如何在Sequelize中按多对多关系排序？

Question

我通过UserCategory在用户和类别之间建立了多对多关系，如下所示。

let user = await User.findAll({
  where: {
    id: req.query.user
  },
  attributes: ["id", "name"],
  include: [
    {
      model: models.Category,
      as: "interests",
      attributes: ["id", "name", "nameTH", "icon"],
      through: {
        model: models.UserCategory,
        as: "user_categories",
        attributes: ["id", "userId", "categoryId", "updatedAt"]
      }
    }
  ],
  // Here, I want to order by updatedAt in user_categories
  order: [["user_categories", "updatedAt", "DESC"]] 
});

如何在UserCategory模型中通过“updatedAt”对结果进行排序？

Answer 1

updatedAt请参考以下代码按内部UserCategory模型对结果进行排序-

let user = await User.findAll({
  where: {
    id: req.query.user
  },
  attributes: ["id", "name"],
  include: [
    {
      model: models.Category,
      as: "interests",
      attributes: ["id", "name", "nameTH", "icon"],
      through: {
        model: models.UserCategory,
        as: "user_categories",
        attributes: ["id", "userId", "categoryId", "updatedAt"]
      }
    }
  ],
  // Here, I want to order by updatedAt in user_categories
  order: [[Sequelize.literal('`interests->user_categories`.`updatedAt`'), 'DESC']] 
});

我希望它有帮助！