Exception Value: UNIQUE constraint failed: accounts_profile.user_id

[Luiz Guilherme Schiefler de Arruda]

Hello folks,

I'm studying Django and everything was ok until this morning. After creating a form using inlineformset_factory, I can't create an user. I got this error when creating the user inside the form I've created:

Exception Value:	UNIQUE constraint failed: accounts_profile.user_id

Analising and debugging a little, I think that the error occurs because, on this SQL line code (generated automatically by django) it tries to save a String inside an integer field (user_id).

• /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/django/db/backends/utils.py in execute

  65.                 return self.cursor.execute(sql, params)

      ...
  ▼ Local vars

  Variable	Value
  params	[19, '', None, None, 'F', '', '', '']
  self	<django.db.backends.utils.CursorDebugWrapper object at 0x10d94fc18>
  sql	('INSERT INTO "accounts_profile" ("user_id", "location", "birthdate", "role", ' '"gender", "site_facebook", "site_twitter", "profile_picture") VALUES (%s, ' '%s, %s, %s, %s, %s, %s, %s)')

52.             profile_formset.save()

    ...

▼ Local vars

Variable	Value
__class__	<class 'accounts.views.CreateUser'>
context	{'form': <FormSignUp bound=True, valid=Unknown, fields=(username;email;password1;password2)>, 'profile': <django.forms.formsets.ProfileFormFormSet object at 0x10d934518>, 'view': <accounts.views.CreateUser object at 0x10d9436d8>}
form	<FormSignUp bound=True, valid=True, fields=(username;email;password1;password2)>
profile_formset	<django.forms.formsets.ProfileFormFormSet object at 0x10d934518>
self	<accounts.views.CreateUser object at 0x10d9436d8>

Here is the codes:

models.py

class Profile(models.Model):

user = models.OneToOneField(User, on_delete=models.CASCADE)

location = models.CharField(max_length=30, blank=True)

birthdate = models.DateField(null=True, blank=True)

profile_picture = models.ImageField(upload_to='profile_pictures', blank=True)

def __str__(self):

return self.user.username

@property

def age(self):

TODAY = datetime.date.today()

if self.birthdate:

return u"%s" % relativedelta.relativedelta(TODAY, self.birthdate).years

else:

return None

@receiver(post_save, sender=User)

def create_or_update_user_profile(sender, instance, created, **kwargs):

if created:

Profile.objects.create(user=instance)

instance.profile.save()

forms.py

class FormSignUp(UserCreationForm):

email = forms.CharField(max_length=254, required=True, widget=forms.EmailInput())

class Meta:

model = User

fields = ['username', 'email', 'password1', 'password2']

class FormProfile(forms.ModelForm):

class Meta:

model = Profile

fields = ['birthdate', 'gender', 'site_facebook', 'site_twitter', 'profile_picture']

FormSetProfile = inlineformset_factory(User, Profile, form=FormProfile)

view.py

class CreateUser(CreateView):

    form_class = FormSignUp

    template_name = 'signup.html'

    success_url = reverse_lazy('home')

    def get_context_data(self, **kwargs):

        data = super(CreateUser, self).get_context_data(**kwargs)

        if self.request.POST:

            data['profile'] = FormSetProfile(self.request.POST)

        else:

            data['profile'] = FormSetProfile()

        return data

    def form_valid(self, form):

        context = self.get_context_data()

        profile_formset = context['profile']

        with transaction.atomic():

            form.instance.created_by = self.request.user

            form.instance.updated_by = self.request.user

            self.object = form.save()

        if profile_formset.is_valid():

            profile_formset.instance = self.object

            profile_formset.save() # Linha onde está dando o erro

        return super(CreateUser, self).form_valid(form)

Thanks for your help

Luiz Guilherme

[Jani Tiainen]

Hi.

Using formset to handle profile is a bit incorrect solution.

See http://musings.tinbrain.net/blog/2015/jun/10/updating-two-models-single-post/ for proper solution.

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[Luiz Guilherme Schiefler de Arruda]

Hello,

I got your solution. Just one question, as I posted, I am using CBV. How can I do it using CBV?

Thanks,

Luiz

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