Gappster

Quick solution for Rails to authenticate your users with Google Apps' Open Id

This gem includes code from this lib, but I haven't been able to contact the authors to let them know. If you know them, please ask them to contact me.

Just install it as a gem

gem install gappster

Include it on your environment.rb

config.gem 'gappster'

Install crudson's open_id_authentication plugin:

script/install plugin git://github.com/crudson/open_id_authentication.git

Just add the following line at the top of the controller where you want to use it, ApplicationController if you want to protect the whole app:

gappster_authentication 'crowdint.com'

Make sure you replace crowdint.com with your own Google Apps domain

Now, you will have a filter available to protect the actions you want behind Google Apps authentication:

before_filter :authenticate_with_gapps

Like all filters, you can specify specific actions using :only or :except

class ApplicationController < ActionController::Base
  gappster_authentication 'crowdint.com'

  before_filter :authenticate_with_gapps
end

• Tests
• Generators to auto install the required plugin
• Make it work with Rails 3, at this point it might, but I haven't tested it yet
• Include documentation on the needed Google Apps configuration to make it work