Question

/**
* @Route("/DeletePoll/{pollId}",name="poll_delete")
* @Template()
*/
public function DeletePollAction($pollId) 
{
    $entita = $this->get('doctrine')->getRepository('CvutFitBiWt1PollBundle:Poll')->find($pollId);

    $em = $this->getDoctrine()->getManager();
    $em->remove($entita);

    $em->flush();

    return $this->render('CvutFitBiWt1PollBundle:Poll:index.html.twig');
}

在我的index.html.twig

中

{% if polls %}
    {% for poll in polls %}
<a href="{{ path('poll_delete',{'pollId': poll.id}) }}">Delete</a>

它写错误：

变量“民意调查”不存在于 CvutFitBiWt1PollBundle：民意调查：index.html.twig at line 15 500 Internal 服务器错误 - Twig_Error_Runtime

在routing.yml

中

cvut_fit_bi_wt1_poll:
resource: "@CvutFitBiWt1PollBundle/Controller/"
type:     annotation
prefix:   /

我不知道，怎么写“返回”。

现在它的工作。返回必须像

 return $this->redirect($this->generateUrl('poll_index'));

poll_index来自

/**
* @Route("/",name="poll_index")
* @Template()
*/
public function indexAction() {}

Answer 1

您不会在此处向模板传递任何polls变量：

return $this->render('CvutFitBiWt1PollBundle:Poll:index.html.twig', array('pollId' => $pollId));

您需要指定它以在模板中使用它。

Answer 2

使用此路由模式进行删除

poll_delete:
    pattern:  /DeletePoll/{pollId}        
    defaults: { _controller: "CvutFitBiWt1PollBundle:Poll:DeletePollAction" }
    requirements: { _method: get|delete }

在树枝模板中调用

<a class="btn btn-danger" href="{{ path('poll_delete', { 'pollId': pollId }) }}">

使用重定向删除控制器

public function DeletePollAction($pollId) 
{
    $entity = $this->get('doctrine')->getRepository('CvutFitBiWt1PollBundle:Poll')->find($pollId);

    $em = $this->getDoctrine()->getManager();
    $em->remove($entity);

    $em->flush();

    return $this->redirect($this->generateUrl('poll_index'));
}

变量“民意调查”不存在于

2 个答案: