Hi Steve,
Could you let some other value represent no car? (e.g., _.None?).
untested...
WITH CompanyCars.getCar(self.car_id) or NOT_FOUND COMPUTE
car=RESULT,
car_registration=registration
OTHERWISE LET
car=_.None
car_registration="no car"
WHEN OBJECT CHANGED CALL
HAS_CHANGED('car_id') and
(self.car_id and CompanyCars.getItem(self.car_id).decommission(),
ORIGINAL['car_id'] and (OLD['car'] and OLD['car'].commission()))
SAVING car
Would that work?
-steve
>>>>> "SA" == Steve Alexander <[EMAIL PROTECTED]> writes:
SA> In SkinScript such as
SA> WHEN eventspec CALL expression SAVING mementolist
SA> if any of the mementos in mementolist are not found, the
SA> script raises a KeyError.
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