We recommend Ruby 1.9.3 for use with Rails. Rails 3.2 is the last one that supports Ruby 1.8. Ruby 1.8.6 and earlier are not supported, neither is version 1.9.1.
Source: Compile it yourself
Windows installer: Ruby, popular extensions, editor
OS X 10.5+: Included with developer tools
(then do "gem update rails")
RubyGems is the standard Ruby package manager.
It's similar to apt-get, emerge, and other OS package managers.
Download
With RubyGems loaded, you can install all of Rails and its dependencies through the command line:
gem install rails
New versions of Rails can be installed the same way.
Create your application skeleton and start the server:
rails new path/to/your/new/application
cd path/to/your/new/application
rails server
You're running Ruby on Rails! Follow the instructions on localhost:3000.
TextMate on OS X has long been the favored Rails editor, but the classic editors are still going strong. See VIM for Rails and Emacs for Rails. For a full-on IDE, check out RadRails, RubyMine, 3rd Rail, or Netbeans for Ruby.
"Rails", "Ruby on Rails", and the Rails logo are registered trademarks of David Heinemeier Hansson. All rights reserved.
Rails is released under the MIT license. Ruby under the Ruby License.
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