我正在使用sequelize访问postgres数据库,并且我想查询一个城市,例如包括“ Building”表,但我想将输出重命名为“ buildings”并返回http响应,但是我有这个错误:
{SequelizeEagerLoadingError:建筑使用别名与城市相关联。你 e包含一个别名(建筑物),但与您的a中定义的别名不匹配 联系。
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;
};
答案 0 :(得分:2)
由于您在以下代码中定义的别名为building
:
City.hasMany(models.building,{as: 'building', foreignKey: 'cityId'})
但是在查询中,您正在使用buildings
include: [
{
model: Building, as: "buildings" // <---- HERE
}
]
应为building
:
include: [
{
model: Building, as: "building" // <---- HERE
}
]