弗洛伊德主义倾听者的交响乐 [英] Symfony onFlush Doctrine Listener

问题描述

我有一个onFlush监听器：

Hi I have an onFlush listener:

<?php

namespace FM\AppBundle\EventListener;

use FM\AdminBundle\Entity\Address\DeliveryAddress;
use Doctrine\ORM\Event\OnFlushEventArgs;

class DeliveryAddressListener
{
    /**
     * @param OnFlushEventArgs $args
     */
    public function onFlush(OnFlushEventArgs $args)
    {
        $em = $args->getEntityManager();
        $uow = $em->getUnitOfWork();

        foreach ($uow->getScheduledEntityUpdates() as $entity) {
            if ($entity instanceof DeliveryAddress) {
                $this->addPostalToUser($entity, $args);
            }
        }
    }

    /**
     * @param DeliveryAddress  $deliveryAddress
     * @param OnFlushEventArgs $args
     */
    public function addPostalToUser(DeliveryAddress $deliveryAddress, OnFlushEventArgs $args)
    {
        $em = $args->getEntityManager();
        $user = $deliveryAddress->getOwner();

        $user->setPostalCode($deliveryAddress->getZipCode());
    }
}

service.yml：

service.yml:

delivery_address.listener:
    class: FM\AppBundle\EventListener\DeliveryAddressListener
    tags:
        - { name: doctrine.event_listener, event: onFlush }

我正在尝试将新的zipCode设置为用户。但是这似乎不起作用。

I'm trying to set the new zipCode to the User. But it does not seem to work.

即使我添加了一个 $ em-> persist（$ user）。

我正在查看此文档： http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/events.html#onflush

但我不明白我可以如何使用这个解释：

But I don't understand how I can make it works with this explanation:

如果在onFlush中创建并保存新实体，则调用EntityManager＃persist（）是不够的。你必须执行额外的调用$ unitOfWork-> computeChangeSet（$ classMetadata，$ entity）。

推荐答案

当我使用它：

// Remove event, if we call $this->em->flush() now there is no infinite recursion loop!
$eventManager->removeEventListener('onFlush', $this);

我的收听者

My Listener

namespace FM\AppBundle\EventListener;

use FM\AdminBundle\Entity\Address\DeliveryAddress;
use Doctrine\ORM\Event\OnFlushEventArgs;

class DeliveryAddressListener
{
    /**
     * @param OnFlushEventArgs $args
     */
    public function onFlush(OnFlushEventArgs $args)
    {
        $em = $args->getEntityManager();
        $uow = $em->getUnitOfWork();
        $eventManager = $em->getEventManager();

        // Remove event, if we call $this->em->flush() now there is no infinite recursion loop!
        $eventManager->removeEventListener('onFlush', $this);

        foreach ($uow->getScheduledEntityUpdates() as $entity) {
            if ($entity instanceof DeliveryAddress) {
                $this->addPostalToUser($entity, $args);
            }
        }
    }

    /**
     * @param DeliveryAddress  $deliveryAddress
     * @param OnFlushEventArgs $args
     */
    public function addPostalToUser(DeliveryAddress $deliveryAddress, OnFlushEventArgs $args)
    {
        $em = $args->getEntityManager();
        $user = $deliveryAddress->getOwner();

        $user->setPostalCode($deliveryAddress->getZipCode());
        $em->flush();
    }
}

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