Django Model Form clean method not being called - django

Question

I have used a Django model form to create HackathonTeam instances. The issue I am facing here is that custom clean method that I have used is not being called. All the other default validations are happening correctly.
# models.py
class HackathonTeam(models.Model):
name = models.CharField(max_length=30)
leader = models.ForeignKey(CustomUser, on_delete=models.CASCADE, related_name='leader_teams')
hackathon = models.ForeignKey(Hackathon, on_delete=models.CASCADE, related_name='hack_teams')
vacancies = models.PositiveIntegerField(default=0)
current_members = models.ManyToManyField(CustomUser, related_name='member_teams')
skills_required = models.ManyToManyField(Skill, related_name='hack_requirements')
cutoff_date = models.DateTimeField(null=True, blank=True) # Someone may not wish to have a cut-off date
closed = models.BooleanField(default=False)
# forms.py ########
class HackathonTeamForm(forms.ModelForm):
class Meta:
model = HackathonTeam
exclude = ['leader', 'current_members', 'closed']
def clean(self):
print("Inside clean")
cleaned_data = super(HackathonTeamForm, self).clean()
print(cleaned_data)
if HackathonTeam.objects.filter(hackathon=cleaned_data.get("hackathon"),
name=cleaned_data.get("name")).exists():
print(1)
raise forms.ValidationError("A team with the same name already exists.")
return cleaned_data
# views.py #########
#login_required(login_url='users:login')
def add_hackathon_team(request):
if request.method == 'POST':
form = HackathonTeamForm(request.POST)
if form.is_valid():
cd = form.clean()
print(cd)
print("Data is valid")
# form.save()
team = form.save(commit=False)
team.leader = request.user
team.save()
return redirect('users:view_hackathon_team', pk=team.id)
else:
form = HackathonTeamForm()
return render(request, 'users/add_hackathon_team.html', {'form': form})
The print statement in the view is being printed and new Teams are created as well. The only issue is that the clean method is not called and duplicate Teams can be created as well.

Answer 1

inside HackathonTeamForm class add the init function:
def __init__(self, *args, **kwargs):
super(HackathonTeamForm, self).__init__(*args, **kwargs)
you should use self.cleaned_data['field_name'] instead of (to make sure its not causing the problem, since you arent calling super maybe the fields are blank) :
cleaned_data = super(HackathonTeamForm, self).clean()