class CommentDelete(DeleteView):
    model = Comments
    template_name = 'blog/comments_delete.html'
    def delete(self, request, *args, **kwargs):
        print(self.request.META['HTTP_REFERER'])
        return super().delete(request)
    def get_success_url(self):
        print(self.request.META['HTTP_REFERER'])
        return reverse_lazy('user_detail', kwargs={'pk': self.object.post.author.pk})


Я хочу сделать подобное:
def delete(self, request, *args, **kwargs):
        if self.request.META['HTTP_REFERER'] == http://127.0.0.1:8000/blog:
			success_url = '/blog/'
		else:
			success_url = reverse_lazy('user_detail', kwargs={'pk': self.object.post.author.pk})