Give how to do this trick: 1. Users were tables with one of the fields and table subdomain Blogs class Blog <ActiveRecord:: Base has_many: comments belongs_to: user class User <ActiveRecord:: Base has_many: blogs 2. There is a module which writes in account_subdomain subdomain address from the browser 3. The objective to have at domain.com / blogs drawing record all users, and sub.domain.com/blogs write only user's subdomain which "sub" How? Thanks!