Source code:
from lino.apps.pizzeria.pizzeria import Pizzeria, populate, Order
app = Pizzeria()
dbc = app.createContext()
populate(dbc)
orders = dbc.query(Order,"customer totalPrice")
for o in orders:
print "%s must pay %d EUR" % (o.customer.name, o.totalPrice)
del app, dbc, orders, o
Output:
Henri must pay 12 EUR James must pay 53 EUR
See also: lino:src/lino/apps/pizzeria/pizzeria.py