On Sunday, July 10, 2016 at 10:09:55 PM UTC-4, Michael Beller wrote:
>
> For n2, you could try only updating if n2 was not empty. This is not
> tested but something like ...
>
> Field('n2', 'integer', compute=lambda r: r.start_number if not r.n2 else
> None)
>
That won't work because (a) the current value of n2 will not be included in
r, and (b) even if it were, you would not want to set the value of n2 to
None.
Anthony
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