For simple use-n-throw (non-dynaforms?) forms, a much better *generic* solution
:-
At the VERY BOTTOM (please note the caps to get your attention ;-) ) of the JSP
that displays the form :-
<% MyForm frm = (MyForm) request.getAttribute("formname");
frm.reset();
%>
In scenarios where the user can "temporarily" navigate to other pages and comes
BACK to this page.... the user will find all values gone...
So, it works wonderfully ONLY for use-n-throw forms.
>From my experience, forms with such checkboxes are not on the 'main page'
>(that the user keeps coming back to for all screen flows).
All my forms are explicit bean-classes, -- others can let you know if reset()
works on dynaforms.
And do not forget to code your reset() function.
> -----Original Message-----
> From: Wiebe de Jong [mailto:[EMAIL PROTECTED]
> Sent: Friday, November 12, 2004 12:59 PM
> To: 'Struts Users Mailing List'
> Subject: RE: Multibox deselection problem
>
>
> This is a problem with HTTP: when all the checkboxes are
> deselected, the
> browser doesn't send anything back, so you get the default of what you
> started with. To solve this problem you must ensure that at
> least one box is
> always selected.
>
> I solved this problem by creating an additional checkbox that
> is hidden,
> read-only and selected. This will ensure that the browser
> sends something
> back.
>
> String[] defaultEntities = {"A", "B", "C", "D", "filler"};
>
> <tr style="display:none;"><td><html:multibox property="marketing"
> value="filler"/></td></tr>
>
> Wiebe
>
> -----Original Message-----
> From: Olivier Croisier [mailto:[EMAIL PROTECTED]
> Sent: Friday, November 12, 2004 6:47 AM
> To: [EMAIL PROTECTED]
> Subject: Multibox deselection problem
>
> Hi !
>
> I have a problem with the Multibox behaviour. I have checked
> the online doc
> but nothing helped me so far... Here is my problem :
>
> My app workflow is :
> prepareImportAction.do -> Import.jsp -> processImportAction.do
>
> In the prepareImportAction.do, I initialize the "entities"
> var (of type
> String[], in session scope), so that the checkboxes are
> checked by default
> when the jsp page is displayed :
> String[] defaultEntities = {"A", "B", "C", "D"};
> myform.set("entities", defaultEntities);
>
> In the jsp page, I have a set of :
> <html:multibox property="entities" value="A"/>
> <html:multibox property="entities" value="B"/>
> <html:multibox property="entities" value="C"/>
> <html:multibox property="entities" value="D"/>
>
> I also have a small javascript that allows the user to select
> or deselect
> all checkboxes in one click :
> function checkAll(field)
> { var i;
> for (i=0;i<field.length;i++)
> { field[i].checked=true; }
> }
> (nearly the same for de-selecting all checkboxes)
>
> Now here is my problem. When I de-select all the checkboxes
> in my jsp page,
> by hand or by javascript, my processImport.do receives a
> String[] array
> containing the entities that were defined in preparaImport.do
> as default,
> instead of an empty array.
> This only happens only when all entities are deselected : if
> a single one is
> selected, I get the desired behaviour.
>
> May you help me to understand where I am wrong and why it doesn't work
> please?
>
> Olivier Croisier
>
> --
> CROISIER Olivier
> Software Engineer
> Thales IS - ANS
> [EMAIL PROTECTED]
>
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