Hi list!
I'm looking for an elegant way, to validate referenced objects. Let's
say, I have a table 'persons' with the attributes 'father', 'mother',
'age', and I want to validate for example, that the parents are actually
older then their children. So I have code like
class Person(object):
__storm_table__ = 'persons'
id = Int(primary=True)
father_id = Int()
father = Reference(id, father_id)
...
Adding a validator to the father_id attribute would have to look up the
object by the id first, and then process the validation, even if the
reference already knows the referenced object. This extra lookup would
be inefficient in my eyes. On the other side, a Reference doesn't seem
to have a validation mechanism. Would it be wise, to somehow subclass
Reference, or do I better stick with the lookup of the id? Are there any
side effects I should be aware of?
Regards,
Michael
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