Question

我有一个自定义用户，角色和角色映射，分别名为AdminUser，AdminRole和AdminRoleMapping。我已经用数据填充数据库，并且正在使用Mysql和Loopback 3.19。我的模型配置是：

{
  "name": "AdminRole",
  "plural": "adminRoles",
   ...
  "base": "Role",
  "relations": {
    "users": {
      "type": "hasMany",
      "model": "AdminUser",
      "foreignKey": "principalId",
      "through": "AdminRoleMapping"
    }
  },
...
}

{
  "name": "AdminUser",
  "plural": "adminUsers",
  "base": "User",
   ...
    "roles": {
      "type": "hasMany",
      "model": "AdminRole",
      "foreignKey": "principalId",
      "through": "AdminRoleMapping"
    }
  },
  ...
}

{
  "name": "AdminRoleMapping",
  "description": "Map principals to roles",
  "plural": "adminRoleMappings",
  "base": "RoleMapping",
  ....
  "relations": {
    "principal": {
      "type": "belongsTo",
      "model": "AdminUser",
      "foreignKey": "principalId"
    },
    "roles": {
      "type": "belongsTo",
      "model": "AdminRole",
      "foreignKey": "roleId"
    }
  },
  ....
}

当我尝试访问GET /adminUsers/{id}/roles时，我收到状态错误500

"message": "Relation \"adminRole\" is not defined for AdminRoleMapping model"

我的设置有什么问题？我已经关注了文档。

Answer 1

经过反复试验后，在中间表中重命名关系名称，解决了该问题：

{
  "name": "AdminRoleMapping",
  "description": "Map principals to roles",
  "plural": "adminRoleMappings",
  "base": "RoleMapping",
  ...
  "relations": {
    "adminUser": {
      "type": "belongsTo",
      "model": "AdminUser",
      "foreignKey": "principalId"
    },
    "adminRole": {
      "type": "belongsTo",
      "model": "AdminRole",
      "foreignKey": "roleId"
    }
  },
  ...
}

回送3.x-通过RoleMapping的用户角色M：M关系

1 个答案: