uploads_controller.rb

class UploadsController < ApplicationController
filter_resource_access

def vote_up 
    begin
      current_user.vote_exclusively_for(@upload = Upload.find(params[:id]))
          render :nothing => true, :status => 200
      rescue ActiveRecord::RecordInvalid
          render :nothing => true, :status => 404
    end
end


def vote_down
   begin
     current_user.vote_exclusively_against(@upload = Upload.find(params[:id]))
	render :nothing => true, :status => 200
     rescue ActiveRecord::RecordInvalid
	render :nothing => true, :status => 404
   end
end