class CommentCreateView(LoginRequiredMixin, CreateView):
    model = Comment
    form_class = CommentForm

    def form_valid(self, form):
        form.instance.user = self.request.user
        super().form_valid(form)
        return render(self.request, 'article/include/comment.html', {'comment': form.instance, })

    def form_invalid(self, form):
        form.instance.user = self.request.user
        super().form_invalid(form)
        return render(self.request, 'article/forms/comment_form.html', {'comment_form': form, }, status=400)