AngularJS指令：多个被剔除的元素

我正在尝试添加一个body指令,它将有一个左面板和一个右面板.但是在这些面板之间我会有一些私有的body指令内容.我目前正在使用transclude = true选项来加载内容.但是,我正在寻找一种方法来使用两个ng-transclude.我调查了很多如何解决这个问题,但我找不到一个优雅的解决方案.我不得不在body指令的编译步骤中手动添加transcluded对象.以下是我解决的方法：

身体指令

var myApp = angular.module('myApp',[]);

myApp.directive('body',function () {
    return {
        restrict: 'A',transclude: true,scope: {
            title: '@'
        },templateUrl: 'body.html',compile: function compile(element,attrs,transclude) {
            return function (scope) {
                transclude(scope.$parent,function (clone) {
                    for (var i = 0; i < clone.length; i++){ 
                       var el = $(clone[i]);
                       if(el.attr('panel-left') !== undefined) {
                            element.find('#firstPanel').html(el);
                       } else if(el.attr('panel-right') !== undefined) {
                            element.find('#secondPanel').html(el);
                       }
                    }
                });
            }
        }
    };
});

myApp.directive('panelLeft',function () {
    return {
        require: "^body",restrict: 'A',replace: true,template: '<div ng-transclude></div>'
    };
});

myApp.directive('panelRight',template: '<div ng-transclude></div>'
    };
});

模板

<script type="text/ng-template" id="body.html">
    <h1> {{title}} </h1>
    <hr/>

    <div id="firstPanel" class="inner-panel"></div>
    <div id="innerMiddleContent" class="inner-panel">middle private content here</div>
    <div id="secondPanel" class="inner-panel"></div>
</script>

<div body title="Sample Body Directive">
    <div panel-left>
        Public content that goes on the left
    </div>   

    <div panel-right>
        Public content that goes on the right
    </div>    
</div>

Here是这个例子的JSFiddle.我正在寻找这样的东西：

好的模板

<script type="text/ng-template" id="body.html">
     <h1> {{title}} </h1>
     <hr/>

     <div id="firstPanel" class="inner-panel" ng-transclude="panel-left"></div>
     <div id="innerMiddleContent" class="inner-panel">middle private content here</div>
     <div id="secondPanel" class="inner-panel" ng-transclude="panel-right"></div>
 </script>

问题：我做错了吗？有没有推荐的方法来解决这个问题？

<div ng-multi-transclude="panel-left" class="inner-panel"></div>
<div ng-multi-transclude="panel-right" class="inner-panel">middle private content here</div>
<div id="secondPanel" class="inner-panel"></div>

<div body title="Sample Body Directive">
  <div name="panel-left">
    Public content that goes on the left
  </div>   

  <div name="panel-right">
    Public content that goes on the right
  </div>    
</div>