> In short, we're talking about MVC when a model can notify (through the Observer pattern) the views about the changes. It's not possible in a classical Rails app (it's possible when you use WebSockets, Pusher or a similar technology, but it's not so popular yet.). MVC was popular in desktop apps.

MTV isn't really Web nature. You change the database schema, and the browser client automatically refreshes? I don't think it's really useful. An ad-hoc solution would be better.