X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;ds=sidebyside;f=bluechips%2Fmodel%2Ftypes.py;h=d4454813bd7e5463fc513518359b755b53abd25f;hb=ac41cefa3569ceca9ebee894d2c333360b4158fc;hp=ac7a14b4e920f698469f582140fe054ec6d9175a;hpb=36b449746d1be67a7cbcbd4d4d90b342fa1770cd;p=bluechips.git

diff --git a/bluechips/model/types.py b/bluechips/model/types.py
index ac7a14b..d445481 100644
--- a/bluechips/model/types.py
+++ b/bluechips/model/types.py
@@ -14,7 +14,9 @@ class Currency(object):
     __metaclass__ = SmartSubclass(int)
     __old_values__ = WeakValueDictionary()
     def __new__(cls, value):
-        if isinstance(value, str):
+        if value is None:
+            value = 0
+        elif isinstance(value, str):
             value = int(float(value) * 100)
         else:
             value = int(value)
@@ -97,3 +99,4 @@ class DBCurrency(sa.types.TypeDecorator):
     
     def convert_result_value(self, value, engine):
         return Currency(value)
+    process_result_value = convert_result_value