X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=bluechips%2Fmodel%2Fexpenditure.py;h=296ecf04929aa2c3c66790d3f5a86a76cdcd88b9;hb=ed8863d32a4d626a02bf1c5c930253003068ea3f;hp=591bbbd17169764d50fc55ef0fcbe5de9e19ec4a;hpb=838d7c184e6d4caa20ba1f2e7893493c6308ce7c;p=bluechips.git

diff --git a/bluechips/model/expenditure.py b/bluechips/model/expenditure.py
index 591bbbd..296ecf0 100644
--- a/bluechips/model/expenditure.py
+++ b/bluechips/model/expenditure.py
@@ -78,12 +78,29 @@ 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)
+
+    def share(self, user):
+        "Return the share corresponding to ``user``."
+        share = meta.Session.query(Split.share).\
+                filter(Split.expenditure == self).\
+                filter(Split.user == user).scalar()
+        if share is None:
+            return Currency(0)
+        else:
+            return share
 
 __all__ = ['Expenditure']