Ticket #13328: patch_13328.diff

django/db/models/fields/__init__.py

@@ -592 +592 @@
             kwargs['blank'] = True
         Field.__init__(self, verbose_name, name, **kwargs)
 
+    def __getstate__(self):
+        if type(datetime.datetime.now) == self.default:
+            obj_dict = self.__dict__.copy()
+            obj_dict['default'] = None
+            return obj_dict
+
     def get_internal_type(self):
         return "DateField"