Hi Dave Newton,

 Thanks for your reply quickly!

 please see my problem:

 generated HTML source segment by S2
...

<input type="checkbox" name="roleIds" value="ROLE_ADMIN" id="listRole_roleIds"/>
<input type="hidden" name="__checkbox_roleIds" value="ROLE_ADMIN"/>

<input type="checkbox" name="roleIds" value="ROLE_SUPER_USER"
id="listRole_roleIds"/>
<input type="hidden" name="__checkbox_roleIds" value="ROLE_SUPER_USER"/>

...


case1: if i checked all above checkboxs, the string array "
{"ROLE_ADMIN","ROLE_SUPER_USER"} " will be getted at server-side.
case2: if i only checked first checkbox, then at server-side the string
array "{"ROLE_ADMIN"}" will be getted.
case3: if i didn't select any checkbox, then at server-side the string array
" { "false" } " will be getted.

but in my opinion, the getted value should be NULL in case3. what's your
opinion?



2006/12/18, Dave Newton <DNewton@(protected)>:
>
> From: Denis Ling [mailto:denislingcn@(protected)]
> > the retrieved value of "roleId" is {"false"} when user doesn't select
> > any checkbox elements. In my opinion, this case should returns null
> > directly.
>
> Why?
>
> S2 automagically deals with one of the headaches of HTTP (not returning
> unchecked box values) by adding a hidden field to the form. This makes
> the server side code much cleaner, IMO.
>
> d.
>
>
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--
Thanks & Regards
Denis Ling