module ::ActionController
  class AbstractRequest
    def request_method_with_facebooker
      if parameters[:_method].blank?
        if %w{GET HEAD}.include?(parameters[:fb_sig_request_method])
          parameters[:_method] = parameters[:fb_sig_request_method]
        end
      end
      request_method_without_facebooker
    end

    if new.methods.include?("request_method")
      alias_method_chain :request_method, :facebooker
    end

    def xml_http_request_with_facebooker?
      parameters["fb_sig_is_mockajax"] == "1"  ||
      parameters["fb_sig_is_ajax"] == "1" ||
      xml_http_request_without_facebooker?
    end
    alias_method_chain :xml_http_request?, :facebooker
    # we have to re-alias xhr? since it was pointing to the old method
    unless defined? :xhr?
      alias xhr? :xml_http_request?
    end

  end
end