ModelForm with ContentType not saving to Database

[Muhammad]

Hi All,

I have been stuck on this for the last few hours and nothing seems to work. I would greatly appreciate your help. 

I created a Comment model (which uses ContentType) so that I can use it when any model that I want to. 

I also created a CommentForm() ModelForm instance for the Comment model. 

I am testing it with the BlogPost model for adding comments to it. But when I submit the form, it doesn't save it to the DB. How can I fix this?

Here are the models in question:

a. Comment model:

        class Comment(models.Model):

heading = models.CharField(max_length=55, verbose_name="Subject")

body = models.TextField(verbose_name="Comment Here")

comment_pubdate = models.DateTimeField(auto_now_add=True, verbose_name="Date Added")

poster = models.ForeignKey(settings.AUTH_USER_MODEL, editable=False)

content_type = models.ForeignKey(ContentType, related_name="comments")

object_id = models.PositiveIntegerField()

content_object = generic.GenericForeignKey('content_type', 'object_id')

b. The CommentForm

         class CommentForm(ModelForm):

class Meta:

model = Comment

fields = ('heading', 'body')

c. The postcomment() view:

     def postcomment(request, object_id, object_link):

          ct = ContentType.objects.get(id=obj_id)

          post = ct.get_object_for_this_type(link=obj_link)

          if request.method=="POST" and not(request.user.is_anonymous):

              poster = request.user

              my_comment = Comment(content_object=post, poster=poster)

              comment_form = CommentForm(request.POST, instance=my_comment)

              

              if comment_form.is_valid():

                    comment_form.save()

                    return HttpResponseRedirect(post.get_absolute_url())

               else:

                      # Placeholder for testing if there was an error with the form

                    return HttpResponse("Error!")

        else:

               comment_form = CommentForm()

        return HttpResponseRedirect(post.get_absolute_url())

When I render the BlogPost page (from another view), it loads without errors. The BlogPost page's template has (in addition to the rendering stuff):

 <form action="{% url 'blog:postcomment' post.id post.link '%}" method="post">

(and rest of the <form> stuff)

But when I submit the form, it doesn't process it. Where did I go wrong, in the view or elsewhere? 

Thank you for your help.

Sincerely,

Muhammad