forms.py

import django
from django import forms
from django.conf import settings
from django.utils.translation import gettext_lazy as _
from django_comments.forms import CommentForm

from .models import ThreadedComment


class ThreadedCommentForm(CommentForm):
    title = forms.CharField(label=_('Title'), required=False, max_length=getattr(settings, 'COMMENTS_TITLE_MAX_LENGTH', 255))
    parent = forms.IntegerField(required=False, widget=forms.HiddenInput)

    def __init__(self, target_object, parent=None, data=None, initial=None):
        # Using collections.OrderedDict from Python 2.7+
        # This class does not have an insert method, have to replace it.
        from collections import OrderedDict
        keys = list(self.base_fields.keys())
        keys.remove('title')
        keys.insert(keys.index('comment'), 'title')

        self.base_fields = OrderedDict((k, self.base_fields[k]) for k in keys)
        self.parent = parent
        if initial is None:
            initial = {}
        initial.update({'parent': self.parent})
        super().__init__(target_object, data=data, initial=initial)

    def get_comment_model(self):
        return ThreadedComment

    def get_comment_create_data(self, *args, **kwargs):
        d = super().get_comment_create_data(*args, **kwargs)
        d['parent_id'] = self.cleaned_data['parent']
        d['title'] = self.cleaned_data.get('title', '')  # title can be removed
        return d