sequelize select 并包含另一个 table 别名
sequelize select and include another table alias
我正在使用 sequelize 访问 postgres 数据库,我想查询一个城市,例如包含 "Building" table,但我想将输出重命名为 "buildings" 和 return http 响应,但我有这个错误:
{ SequelizeEagerLoadingError: building is associated to city using an alias. You'v
e included an alias (buildings), but it does not match the alias defined in your a
ssociation.
City.findById(req.params.id,{
include: [
{
model: Building, as: "buildings"
}
]
}).then(city =>{
console.log(city.id);
res.status(201).send(city);
}) .catch(error => {
console.log(error);
res.status(400).send(error)
});
城市模型
const models = require('../models2');
module.exports = (sequelize, DataTypes) => {
const City = sequelize.define('city', {
name: { type: DataTypes.STRING, allowNull: false },
status: { type: DataTypes.INTEGER, allowNull: false },
latitude: { type: DataTypes.BIGINT, allowNull: false },
longitude: { type: DataTypes.BIGINT, allowNull: false },
}, { freezeTableName: true});
City.associate = function(models) {
// associations can be defined here
City.hasMany(models.building,{as: 'building', foreignKey: 'cityId'})
};
return City;
};
您在下面的代码中定义的别名是 building
:
City.hasMany(models.building,{as: 'building', foreignKey: 'cityId'})
但在查询中,您使用的是 buildings
include: [
{
model: Building, as: "buildings" // <---- HERE
}
]
应该是building
:
include: [
{
model: Building, as: "building" // <---- HERE
}
]
我正在使用 sequelize 访问 postgres 数据库,我想查询一个城市,例如包含 "Building" table,但我想将输出重命名为 "buildings" 和 return http 响应,但我有这个错误:
{ SequelizeEagerLoadingError: building is associated to city using an alias. You'v e included an alias (buildings), but it does not match the alias defined in your a ssociation.
City.findById(req.params.id,{
include: [
{
model: Building, as: "buildings"
}
]
}).then(city =>{
console.log(city.id);
res.status(201).send(city);
}) .catch(error => {
console.log(error);
res.status(400).send(error)
});
城市模型
const models = require('../models2');
module.exports = (sequelize, DataTypes) => {
const City = sequelize.define('city', {
name: { type: DataTypes.STRING, allowNull: false },
status: { type: DataTypes.INTEGER, allowNull: false },
latitude: { type: DataTypes.BIGINT, allowNull: false },
longitude: { type: DataTypes.BIGINT, allowNull: false },
}, { freezeTableName: true});
City.associate = function(models) {
// associations can be defined here
City.hasMany(models.building,{as: 'building', foreignKey: 'cityId'})
};
return City;
};
您在下面的代码中定义的别名是 building
:
City.hasMany(models.building,{as: 'building', foreignKey: 'cityId'})
但在查询中,您使用的是 buildings
include: [
{
model: Building, as: "buildings" // <---- HERE
}
]
应该是building
:
include: [
{
model: Building, as: "building" // <---- HERE
}
]