local variable 'content' referenced before assignment django - django

Question

I'm trying to do a view in which users can respond by commenting or replying to a chapter by answering a form but I keep getting the local variable 'content' referenced before assignment error and I don't know why.
When I removed the content field the same happened to the parent field.
class ChapterView(DetailView):
model = Chapter
template_name = 'mangas/chapter.html'
slug_field = 'chapter_slug'
slug_url_kwarg = 'chapter_slug'
def get_context_data(self , **kwargs):
data = super().get_context_data(**kwargs)
comments = ChapterComment.objects.filter(chapter=self.get_object())
comments_number = comments.count()
data['comments'] = comments
data['comments_number'] = comments_number
data['comment_form'] = CommentForm()
return data
def post(self , request , *args , **kwargs):
if self.request.method == 'POST':
comment_form = CommentForm(self.request.POST)
comments = ChapterComment.objects.filter(chapter=self.get_object())
if comment_form.is_valid():
content = comment_form.cleaned_data['content']
for comment in comments:
if comment.content == content:
messages.info(request, 'The comment is duplicate.')
return redirect(self.request.path_info)
try:
parent = comment_form.cleaned_data['parent']
except:
parent = None
new_comment = ChapterComment(content=content, author=self.request.user , chapter=self.get_object(), parent=parent)
new_comment.save()
return redirect(self.request.path_info)
class ChapterComment(models.Model):
author = models.ForeignKey(User, on_delete=models.CASCADE)
chapter = models.ForeignKey(Chapter, on_delete=models.CASCADE, related_name='comments')
content = models.CharField(max_length=550)
date_posted = models.DateTimeField(auto_now_add=True)
parent = models.ForeignKey('self',on_delete=models.CASCADE, related_name='replies')
class Meta:
verbose_name = 'chapter-comment'
verbose_name_plural = 'chapter-comments'
ordering=['-date_posted']
#property
def children(self):
return ChapterComment.objects.filter(parent=self).reverse()
#property
def is_parent(self):
if self.parent is None:
return True
return False
def get_absolute_url(self):
return reverse('chapter', kwargs={'pk': self.pk})
def __str__(self):
return self.author.username + ' commented ' + self.content[:50]

Answer 1

new_comment = ChapterComment(content=content, author=self.request.user , chapter=self.get_object(), parent=parent)
Here you are trying to use content, but if your form is invalid
if comment_form.is_valid():
content = comment_form.cleaned_data['content']
content does not get assigned a value yet. Same is true for parent
new_comment = ChapterComment(content=content, author=self.request.user , chapter=self.get_object(), parent=parent)
new_comment.save()
This code has to be at the same identiation as except
And if the form is not valid you wouldnt want to create a new comment