form not saving into user model Django - django

Question

I'm currently processing a payment thing for an online subscription service and in order to get the users info to send this stuff, I have a payment form.
But, for some reason the payment form is not saving to the users account. Everything else actually processes and the only error I can trigger is a 'NOT NULL constraint failed: memberships_usermembership.user_id'
Here's what I have in my view -
#login_required()
def payments(request):
user_membership = get_user_membership(request)
selected_membership = get_selected_membership(request)
form = SubscriptionForm()
if request.method == "POST":
form_data = {
'full_name': request.POST['full_name'],
'email': request.POST['email'],
'phone_number': request.POST['phone_number'],
'country': request.POST['country'],
'postcode': request.POST['postcode'],
'town_or_city': request.POST['town_or_city'],
'street_address1': request.POST['street_address1'],
'street_address2': request.POST['street_address2'],
'county': request.POST['county'],
}
token = request.POST['stripeToken']
form = SubscriptionForm(form_data)
if form.is_valid():
customer = stripe.Customer.retrieve(
user_membership.stripe_customer_id)
customer.source = token
customer.save()
subscription = stripe.Subscription.create(
customer=user_membership.stripe_customer_id,
items=[
{"plan": selected_membership.stripe_plan_id},
]
)
user_membership = get_user_membership(request)
selected_membership = get_selected_membership(request)
user_membership.membership = selected_membership
user_membership.save()
form.save(commit=True)
subscription_id = subscription.id
sub, created = Subscription.objects.get_or_create(
user_membership=user_membership)
sub.stripe_subscription_id = subscription_id
sub.active = True
sub.save()
try:
del request.session['selected_membership_type']
except BaseException:
pass
return render(request, 'memberships/update-success.html')
else:
return redirect(reverse('membership_list'))
context = {
'selected_membership': selected_membership,
'form': form,
}
return render(request, 'memberships/payment.html', context)
When the form.save() is the line above the return(render) line, it will process everything as normal, and the form information just wont save into the DB.
It flashes the NOT NULL error when the form.save() line is where it in in the code above.
Any ideas how to get this working?
Thanks!
EDIT: Here's a link to the entire error in Django - http://dpaste.com/140VD8M
& a screenshot of it too!
Here's my models -
class Membership(models.Model):
membership_type = models.CharField(
choices=MEMBERSHIP_CHOICES,
default='Free',
max_length=30)
price = models.IntegerField(default=15)
description = models.TextField(default="DESCRIPTION")
image_url = models.URLField(max_length=1024, null=True, blank=True)
image = models.ImageField(null=True, blank=True)
stripe_plan_id = models.CharField(max_length=40)
def __str__(self):
return self.membership_type
class UserMembership(models.Model):
user = models.OneToOneField(
settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
full_name = models.CharField(max_length=50, null=True, blank=True)
email = models.EmailField(max_length=254, null=True, blank=True)
phone_number = models.CharField(max_length=20, null=True, blank=True)
country = CountryField(blank_label='Country', default="Ireland")
postcode = models.CharField(max_length=20, null=True, blank=True)
town_or_city = models.CharField(max_length=40, null=True, blank=True)
street_address1 = models.CharField(max_length=80, null=True, blank=True)
street_address2 = models.CharField(max_length=80, null=True, blank=True)
county = models.CharField(max_length=80, null=True, blank=True)
stripe_customer_id = models.CharField(max_length=40)
membership = models.ForeignKey(
Membership, on_delete=models.SET_NULL, null=True)
def __str__(self):
return self.user.username
def post_save_usermembership_create(
sender, instance, created, *args, **kwargs):
user_membership, created = UserMembership.objects.get_or_create(
user=instance)
if user_membership.stripe_customer_id is None or user_membership.stripe_customer_id == '':
new_customer_id = stripe.Customer.create(email=instance.email)
free_membership = Membership.objects.get(membership_type='Free')
user_membership.stripe_customer_id = new_customer_id['id']
user_membership.membership = free_membership
user_membership.save()
post_save.connect(post_save_usermembership_create,
sender=settings.AUTH_USER_MODEL)
class Subscription(models.Model):
user_membership = models.ForeignKey(
UserMembership, on_delete=models.CASCADE)
stripe_subscription_id = models.CharField(max_length=40)
active = models.BooleanField(default=False)
def __str__(self):
return self.user_membership.user.username
& here's my user membership def -
#login_required()
def get_user_membership(request):
user_membership_qs = UserMembership.objects.filter(user=request.user)
if user_membership_qs.exists():
return user_membership_qs.first()
return None

Answer 1

Instead of collecting all the form fields individually, you should be able to just pass the request.POST to the form like so:
form_data = request.POST
token = request.POST['stripeToken']
form = SubscriptionForm(form_data)
Other than that, without seeing the exact error message, there isn't much more to tell. If you update your question I will update my answer.
EDIT:
Without seeing your model and what get_user_membership() returns, it looks like you are missing a User object in a UserMembership class (but I can't tell without seeing more):
user_membership.user = request.user
Or something like that.