by Daniel Kehoe Last updated 23 November 2012 Rails 4.2 Version For a Rails 4.2 example application with OmniAuth, see the rails-omniauth application, with an OmniAuth Tutorial. Rails 3.2 Version This tutorial showis how to create a Rails 3.2 application using OmniAuth with Mongoid. OmniAuth gives you ready-made authentication using a service provider such as Twitter or Facebook. Mongoid gives acc