Topic: Switching from acts_as_authenticated Rails 3

Hi I am trying to upgrade an application to rails 3 that was written in Rails 2.3.5 one of the biggest challenge I am facing is plug-in acts_as_authenticated.

I would like to know if there is a tutorial or steps to migrate from acts_as_authenticated to a simple custom authentication.

My application requires very basic authentication.. I saw railscast on writing authentication from scratch that was not helpful

the biggest challenge is current_user method written by the plug-in. Any help would be greatly appreciated