Question

我有以下两种模式：

module.exports = function(sequelize, DataTypes) {
  var ChatRoom = sequelize.define('ChatRoom', {
    status: DataTypes.STRING,
  }, {
    classMethods: {
      associate: function(models) {
        ChatRoom.hasMany(models.User)
        ChatRoom.hasMany(models.Message)
      }
    }
  });

  return ChatRoom;
};

module.exports = function(sequelize, DataTypes) {
  var User = sequelize.define("User", {
    friendly_id: DataTypes.STRING,
  }, {
    classMethods: {
      associate: function(models) {
        User.hasMany(models.Message)
      }
    }
  });

  return User;
};

当我提取用户时，我也希望获取关联的ChatRoom。我尝试了以下

models.User.findOne({
  where: {messenger_id: senderID},
  include: [{model: models.ChatRoom}]
}).then(function(user) { ... })

但是我收到了这个错误

ChatRoom is not associated to User!

Answer 1

定义ChatRoom模型时，您还应将此模型与associate模型相关联。

我不了解您的业务逻辑，但我认为User模型的associate: function(models) { User.hasMany(models.Message); User.belongsTo(models.ChatRoom, { onDelete: "CASCADE", foreignKey: { allowNull: false } }); }方法应如下所示：

{{1}}

Sequelize eager loading：hasMany包括parent

1 个答案: