jQuery Validation Plugin: Validating Checkboxes with Different Names

Question

I have a set of 4 checkboxes, all with different names, and require that at least 1 is checked.

I have set the class on all of them to \'require-one\'.

Answer 1

Justin has the correct answer. Here is an extension that consolidates the error reporting for all the check boxes into a single message:

http://jsfiddle.net/twd8j0tu/

$.validator.addMethod('require-one', function (value) {
              return $('.require-one:checked').size() > 0; }, 'Please check at least one box.');

var checkboxes = $('.require-one');
var checkbox_names = $.map(checkboxes, function(e,i) { return $(e).attr("name")}).join(" ");

$("#itemForm").validate({
    groups: { checks: checkbox_names },
    errorPlacement: function(error, element) {
             if (element.attr("type") == "checkbox")
               error.insertAfter(checkboxes.last());
             else
               error.insertAfter(element);
    }         
});

(Please note that this code doesn't seem to work after jquery.validate.js version 1.10.0. You will have to modify it for later versions).