英文:
Same Doctrine ORM listener for multiple entitites
问题
我会快速回答。如果两个不同的实体都扩展了相同的EntityInterface接口，并且你的postPersist事件监听器的函数签名如下：
public function postPersist(EntityInterface $entity, LifecycleEventArgs $event = null)
那么你可以使用上面提供的XML配置使同一个监听器类响应两个不同的实体的postPersist事件。在XML配置中，你为每个实体添加了相应的标签，如下所示：
<service id="app.entity.my_listener"
class="App\Entity\MyListener" lazy="true">
<tag name="doctrine.orm.entity_listener" entity="App\Entity\Entity1" event="postPersist"/>
<tag name="doctrine.orm.entity_listener" entity="App\Entity\Entity2" event="postPersist"/>
<tag name="kernel.event_subscriber" />
</service>
这样配置后，你的MyListener类将能够响应Entity1和Entity2两个实体的postPersist事件，因为它们都实现了EntityInterface接口。
英文:
So I will be quick. Let's say you have a postPersist event. Can you make the same listener class respond to two different entities if they extend same interface?
<service id="app.entity.my_listener"
class="App\Entity\MyListener" lazy="true">
<tag name="doctrine.orm.entity_listener" entity="App\Entity\Entity1" event="postPersist"/>
<tag name="doctrine.orm.entity_listener" entity="App\Entity\Entity2" event="postPersist"/>
<tag name="kernel.event_subscriber" />
</service>
Keep in mind, both entities extend the same EntityInterface so my function signature takes:
public function postPersist(EntityInterface $entity, LifecycleEventArgs $event = null)
For "reasons" I can not validate this myself, but wondered if someone else is able to give an answer?
答案1
得分: 1
如果您使用Doctrine生命周期监听器：https://symfony.com/doc/current/doctrine/events.html#doctrine-lifecycle-listeners
您可以使您的情况工作。因为在这种情况下，它们不会在特定实体上触发。这由您决定。
因此，如果监听器只应响应特定接口，正如@Bossman在他的评论中所说，您可以这样做：
public function postPersist(LifecycleEventArgs $args): void
{
$entity = $args->getObject();
// 如果此监听器仅适用于某些实体类型，
// 请尽早添加一些代码来检查实体类型
if (!$entity instanceof EntityInterface) {
return;
}
$entityManager = $args->getObjectManager();
// ... 使用Product实体进行一些操作
}
希望这能帮助您。
英文:
If you use doctrine lifecycle listener :
https://symfony.com/doc/current/doctrine/events.html#doctrine-lifecycle-listeners
You can make your case work. Since in this case they do not trigger on a specific entity. It is on your hand.
So if the listener should respond to only a specific interface.
As @Bossman said in his comment, you can do :
public function postPersist(LifecycleEventArgs $args): void
{
$entity = $args->getObject();
// if this listener only applies to certain entity types,
// add some code to check the entity type as early as possible
if (!$entity instanceof EntityInterface) {
return;
}
$entityManager = $args->getObjectManager();
// ... do something with the Product entity
}
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