Skip to content
Ruby on Rails + GitHub patches
Ruby CSS
Find file
Pull request Compare This branch is 1798 commits ahead, 29609 commits behind rails:master.
Latest commit 4fc14b1 @charliesome charliesome 3.2.19.github9
Failed to load latest commit information.
actionmailer Remove Proc#bind from Rails 3.2
actionpack whoops, we don't want to create an output_buffer local
activemodel Merge remote-tracking branch 'upstream/3-2-stable' into 3-2-github
activerecord Move commit exception handling to a method so we can override
activeresource Preparing for 3.2.19 release
activesupport Force a period when local times are ambiguous
ci fixed a typo in a message when there is no failuresin a build
railties move serialization option from cookie option to global env option
script ci on ruby 2.1.2
tasks rake release should push the tag
tools Support an extra profile printer arg
vendor/cache remove sprockets dependency
.gitignore check in Gemfile.lock because the lack of it is causing problems
.travis.yml Rails 3.2.x is now compatible with Ruby 2.0.0
.yardopts Let YARD document the railties gem
Gemfile Merge remote-tracking branch 'upstream/3-2-stable' into 3-2-github
Gemfile.lock remove sprockets dependency
RAILS_VERSION 3.2.19.github9
README.rdoc Add dependency status (a la build status) to the README
RELEASING_RAILS.rdoc updates the host and port of publish_docs, and changes the release in…
Rakefile Merge pull request #4278 from kennyj/fix_rdoc_generating_problem
install.rb Add install script for testing gems locally
load_paths.rb This fixes an issue when bundling to a local path (eg. /vendor/bundle).
rails.gemspec Add license to the gemspec
version.rb Preparing for 3.2.19 release


Welcome to Rails

Rails is a web-application framework that includes everything needed to create database-backed web applications according to the Model-View-Controller (MVC) pattern.

Understanding the MVC pattern is key to understanding Rails. MVC divides your application into three layers, each with a specific responsibility.

The View layer is composed of “templates” that are responsible for providing appropriate representations of your application's resources. Templates can come in a variety of formats, but most view templates are HTML with embedded Ruby code (.erb files).

The Model layer represents your domain model (such as Account, Product, Person, Post) and encapsulates the business logic that is specific to your application. In Rails, database-backed model classes are derived from ActiveRecord::Base. Active Record allows you to present the data from database rows as objects and embellish these data objects with business logic methods. Although most Rails models are backed by a database, models can also be ordinary Ruby classes, or Ruby classes that implement a set of interfaces as provided by the ActiveModel module. You can read more about Active Record in its README.

The Controller layer is responsible for handling incoming HTTP requests and providing a suitable response. Usually this means returning HTML, but Rails controllers can also generate XML, JSON, PDFs, mobile-specific views, and more. Controllers manipulate models and render view templates in order to generate the appropriate HTTP response.

In Rails, the Controller and View layers are handled together by Action Pack. These two layers are bundled in a single package due to their heavy interdependence. This is unlike the relationship between Active Record and Action Pack which are independent. Each of these packages can be used independently outside of Rails. You can read more about Action Pack in its README.

Getting Started

  1. Install Rails at the command prompt if you haven't yet:

    gem install rails
  2. At the command prompt, create a new Rails application:

    rails new myapp

    where “myapp” is the application name.

  3. Change directory to myapp and start the web server:

    cd myapp; rails server

    Run with --help for options.

  4. Go to localhost:3000 and you'll see:

    "Welcome aboard: You're riding Ruby on Rails!"
  5. Follow the guidelines to start developing your application. You may find the following resources handy:


We encourage you to contribute to Ruby on Rails! Please check out the Contributing to Rails guide for guidelines about how to proceed. Join us!

Build Status

Dependency Status


Ruby on Rails is released under the MIT license.

Something went wrong with that request. Please try again.