seperated the methods of the basic controller

lib/zero/controller.rb

@@ -20,7 +20,17 @@ module Zero
     # build the response and return it
     # @return Response a rack conform response
     def response
-      raise NotImplementedError.new("Not Implemented in ${__FILE__}")
+      process if respond_to?(:process)
+      render
+      @response
+    end
+
+    def process
+      raise NotImplementedError.new("'render' not implemented in #{self.class}")
+    end
+
+    def process
+      raise NotImplementedError.new("'render' not implemented in #{self.class}")
     end
   end
 end