"无效的路径表达式.必须是 StateFieldPathExpression"在具有非相关实体的查询构建器中

问题描述

我有四个实体:OfficialDocument、Media、NMediaStatus 和 NMediaType.我正在尝试翻译此 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 Query Builder，结果如下:

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('CompanyRegisterCompanyBundleEntityOfficialDocument', 'od');
    $qb->leftJoin('CommonMediaBundleEntityMedia', 'md', DoctrineORMQueryExprJoin::WITH, 'od.media = md.id');
    $qb->leftJoin('CommonMediaBundleEntityNMediaStatus', 'nms', DoctrineORMQueryExprJoin::WITH, 'od.status = nms.id');
    $qb->leftJoin('CommonMediaBundleEntityNMediaType', 'nmt', DoctrineORMQueryExprJoin::WITH, 'od.type = nmt.id');

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

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

但是每当我从控制器调用该函数时，我都会收到此错误:

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

[语义错误] 'media, od.type,' 附近的第 0 行第 10 列:错误:无效的路径表达式.必须是 StateFieldPathExpression.

[1/2] QueryException: SELECT od.media, od.type, od.status, md.url,nms.name, nmt.name FROMCompanyRegisterCompanyBundleEntityOfficialDocument od LEFT JOINCommonMediaBundleEntityMedia md WITH od.media = md.id LEFT JOINCommonMediaBundleEntityNMediaStatus nms WITH od.status = nms.id左连接 CommonMediaBundleEntityNMediaType 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 CompanyRegisterCompanyBundleEntityOfficialDocument od LEFT JOIN CommonMediaBundleEntityMedia md WITH od.media = md.id LEFT JOIN CommonMediaBundleEntityNMediaStatus nms WITH od.status = nms.id LEFT JOIN CommonMediaBundleEntityNMediaType nmt WITH od.type = nmt.id WHERE od.company = ?1

OfficialDocument 与其他三个实体相关，但由于我不需要这些实体中的 reversedBy，所以我认为这是导致错误的原因，或者可能不是，不确定.无论如何，有什么建议或帮助来解决这个问题吗?

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:我正在使用最新的 Symfony2 和 Doctrine2，如果您需要查看我的实体，它们是:官方文档、媒体、NMediaStatus, NMediaType

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

我自己回答，因为我找到了解决方法:

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，所以我需要添加 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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