Wijmo 5 - AddNew and sorting

HTML

<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<link rel="stylesheet" href="http://cdn.wijmo.com/5.latest/styles/wijmo.min.css">
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.input.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.grid.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/controls/wijmo.chart.min.js"></script>
<script src="http://cdn.wijmo.com/5.latest/interop/angular/wijmo.angular.min.js"></script>
<!-- mark this as an Angular application and give it a controller -->
<div ng-app="app" ng-controller="appCtrl" class="container">

  <h1>Grid Sorting</h1>
  
  <wj-flex-grid items-source="data" control="flex" initialized="init(flex)">
    <wj-flex-grid-column binding="country.name" header="Country" data-type="Object" width="150">
      <wj-flex-grid-cell-template cell-type="Cell">
        <div>
          {{$item.country.name}}
        </div>
      </wj-flex-grid-cell-template>
    </wj-flex-grid-column>
    <wj-flex-grid-column binding="country2" header="Country2">
      <wj-flex-grid-cell-template cell-type="Cell">
        <div>
          {{$item.country2.name}}
        </div>
      </wj-flex-grid-cell-template>
    </wj-flex-grid-column>
    <wj-flex-grid-column binding="sales" header="Sales"></wj-flex-grid-column>
    <wj-flex-grid-column binding="expenses" header="Expenses"></wj-flex-grid-column>
    <wj-flex-grid-column binding="downloads" header="Downloads"></wj-flex-grid-column>
  </wj-flex-grid>
  <button type="button" class="btn btn-default" ng-click="sort()">
    Sort Country
  </button>
</div>

CSS

.wj-flexgrid {
  max-height: 250px;
}

JavaScript

// define app, include Wijmo 5 directives
var app = angular.module('app', ['wj']);

// controller
app.controller('appCtrl', function($scope) {

  // create some random data
  var countries = [{
  	name: 'US',
  	state: 'abc'
  },
  {
  	name: 'Germany',
  	state: 'def'
  }];
  var data = [];
  for (var i = 0; i < countries.length; i++) {
    data.push({
      country: countries[i],
      country2: countries[countries.length -1 -i],
      downloads: Math.round(Math.random() * 20000),
      sales: Math.random() * 10000,
      expenses: Math.random() * 5000
    });
  }
  
  $scope.init = function(grid){
  	/* console.log(grid) */;
    grid.collectionView.sortConverter = (sd, item, value)=>{
    	if(sd.property!="country2"){
      	return value;
      }
      
      return item.country2.name;
    }
  }
  
  

  // expose data as a CollectionView to get events
  $scope.data = new wijmo.collections.CollectionView(data);
  $scope.data.sortDescriptions.push(new wijmo.collections.SortDescription('sales','true'));

  
  $scope.sort = function() {
  	$scope.data.sortDescriptions.clear();
    $scope.data.sortDescriptions.push(new wijmo.collections.SortDescription('country.name','true'));
  }
});