Question

我正在尝试按关联模型的数量进行排序，并且一直从Sequelize获得以下错误

无法读取未定义的属性'_modelAttribute'

我有以下代码：

db.user.belongsToMany(db.user, {
  as: "User",
  through: "UserFollowers",
  foreignKey: "user_id"
});
db.user.belongsToMany(db.user, {
  as: "Follower",
  through: "UserFollowers",
  foreignKey: "follower_id"
});

和

   User.findAll({
          attributes:["username",db.sequelize.literal('(SELECT COUNT(*) FROM "public"."Users","public"."UserFollowers" WHERE "Users".user_id = "UserFollowers".user_id GROUP BY "Users".user_id)'),'followercount'],
          include:[{model:User,as:'Follower'}],
          order:[{ model: User, as: 'Follower' }[db.sequelize.literal('followercount')],'DESC']
      }).then(users => {
          res.json(users)
      })

感谢您的帮助！

Answer 1

通过浏览代码，问题似乎出在ordering子句上。更改为：

order: [[{ model: User, as: 'Follower' }, 'followercount', 'DESC']]

如果这样不能解决问题，请尝试通过添加logging: console.log记录查询结果。这应该可以帮助您通过分析sql查询来确定哪些部分失败了。

Sequelize：TypeError：无法读取未定义的属性“ _modelAttribute”

1 个答案: