Index: django/db/models/fields/subclassing.py
===================================================================
--- django/db/models/fields/subclassing.py	(révision 6718)
+++ django/db/models/fields/subclassing.py	(copie de travail)
@@ -28,10 +28,10 @@
     def __get__(self, obj, type=None):
         if obj is None:
             raise AttributeError('Can only be accessed via an instance.')
-        return self.value
+        return obj.__dict__[self.field.name]        
 
     def __set__(self, obj, value):
-        self.value = self.field.to_python(value)
+        obj.__dict__[self.field.name] = self.field.to_python(value)
 
 def make_contrib(func=None):
     """
Index: tests/modeltests/field_subclassing/models.py
===================================================================
--- tests/modeltests/field_subclassing/models.py	(révision 6718)
+++ tests/modeltests/field_subclassing/models.py	(copie de travail)
@@ -103,4 +103,14 @@
 >>> obj = list(serializers.deserialize("json", stream))[0]
 >>> obj.object == m
 True
+
+# Test retrieving custom field data
+>>> m.delete()
+>>> m1 = MyModel(name="1", data=Small(1, 2))
+>>> m1.save()
+>>> m2 = MyModel(name="2", data=Small(2, 3))
+>>> m2.save()
+>>> for m in MyModel.objects.all(): print unicode(m.data)
+12
+23
 """}