The code is already in place to set the hidden field to the correct
value when the form is submitted.
On Sat, Mar 22, 2008 at 11:59 AM, Adam Zimowski <[EMAIL PROTECTED]> wrote:
> Per documentation, FormFragment decides if its content should be
> submitted based on the hidden field [formfragmentname]:hidden:
>
> // this is the relevant code from FormFragment source: void beginRender(..)
> writer.element("input",
>
> "type", "hidden",
>
> "name", _controlName,
>
> "id", _clientId + ":hidden",
>
> "value", String.valueOf(_visible));
> writer.end();
>
>
> However, that field being generated at render time is fairly static,
> which defeats the very purpose of dynamic behavior provided by
> Tapestry.ElementEffect sidedown/slideup functions. The problem is that
> when the silide function is invoked on the client (triggered by click
> on the checkbox), that inherently means that FormFragment should be
> submitted, but it won't be if the hidden field was generated with
> false value.
>
> The solution to this problem should be Tapestry dynamically changing
> hidden field's value to true/false based on the client side state of
> the checkbox tied to the FormFragment. For those who need a
> workaround, I can share mine. In onclick of submit button one can
> execute the following function:
>
> function setupFragment(fragment, checkbox) {
> var checked = document.getElementById(checkbox).value;
> var advanced = (checked == 'on');
> document.getElementById(fragment + ':hidden').value=advanced;
> }
>
>
> <input t:id="submitButton"
> onclick="setupFragment('advancedFragment','advancedCheckbox');"
> type="submit" t:type="submit" value="Submit"/>
>
> I believe this should be one of those "plumbing" tasks that Tapestry
> should do for us. Should this be a JIRA improvement, or am I missing
> something?
>
> -adam
>
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--
Howard M. Lewis Ship
Creator Apache Tapestry and Apache HiveMind
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