Symfony 2：如何覆盖另一个bundle的repository

Question

我有两个bundle，我想在一个bundle中覆盖另一个bundle的存储库：

我有一个源bundle：SourceBundle。 我有我的覆盖bundle：OverrideBundle。

首先，在OurVendorOverrideBundle.php文件中，我添加了以下内容：

public function getParent()
{
    return 'SomeVendorSourceBundle';
}

接着我想为“SourceBundle”实体的存储库添加自定义方法。源实体是Response.php，其存储库为ResponseRepository.php。

所以我做了以下步骤：

<?php
namespace OurVendor\OverrideBundle\Repository;
use Doctrine\ORM\EntityRepository;
use SomeVendor\SourceBundle\Repository\ResponseRepository as BaseRepository;

class ResponseRepository extends BaseRepository
{
    /**
     *
     * @return array
     */
    public function getQueryExerciseAllResponsesForAllUsers($exoId)
    {
        $qb = $this->createQueryBuilder('r');
        $qb->join('r.paper', 'p')
            ->join('p.exercise', 'e')
            ->where('e.id = ?1')
            ->andWhere('p.interupt =  ?2')
            ->setParameters(array(1 => $exoId, 2 => 0));
        return $qb->getQuery();
    }
}

如果我没有在OverrideBundle中设置实体，就会出现以下错误：

The autoloader expected class "CPASimUSante\ExoverrideBundle\Entity\Response" to be defined in file "/home/www/myproject/vendor/ourvendor/override-bundle/OurVendor/OverrideBundle/Entity/Response.php". The file was found but the class was not in it, the class name or namespace probably has a typo.

SourceBundle实体是：

<?php
namespace SomeVendor\SourceBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
 * SomeVendor\SourceBundle\Entity\Response
 *
 * @ORM\Entity(repositoryClass="SomeVendor\SourceBundle\Repository\ResponseRepository")
 * @ORM\Table(name="source_response")
 */
class Response
{
  ... 
}

所以我在OverrideBundle中添加了实体：

<?php
namespace OurVendor\OverrideBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use SomeVendor\SourceBundle\Entity\Response as BaseEntity;
/**
 * SomeVendor\SourceBundle\Entity\Response
 *
 * @ORM\Entity(repositoryClass="OurVendor\OverrideBundle\Repository\ResponseRepository")
 * @ORM\Table(name="override_response")
 */
class Response extends BaseEntity
{
    public function __construct()
    {
        parent::__construct();
    }
}

但是我遇到了这个错误：

An exception occurred while executing 'SELECT u0_.id AS id0, u0_.ip AS ip1, u0_.mark AS mark2, u0_.nb_tries AS nb_tries3, u0_.response AS response4, u0_.paper_id AS paper_id5, u0_.interaction_id AS interaction_id6 FROM ujm_exoverride_response u1_ INNER JOIN ujm_paper u2_ ON u0_.paper_id = u2_.id INNER JOIN ujm_exercise u3_ ON u2_.exercise_id = u3_.id WHERE u3_.id = ? AND u2_.interupt = ?' with params ["1", 0]:

SQLSTATE[42S22]: Column not found: 1054 Unknown column 'u0_.id' in 'field list'

这似乎表明找不到表中的字段。因此我进行了更改，改成了：

<?php
namespace OurVendor\OverrideBundle\Entity;
use Doctrine\ORM\Mapping as ORM;
use SomeVendor\SourceBundle\Entity\Response as BaseEntity;
/**
 * SomeVendor\SourceBundle\Entity\Response
 *
 * @ORM\Entity(repositoryClass="OurVendor\OverrideBundle\Repository\ResponseRepository")
 * @ORM\Table(name="source_response")
 */
class Response extends BaseEntity
{
    public function __construct()
    {
        parent::__construct();
    }
}

并且它起作用了。

...但是当我重新安装捆绑包以测试是否一切正常时，我遇到了致命错误，指出source_response已经定义（确实如此）。

那么我该怎么办呢？

我还阅读过，除非源扩展了MappedSuperclass，否则无法覆盖实体，在我的情况下不是这样。

但是，如果我只想覆盖其存储库，则注定要失败吗？ 是否可能？ 如果可以，正确的方法是什么？

如果我完全删除覆盖实体的注释，我就有了：

Class "OurVendor\OverrideBundle\Entity\Response" sub class of "SomeVendor\SourceBundle\Entity\Response" is not a valid entity or mapped super class.
500 Internal Server Error - MappingException

- Overdose

Answer 1

在实体类元数据加载时，可覆盖其他捆绑包中的Doctrine映射。

事件监听器

<?php

namespace Lol\RandomBundle\EventListener;

use Doctrine\ORM\Event\LoadClassMetadataEventArgs;

class ClassMetadataListener
{
    /**
     * Run when Doctrine ORM metadata is loaded.
     *
     * @param LoadClassMetadataEventArgs $eventArgs
     */
    public function loadClassMetadata(LoadClassMetadataEventArgs $eventArgs)
    {
        $classMetadata = $eventArgs->getClassMetadata();

        if ('AnotherLol\AnotherRandomBundle\Entity\Response' === $classMetadata->name) {
            // Do whatever you want...
            $classMetadata->customRepositoryClassName = 'ThirdLol\SomeBundle\Repository\NewResponseRepository';
        }
    }
}

服务配置

services:
    lol.random.listener.class_metadata:
        class: Lol\RandomBundle\EventListener\ClassMetadataListener
        tags:
            -  { name: doctrine.event_listener, event: loadClassMetadata }

- Aistis