sequelize 仅包含 returns 个结果

Question

我有一个 Users table 和一个 Groups table，当我检索单个用户时，我想获得该用户的所有组的列表属于。我创建了一个名为 GroupUsers 的连接 table，它上面有 userId 和 groupId，这就是我知道用户属于某个组的方式。现在，当我尝试在 find 上使用 sequelize include 获取用户所属的组列表时，如果用户属于不同的组，它只会 returns 第一个匹配项。我该如何解决？

Users controller

return models.Users
.find({
  include: [{
    model: models.Groups,
    as: 'groups',
    limit: null,
    required: false
  }],
  where: { username }
})

Returns this:

{
    "id": 1,
    "username": "John",
    "phone": "xxxxxxxx",
    "email": "john@email.com",
    "createdAt": "2017-07-16T20:14:04.744Z",
    "updatedAt": "2017-07-16T20:14:04.744Z",
    "groups": [
        {
            "id": 1,
            "name": "Test Group",
            "type": "Public",
            "createdAt": "2017-07-16T20:13:18.392Z",
            "updatedAt": "2017-07-16T20:13:18.392Z",
            "GroupUsers": {
                "userId": 1,
                "groupId": 1,
                "last_seen": null,
                "createdAt": "2017-07-16T20:14:27.903Z",
                "updatedAt": "2017-07-16T20:14:27.903Z"
            }
        }
    ]
}

Instead of this:

    {
        "id": 1,
        "username": "John",
        "phone": "xxxxxxxx",
        "email": "john@email.com",
        "createdAt": "2017-07-16T20:14:04.744Z",
        "updatedAt": "2017-07-16T20:14:04.744Z",
        "groups": [
            {
                "id": 1,
                "name": "Test Group",
                "type": "Public",
                "createdAt": "2017-07-16T20:13:18.392Z",
                "updatedAt": "2017-07-16T20:13:18.392Z",
                "GroupUsers": {
                    "userId": 1,
                    "groupId": 1,
                    "last_seen": null,
                    "createdAt": "2017-07-16T20:14:27.903Z",
                    "updatedAt": "2017-07-16T20:14:27.903Z"
                }
            },
            {
                "id": 2,
                "name": "Test Group 2",
                "type": "Public",
                "createdAt": "2017-07-16T20:13:18.392Z",
                "updatedAt": "2017-07-16T20:13:18.392Z",
                "GroupUsers": {
                    "userId": 1,
                    "groupId": 2,
                    "last_seen": null,
                    "createdAt": "2017-07-16T20:14:27.903Z",
                    "updatedAt": "2017-07-16T20:14:27.903Z"
                }
            }
        ]
    }

我确定我在某个地方做错了我只是不知道在哪里，同样的事情也可能是 sequelize 的原因，包括结果中的连接 table：GroupUsers

Answer 1

看来在我的联想中，我做了：

Users.belongsToMany(models.Groups, {
  through: 'GroupUsers',
  as: 'groups',
  foreignKey: 'groupId'
});

而不是：

Users.belongsToMany(models.Groups, {
  through: 'GroupUsers',
  as: 'groups',
  foreignKey: 'userId'
});

注意 foreignKey 属性

至于同样返回的 GroupUsers 对象，我删除了它：

include: [{
    model: models.Groups,
    as: 'groups',
    attributes: ['id', 'name'],
    through: { attributes: [] }
  }]

注意 through 键 attributes 设置为空数组。

sequelize 仅包含 returns 个结果

sequelize include returns only one result

join

sequelize.js

postgresql-9.4