Checkbox problem - checkboxes submitting that are unchecked

[Claire]

Hello,

I am having a problem in my struts application with the checkboxes in
my form. I have an array of checkboxes, some of which may be already
selected when the form loads. My problem is when the user then
deselects one or more of these checkboxes and submits the form -
they're being submitted as if they were still checked, when the user
has infact deselected them.

I've heard that this is a common problem, but I don't seem to be able
to find the problem / resolution with any search criteria. If anybody
knows the fix for this it would be greatly appreciated (preferably
without having to use Javascript)

Many Thanks, Claire

Here's the HTML for the checkbox part of the form when it's initially
loaded.

<table style="width:50 %;" cellpadding="0" cellspacing="0" >
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Red </td>
<td align="left" width="15%">
<input type="checkbox" name="cust[0].add" value="on"
checked="checke d">
</td>
</tr>
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Ora nge</td>
<td align="left" width="15%">
<input type="checkbox" name="cust[1].add" value="on"
checked="checke d">
</td>
</tr>
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Yel low</td>
<td align="left" width="15%">
<input type="checkbox" name="cust[2].add" value="on"
checked="checke d">
</td>
</tr>
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Gre en</td>
<td align="left" width="15%">
<input type="checkbox" name="cust[3].add" value="on">
</td>
</tr>
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Blu e</td>
<td align="left" width="15%">
<input type="checkbox" name="cust[4].add" value="on">
</td>
</tr>
<tr class="spreadsh eetvalue">
<td align="left" width="85%">Pur pler</td>
<td align="left" width="15%">
<input type="checkbox" name="cust[5].add" value="on">
</td>
</tr>
</table>

[claire.williams@thebookpeople.co.uk]

Re: Checkbox problem - checkboxes submitting that are unchecked

Hello,

My problem was that I had not implemented a

reset (ActionMapping mapping, HttpServletRequ est request)

method. So for those who know Struts, I had to change my DynaActionForm
and create a normal Action Form which implemented a reset() method. The
reset method looped through the array, setting the boolean
(representing the checkbox) to false.

The reset() method is automatically called before my preload action to
prepolulate values (so only reset if the array isn't null, otherwise I
got a NullPointerExce ption) and then again once the form is submitted
(the crucial bit, initialising checkboxes back to false and then
populating with the selected form values).

Many Thanks, Claire