Angular ng-options按问题跟踪 [英] Angular ng-options track by issue

问题描述

我有一个使用ng-options显示的对象数据集.我使用track by

I have a data set of objects that I'm displaying using ng-options. I'm binding the objects ID value to the value using track by

当前，包括数据值，但它们以逗号显示.例如...

Currently, the data values are being included but they're being displayed with commas. For example...

$scope.items = [
   {ID: '2012', Title: 'Chicago'},
   {ID: '2013', Title: 'New York'},
   {ID: '2014', Title: 'Washington'},
];

<select ng-options="item.Title for item in items track by item.ID">
</select>

但这将呈现...

<option value="2,0,1,2" label="Chicago">Chicago</option>
<option value="2,0,1,3" label="New York">New York</option>

为什么要添加这些逗号，如何删除它们?

Why are these commas being added, and how can I remove them?

推荐答案

您不需要跟踪依据:

<select ng-options="i.ID as i.Title for i in items" ng-model="someModel"></select>

渲染后，您将拥有:

<option value="2012">Chicago</option>
<option value="2013">New York</option>

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