added a 'My Share' column to lists of expenditures

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

diff --git a/bluechips/model/expenditure.py b/bluechips/model/expenditure.py
index 8d3bbbc67e74e9c8155df70bcf694e5788a629d4..296ecf04929aa2c3c66790d3f5a86a76cdcd88b9 100644 (file)
--- a/bluechips/model/expenditure.py
+++ b/bluechips/model/expenditure.py
@@ -84,6 +84,23 @@ class Expenditure(object):
         
         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']