Nodejs Sequelize Many to many relationship - node.js

Question

I am trying to fetch data from DB with sequelize. The many to many relationships between users and roles. When i fetch the users does not include the roles.
The code look like:
user model
// model defines the user objects
const userModel = (sequelize, Sequelize) => {
const users = sequelize.define("user", {
id: {
type: Sequelize.STRING,
allowNull: false,
primaryKey: true,
},
firstname: {
allowNull: false,
type: Sequelize.STRING,
},
lastname: {
allowNull: false,
type: Sequelize.STRING,
},
password: {
allowNull: false,
type: Sequelize.STRING,
},
email: {
allowNull: false,
type: Sequelize.STRING,
},
image: {
allowNull: true,
type: Sequelize.STRING,
},
});
//don not show password and id
users.prototype.toJSON = function () {
let values = Object.assign({}, this.get());
delete values.password;
delete values.id;
return values;
};
return users;
};
export default userModel;
Roles model
// model defines the events objects
const rolesModel = (sequelize, Sequelize) => {
const roles = sequelize.define("roles", {
id: {
type: Sequelize.STRING,
allowNull: false,
primaryKey: true,
},
name: {
allowNull: false,
type: Sequelize.STRING,
},
description: {
allowNull: true,
type: Sequelize.STRING,
},
});
return roles;
};
export default rolesModel;
The associations:
db.users.associate = (db) => {
db.users.belongsToMany(db.roles, {
through: "userroles",
constraints: false,
foreignKey: "rolesId",
});
};
db.roles.associate = (db) => {
db.roles.belongsToMany(db.users, {
through: "userroles",
constraints: false,
foreignKey: "userId",
});
};
There are two controller functions that are adding and fetching the user data
Controller
User.create(userDetails)
.then(() => {
let roles = req.body.roles;
roles.forEach(async (element) => {
let role = await Roles.findByPk(element);
if (role) {
await Userroles.create({
id: uniqid(),
rolesId: element,
userId: userId,
});
} else {
logger.warn(`tried adding to ${userId} a none existent role`);
}
});
})
// get user
let user = await User.findOne({
where: { email: username },
include: { model: db.roles },
});
So the roles are only a empty array when I try getting user details:
"firstname": "Mathew",
"lastname": "Murimi",
"email": "******#gmail.com",
"image": null,
"createdAt": "2022-02-12T22:56:40.000Z",
"updatedAt": "2022-02-12T22:56:40.000Z",
"roles": []

Answer 1

Receive the user created in the then, add the id of "newUser" in "userId"
User.create(userDetails)
.then((**newUser**) => {
let roles = req.body.roles;
roles.forEach(async (element) => {
let role = await Roles.findByPk(element);
if (role) {
await Userroles.create({
id: uniqid(),
rolesId: element,
userId: **newUser.id**,
});
} else {
logger.warn(`tried adding to ${**newUser.id**} a none existent role`);
}
});
})