I had similar issues, I found this helpful: https://groups.google.com/g/django-users/c/PcSDKZhPVmc
On Sat, Feb 27, 2021 at 9:19 AM Ryan Nowakowski <tuba...@fattuba.com> wrote: > I think choices is causing the problem. Try limit_choices_to instead: > > > https://docs.djangoproject.com/en/dev/ref/models/fields/#django.db.models.ForeignKey.limit_choices_to > > On February 27, 2021 8:06:26 AM CST, "sebasti...@gmail.com" < > sebastian.ju...@gmail.com> wrote: >> >> Hello, >> >> I have a CBV with Createview. Now i have a Foreign Key from Box to Tabs >> model. When i submit request then i get error:* Cannot assign "1": >> "Box.tabs_link" must be a "Tabs" instance*. This happens on form.is_valid >> >> I understand this error but i don't know how can i fix this. >> >> *Models.py*: >> class Box(models.Model): >> id = models.AutoField(primary_key=True) >> name = models.CharField(max_length=200, default="", blank=False, >> null=False) #Überschrift der Box >> tabs_link = models.ForeignKey(Tabs, on_delete=models.CASCADE, >> null=False,blank=False,choices=[ >> (c.id, c.name) for c in >> Tabs.objects.all()] >> ) >> >> column = >> models.PositiveIntegerField(choices=column_choices,blank=False, >> null=False,default=0) #linke oder rechte Seite >> position = models.PositiveIntegerField(default=1,blank=False, >> null=False) #position auf der linken/rechten Seite >> modul = models.PositiveIntegerField(choices=Modul_Auswahl, >> default=0) >> >> class Meta: >> ordering = ["position","column"] >> def __str__(self): >> return self.name >> >> *Views.py:* >> class BoxCreateView(CreateView): >> model = Box >> template_name = 'marketing/boxcreate.html' >> form_class = Boxform >> success_url = reverse_lazy('boxlist') >> >> def post(self, request, *args, **kwargs): >> formbox = Boxform(self.request.POST) >> if (*formbox.is_valid()*): >> pass >> >> *Forms.py* >> class Boxform(forms.ModelForm): >> class Meta: >> model = Box >> exclude = ('',) >> >> labels = { >> 'tabs_link': 'Tabulator', >> 'column': 'Spalte', >> } >> widgets = { >> 'name': textinputfeld, >> 'position': integerfeld, >> 'column': integerfeld, >> 'modul': selectfield, >> 'tabs_link': selectfield, >> } >> >> Regards >> >> >> -- > You received this message because you are subscribed to the Google Groups > "Django users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to django-users+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/C48208D2-7C9F-4F99-B664-20269F331FD2%40fattuba.com > <https://groups.google.com/d/msgid/django-users/C48208D2-7C9F-4F99-B664-20269F331FD2%40fattuba.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to django-users+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAAdSEeZyYYogUjz20ssChfx-fZUuDpUNZ4P-NPjn2SSE%2B8PkjQ%40mail.gmail.com.
