class GamesController < ApplicationController helper_method :sort_column, :sort_direction def index @games = Game.order(sort_column + " " + sort_direction) if params[:status] @games = @games.where(status: params[:status]) end end private def sort_column Game.column_names.include?(params[:sort]) ? params[:sort] : "started_on" end def sort_direction %[asc desc].include?(params[:dir]) ? params[:dir] : "asc" end end