教义2级遗产映射

时间:2015-04-23 13:50:31

标签: php symfony doctrine-orm doctrine yaml

我试图找出如何正确映射我的实体,以便我可以制作Doctrine 2类表继承(man page

所以我尝试了很多不同的解决方案,但我似乎无法使用命令行工具验证我的模型(doctrine:schema:validate)

所以这就是我尝试过的。我没有改变父类,所以我将它留在这里。

Api\TestBundle\Entity\Item:
type: entity
table: items
inheritanceType: JOINED
discriminatorColumn:
  name: type
  type: string
  nullable: false
  length: 32
  fixed: false
  comment: ''
discriminatorMap:
    item_property_facebook: ItemPropertyFacebook
id:
    id:
        type: integer
        nullable: false
        unsigned: false
        comment: ''
        id: true
        generator:
            strategy: AUTO
fields:
    bundledType:
        type: string
        nullable: false
        length: 32
        fixed: false
        comment: ''
        column: bundled_type
lifecycleCallbacks: {  }

对于儿童班,我先放了另一个id:

Api\TestBundle\Entity\ItemPropertyFacebook:
type: entity
table: item_property_facebook
id:
    id:
        type: integer
        nullable: false
        unsigned: false
        comment: ''
        id: true
        generator:
            strategy: AUTO
fields:
    account_id:
        type: integer
lifecycleCallbacks: {  }

显然,我得到了:

Duplicate definition of column 'id' on entity 'Api\TestBundle\Entity
\ItemPropertyFacebook' in a field or discriminator column mapping.

所以我尝试删除孩子中的id定义,然后我得到:

No identifier/primary key specified for Entity "Api\TestBundle\Entit
y\ReferenceItemPropertyFacebook". Every Entity must have an identifier/prim
ary key.

所以我绝对不知道。在文档中,他们只是设置了基本的东西而不是id,我在网上找不到任何东西,因为我可能没有很好地表达它。我读到了关于关键的问题,但是当我尝试过它时,Doctrine告诉我同样的事情

No identifier/primary key specified for Entity "Api\TestBundle\Entit
y\ReferenceItemPropertyFacebook". Every Entity must have an identifier/prim
ary key.

所以,如果你有任何线索,我将不胜感激。非常感谢!

1 个答案:

答案 0 :(得分:0)

我不熟悉yaml代,但是当我使用php注释尝试你的结构时,它适用于我,重复的id列没有问题:

/**
 * @ORM\Entity
 * @ORM\Table(name="items")
 * @ORM\InheritanceType("JOINED")
 * @ORM\DiscriminatorColumn(name="type", type="string")
 * @ORM\DiscriminatorMap({"item" = "Item", "item_property_facebook" = "ItemPropertyFacebook"})
 */
class Item {

    /**
     * @ORM\Column
     * @ORM\Id
     * @ORM\GeneratedValue()
     */
    protected $id;

    /**
     * @ORM\Column(type="string")
     */
    protected $bundledType;
}

/**
 * @ORM\Entity
 * @ORM\Table(name="item_property_facebook")
 */
class ItemPropertyFacebook extends Item {

    /**
     * @var
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue()
     */
    protected $id;

    /**
     * @ORM\Column(type="integer")
     */
    protected $account_id;
}

将生成那些sql命令:

CREATE TABLE items (id VARCHAR(255) NOT NULL, bundledType VARCHAR(255) NOT NULL, type VARCHAR(255) NOT NULL, PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE = InnoDB;
CREATE TABLE item_property_facebook (id VARCHAR(255) NOT NULL, account_id INT NOT NULL, PRIMARY KEY(id)) DEFAULT CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE = InnoDB;
ALTER TABLE item_property_facebook ADD CONSTRAINT FK_B8C39352BF396750 FOREIGN KEY (id) REFERENCES items (id) ON DELETE CASCADE

唯一的区别是,我必须将"item = "Item"添加到DiscriminatorMap。

此外,ID定义中是否应该有id: true行?对我来说似乎多余。