symfony2 Doctrine 關聯刪除問題

Question

Entity NotifyOrderCreate

/**
 * @ORM\Column(type="bigint",options={"unsigned"=true})
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
private $id;

/**
 * @ORM\OneToOne(targetEntity="Order", inversedBy="notifyCreate",cascade={"persist"})
 * @ORM\JoinColumn(name="order_id", referencedColumnName="id",onDelete="CASCADE")
 **/
private $order;

Entity Order

/**
 * @ORM\Column(type="bigint",options={"unsigned"=true})
 * @ORM\Id
 * @ORM\GeneratedValue(strategy="AUTO")
 */
private $id;

/**
 * @ORM\OneToOne(targetEntity="NotifyOrderCreate", mappedBy="order")
 **/
private $notifyCreate;

找出NotifyOrderCreate 執行remove的時候會把order也刪除掉，求怎麼破。

Answer 1

我不了解註解寫法。下面給的是yml程式碼：

oneToOne:
    order:
        targetEntity: SomeEntity
        joinColumn:
            name: some_id
            referencedColumnName: pk_id
            nullable: true
            onDelete: SET NULL

這種寫法會在刪除時把欄位設為NULL。