在Doctrine EventListener中获取用户

Question

当我注册一个新的质粒实体时,我想给他一个自动名称(如:p0001,p0002,p0003),为此,我需要在数据库中选择特定用户的最后一个质粒实体,获取其autoName,以及使用此以前的名称来定义新名称.

但是,当我在我的监听器中注入token_storage时,令牌为空...在控制器中,我可以拥有用户,这是有效的.

service.yml

    app.event_listener.plasmid:
    class: AppBundle\EventListener\PlasmidListener
    arguments: ["@security.token_storage"]
    tags:
        - { name: doctrine.event_listener, event: prePersist }

并且,PlasmidListener

class PlasmidListener
{
private $user;

public function __construct(TokenStorage $tokenStorage)
{
    $this->user = $tokenStorage->getToken()->getUser();
}

public function prePersist(LifecycleEventArgs $args)
{
    $entity = $args->getEntity();

    // If the entity is not a Plasmid, return
    if (!$entity instanceof Plasmid) {
        return;
    }

    // Else, we have a Plasmid, get the entity manager
    $em = $args->getEntityManager();

    // Get the last plasmid Name
    $lastPlasmid = $em->getRepository('AppBundle:Plasmid')->findLastPlasmid($this->user);

    // Do something with the last plasmid in the database
}
}

如果有人知道为什么我可以在Doctrine Listener中获得实际用户？

谢谢

Answer 1

我认为您应该在服务中存储指向tokenStorage类的指针而不是用户对象:

class PlasmidListener
 {
    private $tokenStorage;

    public function __construct(TokenStorage $tokenStorage)
    {
        $this->tokenStorage = $tokenStorage;
    }

    public function prePersist(LifecycleEventArgs $args)
    {
        $user = $this->tokenStorage->getToken()->getUser();
        //...
    }
}