twitter handle allowed.rb

      def handle_approved(handle)
        allowed = YAML::load_file('/var/www/allowed.yml')
        allowed.include?(handle.downcase)
      end

      # in the action, after the twitter handle is pulled from oauth
      if !handle_approved(handle)
        reset_session
        flash[:notice] = 'Sorry, your username is not allowed'
        logger.error "denied access for #{handle}"
        redirect_to root_url and return
      end