Rails: redirect to current path but different subdomain

Question

I think this should be fairly easy but I\'m not familiar with how it\'s done...

How do you write a before filter that would check if the current request is for certa

Answer 1

A simple choice to redirect from subdomain to subdomain would be the following

redirect_to subdomain: 'www', :controller => 'www', :action => "index"

This would be called on a domain name for example foo.apple.com would then go to www.apple.com

Answer 2

An even simpler option without the need to do a string sub or specify the controller or action would be to use

redirect_to url_for(subdomain: 'www', only_path: false)

Answer 3

ActionController::Redirecting#redirect_to allows you to pass an absolute URL, so the easiest thing to do would be to pass it one with something like:

redirect_to request.url.sub('blog', 'www')