javascript - 无法从 sequelize 中的 select 语句中排除关联的字段

Question

我有以下代码(简化):

var group = sequelize.define("group", {
    id: {type: DataTypes.INTEGER, autoIncrement: false, primaryKey: true},
    name: type: DataTypes.STRING,
    parentId: DataTypes.INTEGER
}, { classMethods: {
        associate: function (models) {
            group.belongsToMany(models.item, { as:'items', foreignKey: 'group_id', through: models.group_item_tie });
        }}
});

var group_item_tie = sequelize.define("group_item_tie", {}, {freezeTableName: true});

var item = sequelize.define("item", {
    spn: { type: DataTypes.INTEGER, autoIncrement: false, primaryKey: true },
}, { classMethods: {
        associate: function (models) {
            item.belongsToMany(models.group, { foreignKey: 'spn', through: models.group_item_tie });
        }}
});

当我尝试返回一些具有关系的记录时，可以这样说:

dbcontext.group.findAll({
    where: { id: 6 },
    include: [{
                model: dbcontext.item,
                as: 'items',
                attributes: ['spn']
            }]
    })

我还从关系表 group_item_tie 中获得结果:

[{
    "id": 6,
    "name": "abc",
    "parentId": 5,
    "createdAt": "2015-05-06T15:54:58.000Z",
    "updatedAt": "2015-05-06T15:54:58.000Z",
    "items": [
        {   "spn": 1,
            "group_item_tie": {
                "createdAt": "2015-05-06 15:54:58.000 +00:00",
                "updatedAt": "2015-05-06 15:54:58.000 +00:00",
                "group_id": 6,
                "spn": 1
            }
        },
        {   "spn": 2,
            "group_item_tie": {
                "createdAt": "2015-05-06 15:54:58.000 +00:00",
                "updatedAt": "2015-05-06 15:54:58.000 +00:00",
                "group_id": 6,
                "spn": 2
            }
        },

我在生成的 sql 查询中看到它。如何从选择语句中排除那些？我尝试了其他一些方法，但没有成功。

我希望有一些更清洁的东西然后只是做:

delete item.group_item_tie;

Answer 1

我将回答自己，因为它可能对将来的某人有用。所以根据#3664 , #2974和 #2975答案如下(感谢mickhansen):

include: [{
  model: dbcontext.item,
  as: 'items',
  attributes: ['spn'],
  through: {
    attributes: []
  }        
}]

很快就会记录下来。