exposing is_null

repocket/__init__.py

@@ -5,11 +5,13 @@
 from repocket.connections import configure
 from repocket.model import ActiveRecord
 from repocket.manager import ActiveRecordManager
+from repocket.util import is_null
 
 __all__ = [
     'attributes',
     'configure',
     'ActiveRecord',
     'ActiveRecordManager',
     'MODELS',
+    'is_null',
 ]

repocket/attributes.py

@@ -11,7 +11,7 @@
 from decimal import Decimal as PythonsDecimal
 
 from repocket._cache import MODELS
-
+from repocket.util import is_null
 
 logger = logging.getLogger("repocket.attributes")
 
@@ -20,16 +20,6 @@ def get_current_time(field):
     return datetime.utcnow()
 
 
-def is_null(value):
-    if not value:
-        return True
-
-    if isinstance(value, basestring) and value.lower() in ['none', json.dumps(None)]:
-        return True
-
-    return False
-
-
 class Attribute(object):
     """Repocket treats its models and attributes as fully serializable.
     Every attribute contains a ``to_python`` method that knows how to

repocket/util.py

@@ -0,0 +1,8 @@
+def is_null(value):
+    if value is None:
+        return True
+
+    if isinstance(value, basestring) and value.lower() in ['null', 'none']:
+        return True
+
+    return False