Why sequelize.sync() always return empty models? - node.js

Question

I have 2 express.js applications and run sequelize.sync(), but in my first app it generate the tables, and the others not generate the tables, i wonder why, because the script is identic.
database.js
const Sequelize = require('sequelize');
const sequelize = new Sequelize('student-affairs', 'root', '', {
dialect: 'mysql',
host: 'localhost',
operatorsAliases: false,
});
module.exports = sequelize;
organization.js
const Sequelize = require('sequelize');
const sequelize = require('../configs/database');
const Organization = sequelize.define('organization', {
id: {
type: Sequelize.INTEGER,
allowNull: false,
primaryKey: true,
autoIncrement: true
},
name: {
type: Sequelize.STRING,
allowNull: false
},
logo: {
type: Sequelize.STRING
},
createdBy: {
type: Sequelize.INTEGER,
allowNull: false
},
updatedBy: {
type: Sequelize.INTEGER,
allowNull: false
}
});
module.exports = Organization;
app.js
// Database
const sequelize = require('./configs/database');
sequelize
.sync()
.then(result => {
console.log(result);
app.listen(3001);
})
.catch(err => {
console.log(err);
});
But after i log it, it always return the models empty like this
models: {},
modelManager: ModelManager { models: [], sequelize: [Circular] },
it doesn't have the models. anyone can explain why? thanks

Answer 1

I just realize that i am not call the organization model in app.js, once i define it in app.js and it fix the problem.
I think it's a basic mistake. Now i understand how it works.
// Models
const Organization = require('./models/organization');
sequelize
.sync()
.then(result => {
app.listen(3000);
})
.catch(err => {
console.log(err);
});