Rails - May 2006 - class filter: cannot call protected controller methods

Greetins all,

I''m rewriting a filter from the method form to a class filter.(see 
below)

Problem: some controller - redirect_to - and route - *_url - methods are 
protected (redirect_to, f.ex.), and cannot be called.

Is this intended?
Is there a solution workaround?

TIA

Alain

BEFORE:
-----------
    before_filter   :login_required, :except => [:welcome,:login]
    def login_required
        unless current_user
            session[:jumpto]  = request.parameters
            redirect_to login_invite_url
        end
    end


AFTER (does not compile)
-----------

    class AuthenticationFilter
        def self.filter(controller)

            login_required = 
[''welcome'',''login''].include?(controller.action_name)
            if login_required &&  !controller.current_user
                controller.session[:jumpto]  = 
controller.request.parameters
                controller.redirect_to controller.login_invite_url 
<<<<------- ERROR : DOES NOT COMPILE !!
            end
        end
    end
    before_filter   AuthenticationFilter

-- 
Posted via http://www.ruby-forum.com/.