ModelForm with OneToOneField in Django - django

Question

I have two models in Django that are related with a OneToOneField (PrinterProfile and PrinterAdress).
I am trying to do a form with PrinterProfileForm, but for some reason it does NOT pass the PrinterAddress fields into the form (it's not rendered by Django "magic" in the template).
What should I do so that my PrinterProfileForm include as well the fields from PrinterAddress (its related OneToOneField)?
Thanks a lot
class PrinterProfile(TimeStampedModel):
user = models.OneToOneField(User)
phone_number = models.CharField(max_length=120, null=False, blank=False)
additional_notes = models.TextField()
delivery = models.BooleanField(default=False)
pickup = models.BooleanField(default=True)
# The main address of the profile, it will be where are located all the printers.
class PrinterAddress(TimeStampedModel):
printer_profile = models.OneToOneField(PrinterProfile)
formatted_address = models.CharField(max_length=200, null=True)
latitude = models.DecimalField(max_digits=25, decimal_places=20) # NEED TO CHECK HERE THE PRECISION NEEDED.
longitude = models.DecimalField(max_digits=25, decimal_places=20) # NEED TO CHECK HERE THE PRECISION NEEDED.
point = models.PointField(srid=4326)
def __unicode__(self, ):
return self.user.username
class PrinterProfileForm(forms.ModelForm):
class Meta:
model = PrinterProfile
exclude = ['user']

Answer 1

You have to create second form for PrinterAddress and handle both forms in you view:
if all((profile_form.is_valid(), address_form.is_valid())):
profile = profile_form.save()
address = address_form.save(commit=False)
address.printer_profile = profile
address.save()
Of course in the template you need to show both forms under one <form> tag :-)
<form action="" method="post">
{% csrf_token %}
{{ profile_form }}
{{ address_form }}
</form>

Answer 2

Complementing the accepted answer:
If you have custom clean methods, you need to add a try/except case. For the example presented if address had a clean() method to validate something you needed to change it to:
def clean(self):
try:
printer_profile = self.printer_profile
except ObjectDoesNotExist:
pass
else:
...code to validate address...