Symfony2 - 将当前登录的用户注入(inject)监听器

Question

我正在尝试将当前登录的用户注入(inject)监听器。我的目标是每次用户执行任何操作时，将当前的\DateTime() 写入“demo_user”表的“last_active”列(这两个 this 方法对我不起作用)。

app/config/config.yml

# ...
services:
    demo.listener:
        class: Demo\UserBundle\EventListener\ActivityWatcher.php
        arguments: ['@service_container']
        tags:
            - { name: doctrine.event_listener, event: postLoad }

src/Demo/UserBundle/EventListener/ActivityWatcher.php

namespace Demo\UserBundle\EventListener;

use Doctrine\ORM\Event\LifecycleEventArgs;
use Symfony\Component\DependencyInjection\ContainerInterface;
use Demo\UserBundle\Entity\DemoUser;

class ActivityWatcher
{

    protected $container;

    public function __construct(ContainerInterface $container)
    {   
        $this->container = $container;
    }


    public function postLoad(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        $entityManager = $args->getEntityManager();

        if ($entity instanceof DemoUser) {
            $token = $this->container->get('security.context')->getToken();
            $user = $token->getUser();

            if($entity->getId() == $user->getId()) {
                $entity->setLastActivity( new \DateTime() );
                $entityManager->persist($entity);
                $entityManager->flush();
            }
        }
    }
}

但是$token总是空的... 更新:没有提到，发生这种情况时我已登录并经过身份验证

FatalErrorException: Error: Call to a member function getUser()
on a non-object ...

有什么想法吗？啊，谢谢，简

更新:

我也尝试只注入(inject) security.context:

arguments: ["@security.context"]

但是得到了

ServiceCircularReferenceException: Circular reference detected for "doctrine.orm.default_entity_manager", path: "doctrine.orm.default_entity_manager -> doctrine.dbal.default_connection -> wwk.listener -> security.context -> security.authentication.manager -> security.user.provider.concrete.administrators".

Answer 1

对于 symfony 2.4 你应该能够注入(inject)表达式， 所以而不是 @service_container 使用 @=service('security.context').getToken().getUser() 直接获取用户