I've two model. I would like to save data from ForeignKey model. I'm
created a modelform and save with my main foreignkey model. But I got this
error ValueError at /c/customer/1/ Cannot assign "'1'":
"BillingData.customer" must be a "CustomerData" instance.
I created Django model form and hocked up with view.
models.py file
class CustomerData(models.Model):
customer_name = models.CharField(max_length=100)
customer_no = models.CharField(max_length=100, default='', blank=True)
mobile_number = models.IntegerField()
alternative_phone = models.IntegerField(null=True, blank=True)
union_name = models.ForeignKey(UnionName, on_delete=models.SET_NULL,
null=True)
word_name = models.ForeignKey(UnionWordName, on_delete=models.SET_NULL,
null=True)
full_address = models.CharField(max_length=200, null=True, blank=True)
create_date = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
def __str__(self):
return '%s, Mobile: %s' % (self.customer_name, self.mobile_number)
def get_absolute_url(self):
return reverse('customer_data', kwargs={'pk': self.pk})
class BillingData(models.Model):
bill_no = models.CharField(max_length=100, default='', blank=True)
customer = models.ForeignKey(CustomerData, on_delete=models.CASCADE)
sales_person = models.ForeignKey(settings.AUTH_USER_MODEL,
on_delete=models.SET_NULL, null=True)
customer_money = models.IntegerField()
create_date = models.DateTimeField(auto_now_add=True)
updated = models.DateTimeField(auto_now=True)
def __str__(self):
return '%s %s' % (self.customer.customer_name, self.create_date.date())
def get_absolute_url(self):
return reverse('customers.views.BillingPage', kwargs={'pk': self.pk})
forms.py file
class BillCreateForms(forms.ModelForm):
bill_no = forms.CharField(max_length=100)
customer = forms.ChoiceField(choices=[(x.id, x.customer_name) for x in
CustomerData.objects.all()])
customer_money = forms.IntegerField()
def save(self, commit=True):
instance = super(BillCreateForms, self).save(commit=False)
customer_pk = self.cleaned_data['customer']
instance.customer_id = CustomerData.objects.get(pk=customer_pk).pk
instance.save(commit)
return instance
class Meta:
model = BillingData
fields = ('bill_no', 'customer', 'customer_money',)
views.py file
class CustomerDataView(FormMixin, generic.DetailView):
model = CustomerData
form_class = BillCreateForms
template_name = "customers/customerdata_detail.html"
print(form_class)
success_url = '/c/'
def post(self, request, *args, **kwargs):
if not request.user.is_authenticated:
return HttpResponseForbidden()
form = self.get_form()
if form.is_valid():
return self.form_valid(form)
else:
return self.form_invalid(form)
I expect data save with foreignkey relation data. But doesn't save here.
models.py file https://paste.ubuntu.com/p/8RKDGwjhgh/
<https://paste.ubuntu.com/p/8RKDGwjhgh/?fbclid=IwAR0gO5OflCkVDFWAs9jXc3yPhNmCMn_4ZEGcr-nvL9QAZxFsgNhRG7E4YlA>
forms.py file https://paste.ubuntu.com/p/gD4B5nFWJP/
<https://paste.ubuntu.com/p/gD4B5nFWJP/?fbclid=IwAR2x0m3NoyLIYDeSug_xtZxPG4ZGItfp3ICzSxMozwSLOxnrt1TBVce-A0I>
views.py file https://paste.ubuntu.com/p/njyfwNztY9/
<https://paste.ubuntu.com/p/njyfwNztY9/?fbclid=IwAR2ZDD8Xgit0VPxm4W4qvaPUFyQsSdeNR77oqQSdWTRw9c9b5PdMU8JTKvI>
this is full traceback paste.ubuntu.com/p/Z92rVxJpnJ
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