如何在 Doctrine 2 prePersist 方法中持久保存新实体？

发布于 2024-12-10 21:35:00 字数 858 浏览 0 评论 0原文

我有一个带有 @HasLifecycleCallbacks 的实体，用于定义 prePersist 和 preUpdate 方法。

我的 PrePersist 方法是

/**
 * @ORM\OneToMany(targetEntity="Field", mappedBy="service", cascade={"persist"}, orphanRemoval=true)
 */
protected $fields;

/**
 * @PrePersist()
 */
public function populate() {
    $fieldsCollection = new \Doctrine\Common\Collections\ArrayCollection();

    $fields = array();
    preg_match_all('/%[a-z]+%/', $this->getPattern(), $fields);
    if (isset($fields[0])) {
        foreach ($fields[0] as $field_name) {
            $field = new Field();
            $field->setField($field_name);
            $field->setService($this);
            $fieldsCollection->add($field);
        }
        $this->setFields($fieldsCollection);
    }
}

我希望这可以持久化我的 Field 实体，但我的表是空的。我应该使用 EntityManager 吗？我如何在我的实体中检索它？

原文

I've a Entity with @HasLifecycleCallbacks for define prePersist and preUpdate method.

My PrePersist method is

/**
 * @ORM\OneToMany(targetEntity="Field", mappedBy="service", cascade={"persist"}, orphanRemoval=true)
 */
protected $fields;

/**
 * @PrePersist()
 */
public function populate() {
    $fieldsCollection = new \Doctrine\Common\Collections\ArrayCollection();

    $fields = array();
    preg_match_all('/%[a-z]+%/', $this->getPattern(), $fields);
    if (isset($fields[0])) {
        foreach ($fields[0] as $field_name) {
            $field = new Field();
            $field->setField($field_name);
            $field->setService($this);
            $fieldsCollection->add($field);
        }
        $this->setFields($fieldsCollection);
    }
}

I hoped that this could persist my Field entities, but my table is empty.
Should I use an EntityManager? How can I retrieve it within my Entity?

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记忆消瘦 2024-12-17 21:35:01

您需要使用 LifecycleEventArgs 来获取 EntityManager 并能够在 prePersist 方法中持久保存实体。您可以这样检索它：

<?php
use Doctrine\Common\Persistence\Event\LifecycleEventArgs;

class MyEventListener
{
    public function preUpdate(LifecycleEventArgs $args)
    {
        $entity = $args->getObject();
        $entityManager = $args->getObjectManager();

        // perhaps you only want to act on some "Product" entity
        if ($entity instanceof Product) 
        {
            // do something with the Product
        }
    }
}

You need to use the LifecycleEventArgs to get EntityManager and be able to persist Entity in prePersist method. You can retrieve it like that :

<?php
use Doctrine\Common\Persistence\Event\LifecycleEventArgs;

class MyEventListener
{
    public function preUpdate(LifecycleEventArgs $args)
    {
        $entity = $args->getObject();
        $entityManager = $args->getObjectManager();

        // perhaps you only want to act on some "Product" entity
        if ($entity instanceof Product) 
        {
            // do something with the Product
        }
    }
}

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