Making Grails-UI dataTable parent-child relationship

gistfile1.js

YAHOO.util.Event.onDOMReady(function() {

    var childTableRenderCallback = {
        success: function(o) {
            if (o.responseText !== undefined) {
                // kill off any existing data tables to manage memory
                if (GRAILSUI.childTable != undefined) {
                    GRAILSUI.childTable.destroy();
                }
                var resultsDiv = document.getElementById('childPanel');
                GRAILSUI.replaceWithServerResponse(resultsDiv, o);
            }
            YAHOO.util.Dom.removeClass('childPanel', 'hidden');
        },
        failure: function(o) {
            alert('child table render error: ' + o.responseText);
        }
    };

    var renderChildTable = function(parentId) {
        YAHOO.util.Connect.asyncRequest('POST', '${createLink(controller:'myController',action:'populateChildTable')}', childTableRenderCallback, {'parentId'=parentId});
    };
    
    GRAILSUI.parentTable.subscribe('rowClickEvent', function(e) {
        var selectedRows = this.getSelectedRows();
        var parentId = this.getRecord(selectedRows[0]).getData().id;
        renderChildTable(parentId);
    });
});