将SecurityContext注入Symfony2中的监听器prePersist或preUpdate以在createBy或updatedBy中获取User导致循环引用错误

I setup a listener class where i'll set the ownerid column on any doctrine prePersist. My services.yml file looks like this ...

我设置了一个监听器类，我将在任何doctrine prePersist上设置ownerid列。我的services.yml文件看起来像这样......

services:
my.listener:
    class: App\SharedBundle\Listener\EntityListener
    arguments: ["@security.context"]
    tags:
        - { name: doctrine.event_listener, event: prePersist }

and my class looks like this ...

我的班级看起来像这样......

use Doctrine\ORM\Event\LifecycleEventArgs;
use Symfony\Component\Security\Core\SecurityContextInterface;

class EntityListener
{

protected $securityContext;

public function __construct(SecurityContextInterface $securityContext)
{
    $this->securityContext = $securityContext;
}


/**
 *
 * @param LifecycleEventArgs $args 
 */
public function prePersist(LifecycleEventArgs $args)
{

    $entity = $args->getEntity();
    $entityManager = $args->getEntityManager();

    $entity->setCreatedby();

}
}

The result of this is the following error.

结果是以下错误。

ServiceCircularReferenceException: Circular reference detected for service "doctrine.orm.default_entity_manager", path: "doctrine.orm.default_entity_manager -> doctrine.dbal.default_connection -> my.listener -> security.context -> security.authentication.manager -> fos_user.user_manager".

ServiceCircularReferenceException：检测到服务“doctrine.orm.default_entity_manager”的循环引用，路径：“doctrine.orm.default_entity_manager - > doctrine.dbal.default_connection - > my.listener - > security.context - > security.authentication.manager - > fos_user .user_manager”。

My assumption is that the security context has already been injected somewhere in the chain but I don't know how to access it. Any ideas?

我的假设是安全上下文已经被注入链中的某个地方，但我不知道如何访问它。有任何想法吗？

4 个解决方案

#1

I had similar problems and the only workaround was to pass the whole container in the constructor (arguments: ['@service_container']).

我有类似的问题，唯一的解决方法是在构造函数中传递整个容器（参数：['@ service_container']）。

use Doctrine\ORM\Event\LifecycleEventArgs;
use Symfony\Component\DependencyInjection\ContainerInterface;

class MyListener
{
    protected $container;

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

    // ...

    public function prePersist(LifeCycleEventArgs $args)
    {
        $securityContext = $this->container->get('security.context');

        // ...
    }
}

#2

As of Symfony 2.6 this issue should be fixed. A pull request has just been accepted into the master. Your problem is described in here. https://github.com/symfony/symfony/pull/11690

从Symfony 2.6开始，这个问题应该修复。拉出请求刚刚被主人接受。你的问题在这里描述。 https://github.com/symfony/symfony/pull/11690

As of Symfony 2.6, you can inject the security.token_storage into your listener. This service will contain the token as used by the SecurityContext in <=2.5. In 3.0 this service will replace the SecurityContext::getToken() altogether. You can see a basic change list here: http://symfony.com/blog/new-in-symfony-2-6-security-component-improvements#deprecated-the-security-context-service

从Symfony 2.6开始，您可以将security.token_storage注入到监听器中。此服务将包含SecurityContext在<= 2.5中使用的令牌。在3.0中，此服务将完全替换SecurityContext :: getToken（）。您可以在此处查看基本更改列表：http：//symfony.com/blog/new-in-symfony-2-6-security-component-improvements#deprecated-the-security-context-service

Example usage in 2.6:

2.6中的示例用法：

Your configuration:

你的配置：

services:
    my.listener:
        class: App\SharedBundle\Listener\EntityListener
        arguments:
            - "@security.token_storage"
        tags:
            - { name: doctrine.event_listener, event: prePersist }

Your Listener

你的倾听者

namespace App\SharedBundle\Listener;

use Doctrine\ORM\Event\LifecycleEventArgs;
use Symfony\Component\Security\Core\Authentication\Token\Storage\TokenStorageInterface;

class EntityListener
{
    private $token_storage;

    public function __construct(TokenStorageInterface $token_storage)
    {
        $this->token_storage = $token_storage;
    }

    public function prePersist(LifeCycleEventArgs $args)
    {
        $entity = $args->getEntity();
        $entity->setCreatedBy($this->token_storage->getToken()->getUsername());
    }
}

For a nice created_by example, you can use https://github.com/hostnet/entity-blamable-component/blob/master/src/Listener/BlamableListener.php for inspiration. It uses the hostnet/entity-tracker-component which provides a special event that is fired when an entity is changed during your request. There's also a bundle to configure this in Symfony2

对于一个很好的created_by示例，您可以使用https://github.com/hostnet/entity-blamable-component/blob/master/src/Listener/BlamableListener.php获取灵感。它使用hostnet / entity-tracker-component，它提供在请求期间更改实体时触发的特殊事件。还有一个捆绑包可以在Symfony2中配置它

https://github.com/hostnet/entity-tracker-component
https://github.com/hostnet/entity-tracker-component
https://github.com/hostnet/entity-tracker-bundle
https://github.com/hostnet/entity-tracker-bundle

#3

I use the doctrine config files to set preUpdate or prePersist methods:

我使用doctrine配置文件来设置preUpdate或prePersist方法：

Project\MainBundle\Entity\YourEntity:
    type: entity
    table: yourentities
    repositoryClass: Project\MainBundle\Repository\YourEntitytRepository
    fields:
        id:
            type: integer
            id: true
            generator:
                strategy: AUTO

    lifecycleCallbacks:
        prePersist: [methodNameHere]
        preUpdate: [anotherMethodHere]

And the methods are declared in the entity, this way you don't need a listener and if you need a more general method you can make a BaseEntity to keep that method and extend the other entites from that. Hope it helps!

并且方法在实体中声明，这样您就不需要监听器，并且如果您需要更通用的方法，您可以使BaseEntity保留该方法并从中扩展其他entite。希望能帮助到你！

#4

There's a great answer already in this thread but everything changes. Now there're entity listeners classes in Doctrine: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#entity-listeners-class

在这个帖子中已经有了一个很好的答案，但一切都在改变。现在Doctrine中有实体监听器类：http：//docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#entity-listeners-class

So you can add an annotation to your entity like:

因此，您可以为实体添加注释，如：

/**
 * @ORM\EntityListeners({"App\Entity\Listener\PhotoListener"})
 * @ORM\Entity(repositoryClass="App\Repository\PhotoRepository")
 */
class Photo 
{
    // Entity code here...
}

And create a class like this:

并创建一个这样的类：

class PhotoListener
{        
    private $container;

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

    /** @ORM\PreRemove() */
    public function preRemoveHandler(Photo $photo, LifecycleEventArgs $event): void
    {
         // Some code here...
    }
}

Also you should define this listener in services.yml like that:

你也应该在services.yml中定义这个监听器：

photo_listener:
  class: App\Entity\Listener\PhotoListener
  public: false
  autowire: true
  tags:
    - {name: doctrine.orm.entity_listener}

#1