fixed http://github.com/iamteem/redisco/issues/#issue/2

redisco/models/attributes.py

@@ -339,17 +339,20 @@ def __set__(self, instance, value):
         if not isinstance(value, self.value_type()) and \
                 value is not None:
             raise TypeError
+        # remove the cached value from the instance
+        if hasattr(instance, '_' + self.name):
+            delattr(instance, '_' + self.name)
         setattr(instance, self.attname, value.id)
 
     def __get__(self, instance, owner):
         try:
-            if not hasattr(self, '_' + self.name):
+            if not hasattr(instance, '_' + self.name):
                 o = self.value_type().objects.get_by_id(
                                     getattr(instance, self.attname))
-                setattr(self, '_' + self.name, o)
-            return getattr(self, '_' + self.name)
+                setattr(instance, '_' + self.name, o)
+            return getattr(instance, '_' + self.name)
         except AttributeError:
-            setattr(self, '_' + self.name, self.default)
+            setattr(instance, '_' + self.name, self.default)
             return self.default
 
     def value_type(self):

setup.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 import os
 
-version = '0.1.0'
+version = '0.1.1'
 
 try:
     from setuptools import setup

tests/models.py

@@ -769,7 +769,10 @@ class Character(models.Model):
         Character.objects.create(n=34, m='c', word=word)
         Character.objects.create(n=34, m='d')
         for char in Character.objects.all():
-            self.assertEqual(word, char.word)
+            if char.m != 'd':
+                self.assertEqual(word, char.word)
+            else:
+                self.assertEqual(None, char.word)
         a, b, c, d = list(Character.objects.all())
         self.assertTrue(a in word.character_set)
         self.assertTrue(b in word.character_set)