Nodejs with Sequelizejs using separate files per model

Question

Nodejs with Sequelizejs using separate files per model

This is an embarrassingly beginner question, but I just want to settle my worries about Sequelizejs. I want to split out each model into its own file to keep my source organized. In order to do that I need to require("sequelize') and var sequelize = new Sequelize('DB-Name', 'DB-User', 'DB-Password'); at the start of each file.

My question is, will that create a new connection to the database per model, or will it just keep re-using the same connection? Should I abandon the whole concept of "one model per file" and just create a master Models.js file?

I am very new to Node and am still getting used to its conventions. Thanks for the help!

node.js
sequelize.js

Answer 1

Every model is defined as its own module, which you export:

module.exports = function(sequelize, DataTypes){
    return sequelize.define('Brand', {
        name: {
            type: DataTypes.STRING,
            unique: true,
            allowNull: false },
        description: {
            type: DataTypes.TEXT,
            allowNull: false },
        status: {
            type: DataTypes.INTEGER,
            unique: false,
            allowNull: true }
    })
};

Then simply import the module when you initialize Sequelize (and you can import many models here):

var Sequelize = require("sequelize");
var config = require("../../config/config.js");
var sequelize = new Sequelize(config.database, config.username, config.password,
    { dialect: config.dialect, host: config.host, port: config.port,
      omitNull: true, logging: false });
var Brand = require("./Brand").Brand;

You can read up more on modules at http://nodejs.org/api/modules.htm but the example above should get you started.