Sails.js
An MVC framework for Node.js modeled after Ruby on Rails
js MVC web framework that emphasizes convention over configuration, auto-generating RESTful (and WebSocket-based) APIs from data models through its built-in ORM, Waterline, in a style modeled after Ruby on Rails.
Definition
Sails.js is a Node.js MVC web framework that emphasizes convention over configuration, auto-generating RESTful (and WebSocket-based) APIs from data models through its built-in ORM, Waterline, in a style modeled after Ruby on Rails.
Overview
Sails.js was released in 2012 to bring a Rails-like development experience to the Node.js ecosystem: a structured model-view-controller (MVC) architecture with strong conventions that let developers get a working, database-backed API running with very little boilerplate. A defining feature is 'blueprints' — automatically generated REST (and Socket.io-based real-time) endpoints for any model's CRUD operations, generated purely from the model definition, without hand-writing controller logic for standard operations. Sails ships with its own ORM, Waterline, which provides a database-agnostic query interface that works across adapters for MySQL, PostgreSQL, MongoDB, and others, letting the same model code run against different databases with minimal changes. This is analogous to Rails' ActiveRecord but designed from the outset to abstract over both relational and non-relational stores. Beyond REST, Sails has first-class support for real-time features: it integrates Socket.io so that the same routes and controllers used for HTTP requests can also handle WebSocket connections, and it can automatically broadcast model changes to connected clients through 'PubSub' methods. This made it historically popular for real-time dashboards and chat-style applications built on Node.js before dedicated real-time frameworks became more common. While Sails' growth has slowed relative to newer frameworks, it remains used in production for applications that benefit from its rapid, convention-driven scaffolding of both REST and real-time APIs from a single model definition.
Key Features
- Convention-over-configuration MVC architecture inspired by Ruby on Rails
- Automatically generated REST 'blueprint' routes from model definitions
- Built-in Waterline ORM providing a database-agnostic query interface
- First-class Socket.io integration for real-time APIs alongside REST
- Automatic PubSub-style broadcasting of model changes to WebSocket clients
- Policy-based middleware system for route-level authorization
- CLI-driven code generation for models, controllers, and API endpoints