Single URL/route --> Different controller/action routing. Is this possible?

I am on Rails 2.0.2

I've set up routes.rb so that the URL http://mysite.com/username
routes the user to :controller => 'foo', :action => 'bar'

However, I am rev-ing my app and based on a flag in the Users table, I
want some users to go to :controller => 'foo2', :action => 'bar2'
while others should continue to get routed via :controller =>
'foo', :action => 'bar'

Is there any way at all to do this via routes.rb? Or some other hack?
I still want the URL to be http://mysite.com/username

Thanks

Yes, I can call action2 in action1 in foo controller. But how about
when I need to call action2 which is in foo2 controller? How do I get
around that?

Sounds like you want to look into using a before_filter. The job of
the filter would be to redirect the action2 users to action2 and allow
the rest to default to action1.

AndyV - I could, but then some users would be redirected and see a different URL. I’d like everyone to see the same uniform URL : http://mysite.com/myusername