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Sean Griffin f696494aed Don't attempt to specify datetime precision unless supported
Specifically, versions of MySQL prior to 5.6 do not support this, which
is what's used on Travis by default. The method `mysql_56?` appeared to
only ever be used to conditionally apply subsecond precision, so I've
generalized it and used it more liberally.

This should fix the test failures caused by #20317
2015-09-23 09:09:50 -06:00
actionmailer Added assertion for error messages for nil and unknown delivery methods 2015-09-22 19:11:03 +05:30
actionpack Updated Mime Negotiations docs [ci skip] 2015-09-23 14:52:27 +05:30
actionview Merge pull request #21712 from amitsuroliya/html_fix 2015-09-22 10:35:47 +02:00
activejob Use Sidekiq.options to set initial wait 2015-09-21 14:02:41 +01:00
activemodel Merge pull request #20317 2015-09-23 09:01:38 -06:00
activerecord Don't attempt to specify datetime precision unless supported 2015-09-23 09:09:50 -06:00
activesupport Merge pull request #21678 from ronakjangir47/array_to_formatted_s_docs 2015-09-22 10:25:14 +02:00
ci Add the bug report templates to the Travis CI build 2015-06-05 15:29:48 -05:00
guides Remove leading slash from path 2015-09-22 22:05:06 -06:00
railties stop using deprecated method in mailers controller 2015-09-23 10:13:52 +09:00
tasks Allow release when CHANGELOG is changed 2015-08-24 15:07:27 -03:00
tools make it possible to customize the executable inside rereun snippets. 2015-06-13 11:58:43 +02:00
.gitignore .gitignore: Ignore .ruby-version in any subdir 2015-09-07 16:37:14 -07:00
.travis.yml Added beanstalkd to Travis so ActiveJob integration tests for beanstalkd can run 2015-09-19 15:10:14 -07:00
.yardopts Let YARD document the railties gem 2010-09-09 18:24:34 -07:00
CODE_OF_CONDUCT.md Move the CoC text to the Rails website 2015-08-21 12:32:59 -07:00
CONTRIBUTING.md Changed 'ask the rubyonrails-talk mailing list.' to 'ask it on the rubyonrails-talk mailing list.' 2015-05-03 16:16:03 +05:30
Gemfile Use master version of Turbolinks gem 2015-09-21 14:02:41 +01:00
Gemfile.lock Update to latest turbolinks 2015-09-21 14:10:56 +01:00
load_paths.rb require "rubygems" is obsolete in Ruby 1.9.3 2012-05-13 14:47:25 +02:00
rails.gemspec Require sprockets-rails >= 2 2015-09-01 09:30:38 -07:00
RAILS_VERSION Start Rails 5 development 🎉 2014-11-28 15:00:06 -02:00
Rakefile Remove activejob integration tests 2014-08-12 10:07:21 +00:00
README.md Fix typo in readme file 2015-09-01 18:33:01 +09:00
RELEASING_RAILS.md Convert Releasing Rails guide to Markdown 2015-08-15 09:21:46 -04:00
version.rb Start Rails 5 development 🎉 2014-11-28 15:00:06 -02:00

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 Model layer represents your domain model (such as Account, Product, Person, Post, etc.) 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. You can read more about Active Record in its README. 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. You can read more about Active Model 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 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. You can read more about Action Pack in its README.

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. You can read more about Action View in its README.

Active Record, Action Pack, and Action View can each be used independently outside Rails. In addition to them, Rails also comes with Action Mailer (README), a library to generate and send emails; Active Job (README), a framework for declaring jobs and making them run on a variety of queueing backends; and Active Support (README), 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. Using a browser, go to http://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:

Contributing

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!

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.