php - Symfony FK 约束问题

Question

所以我有一个表架构，其中包含可以成为 friend 的用户。

User:
  actAs: { Timestampable: ~ }
  columns:
    name: { type: string(255), notnull: true }
    email: { type: string(255), notnull: true, unique: true }
    nickname: { type: string(255), unique: true }
    password: { type: string(300), notnull: true }
    image: { type: string(255) }

FriendsWith:
  actAs: { Timestampable: ~ }
  columns:
    friend1_id: { type: integer, primary: true }
    friend2_id: { type: integer, primary: true }
  relations:
    User: { onDelete: CASCADE, local: friend1_id, foreign: id }
    User: { onDelete: CASCADE, local: friend2_id, foreign: id }

它正确地构建了数据库，但是当我尝试插入测试数据时，例如:

User:
  user1:
    name: Danny Gurt
    email: comy19@gmail.com
    nickname: danny
    password: test1
  user2:
    name: Adrian Soian
    email: adriansoian@gmail.com
    nickname: adrian
    password: test1

FriendsWith:
  friendship1:
    friend1_id: user1
    friend2_id: user2

我遇到了这个完整性约束问题:

  SQLSTATE[23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails (`krowdd`.`friends_with`, CONSTRAINT `friends_with_ibfk_1` FOREIGN KEY (`friend1_id`) REFERENCES `user` (`id`) ON DELETE CASCADE)  

有什么想法吗？

添加:

我注意到生成的 SQL 代码仅显示 Friends_with 表的一个约束:

ALTER TABLE friends_with ADD CONSTRAINT friends_with_friend2_id_user_id FOREIGN KEY (friend2_id) REFERENCES user(id) ON DELETE CASCADE;

也许这会有所帮助!

谢谢!

Answer 1

以不同的方式命名 FriendsWith 表中的关系，以便 Doctrine 可以正确使用它们:

relations:
  User1:   { onDelete: CASCADE, local: friend1_id, foreign: id, foreignAlias: Friend1 }
  User2:   { onDelete: CASCADE, local: friend2_id, foreign: id, foreignAlias: Friend2 }

这些数字可能不是关系的最佳名称，但你明白了。

更新 - 代码:

这应该可以为您完成工作 - 请注意，我在 User 表中添加关系，而不是 FriendsWith 表中:

relations:
  Friend1:  {class: FriendsWith, local: id, foreign: friend1_id, type: many, foreignType: one, foreignAlias: User1, onDelete: CASCADE}
  Friend2:  {class: FriendsWith, local: id, foreign: friend2_id, type: many, foreignType: one, foreignAlias: User2, onDelete: CASCADE}