The problem comes in at the generation of the str(data.id) to make the unique ID as I'm joining it and the date for record purposes.

#form to return to db

if request.method == 'POST':
    form = OrderForm(request.POST)
    if form.is_valid():
        # store all the billing info
        data = Order()
        data.user = current_user
        data.first_name = form.cleaned_data['first_name']
        data.last_name = form.cleaned_data['last_name']
        data.phone = form.cleaned_data['phone']
        data.email = form.cleaned_data['email']
        data.address_line_1 = form.cleaned_data['address_line_1']
        data.address_line_2 = form.cleaned_data['address_line_2']
        data.country = form.cleaned_data['country']
        data.street = form.cleaned_data['street']
        data.location = form.cleaned_data['location']
        data.county = form.cleaned_data['county']
        data.city = form.cleaned_data['city']
        data.order_note = form.cleaned_data['order_note']
        data.order_total = grand_total
        data.tax = tax
        data.ip = request.META.get('REMOTE_ADDR')
        #data.save()
        # generate order number
        yr = int(datetime.date.today().strftime('%Y'))
        dt = int(datetime.date.today().strftime('%d'))
        mt = int(datetime.date.today().strftime('%m'))
        d = datetime.date(yr, mt, dt)
        current_date = d.strftime("%Y%m%d")
        order_number = current_date + str(data.id)
        data.order_number = order_number
        data.save()

        order=Order.objects.get(user=current_user, is_ordered=False, order_number=order_number)
        context={
            'order':order,
            'cart_items':cart_items,
            'total':total,
            'tax':tax,
            'grand_total':grand_total,
        }
        return render(request,'orders/payments.html', context)
else:
    return redirect('checkout')

#to pull data id