syfmony2 中的 Twig 返回空白

Question

我的问题是我的控制器成功完成，但树枝/视图随后呈现空白。该请求不返回 html。

我的控制器结束得很好：

    $logger->info('Now sending song [' . $song->getId() . ' to twig');
    return array('song'=>$song);
}

由于我没有错误，所以很难找到问题所在。我所拥有的只是来自 monolog 的 dev.log：

[2011-10-04 07:41:03] app.INFO: Now sending song [672] to twig [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.view" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelView". [] []
[2011-10-04 07:41:03] event.DEBUG: Listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\TemplateListener::onKernelView" stopped propagation of the event "kernel.view". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Component\HttpKernel\EventListener\ResponseListener::onKernelResponse". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bundle\SecurityBundle\EventListener\ResponseListener::onKernelResponse". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bridge\Monolog\Handler\FirePHPHandler::onKernelResponse". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\CacheListener::onKernelResponse". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Component\HttpKernel\EventListener\ProfilerListener::onKernelResponse". [] []
[2011-10-04 07:41:03] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener::onKernelResponse". [] []

我认为第三行一定是问题所在，但我不知道它意味着什么，或者有任何解决方法。

编辑： 如果我改变我的控制器： - 删除了@Template() - end 看起来像：

$logger->info('Now sending song [' . $song->getId() . '] to twig');
$content = $this->renderView('MyPadBundle:Play:index.html.twig', array('song'=>$song));
$logger->info('content rendered');
return new Response($content);

那么我的 dev.log 是：

[2011-10-04 09:42:52] app.INFO: Now sending song [189] to twig [] []
[2011-10-04 09:42:53] app.INFO: content rendered [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Component\HttpKernel\EventListener\ResponseListener::onKernelResponse". [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bundle\SecurityBundle\EventListener\ResponseListener::onKernelResponse". [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bridge\Monolog\Handler\FirePHPHandler::onKernelResponse". [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Sensio\Bundle\FrameworkExtraBundle\EventListener\CacheListener::onKernelResponse". [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Component\HttpKernel\EventListener\ProfilerListener::onKernelResponse". [] []
[2011-10-04 09:42:53] event.DEBUG: Notified event "kernel.response" to listener "Symfony\Bundle\WebProfilerBundle\EventListener\WebDebugToolbarListener::onKernelResponse". [] []

就像内核无法返回响应？

Answer 1

我不知道出了什么问题，但这确实解决了这个问题：

$logger->info('Now sending song [' . $song->getId() . '] to twig');
$em->clear();
return array('song'=>$song);

应该知道这将是缺乏错误报告的原则。无论如何，该表只有 1000 行，所以不确定它对于 twig 的处理来说会太多，特别是因为我只传递一行/实体。

不得不承认我对教义感到失望；或者问题可能出在 symfony 模板的糟糕设计上？