From ce091c34c68b6eafe70149d08b4a10c225aa6d7b Mon Sep 17 00:00:00 2001
From: endeav <elena.cimpoi@optimdata.eu>
Date: Fri, 19 Feb 2016 15:27:50 +0100
Subject: [PATCH] Use pk instead of id

---
 adminsortable/models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/adminsortable/models.py b/adminsortable/models.py
index 9157f62..0e2c965 100644
--- a/adminsortable/models.py
+++ b/adminsortable/models.py
@@ -87,7 +87,7 @@ class SortableMixin(models.Model):
             'typecast to an integer.'
 
     def save(self, *args, **kwargs):
-        if not self.id:
+        if not self.pk:
             try:
                 current_max = self.__class__.objects.aggregate(
                     models.Max(self.order_field_name))[self.order_field_name + '__max'] or 0