Site wide redirect

Question

I created a new website, hosted with Heroku, about 3 weeks ago and have since decided I wanted to change its domain name. I was trying to figure out how to do a site wide redirect and I'm thinking of going with something like in my application controller (add a before filter):

def new_domain
  redirect_to url_for(:controller => params[:controller], :action => params[:action], :id => params[:id], :host => 'http://newdomain.com'), :status => 301
end

This obviously will not work with all actions and will fail if the url is passing additional parameters. I was wondering if there is something more general I can do so I don't have to have a bunch of if else clauses?

Answer 1

Try this.

params[:host] = 'http://newdomain.com'
redirect_to url_for(params), :status => 301

'url_for' take a hash and by changing the 'host' in the params, it should go to the new host with the rest of the params.

Answer 2

As recent versions of Rails now adhere to the Rack interface and can incorporate Rack middleware it might be worth taking a look at Canonical Host. I haven't used it myself but at first glance it sounds like it might be nice solution.