小提示相关代码：
http://jsfiddle.net/gFCzV/7/
我试图设置一个下拉的选定的值绑定到一个对象的子集合在一个ng-repeat引用。我不知道如何设置所选的选项，因为我不能以任何我知道的方式引用绑定的集合。
HTML：
<div ng-app="myApp" ng-controller="SomeController">
<div ng-repeat="Person in People">
<div class="listheader">{{Person.firstName}} {{Person.lastName}}</div>
<div class="listitem" ng-repeat="Choice in Person.Choices">
{{Choice.Name}}:
<select
ng-model="Choice.SelectedOption"
ng-options="choice.Name for choice in Choice.Options"></select>
{{Choice.SelectedOption.ID}}
</div>
</div>
</div>
JS：
var myApp = angular.module('myApp',[]);
myApp.controller("SomeController",function($scope) {
$scope.People = [{
"firstName": "John","lastName": "Doe","Choices": [
{
"Name":"Dinner","Options":[{Name:"Fish",ID:1},{Name:"Chicken",ID:2},{Name:"Beef",ID:3}],"SelectedOption":{Name:"Chicken",ID:2} //this doesn't work
},{
"Name":"Lunch","Options":[{Name:"Macaroni",{Name:"PB&J",{Name:"Fish","SelectedOption":""
}
],},{
"firstName": "Jane","lastName": "Doe"
}];
});
这是一个case，我实际上应该使用ng-init模型上的SelectedIndex？
如果使用AngularJS 1.2，您可以使用“track by”来告诉Angular如何比较对象。
原文链接：https://www.f2er.com/angularjs/145145.html<select
ng-model="Choice.SelectedOption"
ng-options="choice.Name for choice in Choice.Options track by choice.ID">
</select>
