AngularJS: Nested Nodes dynamically created

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.0rc8.js"></script>
<script type="text/ng-template"  id="tree_item_renderer.html">
    <span ng-click="add(data)">{{data.name}}</span>
    <ul>
        <li ng-repeat="data in data.nodes" ng-include="'tree_item_renderer.html'"></li>
    </ul>
</script>

<ul ng-app="Application" ng-controller="TreeController">
    <li ng-repeat="data in tree" ng-include="'tree_item_renderer.html'"></li>
</ul>

CSS

ul {
    list-style: circle;
}
li {
    margin-left: 20px;
}

JavaScript

angular.module("myApp", [])
    .controller("TreeController", ['$scope', function($scope) {
    $scope.delete = function(data) {
        data.nodes = [];
    };
    $scope.add = function(data) {
        var post = data.nodes.length + 1;
        var newName = data.name + '-' + post;
        data.nodes.push({
            name: newName,
            nodes: []
        });
    };
    $scope.tree = [{
        name: "Node",
        nodes: []}];}]);