emphasize transactions that the logged-in user is part of, deemphasize others

[bluechips.git] / bluechips / model / expenditure.py

diff --git a/bluechips/model/expenditure.py b/bluechips/model/expenditure.py
index 591bbbd17169764d50fc55ef0fcbe5de9e19ec4a..dda06c1e0a9c7bf837e3668eef7835dc5cf2ca70 100644 (file)
--- a/bluechips/model/expenditure.py
+++ b/bluechips/model/expenditure.py
@@ -78,12 +78,19 @@ class Expenditure(object):
                 winner = random.choice(amounts_dict.keys())
                 amounts_dict[winner] += Currency(1)
         elif difference < 0:
-            for i in xrange(difference):
+            for i in xrange(-difference):
                 winner = random.choice(amounts_dict.keys())
                 amounts_dict[winner] -= Currency(1)
         
         for user, share in amounts_dict.iteritems():
             s = Split(self, user, share)
-            meta.Session.save(s)
+            meta.Session.add(s)
+
+    def involves(self, user):
+        "Returns True if ``user`` is involved in this expenditure."
+        return (meta.Session.query(Split.id).\
+                filter(Split.expenditure == self).\
+                filter(Split.user == user).\
+                filter(Split.share != 0).first() is not None)
 
 __all__ = ['Expenditure']