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Ruby on Rails
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Rafael França f9ba12bd53
Merge pull request #34446 from alphaappsinc/master
Allow patching polling interval logarithmic multiplier
2018-11-14 16:50:57 -05:00
.github Changed wording for no-response documentation 2018-10-20 00:49:49 -04:00
actioncable Allow patching polling interval logarithmic multiplier 2018-11-14 11:30:47 +02:00
actionmailer Amend CVE note and security guide section wordings 2018-11-06 18:06:57 -05:00
actionpack Allow rescue from parameter parse errors 2018-11-13 18:05:05 -05:00
actionview Fix broken CHANGELOG markup [ci skip] 2018-11-08 09:28:42 +09:00
activejob Make PERMITTED_TYPES private 2018-11-12 20:44:59 +01:00
activemodel Merge pull request #34417 from r3trofitted/fix/added_options_check 2018-11-13 11:11:21 -05:00
activerecord Merge pull request #34437 from kbrock/union_all_paren 2018-11-13 17:37:05 -05:00
activestorage Amend CVE note and security guide section wordings 2018-11-06 18:06:57 -05:00
activesupport Amend CVE note and security guide section wordings 2018-11-06 18:06:57 -05:00
ci Use the same option for create database statements between Raketask and travis.rb 2018-09-26 03:18:56 +00:00
guides fix typo on association_basics.md [ci skip] 2018-11-14 00:10:02 -08:00
railties Merge pull request #34400 from gmcgibbon/rm_autoload_app_javascripts 2018-11-13 17:53:55 -05:00
tasks Fix rubocop offenses 2018-08-15 08:34:31 +03:00
tools Use frozen string literal in tools/ 2017-08-13 22:04:59 +09:00
.codeclimate.yml Use RuboCop 0.60.0 and remove exclude files for Style/RedundantFreeze 2018-11-08 13:06:12 +00:00
.gitattributes adds .gitattributes to enable Ruby-awareness 2016-03-16 11:15:22 +01:00
.gitignore Add /yarn-error.log to .gitignore 2018-10-21 22:44:11 +03:00
.rubocop.yml Use RuboCop 0.60.0 and remove exclude files for Style/RedundantFreeze 2018-11-08 13:06:12 +00:00
.travis.yml Replace port number 5433 to 5432 which tests expect 2018-10-19 12:38:15 +09:00
.yardopts
.yarnrc Make Webpacker the default JavaScript compiler for Rails 6 (#33079) 2018-09-30 22:31:21 -07:00
Brewfile [ci skip] Add ImageMagick to Brewfile 2018-08-21 23:01:12 -05:00
CODE_OF_CONDUCT.md Update CoC to change a history of updates URL [ci skip] 2018-04-19 23:33:53 +09:00
CONTRIBUTING.md Remove html tag making markdown misrender [ci skip] 2017-06-05 22:11:57 -05:00
Gemfile Upgrade thor to 0.20.1 2018-11-09 17:20:45 -05:00
Gemfile.lock Make sure we are using a working version of thor locally 2018-11-09 22:00:58 -05:00
MIT-LICENSE Bump license years for 2018 2017-12-31 22:36:55 +09:00
package.json Make Webpacker the default JavaScript compiler for Rails 6 (#33079) 2018-09-30 22:31:21 -07:00
rails.gemspec Rails 6 requires Ruby 2.4.1+ 2018-02-17 15:34:57 -08:00
RAILS_VERSION Start Rails 6.0 development!!! 2018-01-30 18:51:17 -05:00
Rakefile Use frozen string literal in root files 2017-08-13 22:14:24 +09:00
README.md All links from README.md now served over https 2018-07-31 00:31:43 -05:00
RELEASING_RAILS.md Use https with weblog URI 2018-05-02 21:06:03 +09:00
version.rb Start Rails 6.0 development!!! 2018-01-30 18:51:17 -05:00

Welcome to Rails

What's 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: Model, View, and Controller, each with a specific responsibility.

Model layer

The Model layer represents the domain model (such as Account, Product, Person, Post, etc.) and encapsulates the business logic 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 Active Model module.

Controller layer

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 load and manipulate models, and render view templates in order to generate the appropriate HTTP response. In Rails, incoming requests are routed by Action Dispatch to an appropriate controller, and controller classes are derived from ActionController::Base. Action Dispatch and Action Controller are bundled together in Action Pack.

View layer

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). Views are typically rendered to generate a controller response, or to generate the body of an email. In Rails, View generation is handled by Action View.

Frameworks and libraries

Active Record, Active Model, Action Pack, and Action View can each be used independently outside Rails. In addition to that, Rails also comes with Action Mailer, a library to generate and send emails; Active Job, a framework for declaring jobs and making them run on a variety of queueing backends; Action Cable, a framework to integrate WebSockets with a Rails application; Active Storage, a library to attach cloud and local files to Rails applications; and Active Support, a collection of utility classes and standard library extensions that are useful for Rails, and may also be used independently outside Rails.

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 or -h for options.

  4. Go to http://localhost:3000 and you'll see: "Yay! Youre on Rails!"

  5. Follow the guidelines to start developing your application. You may find the following resources handy:

Contributing

Code Triage Badge

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

Trying to report a possible security vulnerability in Rails? Please check out our security policy for guidelines about how to proceed.

Everyone interacting in Rails and its sub-projects' codebases, issue trackers, chat rooms, and mailing lists is expected to follow the Rails code of conduct.

Code Status

Build Status

License

Ruby on Rails is released under the MIT License.