On 04/06/07, Carl Franks <[EMAIL PROTECTED]> wrote:
On 04/06/07, Jason Kohles <[EMAIL PROTECTED]> wrote:
> On Jun 2, 2007, at 7:45 AM, chylli wrote:
>
> > thanks for your reply. But where can i find
> > HTML::FormFu::Constraint::DBIC::Unique ? seems it is not in
> > HTML::FormFu svn repository.
> >
> Hmm, that's interesting, I assumed it was in subversion, now I don't
> remember where I got it from. Perhaps it was posted to the mailing
> list...
>
> Since Google can't seem to find it either, I'll attach a copy...
It was originally posted to the html-widget list by Jonas Alves.
I didn't add it to svn, but didn't get round to replying to explain
why - my bad!
Unless both the form processing and any subsequent use of the form
input, are wrapped within a DB transaction - then the uniqueness check
is rather useless.
Hi Carl,
Can you please explain why is it useless? I'm using this approach in production
and I'm satisfied with it.
And because the form processing is usually done by the catalyst
controller - before your code can access the form - transactions
aren't very practical.
I think the uniqueness check probably belongs in the user code - the
way I've done this in the past with html-widget was to add a blank
constraint that didn't really do anything, and then if my own code's
check failed, I would do $result->add_error() before redisplaying the
form.
FormFu doesn't support add_error(), but you should be able to get the
same result with $constraint->force_errors(1)
It is something that i check a lot before a form submit so it's handy
to have it in a constraint for reusability.
--
Jonas
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