I see the code specifically treats going from None as deleted = ():
1417 else:
1418 -> if original is not None:
1419 deleted = [original]
1420 else:
1421 deleted = ()
1422 return cls([current], (), deleted)
So I guess the question is why and is that inconsistent with going to
None?
On Sep 23, 10:39 am, Kent <jkentbo...@gmail.com> wrote:
> I have two scalar columns in this example. (This is SQLAlchemy-0.6.4)
>
> ========= To NULL ==============
> print l.percentofsale1
> 100
>
> l.percentofsale1=None
>
> attributes.get_history(l,'percentofsale1')
> ([None], (), [Decimal('100')])
>
> ========= From NULL ==============
> print l.discount
> None
>
> l.discount=Decimal(100)
>
> attributes.get_history(l,'discount')
> ([Decimal('100')], (), ())
>
> I expected to be able to see the history moving from None to
> Decimal('100') like this:
> ([Decimal('100')], (), [None])
>
> Which would seem consistent with moving To NULL. Why is the
> history.deleted () instead of [None]?
>
> Thanks,
> Kent
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