see the manual about database callbacks.

http://web2py.com/books/default/chapter/29/06/the-database-abstraction-layer#callbacks-on-record-insert--delete-and-update

On Tuesday, October 20, 2015 at 11:49:02 AM UTC+2, Gael Princivalle wrote:
>
> Hello all.
>
> I would like to run a function everytime there is a modification in auth.
>
> something like:
> auth.settings.onchange = lambda: myfunction()
>
> Or only if a specific field change:
> auth.settings.myfield.onchange = lambda: myfunction()
>
> Is it possible?
>
> I need it for changing a field value in another db.
>
> Thanks, regards.
>
>

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