routing of an extjs request

extdirect.rb

# register middleware
config.use.middleware "ExtDirectRouter" "my/special/url"


#Calling the extjs router brings me the class of the controller as raw http json request or form_post
# more here http://rubyforge.org/docman/view.php/7639/9465/Ext.Direct-pre-alpha.pdf

#I can change the request uri in the controller and starts a new @app.call, than return the response
# example is here https://github.com/extjs/direct-rails/blob/master/lib/rack/remoting_provider.rb


# my controller should handle ext direct requests

# My controller works more like a service controller (domain driven design), not a standard resource controller

# so I have perhaps no defined route
# is this evil???

class MyControllerService < ApplicationController

 respond_to :ext_direct, :only => :index

 def index

 end

 def get_status

 end

end

# So I have to define the controller routes in the routes.rb, that's stupid


#MY QUESTION

# Are there any solutions to call a controller from a middleware without changing the request path info??