Doctrine 描述了使用 xml 将外键作为主键的映射

Question

我找到了如何使用属性来做到这一点https://www.doctrine-project.org/projects/doctrine-orm/en/3.2/tutorials/composite-primary-keys.html#use-case-2-simple -衍生身份，但是有没有办法对 XML 做同样的事情？

我尝试过这样

        <id name="user_id" type="string" />
        <one-to-one field="product" target-entity="App\Entity\User" orphan-removal="true">
            <cascade>
                <cascade-persist/>
                <cascade-remove/>
            </cascade>

            <join-column name="user_id" referenced-column-name="id" on-delete="CASCADE" />
        </one-to-one>

并且失败并出现错误

 Property App\Entity\Address::$user_id does not exist 

我也这样尝试过

 <one-to-one field="product" target-entity="App\Entity\User" orphan-removal="true">
            <cascade>
                <cascade-persist/>
                <cascade-remove/>
            </cascade>
             <id name="user_id" type="string" />
            <join-column name="user_id" referenced-column-name="id" on-delete="CASCADE" />
        </one-to-one>

错误是

 No identifier/primary key specified for Entity "App\Entity\Address". Every Entity must have an identifier/primary key.  

Answer 1

我找到了解决方案，关键是添加

association-key="true"

，就像这样

  <id name="user" association-key="true" />
        <one-to-one field="product" target-entity="App\Entity\User" orphan-removal="true">
            <cascade>
                <cascade-persist/>
                <cascade-remove/>
            </cascade>

            <join-column name="user_id" referenced-column-name="id" on-delete="CASCADE" />
        </one-to-one>