Django form doesn't use the default primary key - mysql

Question

I use IntegerField in Answer form for getting id of question page. But IntegerField doesn't get the id page, that get title of this page. I thought it because primary key is title, but not, I tried to set id = models.AutoField(primary_key=True) in Question and Answer models, but the situation is the same. This iss my form class:
class AddAnswerForm(forms.Form):
text = forms.CharField(widget=forms.Textarea)
question = forms.IntegerField()
def clean_question(self):
question_id = self.cleaned_data['question']
try:
question = Question.objects.get(id=question_id)
except Question.DoesNotExist:
question = None
return question
def clean(self):
pass
def save(self):
answer = Answer(**self.cleaned_data)
answer.save()
return answer
That's my models:
class Question(models.Model):
title = models.CharField(default='', max_length=255)
text = models.TextField(default='')
added_at = models.DateTimeField(blank=True, auto_now_add=True)
rating = models.IntegerField(default=0)
author = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='question_user')
likes = models.ManyToManyField(User, related_name='question_like_user')
def __str__(self):
return self.title
def get_url(self):
return '/question/{}/'.format(self.id)
class Answer(models.Model):
text = models.TextField(default='')
added_at = models.DateField(blank=True, auto_now_add=True)
question = models.ForeignKey(Question, on_delete=models.SET_NULL, null=True, related_name='answer_question')
author = models.ForeignKey(User, on_delete=models.SET_NULL, null=True, related_name='answer_user')
def __str__(self):
return self.text
And that's my view:
def question(request, pk):
try:
q = Question.objects.get(id=pk)
except Question.DoesNotExist:
raise Http404
a = Answer.objects.all()
u = User.objects.all()
if request.method == 'POST':
form = AddAnswerForm(request.POST)
if form.is_valid():
_ = form.save()
url = q.get_url()
return HttpResponseRedirect(url)
else:
form = AddAnswerForm(initial={
'question': q,
'answer': a,
'user': u,
})
return render(request, 'question.html',
{
'form': form,
'question': q,
'answer': a,
'user': u,
})
Thank you.