Ticket #16563: ticket_16563.diff

django/utils/functional.py

@@ -1 +1 @@
 import copy
 import operator
+import pickle
 from functools import wraps, update_wrapper
 
 
@@ -261 +262 @@
         else:
             return copy.deepcopy(self._wrapped, memo)
 
+    def __getstate__(self):
+        # We can't pickle the callable setupfunc, so avoid it.
+        if self._wrapped is empty:
+            self._setup()
+        return {'_wrapped': self._wrapped}
+
     # Need to pretend to be the wrapped class, for the sake of objects that care
     # about this (especially in equality tests)
     __class__ = property(new_method_proxy(operator.attrgetter("__class__")))

tests/regressiontests/utils/simplelazyobject.py

@@ -1 +1 @@
 import copy
+import pickle
 
 from django.utils.unittest import TestCase
 from django.utils.functional import SimpleLazyObject, empty
@@ -96 +97 @@
         self.assertTrue(x)
         x = SimpleLazyObject(lambda: 0)
         self.assertFalse(x)
+
+    def test_pickle(self):
+        # See ticket #16563
+        from django.contrib.auth.models import AnonymousUser
+        x = SimpleLazyObject(lambda: AnonymousUser())
+        pickled = pickle.dumps(x)
+        unpickled = pickle.loads(pickled)
+        self.assertTrue(unpickled.is_anonymous())
+        self.assertEqual(x, unpickled)