根据另一个实体字段值查询一个实体

Query one entity according to another joined entity field values

我在两个实体之间有这种 OneToMany 关系:Sculpture(1) 和 Image(n ).我的目标是查询所有 Image.featured 都设置为 0Sculptures。如果一个 Sculpture 有至少一个 Imagefeatured = 1,它不应该被查询检索到(根据设计,无论如何只能显示一个雕塑图像)。

生成的表格如下:

CREATE TABLE IF NOT EXISTS `image` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `sculpture_id` int(11) DEFAULT NULL,
  `nom` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `featured` tinyint(1) NOT NULL,
  `type` enum('mini','normal') COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`),
  KEY `IDX_C53D045FB2720858` (`sculpture_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

CREATE TABLE IF NOT EXISTS `sculpture` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `titre` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `reference` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `largeur` int(11) NOT NULL,
  `hauteur` int(11) NOT NULL,
  `annee` varchar(4) COLLATE utf8_unicode_ci NOT NULL,
  `matiere` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
  `active` tinyint(1) NOT NULL,
  `creation` datetime NOT NULL,
  `description` varchar(255) COLLATE utf8_unicode_ci DEFAULT NULL,
  `hits` int(11) NOT NULL,
  `taille` enum('xs','s','m','l','xl') COLLATE utf8_unicode_ci DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

ALTER TABLE `image`
  ADD CONSTRAINT `FK_C53D045FB2720858` FOREIGN KEY (`sculpture_id`) REFERENCES `sculpture` (`id`);

我尝试使用此存储库方法查询 Sculpture 实体:

class SculptureRepository extends EntityRepository
{
    public function findByFeatured($featured)
    {
        $query = $this->createQueryBuilder('s')
            ->leftJoin('AppBundle\Entity\Image', 'i', 'WITH', 'i.sculpture = s.id')
            ->where('i.featured = :featured')
            ->setParameter('featured', $featured)
            ->orderBy('s.id', 'DESC')
            ->groupBy('s')
            ->getQuery()
        ;

        return $query->getResult();
    }
}

并使用此存储库方法查询 Image 实体:

class ImageRepository extends EntityRepository
{
    public function findNoFeatured()
    {
        $query = $this->createQueryBuilder('i')
            ->where('i.featured = 0')
            ->groupBy('i.sculpture')
            ->getQuery();

        return $query->getResult();

    }
}

但是这些 return 都是 Sculptures,而我只想要那些没有特色的 Image

有什么想法吗?

谢谢!

像这样:

$query = $this->createQueryBuilder('s, count(i.id) as featured_image_count')
    ->leftJoin('AppBundle\Entity\Image', 'i', 'WITH', 'i.sculpture = s.id')
    ->where('i.featured = :featured')
    ->setParameter('featured', 1)
    ->orderBy('s.id', 'DESC')
    ->groupBy('s')
    ->having('featured_image_count < 1')
    ->getQuery()
;

或者,您可以使用子查询来获取特征 == 1 的所有图像,然后您可以使用 not in 来消除所有这些雕塑,例如:

$qb = $this->createQueryBuilder();
$qb2 = $qb;
$qb2->select('i.sculptureId')->distinct(true)
->from('AppBundle\Entity\Image', 'i')
->where('i.featured = 1');

$qb = $this->createQueryBuilder();
$qb->select('s')
->from('AppBundle\Entity\Sculpture', 's')
->where($qb->expr()->notIn('s.id', $qb2->getDQL())
);

$result = $qb->getQuery()->getResult();

我还没有对这些进行任何语法检查,但这两种方法都可以正常工作。