我要做的是拥有自定义错误页面,不仅会扩展基本布局,而且我还希望在这些页面中额外销售内容,因此只更改模板不是一个选项
无论原因(404 Not Found或只是缺少变量)我想显示我的模板和我的内容
我花了好几个小时试图让这一切没有运气
app/console --version
Symfony version 2.5.6 - app/dev/debug
我尝试了一些资源,但无法让它发挥作用。名字有几个:
http://symfony.com/doc/current/reference/configuration/twig.html http://symfony.com/doc/current/cookbook/controller/error_pages.html
我在dev中运行而没有调试,请参阅下面的app_dev.php
:
$kernel = new AppKernel('dev', false);
按照教程我得到了这些额外的位
app/config/config.yml
twig:
exception_controller: SomethingAppBundle:Exception:show
在我的包中
<?php
namespace Something\AppBundle\Controller;
use Symfony\Component\HttpKernel\Log\DebugLoggerInterface;
use Symfony\Component\HttpKernel\Exception\FlattenException;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class ExceptionController extends Controller
{
public function showAction( FlattenException $error, DebugLoggerInterface $debug)
{
print_r($error);
}
}
但我的错误控制器没有被执行,
我故意通过尝试在不同的控制器中回显未定义的变量来导致错误,因为它应该处理来自整个应用程序的错误
答案 0 :(得分:2)
在开始时,您需要在控制器中创建操作:
<?php
namespace AppBundle\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class ErrorController extends Controller
{
public function notFoundAction()
{
return $this->render('error/404.html.twig');
}
}
然后你需要创建一个监听器:
<?php
namespace AppBundle\EventListener;
use Symfony\Component\HttpKernel\Event\GetResponseForExceptionEvent;
use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
use Symfony\Component\HttpKernel\HttpKernelInterface;
class NotFoundHttpExceptionListener
{
private $controller_resolver;
private $request_stack;
private $http_kernel;
public function __construct($controller_resolver, $request_stack, $http_kernel)
{
$this->controller_resolver = $controller_resolver;
$this->request_stack = $request_stack;
$this->http_kernel = $http_kernel;
}
public function onKernelException(GetResponseForExceptionEvent $event)
{
if ($event->getException() instanceof NotFoundHttpException) {
$request = new \Symfony\Component\HttpFoundation\Request();
$request->attributes->set('_controller', 'AppBundle:Error:notFound');
$controller = $this->controller_resolver->getController($request);
$path['_controller'] = $controller;
$subRequest = $this->request_stack->getCurrentRequest()->duplicate(array(), null, $path);
$event->setResponse($this->http_kernel->handle($subRequest, HttpKernelInterface::MASTER_REQUEST)); // Simulating "forward" in order to preserve the "Not Found URL"
}
}
}
现在注册服务:
#AppBundle/Resources/config/services.yml
services:
kernel.listener.notFoundHttpException:
class: AppBundle\EventListener\NotFoundHttpExceptionListener
tags:
- { name: kernel.event_listener, event: kernel.exception, method: onKernelException, priority: -10 }
arguments: [ @controller_resolver, @request_stack, @http_kernel ]
未对此进行测试,而是应该有效;)
经过测试,确实有效。在呈现的页面上,您有一个会话,因此您可以访问app.user,他的购物车以及与会话相关的其他事项。