Ruby 3.0pre on App Engine

=Rails 3.0.pre on App Engine

You can Rails 3 on App Engine, but it won't be especially useful until bundler 10. You should try these instead:

- Rails 2.3.5: DataMapper version: http://gist.github.com/268192
- Rails 2.3.5: TinyDS version: http://gist.github.com/269075

==Install the Development Environment

The gems for the development environment include a pre-release appengine-tools gem that provides a pre-release version of jruby-rack.
 sudo gem install google-appengine

==Install Rails 3.0.pre with required patches

Create a folder for your app
 mkdir rails_app; cd rails_app

Download and run the setup script
 curl -O http://appengine-jruby.googlecode.com/hg/demos/rails/rails_appengine.rb
 ruby rails2_appengine.rb

==Working with Your Rails App

Start development server
 dev_appserver.rb .

Publish to production
 appcfg.rb update .