[英]Symfony2 Unable to find controller inside an EventListener
我正在尝试从EventListener重定向到控制器,但收到以下错误消息:
Unable to find controller "HRPortalSystemBundle:Home:login"
我肯定HomeController位于\\ HRPortal \\ SystemBundle \\ Controller下,并且确实有一个名为loginAction()的方法。 此操作还有一条非常有效的路线:
# routing.yml
login:
path: /login
defaults: { _controller: HRPortalSystemBundle:Home:login }
我的代码如下:
<?php
namespace HRPortal\SystemBundle\EventListener;
use HRPortal\SystemBundle\Controller\TokenAuthenticatedController;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Symfony\Component\HttpKernel\Event\FilterControllerEvent;
use Symfony\Component\HttpKernel\Controller\ControllerResolver;
use Symfony\Component\HttpFoundation\Request;
class TokenListener
{
private $em;
private $userRepo;
private $session;
public function __construct($em, $session)
{
$this->session = $session;
$this->em = $em;
$this->userRepo = $em->getRepository('HRPortalSystemBundle:Users');
}
public function onKernelController(FilterControllerEvent $event)
{
$controller = $event->getController();
if (!is_array($controller)) {
return;
}
if ($controller[0] instanceof TokenAuthenticatedController) {
if($this->session->has('id') && $this->session->has('token')){
$sess_id = $this->session->get('id');
$sess_token = $this->session->get('token');
$user = $this->userRepo->findBy(array('id'=>$sess_id, 'token'=>$sess_token));
if($user == null){
throw new AccessDeniedHttpException('We could not find the user');
}else{
if($user->token != $sess_token){
throw new AccessDeniedHttpException('This action needs a valid token');
}
}
}else{
$request = new Request();
$resolver = new ControllerResolver();
$request->attributes->set('_controller', 'HRPortalSystemBundle:Home:login');
$event->setController($resolver->getController($request));
}
}
}
}
另外我不确定$ resolver是否正确使用,因为我猜这将是解决该问题之后的下一个问题。
提前致谢。
===编辑===
我已完成以下操作,似乎现在可以找到控制器。
$request = new Request();
$resolver = new ControllerResolver();
$request->attributes->set('_controller', 'HRPortal\SystemBundle\Controller\HomeController::loginAction');
$event->setController($resolver->getController($request));
但是,我收到以下错误消息:
Error: Call to a member function get() on a non-object in /usr/local/apache2/htdocs/hrportal/vendor/symfony/symfony/src/Symfony/Bundle/FrameworkBundle/Controller/Controller.php line 106
因此,似乎控制器和解析器有问题。
看完ControllerResolver
源代码后,似乎getController
方法期望_controller
字符串已经转换为Classname::MethodName
格式(或PHP可调用)。
此转换是通过ControllerNameParser
的parse
方法完成的。
我终于解决了这个问题。 感谢Martin,我使用了ControllerNameParser类来解析控制器名称。 但是我还需要从services.yml文件中将容器注入到EventListener中。 我认为最好将代码发布给面临相同问题的开发人员:
Services.yml:
parameters:
session_handler.class: HRPortal\SystemBundle\Services\SessionHandler
token_listener.class: HRPortal\SystemBundle\EventListener\TokenListener
...
services:
session_handler:
class: "%session_handler.class%"
arguments:
em: @doctrine.orm.entity_manager
session: @session
tokens_listener:
class: "%token_listener.class%"
arguments:
em: @doctrine.orm.entity_manager
container: @service_container
tags:
- { name: kernel.event_listener, event: kernel.controller, method: onKernelController }
...
TokenListener.php
<?php
namespace HRPortal\SystemBundle\EventListener;
use HRPortal\SystemBundle\Controller\TokenAuthenticatedController;
use Symfony\Component\HttpKernel\Exception\AccessDeniedHttpException;
use Symfony\Component\HttpKernel\Event\FilterControllerEvent;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Bundle\FrameworkBundle\Controller\ControllerResolver;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Bundle\FrameworkBundle\Controller\ControllerNameParser;
class TokenListener extends Controller
{
protected $em;
protected $userRepo;
protected $container;
public function __construct($em, $container)
{
$this->container = $container;
$this->em = $em;
$this->userRepo = $em->getRepository('HRPortalSystemBundle:Users');
}
public function onKernelController(FilterControllerEvent $event)
{
$success = false;
$controller = $event->getController();
if (!is_array($controller)) {
return;
}
if ($controller[0] instanceof TokenAuthenticatedController) {
$session = $this->container->get('session_handler');
$loggedIn = $session->isLoggedIn();
if(!$loggedIn){
$request = new Request();
$request->attributes->set('_controller', 'HRPortal\SystemBundle\Controller\AuthController::loginAction');
$parser = new ControllerNameParser($this->container->get('kernel'));
$resolver = new ControllerResolver($this->container, $parser);
$event->setController($resolver->getController($request));
}
return;
}
}
}
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