As Oleg notes, your default argument call to byName is evaluated at class
creation time ie, before you've created the Sales Department record. In the same
way, if you had:
when = DateTimeCol(default=now())
the default would always be the value returned by now() at the time the class is
imported.
However, default can also be a callable. In the datetime example, changing it
to:
when = DateTimeCol(default=now)
will cause SQLObject to call now() separately for each insert (that needs the
default for this column).
So as long as the Sales department is created before you actually insert any
Employees, something like this should work to make that byName call lazy:
def get_sales_dept():
return Department.byName('SALES')
class Employee(SQLObject):
user_name = UnicodeCol(alternateID=True)
department = ForeignKey(default=get_sales_dept)
- Luke
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