<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def render(self, request, redirect_url=None, **kwargs):
 """ Uses `self.template` to render a response. :param request: The current request object. :param redirect_url: If given this will return the \ redirect method instead of rendering the normal template. \ Renders providing this argument are referred to as a \ 'render redirect' in this documentation. :param kwargs: The current context keyword arguments. """

        if redirect_url:
            # Redirection is used when we click on `Save` for ordering
            # items on `ListView`. `kwargs` contains `message` but that
            # one is not passing through redirection. That's the reason for using
            # directly `messages` and get message on result template
            if kwargs.get('obj') is None:
                messages.success(request, kwargs.get('message'))
            return self.redirect(request, redirect_url, **kwargs)

        kwargs = self.update_kwargs(request, **kwargs)
        return render(request, self.template, kwargs)