Re: User has no dcf_profile : RelatedObjectDoesNotExist

Just to share with you the solution that worked, I have created a proxy model of the User model and used the code that abraham provided me :

Updated models.py

class DcfUser(User):      class Meta:          proxy = True      def allow_add_item(self):          if self.item_set.count() > settings.DCF_ITEM_PER_USER_LIMIT:              return False          else:              return True  

Updated views.py

@method_decorator(login_required)  def dispatch(self, *args, **kwargs):      user = self.request.user      my_user = DcfUser.objects.get(username=user)      if not my_user.allow_add_item():          messages.error(self.request, _('You have reached the limit!'))          return redirect(reverse('my'))  

Thank you

On Friday, June 16, 2017 at 1:06:33 PM UTC+2, Nabil BOUDERBALA wrote:

After extending an existing user model, I get RelatedObjectDoesNotExist exception with a value User has no dcf_profile. I seems that dcf_profile isn't created automatically for each user.

Please take a look at my model, view and form below and tell me how can I correct my views file?

My models.py :

class CustomUser(models.Model):      auth_user_ptr = models.OneToOneField(                                  User,                                  parent_link=True,                                  related_name='dcf_profile',                                  primary_key=True                              )      phone = models.CharField(_('phone'), max_length=30, null=True, blank=True)      receive_news = models.BooleanField(_('receive news'), default=True, db_index=True)      class Meta:          app_label = 'dcf'      def allow_add_item(self):          if self.item_set.count() > settings.DCF_ITEM_PER_USER_LIMIT:              return False          else:              return True    class Item(models.Model):      slug = models.SlugField(blank=True, null=True, max_length=100)      user = models.ForeignKey(User, on_delete=models.CASCADE)      group = models.ForeignKey(Group, verbose_name=_('group'))      title = models.CharField(_('title'), max_length=100)      description = models.TextField(_('description'))      price = models.DecimalField(_('price'), max_digits=10, decimal_places=2)      phone = models.CharField(_('phone'), max_length=30)      is_active = models.BooleanField(_('display'), default=True, db_index=True)      updated = models.DateTimeField(_('updated'), auto_now=True, db_index=True)      posted = models.DateTimeField(_('posted'), auto_now_add=True)      def __unicode__(self):          return self.title      class Meta:          verbose_name = _('item')          verbose_name_plural = _('items')          ordering = ('-updated', )      def get_absolute_url(self):          return reverse('item', kwargs={              'pk': self.pk,              'slug': self.slug          })      def get_title(self):          return u'%s' % self.title      def get_description(self):          return u'%s' % self.description[:155]      def get_keywords(self):         # TODO need more optimal keywords selection          return ",".join(set(self.description.split()))      def get_related(self):         # TODO Need more complicated related select          return Item.objects.exclude(pk=self.pk)[:settings.DCF_RELATED_LIMIT]      def save(self, *args, **kwargs):          if self.slug is None:              self.slug = slugify(unidecode(self.title))          super(Item, self).save(*args, **kwargs)

My views.py :

class ItemCreateView(FormsetMixin, CreateView):  is_update_view = False  model = Item  form_class = ItemCreateEditForm  formset_class = inlineformset_factory(Item, Image, extra=3, fields=('file', ))    @method_decorator(login_required)  def dispatch(self, *args, **kwargs):      if not self.request.user.dcf_profile.allow_add_item():          messages.error(self.request, _('You have reached the limit!'))          return redirect(reverse('my'))      return super(ItemCreateView, self).dispatch(*args, **kwargs)  def form_valid(self, form, formset):      form.instance.user = self.request.user      form.save()      return super(ItemCreateView, self).form_valid(form, formset)

My forms.py

class ItemCreateEditForm(forms.ModelForm):  class Meta:      model = Item      fields = ('group', 'title', 'description', 'price', 'phone', 'is_active')

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