Using Thin web server configuration in development , how to have eq. Apache RedirectMatch permanent

In production, using Apache I can use RedirectMatch permanent to force
url
wo subdomain to use www.

<VirtualHost :80>
ServerName example.com
RedirectMatch permanent ^/(.
) http://www.example.com/$1

How can I get the same behavior when using Thin in dev mode ?
need to change all example.com/… urls into www.example.com/… if
I
don’t want to touch the routes ?

thanks for feedback

[SOLVED] but using Rails3 routes, maybe there is a better way ?

host =
Rails.application.config.action_mailer.default_url_options[:host]

constraints(:host => host ) do
root :to => redirect(“http://www.#{host}”)
match ‘/*path’, :to => redirect {|params|
http://www.#{host}/#{params[:path]}”}
end

Le jeudi 15 novembre 2012 11:03:40 UTC+1, Erwin a crit :