Uh oh...I just removed requires from the computed field and reran my unit tests, and now validate_and_insert inserts but the computed field isn't calculated at all! I tried insert and it does the computation.
Is there some reason validate_and_insert would not compute where insert does? On Wednesday, April 19, 2017 at 7:27:45 PM UTC-4, Chris wrote: > > I looked it up: > > Notice that requires=... is enforced at the level of forms, required=True >> is enforced at the level of the DAL (insert), while notnull, unique and >> ondelete are enforced at the level of the database. While they sometimes >> may seem redundant, it is important to maintain the distinction when >> programming with the DAL. >> > > The mix of form, DAL and database level validation threw me off, but I > think I get it now. requires= would be checked before any DAL logic. I'll > remove the logic from the computed field. Hopefully it should be populated > for all future values. Thanks! > > On Tuesday, April 18, 2017 at 7:08:39 PM UTC-4, Anthony wrote: >> >> On Tuesday, April 18, 2017 at 5:41:38 PM UTC-4, Chris wrote: >>> >>> Thanks for the info Anthony! I'll try one of those approaches. >>> >>> Why is validation run before compute? >>> >> >> In terms of implementation, compute is handled in the .insert() method, >> which must necessarily run after validation. I suppose we could add code to >> calculate computed values before validation in the .validate_and_ methods, >> but I don't think that really makes sense. Computed fields should not need >> to be validated, as they are in control of generating their own values. You >> should instead validate the inputs to the computed field. >> >> Anthony >> > -- Resources: - http://web2py.com - http://web2py.com/book (Documentation) - http://github.com/web2py/web2py (Source code) - https://code.google.com/p/web2py/issues/list (Report Issues) --- You received this message because you are subscribed to the Google Groups "web2py-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to web2py+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
