How do I handle a VirtualHost/Passenger entry for a Rails site that solely handles subdomains?

I want to use Rails 3's new subdomain features to handle all subdomain paths except www and nil.

Oppositely in a second rails app, I want to solely handle www and nil in the url path.

What would my two VirtualHost entries look like for Apache with Passenger? And in the code, for the fir开发者_高级运维st subdomain handling app, so long as I handle the new exposed :subdomain constraint in routes properly to ignore www and nil, that should prevent any conflict right?

Thanks for any input.

Looks like a ServerFault question.

NameVirtualHost *:80

# handles www.mydomain.com and mydomain.com
<VirtualHost *:80>
  ServerName mydomain.com
  ServerAlias www.mydomain.com
  DocumentRoot /data/website1/public
  <Directory /data/website1/public>
    Allow from all
    Options -Multiviews
  </Directory>
</VirtualHost>

# handles *.mydomain.com
<VirtualHost *:80>
  ServerName anything.mydomain.com
  ServerAlias *.mydomain.com
  DocumentRoot /data/website2/public
  <Directory /data/website2/public>
    Allow from all
    Options -Multiviews
  </Directory>
</VirtualHost>