# form
class CommentForm(forms.ModelForm):
    class Meta:
        model = Comment
        fields = ['text']

# model
class Comment(models.Model):
    text = models.TextField()
    user = models.ForeignKey(User, on_delete=models.CASCADE)
    created_at = models.DateTimeField(auto_now_add=True)

    def __str__(self):
        return self.user.username

# view
class CommentCreateView(LoginRequiredMixin, CreateView):
    model = Comment
    template_name = 'news/comment_create.html'
    form_class = CommentForm
    success_url = 'news/'

    def form_valid(self, form):
        form.instance.user = self.request.user
        super(CommentCreateView, self).form_valid(form)