José Valim has written a book[1] that shows how to swap in all manner of functionality into Rails 3. It covers alternate renderers (PDF), alternate models, alte

José Valim has written a book[1] that shows how to swap in all manner of functionality into Rails 3. It covers alternate renderers (PDF), alternate models, alternate template stores (SQL), custom template engines, using the built-in notification system, and alternate backends for I18n. I highly recommend it. [1] http://pragprog.com/book/jvrails/crafting-rails-applications http://pragprog.com/book/jvrails/crafting-rails-applications