allow CompressedTextProperty to be None

dound · Apr 11, 2011 · 9eebd42 · 9eebd42
1 parent 358d4f5
commit 9eebd42
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/__init__.py b/__init__.py
@@ -685,10 +685,15 @@ def __init__(self, level=6, *args, **kwargs):
     super(CompressedTextProperty, self).__init__(level, *args, **kwargs)
 
   def value_to_str(self, model_instance):
-    return self.__get__(model_instance, model_instance.__class__).encode('utf-8')
+    v = self.__get__(model_instance, model_instance.__class__)
+    if v is None:
+      return v
+    return v.encode('utf-8')
 
   @staticmethod
   def str_to_value(s):
+    if s is None:
+      return None
     return s.decode('utf-8')
 
 class DerivedDateProperty(db.DateProperty):