Question

这里有一些学说专家，他能解释一下，为什么这些DQL不会在Tally实体上初始化 tallyRevs 字段？我想，当我向他们提取TallyRevs（所有者方）和fetchJoin Tally实体时，该字段 tallyRevs 将被初始化。我究竟做错了什么？我需要通过DQL根据某些条件选择 TallyRev ，因为它是双向关联，我希望它也可以从其他（Tally.tallyRevs）方面初始化。

Screen of dump

<?php


/**
 * @ORM\Entity
 * @ORM\Table(name="v3_overview_calloff_tally")
 */
class Tally
{

    /**
     * @var int
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var TallyRev[]|Collection
     * @ORM\OneToMany(targetEntity="STI\Model\Entity\V3\Overview\CallOff\TallyRev", mappedBy="tally")
     */
    private $tallyRevs;
}


/**
 * @ORM\Entity
 * @ORM\Table(name="v3_overview_calloff_tallyrev")
 */
class TallyRev
{

    /**
     * @var int
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @var int
     * @ORM\Column(type="integer", nullable=false)
     */
    private $revision;

    /**
     * @var Tally
     * @ORM\ManyToOne(targetEntity="STI\Model\Entity\V3\Overview\CallOff\Tally", inversedBy="tallyRevs")
     * @ORM\JoinColumn(name="tally_id", referencedColumnName="id", nullable=false)
     */
    private $tally;
}

以下是一些存储库代码：

$qb = $repository->createQueryBuilder();
$qb
    ->select('tallyRev')
    ->from(TallyRev::class, 'tallyRev', 'tallyRev.id')
    // complicated filtering, this is just an example
    ->andWhere($qb->expr()->in('tallyRev.revision', ':rev'))
    ->setParameter('rev', $rev)
;
$tallyRevs = $qb->getQuery()->getResult();

$ids = array_keys($tallyRevs);

$qb2 = $repository->createQueryBuilder();
$qb2
    ->select('partial tallyRev.{id}')
    ->from(TallyRev::class, 'tallyRev', 'tallyRev.id')
    ->andWhere($qb2->expr()->in('tallyRev.id', ':ids'))
    ->setParameter('ids', $ids)
    ->leftJoin('tallyRev.tally', 'tally')
    ->addSelect('tally')
;
$qb2->getQuery()->getResult();

我知道，我可以像这样从Tally一边写DQL：

$qb
    ->select('tally')
    ->from(Tally::class, 'tally', 'tally.id')
    ->leftJoin('tally.tallyRev', 'tallyRev')
    ->addSelect('tallyRev')
    ->andWhere($qb->expr()->in('tallyRev.revision', ':rev'))
    ->setParameter('rev', $revs)
;

Answer 1

如果你想在获取tallyRev时获取连接数，你应该在第一个qb中写这样的东西，然后删除qb2

->select(['tallyRev', 'tally'])
->from(TallyRev::class, 'tallyRev', 'tallyRev.id')
->join('tallyRev.tally', 'tally')
// complicated filtering, this is just an example
->andWhere($qb->expr()->in('tallyRev.revision', ':rev'))
->setParameter('rev', $rev)

Doctrine2，DQL，关联未初始化

1 个答案: