To really do something like this properly you'd probably have to mess around
with the internal implementations of FormSupport / AbstractFormComponent in
order to skip over rewinding of form components that you don't want
validated / values parsed from.

This also starts to slide into the world of direct rendering / etc. Not an
easy thing to do currently. I plan on implementing this in 4.1, but will
probably save it for last as I'm assuming I'll need lots of time to play as
it'll probably be as hard to implement as adding the new render cycle was.
(Not that it was hard to do because of tapestry, just hard to do in a clean
/ intuitive / non-breaking way that makes sense for the API . )

On 7/8/06, Brian Duchek <bduchek@icon...> wrote:
>
> I believe that you need to keep the logic for determining if only B should
> be updated in your submission listener, and use a hidden field/component to
> track the values last sent to the client.  So if the user updates A + B, but
> only wants to store changes to B...  You send everything back to the server,
> decide to only truly "keep" the change to B, and then scrape the original
> value for A from the hidden component and overwrite whatever value for A was
> updated in the rewind of the formm.
>
> This is probably clear as mud, because I'm wrestling with the same issues
> right now in my application and am having issues.  Maybe someone on the list
> can help us determine if my recommendation has any merit or any major flaws.
>
> </bd>
>
> ________________________________
>
> From: Theo vN [mailto:theovn@gmai...]
> Sent: Sat 7/8/2006 2:35 AM
> To: Tapestry users
> Subject: Re: Re: RE: RE: Re: Partial form submit
>
>
>
> Another possibility would be for the form processing cycle only to
> receive updated values for the parts specified - "old" values for
> fields A and C and "new"/updated values for field B?
>
> On 08/07/06, Theo vN <theovn@gmai...> wrote:
> > The Tacos form works great. It can do a partial refresh for only on
> > the parts specified while it also updates the form component (updates
> > the hidden fields). What I am looking for (and maybe I'm naive) is a
> > partial form submit - in other words: if the form contains input
> > fields A, B, C then I want the ability to only post/submit the
> > contents of a defined part, say, containing only input field B and not
> > fields A or C - so the server only receives values for field B.
> >
> --
> Regards
> Theo
>
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--
Jesse Kuhnert
Tacos/Tapestry, team member/developer

Open source based consulting work centered around
dojo/tapestry/tacos/hivemind.