Thank you, I'll probably do the math in my app, because I'd like to be able to perform a search on the result (impossible with virtual fields, am I right?).
However, I think the text in the book is misleading : "[...]if a value for the field is not provided, web2py tries to compute from the other field values using the compute function." Reading this, I understand that: If a value is provided, then the compute attribute is ignored. On 1 sep, 20:36, pbreit <pbreitenb...@gmail.com> wrote: > Computed fields can't be edited because they are computed. > > Maybe just set a default: > db.article.price_with_taxes.default = lambda r: r.price*(1+r.taxes)/100) > > I would typically not advise creating a field in the database that is simply > a computation of another field. I would probably use a Virtual Field [1] or > just do the math in my application. > > [1]http://web2py.com/book/default/chapter/06#Virtual-Fields
