加入后续集设置别名属性名称

Question

在三个模型之间的连接操作后，我收到了一个有效的结果，但我会重命名 findAll 的连接操作生成的属性

询问：

const orchards = await db.Area.findAll({
        include: [db.AreaCoordinate, db.Crop],
        attributes: ['id', 'name']
      });

区域坐标模型：

module.exports = function (sequelize, DataTypes) {

  var AreaCoordinate = sequelize.define('AreaCoordinate', {
    latitude: {
      type: DataTypes.STRING(45),
      allowNull: true
    },
    longitude: {
      type: DataTypes.STRING(45),
      allowNull: true
    }
  }, {
    classMethods: {
      associate: function (models) {
        AreaCoordinate.belongsTo(models.Area, {foreignKey: 'areaId'});
      }
    }
  });

  return AreaCoordinate;
};

作物模型：

module.exports = function (sequelize, DataTypes) {

  var Crop = sequelize.define('Crop', {
    name: {
      type: DataTypes.STRING(45),
      allowNull: true
    },
    lang: {
      type: DataTypes.STRING(45),
      allowNull: true
    }
  }, {
    classMethods: {
      associate: function (models) {
        Crop.hasMany(models.Area, {foreignKey:'cropId'})
      }
    }
  });

  return Crop;
};

区域模型：

module.exports = function (sequelize, DataTypes) {

  var Area = sequelize.define('Area', {
    name: DataTypes.STRING
  }, {
    classMethods: {
      associate: function (models) {
        // example on how to add relations
        Area.belongsTo(models.Crop, {foreignKey: 'cropId'});
        Area.belongsTo(models.Orchard, {as: 'orchard'});
        Area.hasMany(models.AreaCoordinate, {foreignKey:'areaId'})
      }
    }
  });

  return Area;
};

我会从查询中收到这样的 JSON：

{
    "status": 200,
    "status_message": "OK",
    "data": {
        "orchard": [
            {
                "name": "pantano",
                "coordinates": [
                    {
                        "id": 115,
                        "latitude": "1",
                        "longitude": "2",
                        "createdAt": "2017-08-29T12:03:11.000Z",
                        "updatedAt": "2017-08-29T12:03:11.000Z",
                        "areaId": 28
                    },
                    {
                        "id": 116,
                        "latitude": "1",
                        "longitude": "2",
                        "createdAt": "2017-08-29T12:03:11.000Z",
                        "updatedAt": "2017-08-29T12:03:11.000Z",
                        "areaId": 28
                    }
                ],
                "cropId": 10
            }
        ]
    }
}

但我收到的是（看 AreaCoordinates 和 Crop）：

{
    "status": 200,
    "status_message": "OK",
    "data": {
        "orchard": [
            {
                "name": "pantano",
                "AreaCoordinates": [
                    {
                        "id": 115,
                        "latitude": "1",
                        "longitude": "2",
                        "createdAt": "2017-08-29T12:03:11.000Z",
                        "updatedAt": "2017-08-29T12:03:11.000Z",
                        "areaId": 28
                    },
                    {
                        "id": 116,
                        "latitude": "1",
                        "longitude": "2",
                        "createdAt": "2017-08-29T12:03:11.000Z",
                        "updatedAt": "2017-08-29T12:03:11.000Z",
                        "areaId": 28
                    }
                ],
                "Crop": 10
            }
        ]
    }
}

我试图为AreaCoordinates和Crop设置一些别名，但找不到解决方案。预先感谢您对我们的支持。

Answer 1

像这样编写查询：

const result = await Table.findAll({
  attributes: ['id', ['foo', 'bar']] //id, foo AS bar
});