module.exports = (sequelize, DataTypes) => { let Category = sequelize.define('Category', { name: { type: DataTypes.STRING, unique: true, set (val) { let underscored = val.trim().replace(/\s/g, '_').toUpperCase() this.setDataValue('name', val) this.setDataValue('value', underscored) } }, value: { type: DataTypes.STRING, unique: true } }) return Category }