//some jobs of controller was done by cache,rendering ought to be finished by controller
func (this *UserNav) Render(args *fragment.RenderArgs) template.HTML {
//nil user,return a fixed string
if args.User == nil {
//lang can't be access when user == nil
log4go.Debug("not login")
return _user_nav_not_login
}
key := args.User.UserName
return cache.Render("common/user_nav", key, args, this)
}
func (this *NavBar) Render(args *fragment.RenderArgs) template.HTML {
return cache.Render("layout/nav_bar", "", args, this)
}