const { Model } = require('sequelize'); module.exports = (sequelize, DataTypes) => { class Tag extends Model { /** * Helper method for defining associations. * This method is not a part of Sequelize lifecycle. * The `models/index` file will call this method automatically. */ static associate(models) { /* define association here */ } } Tag.init({ tag_name: { type: DataTypes.STRING, allowNull: false, primaryKey: true } }, { sequelize, timestamps: false, modelName: 'Tag', tableName: 'tag', createdAt: true, updatedAt: true }); Tag.prototype.toJSONFor = function () { return { id: this.tag_id, name: this.tag_name }; }; return Tag; };