Angularjs UI-Select2通过多个可选选项保存更改

我想知道是否有一种简单的方法来保存选定的数据。与select2的jquery版本类似。但这似乎不支持在角度的版本-可悲的

<select multiple="multiple" data-ui-select2 data-ng-model="data">
   ...
</select>

---

我是否遗漏了一些明显的内容？

使用下划线.js可以很容易地检测添加或删除的项目

$scope.$watch('data', function (newValue, oldValue) {
   // logic to detect if something was added or removed
    if (newValue.length > oldValue.length) {
        // something was added
        var added = _.difference(_.pluck(newValue, 'id'), _.pluck(oldValue, 'id'));
        // do stuff
    } else if (newValue.length < oldValue.length) {
        // something was removed
        var removed = _.difference(_.pluck(oldValue, 'id'), _.pluck(newValue, 'id'));
        // do stuff
    }
});

$scope.$watch（'data'，函数（newValue，oldValue）{
//检测是否添加或删除了某些内容的逻辑
if（newValue.length>oldValue.length）{
//添加了一些内容
var added=u0.difference（0.pull（newValue，'id'），0.pull（oldValue，'id'））；
//做事
}else if（newValue.length

但它仍然是控制器中的手表，这并不理想

$scope.$watch('data', function (newValue, oldValue) {
   // logic to detect if something was added or removed
    if (newValue.length > oldValue.length) {
        // something was added
        var added = _.difference(_.pluck(newValue, 'id'), _.pluck(oldValue, 'id'));
        // do stuff
    } else if (newValue.length < oldValue.length) {
        // something was removed
        var removed = _.difference(_.pluck(oldValue, 'id'), _.pluck(newValue, 'id'));
        // do stuff
    }
});