如何使用“ng repeat”和“ng model”输入编辑对象属性

这是我的HTML:

  <div ng-repeat="n in items">

           <ul ng-repeat="(name, param) in n.params"  style="list-style-type: none;">
             <li>{{name}} : {{param}}</li>
           </ul>
       <input style="display:inline;width:130px;margin-bottom:5px;margin-top:5px;"
           class="form-control" name="text" placeholder="age"
           ng-model="age">
       <input style="display:inline;width:115px;margin-bottom:5px;margin-top:5px;" 
           class="form-control" name="text" placeholder="weight"
           ng-model="weight">
       <br />
       <button class="btn btn-warning" type="button"
           ng-click="add(n.params , age , weight)">Update</button>
 </div>

我的JS:

$scope.items = [ 
       {
          "params": {
            "age": 22,
            "weight": 66
          }
     },
       {
          "params": {
            "age": 19,
            "weight": 54
          }
     },
       {
          "params": {
            "age": 17,
            "weight": 75
          }
    }
 ]


   $scope.add = function(params , age, weight) {
         $scope.params = params;
         if(age)
          $scope.params.age = age;
       if(weight)
          $scope.params.weight = weight;
          console.log($scope.params);
        }

我想像在我的示例中那样编辑数组,但是在类似这样的外观中:

 <ul ng-repeat="(name, param) in n.params"  style="list-style-type: none;">
    <li>{{name}} :   
        <input style="display:inline;width:130px;margin-bottom:5px;margin-top:5px;"
            class="form-control" name="text" placeholder="param"
            ng-model="param">
    </li>
 </ul>

这是我的小东西: http://plnkr.co/edit/h4BGIs8nPM3wZfJrwcFT?p=preview 谢谢提前回答!!!!