如何让ng-model在对象数组中单独工作？

<div ng-repeat="item in items track by item.id">
  <input type="text" ng-model="item.name">
</div>

<div ng-repeat="item in items">
  <input type="text" ng-model="items[$index].name">
</div>

app.directive('individualModel', function() {
  return {
    restrict: 'A',
    require: 'ngModel',
    link: function(scope, element, attrs, ngModelCtrl) {
      ngModelCtrl.$parsers.push(function(value) {
        // 处理ng-model的值
        return processedValue;
      });

      ngModelCtrl.$formatters.push(function(value) {
        // 处理ng-model的值
        return processedValue;
      });
    }
  };
});

<div ng-repeat="item in items">
  <input type="text" ng-model="item.name" individual-model>
</div>