import sqlalchemy as sa
from sqlalchemy import orm
-from user import *
-from expenditure import *
-from split import *
-from subitem import *
-from transfer import *
+from bluechips.model.user import User
+from bluechips.model.expenditure import Expenditure
+from bluechips.model.split import Split
+from bluechips.model.subitem import Subitem
+from bluechips.model.transfer import Transfer
from bluechips.model import meta
from bluechips.model import types
### DB/Class Mapping ###
-orm.mapper(User, users)
+orm.mapper(User, users,
+ properties={
+ 'expenditures': orm.relation(Expenditure,
+ backref='spender',
+ lazy=False)
+})
orm.mapper(Expenditure, expenditures, order_by=expenditures.c.date.desc(),
properties={
- 'spender': orm.relation(User,
- backref='expenditures',
- lazy=False)
+ 'splits': orm.relation(Split, backref='expenditure',
+ cascade='all, delete'),
+ 'subitems': orm.relation(Subitem, backref='expenditure',
+ cascade='all, delete')
})
orm.mapper(Split, splits, properties={
- 'expenditure': orm.relation(Expenditure, backref='splits'),
'user': orm.relation(User)
})
orm.mapper(Subitem, subitems, properties={
- 'expenditure': orm.relation(Expenditure, backref='subitems'),
'user': orm.relation(User)
})