Make sure Field(...,default=None, update=None) On Jan 14, 9:47 am, Alexandre Andrade <[email protected]> wrote: > db.order_detail.total.compute=lambda r: r['qtd']*r['price'] > > don't work on updates > > 2010/1/14 mdipierro <[email protected]> > > > > > with 1.74.5 and later you only need > > > db.order_detail.total.compute=lambda r: r['qtd']*r['price'] > > > On Jan 14, 8:51 am, Alexandre Andrade <[email protected]> > > wrote: > > > What is the best solution to automatically calculate a total field? > > > > db.define_table ('order_detail', > > > Field('product_name'), > > > Field('qtd', 'integer'), > > > Field('price', 'integer'), > > > Field('total', 'integer', writable=False) > > > ) > > > > Where total = qtd * price > > > > requires and a custom validator? how to do? > > > onvalidation on form? how to do? > > > > -- > > > Atenciosamente > > > > -- > > > ========================= > > > Alexandre Andrade > > > Hipercenter.com > > > -- > > You received this message because you are subscribed to the Google Groups > > "web2py-users" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<web2py%[email protected]> > > . > > For more options, visit this group at > >http://groups.google.com/group/web2py?hl=en. > > -- > Atenciosamente > > -- > ========================= > Alexandre Andrade > Hipercenter.com
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