教义2压倒多对一协会

时间:2016-09-20 15:52:26

标签: php doctrine-orm sylius

是否可以覆盖@ManyToOne(targetEntity)

我看过this Doctrine documentation page,但没有提到如何覆盖targetEntity

这是我的代码:

namespace AppBundle\Model\Order\Entity;

use AppBundle\Model\Base\Entity\Identifier;
use AppBundle\Model\Base\Entity\Product;
use Doctrine\ORM\Mapping as ORM;
use Doctrine\ORM\Mapping\AttributeOverrides;
use Doctrine\ORM\Mapping\AttributeOverride;

/**
 * Class OrderItem
 *
 *
 * @ORM\Entity
 * @ORM\Table(name="sylius_order_item")
 * @ORM\AssociationOverrides({
 *      @ORM\AssociationOverride(
 *          name="variant",
 *          joinColumns=@ORM\JoinColumn(
 *              name="variant", referencedColumnName="id", nullable=true
 *          )
 *      )
 * })
 */
class OrderItem extends \Sylius\Component\Core\Model\OrderItem
{

    /**
     * @var
     * @ORM\ManyToOne(targetEntity="AppBundle\Model\Base\Entity\Product")
     */
    protected $product;

    /**
     * @return mixed
     */
    public function getProduct()
    {
        return $this->product;
    }

    /**
     * @param mixed $product
     */
    public function setProduct($product)
    {
        $this->product = $product;
    }
}

我能够覆盖“variant”列的定义并将此列设置为null,但我无法弄清楚如何更改targetEntity

2 个答案:

答案 0 :(得分:2)

如文档中所述,您无法更改关联的类型: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/inheritance-mapping.html#association-override

但是,您可以将targetEntity定义为接口(这似乎是默认的sylius conf),

namespace AppBundle\Entity;    
use Sylius\Component\Core\Model\ProductInterface as BaseProductInterface;
interface ProductInterface extends BaseProductInterface {}

扩展接口文件中的原始文件

doctrine:
    orm:
        resolve_target_entities:
            AppBundle\Entity\ProductInterface: AppBundle\Entity\Product

并在配置中添加映​​射

select id
from customer
where firstname in (select firstname
             from customer
             group by firstname
             having count(*)>1);

这里描述:http://symfony.com/doc/current/doctrine/resolve_target_entity.html

希望有所帮助

答案 1 :(得分:0)

使用注释时,我没有找到一种方法来覆盖关联的targetEntity值,但是使用PHP映射(Symfony中的phpstaticphp)是可行的。

https://www.doctrine-project.org/projects/doctrine-orm/en/current/reference/php-mapping.html

我们可以创建一个函数:

function updateAssociationTargetEntity(ClassMetadata $metadata, $association, $targetEntity)
{
    if (!isset($metadata->associationMappings[$association])) {
        throw new \LogicException("Association $association not defined on $metadata->name");
    }
    $metadata->associationMappings[$association]['targetEntity'] = $targetEntity;
}

并像这样使用它:

updateAssociationTargetEntity($metadata, 'product', AppBundle\Model\Base\Entity\Product::class);

这样,当Doctrine加载类AppBundle\Model\Order\Entity\OrderItem的元数据时,它首先加载父级(\Sylius\Component\Core\Model\OrderItem)元数据,然后为子类加载PHP映射,在此我们重写了关联加载父类元数据时设置的映射。

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