example.js

'use strict';
import Sequelize from 'sequelize';
import bcrypt from 'bcryptjs';
export default class User extends Sequelize.Model {
    static init(sequelize) {
        return super.init({
            username: {
                type: Sequelize.STRING,
                unique: true,
                allowNull: false
            },
            password: {
                type: Sequelize.STRING,
                allowNull: false,
                validate: {
                    notEmpty: { msg: 'Password can\'t be empty' }
                },
                set(value) {
                    this.setDataValue('password', bcrypt.hashSync(value, 10));
                }
            },
            userCategoryId: {
                type: Sequelize.INTEGER,
                references: {
                    model: sequelize.models.UserCategory,
                    key: 'id'
                }
            },
            email: {
                type: Sequelize.STRING,
                unique: true,
                allowNull: false,
                validate: {
                    isEmail: { msg: 'Please provide valid e-mail address' }
                }
            }
        }, {
            sequelize: sequelize,
            tableName: 'users',
            timestamps: true,
            paranoid: true
        });
    }
    static associate(models) {
        this.belongsTo(models.UserCategory, { foreignKey: 'userCategoryId' });
    }
}

models.js

const Sequelize = require('sequlize')


class User extends Sequlize.Model {
  static init(sequelize) {
    return super.init({
      id: {
        type: Sequelize.INTEGER,
        primaryKey: true,
        autoIncrement: true,
      },
    }, {
      sequelize,
      tableName: 'users',
      schema: 'app'
    }) 
  }
}


module.exports = {
  User, 
}