Django foreign key model is not saving reference

Question

I am having an issue on saving my model, my UserProfile reference on a foreign key to a Customer, and I have gotten sure that my form in sending the needed info and the customer object is being loaded, however when I save my model, this lost the reference to customer

My code is

models.py

from django.db import models
from customers.models import Customer
from django.contrib.auth.models import User, Group
from django.contrib.sites.models import Site
from anfitrion.models import ModelBase
from django.db.models.signals import post_save

class UserProfile(ModelBase):
    user = models.OneToOneField(User)
    customer = models.ForeignKey(Customer)
    address = models.CharField(max_length = 255)
    phone_home = models.CharField(max_length = 16)
    phone_office = models.CharField(max_length = 16)
    expiration = models.DateTimeField(null=True, blank=True)
    picture = models.ImageField(upload_to='profiles/%Y/%m/%d')
    observations = models.TextField(null=True, blank=True)
    status = models.BooleanField()

    def __str__(self):
        return "%s's profile" % self.user  

def create_user_profile(sender, instance, created, **kwargs):
    if created:
        profile, created = UserProfile.objects.get_or_create(user=instance)  

post_save.connect(create_user_profile, sender=User)

class SiteProfile(ModelBase):
    site = models.OneToOneField(Site)

    def __str__(self):
        return "%s's profile" % self.user  

def create_site_profile(sender, instance, created, **kwargs):
    if created:
        profile, created = SiteProfile.objects.get_or_create(site=instance)  

post_save.connect(create_site_profile, sender=Site)

function running the saveing

def users_save (request):
    #try:
        if request.is_ajax() and request.POST:
            user_id = request.POST['user_id']
            s = get_current_site(request)
            u = User (
                      username = request.POST['username'],
                      first_name = request.POST['first_name'],
                      last_name = request.POST['last_name'],
                      email = request.POST['email']
                      )
            u.set_password(request.POST['password'])
            c = None
            if int( request.POST['customer_id'] ) > 0: 
                c = Customer.objects.get(id=request.POST['customer_id'])
            up = UserProfile(
                      customer = c,
                      address = request.POST['address'],
                      phone_home = request.POST['phone_home'],
                      phone_office = request.POST['phone_office']
                      )
            up.user = u
            u.save()
            if int( request.POST['group_id'] ) > 0:
                g = Group.objects.get( id = request.POST['group_id'] )
                g.user_set.add(u)
            return HttpResponse(1, mimetype='application/json')

Answer 1

Here

up.user = u
u.save()

You are not saving the up anywhere.

So u.save() should be up.save()

u.save()
up.user = u
up.save()