<SCRIPT type="text/javascript">
        <!--
        var setting = {
            data: {
                simpleData: {
                    enable: true
                }
            }
        };

        var zNodes =[
            { id:1, pId:0, name:"父节点1 - 展开", open:true},
            { id:11, pId:1, name:"父节点11 - 折叠"},
            { id:111, pId:11, name:"叶子节点111"},
            { id:112, pId:11, name:"叶子节点112"},
            { id:12, pId:1, name:"父节点12 - 折叠"},
            { id:121, pId:12, name:"叶子节点121"},
            { id:22, pId:2, name:"父节点22 - 折叠"},
            { id:223, pId:22, name:"叶子节点223"},
            { id:224, pId:22, name:"叶子节点224"},
            { id:23, pId:2, name:"父节点23 - 折叠"},
            { id:231, pId:23, name:"叶子节点231"},
            { id:232, pId:23, name:"叶子节点232"},
            { id:233, pId:23, name:"叶子节点233"},
            { id:234, pId:23, name:"叶子节点234"},
            { id:3, pId:0, name:"父节点3 - 没有子节点", isParent:true}
        ];

        $(document).ready(function(){
            $.fn.zTree.init($("#treeDemo"), setting, zNodes);
        });
        //-->
    </SCRIPT>

我想把里面这个结点的数据换成数据库的，从后台数据库中获取数据，想问下怎么写，有一个 json.jbuider 文件

json.array!(@menus) do |m|
  json.id m.id
  json.pId m.parent_id
  json.name m.name
end

然后我是这样写的，但是数据显示不出来，搞不到了现在，代码如图

<SCRIPT type="text/javascript">
    <!--
    var setting = {
        async: {
            enable: true,
            type: "get",
            dataType:"json",
            url:"index.json.jbuilder",
            autoParam:["id","name"],
            dataFilter: filter
        },
        data: {
            simpleData: {
                enable: true,
                idKey:"id",
                pIdKey:"pId",
                rootPId:null
            }
        }
    };
    function filter(treeId, parentNode, childNodes) {
        if (!childNodes) return null;
        for (var i=0, l=childNodes.length; i<l; i++) {
            childNodes[i].name = childNodes[i].name.replace(/\.n/g, '.');
        }
        return childNodes;
    }
    $(document).ready(function(){
        $.fn.zTree.init($("#treeDemo"), setting);
    });
    //-->
</SCRIPT>