Question

此代码：

$builder->select('p')
    ->from('ProProposalBundle:Proposal', 'p')
    ->leftJoin('ProProposalBundle:Proposal:Vote', 'v')
    ->leftJoin('ProUserBundle:User', 'u')
    ->andWhere('v.proposal = p')
    ->andWhere('v.user = u')
    ->andWhere('v.decision = "in_favor" OR v.decision = "against"')
    ->andWhere('u = :user')
    ->setParameter('user', $options['user'])
    ->andWhere('p.community = :community')
    ->setParameter('community', $community)
    ->andWhere('p.archived = :archived')
    ->setParameter('archived', $options['archived'])
    ->leftJoin('p.convocation', 'c')
    ->andWhere("p.convocation IS NULL OR c.status = '" . Convocation::STATUS_PENDING . "'");

    return $builder->getQuery()->execute();

返回错误：

[Syntax Error] line 0, col 106: Error: Expected Literal, got 'JOIN'

这是形成的查询：

SELECT p FROM ProProposalBundle:Proposal p LEFT JOIN ProProposalBundle:Proposal:Vote v LEFT JOIN ProUserBundle:User u LEFT JOIN p.convocation c WHERE v.proposal = p AND v.user = u AND (v.decision = "in_favor" OR v.decision = "against") AND u = :user AND p.community = :community AND (p.convocation IS NULL OR c.status = 'pending') ORDER BY p.created desc

LEFT JOIN缺少ON或WITH条件。问题是：我在DQL查询中做错了什么？我错了leftJoin()方法吗？

Answer 1

Doctrine ORM需要您告诉哪个关系已加入，而不是实体本身（您使用p.convocation做得很好）：

$builder->select('p')
    ->from('ProProposalBundle:Proposal', 'p')
    ->leftJoin('ProProposalBundle:Proposal\Vote', 'v', 'WITH', 'v.proposal = p AND v.user = :user AND (v.decision = :in_favor OR v.decision = :against)')
    ->setParameter('user', $options['user'])
    ->setParameter('in_favor', 'in_favor')
    ->setParameter('against', 'against')
    ->andWhere('p.community = :community')
    ->setParameter('community', $community)
    ->andWhere('p.archived = :archived')
    ->setParameter('archived', $options['archived'])
    ->leftJoin('p.convocation', 'c')
    ->andWhere("p.convocation IS NULL OR c.status = :pending")
    ->setParameter('pending', Convocation::STATUS_PENDING);

return $builder->getQuery()->execute();

编辑：我在评论时反转了投票关系并删除了无用的WHERE子句（Doctrine自动解析了JOIN ON子句。我还在可选参数中传递了一些关于连接的WHERE子句（在DQL中为WITH）。

edit2 ：投标与投票无关，不确定是否有效。

edit3 ：最佳做法是对WHERE子句中的所有值使用setParameter。

DQL - leftJoin（）错误：预期文字，得到'加入'

1 个答案: