I cannot submit the comments for multi posts in Django - django

Question

I have a feed and in this feed have posts and each post have comments, Now I can submit a comment for just the first post but when I try to come to the second or third post and submit comment this error rise
ValueError: The view videos.views.add_comment_post didn't return an HttpResponse object. It returned None instead.
I thought that the problem with the posts id conflict with each other so I passed all the comment fields to the template and the same error still happen. "this problem happen with any post except the first one"
My comments view
comment_form = PostCommentForm(request.POST )
if comment_form.is_valid():
user_comment = comment_form.save(commit=False)
user_comment.author = request.user
user_comment.save()
result = comment_form.cleaned_data.get('content')
user = request.user.username
return JsonResponse({'result': result, 'user': user})
My Post model
class Post(models.Model):
author = models.ForeignKey(Account, on_delete=models.CASCADE)
article = models.TextField(null=True, blank=True)
photo_article = models.ImageField(max_length=255, upload_to=get_poster_filepath)
created_date = models.DateTimeField(auto_now_add=True)
My comments model
class PostCommentIDE(models.Model):
post = models.ForeignKey(Post, on_delete=models.CASCADE, related_name='ide_com')
author = models.ForeignKey(Account, on_delete=models.CASCADE)
content = models.TextField()
created_date = models.DateTimeField(auto_now_add=True)
My comments Form
class PostCommentForm(forms.ModelForm):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
class Meta:
model = PostCommentIDF
fields = {'post', 'content'}
widgets = {
'content': forms.Textarea(attrs={'class': 'rounded-0 form-control', 'rows': '1', 'placeholder': 'Comment', 'required': 'True', })
}
def save(self, *args, **kwargs):
PostCommentIDF.objects.rebuild()
return super(PostCommentForm, self).save(*args, **kwargs)

Answer 1

when form is not valid the form is returning None.
you should return something(for example returning error messages) when form is not valid.
comment_form = PostCommentForm(request.POST)
if comment_form.is_valid():
user_comment = comment_form.save(commit=False)
user_comment.author = request.user
user_comment.save()
result = comment_form.cleaned_data.get('content')
user = request.user.username
return JsonResponse({'result': result, 'user': user})
else:
# do stuff here if form is not valid
return JsonResponse({'result': 'Something went wrong.'})