Rails 2.3 Upgrade Tips

Posted by Ben Reubenstein Mon, 16 Mar 2009 16:53:00 GMT

Today Rails 2.3 was pushed. Upgrading some applications created a couple of issues.
NameError (uninitialized constant ApplicationController)

In previous versions of Rails, the generator would create application.rb for the Application Controller. In 2.3 the file is now properly named application_controller.rb.

NameError (uninitialized constant ActionController::Caching::Sweeper)

This is a bug that is part of the 2.3 release. The fix is was supposedly resolved according to this ticket previous to 2.3 but something is still off.