php – 使用连接删除Doctrine QueryBuilder

我正在尝试使用Doctrine QueryBuilder来执行以下SQL查询：

DELETE php FROM product_hole_pattern php
INNER JOIN hole_pattern hp ON php.hole_pattern_id = hp.id
INNER JOIN hole_pattern_type hpt ON hp.hole_pattern_type_id = hpt.id
WHERE php.product_id = 4 AND hpt.slug='universal';

我有这个

$qb = $this->entityManager->createQueryBuilder();
$query = $qb->delete('\SANUS\Entity\ProductHolePattern', 'php')
  ->innerJoin('php.holePattern', 'hp')
  ->innerJoin('hp.holePatternType', 'hpt')
  ->where('hpt.slug = :slug AND php.product=:product')
  ->setParameter('slug','universal')
  ->setParameter('product',$this->id)
  ->getQuery();

但我得到：

[Semantical Error] line 0, col 50 near 'hpt.slug = :slug': Error: 'hpt' is not defined.

错误消息附带的DQL是：

DELETE \SANUS\Entity\ProductHolePattern php 
WHERE hpt.slug = :slug AND php.product=:product

所以连接似乎完全被省略了.

解决方法:

使用IN条件而不是迭代运行查询可能更好.

$ids = $this->createQueryBuilder('product')
->join('..your joins..')
->where('..your wheres..')
->select('product.id')
->getQuery()->getResult();

$this->createQueryBuilder('product')
    ->where('product.id in (:ids)')
    ->setParameter('ids', $ids)
    ->delete()
    ->getQuery()
    ->execute();

>好处：运行速度更快,无需迭代
>缺点：你无法挂钩到preRemove

至于激烈的“把它放在哪里”的辩论,如果你愿意,敢于把它放在控制器中.这完全取决于你.但是,如果将代码置于专用的doctrine存储库类中,将来可能对您更有用.它应该非常容易,并且易于更改/维护.

标签：doctrine-orm,query-builder,php,mysql
来源： https://codeday.me/bug/20190928/1825119.html