How do I redirect without www using Rails 3 / Rack?

Question

I understand there are a lot of questions that answer this. I\'m familiar with .htaccess and nginx.conf methods, but I do not have access to such t

Answer 1

I really like using the Rails Router for such things. Previous answers were good, but I wanted something general purpose I can use for any url that starts with "www".

I think this is a good solution:

constraints(:host => /^www\./) do
  match "(*x)" => redirect { |params, request|
    URI.parse(request.url).tap {|url| url.host.sub!('www.', '') }.to_s
  }
end