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

Take a look at this middleware, it should do precisely what you want:

http://github.com/iSabanin/www_ditcher

Let me know if that worked for you.

Answer 2

There's a better approach if you're using Rails 3. Just take advantage of the routing awesomeness.

Foo::Application.routes.draw do
  constraints(:host => /^example.com/) do
    root :to => redirect("http://www.example.com")
    match '/*path', :to => redirect {|params| "http://www.example.com/#{params[:path]}"}
  end
end

Answer 3

In Rails 3

#config/routes.rb
Example::Application.routes.draw do
  constraints(:host => "www.example.net") do
    match "(*x)" => redirect { |params, request|
      URI.parse(request.url).tap { |x| x.host = "example.net" }.to_s
    }
  end
  # .... 
  # .. more routes ..
  # ....
end

Answer 4

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

Answer 5

A one-line version of Duke's solution. Just add to the top of routes.rb

match '(*any)' => redirect { |p, req| req.url.sub('www.', '') }, :constraints => { :host => /^www\./ }

Answer 6

For Rails 4 the above solutions have to be appended with the Verb construction e.g. via: [:get, :post]. Duke's solution becomes:

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