A lightweight ORM for PostgreSQL, MySQL, and SQLite3


Bookshelf is a Node.js ORM with support for PostgreSQL, MySQL / MariaDB, and SQLite3.

It is built atop the Knex query builder, and is strongly influenced by the Model and Collection foundations of Backbone.js.

It features transaction support, one-to-one, one-to-many, many-to-many, and polymorphic relations.

For documentation, FAQs, and other information, see:

To suggest a feature, report a bug, or for general discussion:

We have several examples on the website. Here is the first one to get you started:

var knex = require('knex')({client: 'mysql', connection: process.env.MYSQL_DATABASE_CONNECTION });
var bookshelf = require('bookshelf')(knex);
var User = bookshelf.Model.extend({
  tableName: 'users',
  messagesfunction() {
    return this.hasMany(Posts);
var Posts = bookshelf.Model.extend({
  tableName: 'messages',
  tagsfunction() {
    return this.belongsToMany(Tag);
var Tag = bookshelf.Model.extend({
  tableName: 'tags'
User.where('id', 1).fetch({withRelated: ['posts.tags']}).then(function(user) {
}).catch(function(err) {

To contribute to Bookshelf, read the contribution documentation for more information.