Symfony在Preupdate学说的听众中冲洗

Question

嗨，我有一个预科师和preupdate侦听器：

<?php
namespace FMAppBundleEventListener;
use DoctrineORMEventLifecycleEventArgs;
use FMAdminBundleEntityAddressDeliveryAddress;
class DeliveryAddressListener
{
    /**
     * @param LifecycleEventArgs $args
     */
    public function prePersist(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        if(!$entity instanceof DeliveryAddress){
            return;
        }
        $this->addNameToUser($args);
        $this->addPostalToUser($args);
    }
    /**
     * @param LifecycleEventArgs $args
     */
    public function preUpdate(LifecycleEventArgs $args)
    {
        $entity = $args->getEntity();
        if(!$entity instanceof DeliveryAddress){
            return;
        }
        $this->addPostalToUser($args);
    }
    /**
     * @param LifecycleEventArgs $args
     */
    public function addNameToUser(LifecycleEventArgs $args)
    {
        /** @var DeliveryAddress $deliveryAdress */
        $deliveryAdress = $args->getEntity();
        $user = $deliveryAdress->getOwner();
        if(empty($user->getFirstName())) $user->setFirstName($deliveryAdress->getFirstName());
        if(empty($user->getLastName())) $user->setLastName($deliveryAdress->getLastName());
    }
    /**
     * @param LifecycleEventArgs $args
     */
    public function addPostalToUser(LifecycleEventArgs $args)
    {
        /** @var DeliveryAddress $deliveryAdress */
        $deliveryAdress = $args->getEntity();
        $user = $deliveryAdress->getOwner();
        $user->setPostalCode($deliveryAdress->getZipCode());
    }
}

service.yml：

delivery_address.listener:
    class: FMAppBundleEventListenerDeliveryAddressListener
    tags:
        - { name: doctrine.event_listener, event: prePersist }
        - { name: doctrine.event_listener, event: preUpdate }

预科派工作正常。但是，预定期不会持续任何东西。

当我在我的 addpostalTouser（）函数中添加此代码时，我的nginx服务器崩溃：

$args->getEntityManager()->persist($deliveryAdress);
$args->getEntityManager()->flush();

Answer 1

您的问题是在此事件中不允许更改更新实体的关联。因此，更改交货address的用户协会将不起作用。

请参阅文档

您可以使用onflush侦听器来做到这一点 - 这是更多的工作，但会做您追求的事情。