Rails - Mar 2006 - multiple virtual hosts within sigle rails installation

Hello,

I''m proting an in-house application to ruby and RoR. The application  
was in development & production
for over 3 years. It''s about 50K LOC in php and python (using  
twisted.python library). Porting from php to RoR is like a breath of  
fresh air, and i have been able to ''fake'' most of the
twisted.python
features I use with ruby.

But I''m stuck with a stupid url mapping problem :(
I need severeal 3rd level domains to map to different controller  
namespaces.
adminstuff.mydomain.com/controller has to map to  
Adminstuff::Controller in app/adminstuff/controller
customer.mydomain.com/controller has to map to Customer::Controller  
in app/cuscomer/controller etc.

It is a single application - it shares all config files, all models,  
all libraries. Only the controllers and domain names are different.

The rails url map feature doesn''t seem to support this kind of mapping.
I also tried to use url rewriting (with lighttpd) - looks like it  
doesn''t work for rails pages - dispatch.fcgi always gets the full url  
without rewriting. Url rewriting works with static files though.

Any suggestions how I can accomplish this wihtout patching rails  
dispatch methods?
--
best regards,
Alex Zhukov
baron.pampa@gmail.com