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Ruby on Rails
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Ernie Miller 9f3b8cd5a5 Fix has_many assocation w/select load after create
If you create a new record via a collection association proxy that has
not loaded its target, and which selects additional attributes through
the association, then when the proxy loads its target, it will
inadvertently trigger an ActiveModel::MissingAttributeError during
attribute writing when CollectionAssociation#merge_target_lists attempts
to do its thing, since the newly loaded records will possess attributes
the created record does not.

This error also raises a bogus/confusing deprecation warning when
accessing the association in Rails 3.2.x, so cherry-pick would be
appreciated!
2012-10-05 18:36:44 -04:00
actionmailer Merge pull request #7708 from bdurand/optimize_log_subscribers 2012-10-01 20:28:31 -07:00
actionpack Revert "Use flat_map { } instead of map {}.flatten" 2012-10-05 12:07:16 -03:00
activemodel Use the flat_map method. 2012-10-03 00:17:10 -03:00
activerecord Fix has_many assocation w/select load after create 2012-10-05 18:36:44 -04:00
activesupport Revert "Use flat_map { } instead of map {}.flatten" 2012-10-05 12:07:16 -03:00
ci remove duplicate build runs in travis. These extra runs were used to 2012-07-24 16:44:20 -07:00
guides Revert "Use flat_map { } instead of map {}.flatten" 2012-10-05 12:07:16 -03:00
railties Fix middleware cache tests enabling rack_cache 2012-10-05 14:03:13 -05:00
tasks
tools fix Example: Rename tools/profile_requires -> tools/profile 2012-10-06 01:32:02 +09:00
.gitignore moves the guides up to the root directory 2012-03-17 08:32:49 -07:00
.travis.yml
.yardopts
CONTRIBUTING.md add some kindness 2012-09-18 17:57:37 +02:00
Gemfile Fix the coffee-rails dependecy version 2012-10-05 10:35:03 -03:00
install.rb
load_paths.rb require "rubygems" is obsolete in Ruby 1.9.3 2012-05-13 14:47:25 +02:00
rails.gemspec Require bundler 1.2 2012-08-31 20:59:15 +02:00
RAILS_VERSION
Rakefile fix rdoc task for Action Mailer documentation 2012-09-17 15:25:33 -05:00
README.rdoc -h also shows help options. 2012-03-19 17:53:27 +05:30
RELEASING_RAILS.rdoc proper casing in pronouns; relocate the pro git book [ci skip] 2012-08-11 02:19:51 -04:00
version.rb

== 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)}[http://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93controller] 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}[link:/rails/rails/blob/master/activerecord/README.rdoc].

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}[link:/rails/rails/blob/master/actionpack/README.rdoc].

== 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 <tt>--help</tt> or <tt>-h</tt> for options.

4. 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:

* The README file created within your application.
* The {Getting Started with Rails}[http://guides.rubyonrails.org/getting_started.html].
* The {Ruby on Rails Tutorial}[http://railstutorial.org/book].
* The {Ruby on Rails Guides}[http://guides.rubyonrails.org].
* The {API Documentation}[http://api.rubyonrails.org].

== Contributing

We encourage you to contribute to Ruby on Rails! Please check out the {Contributing to Rails
guide}[http://edgeguides.rubyonrails.org/contributing_to_ruby_on_rails.html] for guidelines about how
to proceed. {Join us}[http://contributors.rubyonrails.org]!

== Build Status {<img src="https://secure.travis-ci.org/rails/rails.png"/>}[http://travis-ci.org/rails/rails]

== Dependency Status {<img src="https://gemnasium.com/rails/rails.png?travis"/>}[https://gemnasium.com/rails/rails]

== License

Ruby on Rails is released under the MIT license:

* http://www.opensource.org/licenses/MIT