README.rdoc

Rails 2.3.5 on App Engine (TinyDS)¶ ↑

Recently, Takeru Sasaki was able to patch the Rails 2.3.5 calls to rubygems, and now we have it working on App Engine. He also created a datastore adapter called TinyDS. I just created an integration plugin called Rails_TinyDS that provides certain ActiveRecord method calls for Rails 2.3.5 generated scaffold.

See the DataMapper version also: gist.github.com/268192

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 2.3.5 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/rails2/rails2_td_appengine.rb
ruby rails2_td_appengine.rb

Working with Your Rails App¶ ↑

Start development server

dev_appserver.rb .

Open local console

appcfg.rb run -S irb -r config/environment

Publish to production

appcfg.rb update .

Support for generators¶ ↑

We disable rubygems in the development environment, and the generators from Rails 2 perform various Gem dependency checks that are too difficult to patch, so we run the generators from the MRI.

sudo gem install rails_tiny_ds activerecord-nulldb-adapter

Generate a restful controller and add it to config/routes.rb

./script/generate scaffold article title:string summary:text url:string \
-f --skip-migration

Generate a model for TinyDS

./script/generate td_model article title:string summary:text url:string -f

You’ve created a RESTful controller, and a TinyDS model

article.rb

class Article < TinyDS::Base
  property :title,      :string
  property :summary,    :text
  property :url,        :string
  property :created_at, :time
  property :updated_at, :time
end