When the iname is in the url (e.g. http://example.com/consumer/=mary)…

… the Rails :id must be nullified so that the realm is valid.

examples/rails_openid/app/controllers/consumer_controller.rb

@@ -46,7 +46,7 @@ def start
       oidreq.return_to_args['force_post']='x'*2048
     end
     return_to = url_for :action => 'complete', :only_path => false
-    realm = url_for :action => 'index', :only_path => false
+    realm = url_for :action => 'index', :id => nil, :only_path => false
 
     if oidreq.send_redirect?(realm, return_to, params[:immediate])
       redirect_to oidreq.redirect_url(realm, return_to, params[:immediate])