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Ryuta Kamizono 50e4fda0a5 Remove redundant returning object
`object.transform_values!` returns `object` itself.
2019-02-09 05:19:20 +09:00
.github Label Action Text PRs [ci skip] 2019-01-04 23:48:30 -05:00
actioncable Respect ENV variables when finding DBs etc for the test suite 2019-02-06 01:20:06 +10:30
actionmailbox Allow skipping incineration of processed emails 2019-02-06 19:28:49 -05:00
actionmailer Preparing for 6.0.0.beta1 release 2019-01-18 15:42:12 -05:00
actionpack Merge pull request #35036 from rails/av-base-subclass 2019-02-06 18:08:36 -08:00
actiontext Merge pull request #35071 from kamipo/text_without_limit 2019-01-29 17:02:04 +09:00
actionview Fix deprecation warnings and call super 2019-02-06 16:57:34 -08:00
activejob Respect ENV variables when finding DBs etc for the test suite 2019-02-06 01:20:06 +10:30
activemodel activemodel typo fixes. 2019-01-31 02:43:44 +05:30
activerecord Refactor to just use Association#target= in associate_records_to_owner 2019-02-09 01:04:59 +09:00
activestorage Allow configuring the Azure Storage service with extra client options 2019-02-04 09:08:55 -05:00
activesupport Remove redundant returning object 2019-02-09 05:19:20 +09:00
ci Respect ENV variables when finding DBs etc for the test suite 2019-02-06 01:20:06 +10:30
guides Remove finalizer and configuration 2019-02-06 16:57:04 -08:00
railties Rename database_operations config to *_context 2019-02-07 15:41:43 -08:00
tasks Enable Lint/ErbNewArguments cop to avoid the deprecated arguments warning 2019-02-01 14:20:11 +09:00
tools
.codeclimate.yml Bump RuboCop to 0.63.0 2019-01-19 18:52:09 +09:00
.gitattributes
.gitignore Fix adding a rich_text_area to a form with no model 2018-12-31 12:16:21 -05:00
.rubocop.yml Enable Lint/ErbNewArguments cop to avoid the deprecated arguments warning 2019-02-01 14:20:11 +09:00
.travis.yml Use Ubuntu Xenial (16.04) at Travis CI 2019-01-26 02:08:57 +00:00
.yardopts
.yarnrc
Brewfile
CODE_OF_CONDUCT.md
CONTRIBUTING.md
Gemfile Relax sqlite3 version dependency 2019-02-04 15:21:40 -05:00
Gemfile.lock Update Gemfile.lock to reflect sqlite3 update 2019-02-05 08:44:57 +09:00
MIT-LICENSE Bump license years for 2019 2018-12-31 10:24:38 +07:00
package.json Move all npm packages to @rails scope 2019-01-10 11:01:57 -05:00
rails.gemspec Import Action Text 2019-01-04 22:22:49 -05:00
RAILS_VERSION Preparing for 6.0.0.beta1 release 2019-01-18 15:42:12 -05:00
Rakefile
README.md Add mention to the main README about new libraries [ci skip] 2019-01-13 20:22:14 +00:00
RELEASING_RAILS.md Move all npm packages to @rails scope 2019-01-10 11:01:57 -05:00
version.rb Preparing for 6.0.0.beta1 release 2019-01-18 15:42:12 -05:00
yarn.lock Move all npm packages to @rails scope 2019-01-10 11:01:57 -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; Action Mailbox, a library to receive emails within a Rails application; Active Job, a framework for declaring jobs and making them run on a variety of queuing 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; Action Text, a library to handle rich text content; 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.