当ajax成功来自服务器时，数据绑定到ngrepeat不会更新。

Question

我正在尝试调用github api并使用ng repeat绘制数据。但是当数据使用AJAX时，它的值不会更新。 我做错了什么

这是我的html部分。

<div infinite-scroll='totalData.nextPage()' infinite-scroll-disabled='totalData.busy' infinite-scroll-distance='1' >
<div ng-repeat='item in totalData.items' >
  <span class='score'>{{item.owner.id}}</span>

</div>
<div ng-show='reddit.busy'>Loading data...</div>

这是我的js部分。

var app = angular.module('ngTableTutorial', ['infinite-scroll']);
   app.controller('tableController', function ($scope, $filter,Reddit) {
        $scope.totalData = new Reddit();

    });

    app.factory('Reddit', function($http) {
        var Reddit = function() {
            this.items = [];
            this.busy = false;
            this.after = 'https://api.github.com/repositories?since=862'+ "&jsonp=JSON_CALLBACK";
          };
          Reddit.prototype.nextPage = function() {
            if (this.busy) return;
            this.busy = true;

            var url = this.after+ "&jsonp=JSON_CALLBACK";
            $http.get(url).success(function(data, status, headers, config) {
            var regExp = /\<([^>]+)\>/;
            var test = regExp.exec(headers().link);
            console.log(test)
                console.log(data,headers().link)
                this.items.push(data)
                this.after = test[1];
                this.busy = false;
            }.bind(this));
          };

        return Reddit;
    });