“无效的路径表示”必须是StateFieldPathExpression“在与非相关实体的查询构建器中

问题描述

我有四个实体： OfficialDocument ，媒体， NMediaStatus 和 NMediaType 。我试图翻译这个SQL：

I have four entities: OfficialDocument, Media, NMediaStatus and NMediaType. I'm trying to translate this SQL:

SELECT od.media, od.type, od.status, md.url, nms.name 
    FROM official_document od 
    LEFT JOIN media md ON od.media = md.id 
    LEFT JOIN n_media_status nms ON od.status = nms.id
    WHERE od.company = 9 

到Doctrine查询生成器，这是结果：

to Doctrine Query Builder and this is the result:

public function findOfficialDocument($company_id) {
    $qb = $this->getEntityManager()->createQueryBuilder();

    $qb->select('od.media', 'od.type', 'od.status', 'md.url', 'nms.name', 'nmt.name');
    $qb->from('Company\RegisterCompanyBundle\Entity\OfficialDocument', 'od');
    $qb->leftJoin('Common\MediaBundle\Entity\Media', 'md', \Doctrine\ORM\Query\Expr\Join::WITH, 'od.media = md.id');
    $qb->leftJoin('Common\MediaBundle\Entity\NMediaStatus', 'nms', \Doctrine\ORM\Query\Expr\Join::WITH, 'od.status = nms.id');
    $qb->leftJoin('Common\MediaBundle\Entity\NMediaType', 'nmt', \Doctrine\ORM\Query\Expr\Join::WITH, 'od.type = nmt.id');

    $qb->where('od.company = ?1');
    $qb->setParameter(1, $company_id);

    return $qb->getQuery()->getResult();
}

但是，任何时候我从我的控制器调用这个函数都会得到这个错误： / p>

But any time I call the function from my controller I get this error:

[1/2] QueryException：SELECT od.media，od.type，od.status，md.url，
nms。 name，nmt.name FROM
Company\RegisterCompanyBundle\Entity\OfficialDocument od LEFT JOIN
Common\MediaBundle\Entity\Media md WITH od.media = md.id LEFT JOIN
Common\MediaBundle\Entity\NMediaStatus nms WITH od.status = nms.id
LEFT JOIN Common\MediaBundle\Entity\NMediaType nmt WITH od.type =
nmt.id WHERE od.company =？1

[1/2] QueryException: SELECT od.media, od.type, od.status, md.url, nms.name, nmt.name FROM Company\RegisterCompanyBundle\Entity\OfficialDocument od LEFT JOIN Common\MediaBundle\Entity\Media md WITH od.media = md.id LEFT JOIN Common\MediaBundle\Entity\NMediaStatus nms WITH od.status = nms.id LEFT JOIN Common\MediaBundle\Entity\NMediaType nmt WITH od.type = nmt.id WHERE od.company = ?1

OfficialDocument 与其他三个实体，但是由于我不需要这些实体中的 reverseBy ，所以我很难这会导致错误，或者也可能不知道。无论如何，任何建议或帮助来解决这个问题？

OfficialDocument is related to the other three entities, but since I don't need the reversedBy in those entities then I tough this is causing the error, or maybe not, not sure about it. Anyway, any advice or help to fix this issue?

PS：如果您需要查看我们的实体，我正在使用最新的Symfony2和Doctrine2： ，，

PS: I'm using latest Symfony2 and Doctrine2 if you need to take a look to my entities here they are: OfficialDocument, Media, NMediaStatus, NMediaType

推荐答案

我回答自己，因为我发现如何解决它：

I answer myself since I found how to fix it:

$qb->select('IDENTITY(od.media)', 'IDENTITY(od.type) AS doc_type', 'IDENTITY(od.status) AS doc_status', 'md.url', 'nms.name', 'nmt.name');

由于 od.media ， od.type ， od.status 是复合键，那么我需要添加 IDENTITY 以使查询工作并解决问题

Since od.media, od.type, od.status are composite keys then I need to add IDENTITY in order to make the query work and fix the issue

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