CustomAuthorize

  public class CustomAuthorize : AuthorizeAttribute
    {
        protected override void HandleUnauthorizedRequest(AuthorizationContext filterContext)
        {
            filterContext.Result = new RedirectResult("~/Home/Chyba403");
        }

        public override void OnAuthorization(AuthorizationContext filterContext)
        {
            if (this.AuthorizeCore(filterContext.HttpContext))
            {
                base.OnAuthorization(filterContext);
            }
            else
            {
                this.HandleUnauthorizedRequest(filterContext);
            }
        }
    }

    [CustomAuthorize(Roles = "admin,publisher")]
    public ActionResult EditovatAktualitu(int id)