Have you considered using radio buttons instead of checkboxes? From a
UI standpoint, I think that would make more sense.
That aside, I do not know of any easy way to do this sort of
validation using the Validator plugin. I would override the validate
method in my action form for just those properties:
public class CustomForm extends ValidatorActionForm {
// Getters / setters
public ActionErrors validate(mapping, request) {
ActionErrors errors = super.validate(mapping,request); // this will
use the Validator framework
if (!checkbox1 && !checkbox2 && !checkbox3) return errors;
if ((checkbox1 && (checkbox2 || checkbox3)) ||
(checkbox2 && checkbox3) {
// add an ActionError to errors here
}
return errors;
}
}
-- Jeff
On 7/18/05, Harland, David <[EMAIL PROTECTED]> wrote:
> I have three checkboxes that can all either be unchecked or only one can
> be checked.
>
> How do I create a Validator rule for this. I don't think it is possible
> to do this neatly as I think you will always get more than one of the
> same error message. Can someone please tell me if I am right.
>
> Thanks
>
> Dave.
>
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