>
   

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2. 通过控制器将数据表单保存在数据库中:

   # src/Namespace/MyBundle/Controller/EntityController.php
   public function saveAction(Request $request, Entity $entity = null) {
       try {
           if (!$entity) {
               $entity = new Entity();
           }
   
           $form = $this->createForm(new EntityType(), $entity);
   
           if ($request->getMethod() == 'POST') {
               $form->submit($request);
   
               if ($form->isValid()) {
                   // Entity manager
                   $em = $this->getDoctrine()->getManager();
                   // Persist data
                   $em->persist($form->getData());
                   // Saving process
                   $em->flush();
                   // Add flashbag message
                   $this->get('session')->getFlashBag()->add('success', 'The backup was done successfully'));
               } else { …

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