Doctrine2更新了多对多关系

时间:2012-01-22 23:28:05

标签: orm symfony doctrine-orm

我与产品实体和功能实体的多对多关系 产品实体:

/**
 * @ORM\ManyToMany(targetEntity="Feature")
 * @ORM\JoinTable(name="Product_Feature",
 *      joinColumns={@ORM\JoinColumn(name="Product_id", referencedColumnName="id")},
 *      inverseJoinColumns={@ORM\JoinColumn(name="Feature_id", referencedColumnName="id")}
 *      )
 */
private $features;

功能实体:

/**
 * @ORM\ManyToMany(targetEntity="Product", mappedBy="features")
 * @ORM\OrderBy({"position" = "ASC"})
 */
private $products;

ProductRepository.php:

public function updateFeatures($id, $featuresIds)
    {
        return $this->getEntityManager()->createQueryBuilder()
                ->update('TestCatalogBundle:Product', 'p')
                ->set('p.features', ':features')
                ->where('p.id = :id')
                ->setParameter('features', $featuresIds)
                ->setParameter('id', $id)
                ->getQuery()
                ->getResult();
    }

但是当我调用updateFeatures时,我收到错误:

  

features =:features':错误:无效的PathExpression。   StateFieldPathExpression或SingleValuedAssociationField预期

如何更新Product_Feature表?此外,我无法按产品ID删除Product_Feature中的所有功能 我用下一个方式更改了控制器:

    $em = $this->getDoctrine()->getEntityManager();

    $features = $em->getRepository('TestCatalogBundle:Feature')->findBy(array('id' => $featureIds));
    $product = $em->getRepository('TestCatalogBundle:Product')->find($id);

    $product->getFeatures()->clear();
    foreach ($features as $feature) {
        $product->addFeature($feature);
    }
    $em->persist($product);
    $em->flush();

但是如果我使用本机sql,我需要2个查询来删除功能并插入新功能。但在这里我需要2个选择查询。也许我做错了这个任务?

1 个答案:

答案 0 :(得分:2)

你这样做是错误的。您应该阅读文档的这一章:Working with associations。您应该在Product类的$ features字段中添加“inversedBy”关键字。

当你有双向的多对多关系时,通常的做法是:

$product->getFeatures()->add($feature); // Or $product->setFeatures($features);
$feature->getProducts()->add($product);
$em->persist($product);
$em->persist($feature);
$em->flush();
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