downloads_controller.rb

class DownloadsController < ApplicationController
  before_filter :can_create?, :only => [:new, :create]
  before_filter :can_edit?, :only => [:edit, :update, :destroy]

  resources_controller_for :downloads
  
  helper_method :can_create?, :can_edit?
  def can_create?
    return !!(current_user && current_user.superuser?)
  end

  def can_edit?
    return !!(current_user && current_user.superuser?)
  end
end