I figure he means something like:
Imagine you have several companies working with your applicacion, and
you have a table with fields like:
- Company
- Name
- ...

 Normally you would want to make Name unique, but in this case you
probably want to make the combination of Company and Name Unique, so
that a name is unique within each company.

This is something I have also been struggling with, and so far the
only solution I have found is making a hidden field the combination of
the two, but maybe there is a better way to do this. (This example is
with IS_NOT_IN_DB but I'd guess the solution would be the same for
IS_IN_DB).

Tititi, sorry if I have missinterpreted what you wanted to say.

Benigno.

On Sep 2, 5:25 pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> What do you mean to be validated in this case, can you provide an
> example?
>
> On Sep 2, 8:56 am, tititi <briant...@gmail.com> wrote:
>
> > Hi everyone,
>
> > I'm trying to keep the duplicate insert logic at the model level and
> > would like to find out if there is a way to do this. For example, I
> > would like a USER_ID and GROUP_ID to be validated before an insert can
> > be committed. Using IS_IN_DB with 2 fields work? If there isn't
> > support for it, is there a chance to add this feature in? Thanks.
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