Question

我正在从XML Feed反序列化实体。该实体已具有ID（从XML读取）。

我试图在持久化和刷新之前合并实体（将其保存到数据库中）。我需要合并实体，因为它可能已经存在于数据库中，如果是这样，我需要它来更新而不是验证失败。

这是我的代码：

<?php

// build the MgLeague from xml
$league = $this->serializer->deserialize(
    $xml, 
    'Acme\Website\Entity\MgLeague',
    'xml'
);

if ($league)
{
    // merge the league
    $league = $this->em->merge($league);

    // validate
    if (0 === count($this->validator->validate($league)))
    {
        $this->em->persist($league);
        $this->em->flush();
    }
}

这是我收到的错误：

PHP Fatal error:  Call to undefined method Doctrine\ORM\UnitOfWork::newInstance() in /Website/vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php on line 1457
PHP Stack trace:
PHP   1. {main}() /Website/app/console:0
PHP   2. Symfony\Component\Console\Application->run() /Website/app/console:22
PHP   3. Symfony\Bundle\FrameworkBundle\Console\Application->doRun() /Website/vendor/symfony/src/Symfony/Component/Console/Application.php:118
PHP   4. Symfony\Component\Console\Application->doRun() /Website/vendor/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php:75
PHP   5. Symfony\Component\Console\Command\Command->run() /Website/vendor/symfony/src/Symfony/Component/Console/Application.php:194
PHP   6. Mahango\WebServiceBundle\Command\InsertLeaguesCommand->execute() /Website/vendor/symfony/src/Symfony/Component/Console/Command/Command.php:224
PHP   7. Doctrine\ORM\EntityManager->merge() /Website/src/Mahango/WebServiceBundle/Command/InsertLeaguesCommand.php:131
PHP   8. Doctrine\ORM\UnitOfWork->merge() /Website/vendor/doctrine/lib/Doctrine/ORM/EntityManager.php:531
PHP   9. Doctrine\ORM\UnitOfWork->doMerge() /Website/vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php:1378

Fatal error: Call to undefined method Doctrine\ORM\UnitOfWork::newInstance() in /Website/vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php on line 1457

Call Stack:
    0.0003     632280   1. {main}() /Website/app/console:0
    0.0133    2936544   2. Symfony\Component\Console\Application->run() /Website/app/console:22
    0.0151    3192136   3. Symfony\Bundle\FrameworkBundle\Console\Application->doRun() /Website/vendor/symfony/src/Symfony/Component/Console/Application.php:118
    0.0538    7941912   4. Symfony\Component\Console\Application->doRun() /Website/vendor/symfony/src/Symfony/Bundle/FrameworkBundle/Console/Application.php:75
    0.0552    7941912   5. Symfony\Component\Console\Command\Command->run() /Website/vendor/symfony/src/Symfony/Component/Console/Application.php:194
    0.0816   13131288   6. Mahango\WebServiceBundle\Command\InsertLeaguesCommand->execute() /Website/vendor/symfony/src/Symfony/Component/Console/Command/Command.php:224
    0.4149   13519208   7. Doctrine\ORM\EntityManager->merge() /Website/src/Mahango/WebServiceBundle/Command/InsertLeaguesCommand.php:131
    0.4149   13519208   8. Doctrine\ORM\UnitOfWork->merge() /Website/vendor/doctrine/lib/Doctrine/ORM/EntityManager.php:531
    0.4149   13519424   9. Doctrine\ORM\UnitOfWork->doMerge() /Website/vendor/doctrine/lib/Doctrine/ORM/UnitOfWork.php:1378

它在我看来就像一个学说错误。

我正在使用Symfony2（版本2.0.12）和Doctrine（版本2.1.6）。

Answer 1

是的，这是一个学说错误。这是错误报告：

http://www.doctrine-project.org/jira/browse/DDC-1638

..这是修复：

https://github.com/doctrine/doctrine2/commit/affa6feb8aa207bf74406a4dd20adad6978f0f1e#diff-0

Doctrine和Symfony2无法合并新实体EntityManager #incin（）

1 个答案: