Making relation one to many on sequelize node js - node.js

Question

I've been tried of making relation of one to many on sequelize, i just wanna make the "jadwal" data have data of "dosen".
This's the JadwalModel that have the foreignKey
// Main Folder > models > JadwalModel.js
import { Sequelize } from "sequelize";
import db from "../config/Database.js";
import Dosen from "./DosenModel.js";
const { DataTypes } = Sequelize;
const Jadwal = db.define('jadwal', {
id: { type: DataTypes.INTEGER, primaryKey: true, autoIncrement: true },
id_dosen: {
type: DataTypes.INTEGER
},
room: {
type: DataTypes.STRING
},
date: {
type: DataTypes.DATE
}
}, {
freezeTableName: true
});
// Dosen.hasMany(Jadwal, { foreignKey: 'id_dosen' });
// Jadwal.belongsTo(Dosen, { foreignKey: 'id_dosen' }); // This return ReferenceError: Cannot access 'Dosen' before initialization
export default Jadwal;
This's the Dosen model that the primaryKey/ ReferenceKey
// Main Folder > models > DosenModel.js
import { Sequelize } from "sequelize";
import db from '../config/Database.js';
import Jadwal from "./JadwalModel.js";
const { DataTypes } = Sequelize;
const Dosen = db.define('dosen', {
id_dosen: {
type: DataTypes.INTEGER,
primaryKey: true,
autoIncrement: true
},
id_matkul: {
type: DataTypes.INTEGER
},
id_user: {
type: DataTypes.INTEGER,
},
name: {
type: DataTypes.STRING
},
nip: {
type: DataTypes.INTEGER
},
username: {
type: DataTypes.STRING
},
password: {
type: DataTypes.STRING
},
refresh_token: {
type: DataTypes.TEXT
}
}, {
freezeTableName: true
});
// Dosen.hasMany(Jadwal, { foreignKey: 'id_dosen' });
// Jadwal.belongsTo(Dosen, { foreignKey: 'id_dosen' });
export default Dosen;
This's the jadwal controller the file to get the data
// Main Folder > controllers > Jadwal.js
import Dosen from '../models/DosenModel.js';
import Jadwal from '../models/JadwalModel.js';
export const getJadwals = async(req, res) => {
try {
const jadwal = await Jadwal.findAll({
attributes: ['id', 'id_dosen', 'room', 'date']
}, {
include: [{ model: Dosen }]
});
res.status(200).json(jadwal);
} catch (error) {
console.log(error);
}
}
And this's the example result
// Result
[
{
"id": 1,
"id_dosen": 1,
"room": "Ruang TR 2",
"date": "2022-05-26T10:00:00.000Z"
}
]
// The result that i want is
[
{
"id": 1,
"dosen": {
"name" : "dosenName"
},
"room": "Ruang TR 2",
"date": "2022-05-26T10:00:00.000Z"
}
]

Answer 1

That wasn't error, i just forgot because i only fetch several field not all so i decide to delete the attributes and get the data relation
attributes: ['id', 'id_dosen', 'ruangan', 'tanggal']