Refactor secret / local settings handling

uncloud_django_based/uncloud/uncloud_pay/models.py

@@ -4,7 +4,7 @@ from django.contrib.auth import get_user_model
 from django.core.validators import MinValueValidator
 from django.utils.translation import gettext_lazy as _
 from django.utils import timezone
-from django.core.exceptions import ObjectDoesNotExist
+from django.core.exceptions import ObjectDoesNotExist, ValidationError
 
 import uuid
 import logging
@@ -811,7 +811,7 @@ class Order(models.Model):
 
     # TODO: enforce ending_date - starting_date to be larger than recurring_period.
     creation_date = models.DateTimeField(auto_now_add=True)
-    starting_date = models.DateTimeField()
+    starting_date = models.DateTimeField(default=timezone.now)
     ending_date = models.DateTimeField(blank=True,
                                        null=True)
 
@@ -918,6 +918,17 @@ class Product(UncloudModel):
         # _state.adding is switched to false after super(...) call.
         being_created = self._state.adding
 
+        # First time saving - create an order
+        if not self.order:
+            billing_address = BillingAddress.get_preferred_address_for(self.owner)
+
+            if not billing_address:
+                raise ValidationError("Cannot create order without a billing address")
+
+            self.order = Order(owner=self.owner,
+                               billing_address=billing_address)
+
+
         super(Product, self).save(*args, **kwargs)
 
         # Make sure we only create records on creation.