Dynamic Scope Methods in Edge Rails

Please follow the link below

http://satishchauhan.com/2008/12/30/dynamic-scope-methods-in-edge-rails/

Merb gets merged into Rails 3

Ruby on Rails and Merb team decided to merge both of the frameworks into a singular web framework in Rails 3. The two frameworks have much in common and share code in a variety of places.

Please click here to find the detailed post by DHH.