jQuery Validate – require at least one field in a group to be filled

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That’s an excellent solution Nathan. Thanks a lot.

Here’s a way making the above code work, in case someone runs into trouble integrating it, like I did:

Code inside the additional-methods.js file:

jQuery.validator.addMethod("require_from_group", function(value, element, options) {
...// Nathan's code without any changes
}, jQuery.format("Please fill out at least {0} of these fields."));

// "filone" is the class we will use for the input elements at this example
jQuery.validator.addClassRules("fillone", {
    require_from_group: [1,".fillone"]
});

Code inside the html file:

<input id="field1" class="fillone" type="text" value="" name="field1" />
<input id="field2" class="fillone" type="text" value="" name="field2" />
<input id="field3" class="fillone" type="text" value="" name="field3" />
<input id="field4" class="fillone" type="text" value="" name="field4" />

Don’t forget to include additional-methods.js file!

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