Two Django models with foreign keys in one view - django

Question

I'm starting with Django. I have 3 models, a parent class "Cliente" and two child classes, "Persona" and "Empresa".
models.py
class Cliente(models.Model):
idcliente = models.AutoField(unique=True, primary_key=True)
direccion = models.CharField(max_length=45L, blank=True)
telefono = models.CharField(max_length=45L, blank=True)
email = models.CharField(max_length=45L, blank=True)
def __unicode__(self):
return u'Id: %s' % (self.idcliente)
class Meta:
db_table = 'cliente'
class Empresa(models.Model):
idcliente = models.ForeignKey('Cliente', db_column='idcliente', primary_key=True)
cuit = models.CharField(max_length=45L)
nombre = models.CharField(max_length=60L)
numero_ingresos_brutos = models.CharField(max_length=45L, blank=True)
razon_social = models.CharField(max_length=45L, blank=True)
def __unicode__(self):
return u'CUIT: %s - Nombre: %s' % (self.cuit, self.nombre)
class Meta:
db_table = 'empresa'
class Persona(models.Model):
idcliente = models.ForeignKey('Cliente', db_column='idcliente', primary_key=True)
representante_de = models.ForeignKey('Empresa', null=True, db_column='representante_de', blank=True, related_name='representa_a')
nombre = models.CharField(max_length=45L)
apellido = models.CharField(max_length=45L)
def __unicode__(self):
return u'Id: %s - Nombre completo: %s %s' % (self.idcliente, self.nombre, self.apellido)
class Meta:
db_table = 'persona'
I want to manage a class and its parent in the same view. I want to add, edit and delete "Cliente" and "Persona"/"Cliente" in the same form. Can you help me?

Answer 1

There is a good example in the Documentation Here.
I wrote this based on the documentation, so it is untested.
def manage_books(request, client_id):
client = Cliente.objects.get(pk=client_id)
EmpresaInlineFormSet = inlineformset_factory(Cliente, Empresa)
if request.method == "POST":
formset = EmpresaInlineFormSet(request.POST, request.FILES, instance=author)
if formset.is_valid():
formset.save()
# Do something. Should generally end with a redirect. For example:
return HttpResponseRedirect(client.get_absolute_url())
else:
formset = EmpresaInlineFormSet(instance=client)
return render_to_response("manage_empresa.html", {
"formset": formset,
})