Symfony 渲染 Controller 异常模板 ("")

Question

我试图在 Twig 中渲染一个 Controller 。我遵循文档“嵌入其他 Controller ”。

我经常使用方法 render(controller()) 得到一个异常(exception):渲染模板("") 时抛出异常

在我的 template.html.twig 中

{{ render(controller('MyBundle:User:logo')) }}

在我的 Controller 中

class UserController extends Controller {
    public function logoAction()
    {        
        return $this->render('MyBundle:User:logo.html.twig', []);   
    }
}

如果我在我的模板中使用它效果很好

{% render url('logo') %}

随着路线

logo:
    pattern:  /logo
    defaults: { _controller: MyBundle:User:logo }

但我想使用 render(controller())

我做错了什么？

编辑，添加更多关于异常的信息:

An exception has been thrown during the rendering of a template ("") in MyBundle:My/Dashboard:dashboard.html.twig at line 51.

500 Internal Server Error - Twig_Error_Runtime 1 linked Exception: ResourceNotFoundException »

[2/2] Twig_Error_Runtime: An exception has been thrown during the rendering of a template ("") in MyBundle:My/Dashboard:dashboard.html.twig at line 51.   -

in app/cache/dev/classes.php at line 7378   - } catch (Twig_Error $e) { throw $e; } catch (Exception $e) { throw new Twig_Error_Runtime(sprintf('An exception has been thrown during the rendering of a template ("%s").', $e->getMessage()), -1, $template->getTemplateName(), $e); } } elseif (false !== $parent = $this->getParent($context)) { $parent->displayBlock($name, $context, array_merge($this->blocks, $blocks), false); at Twig_Template
->displayBlock ('body', array('preset' => array('date' => '2015-03-31'),... 1/2] ResourceNotFoundException:    -

in app/cache/dev/appDevUrlMatcher.php at line 632   -
        }
        throw 0 < count($allow) ? new MethodNotAllowedException(array_unique($allow)) : new ResourceNotFoundException();
    } } at appDevUrlMatcher ->match ('/_fragment')  in app/cache/dev/classes.php at line 3278   + at Router ->match ('/_fragment')

Edit2 dashboard.html.twig

{% block body %}
    <div class="panel panel-default">
      <div class="panel-heading"> 
        <span class="glyphicon glyphicon-random" aria-hidden="true"></span>
        <b>{{ "Request"|trans }}</b>
      </div>
      <div class="panel-body">
          <form role="form" action="{{ path('dashboard', {'idDbd': idDbd}) }}">
                <div class="form-inline">
                    {{ render(controller('MyBundle:User:logo')) }}
                </div>
                {% include 'MyBundle:My/Request:request_edit.html.twig' %}
          </form>
      </div>
    </div>      
    (...)

Answer 1

为了能够对子请求使用 controller() 表示法，您需要启用能够处理此类子请求的特殊 FragmentListener。

您需要在 config.yml 文件中包含它的配置。这是在新的 Symfony 项目中默认完成的:https://github.com/symfony/symfony-standard/blob/7311e7065bea8986f8eb2e95ab9dd4a55ce95ae2/app/config/config.yml#L31查看你自己的项目中是否有这一行