angularjs – angular.js ui-router将变量传递给状态url

.state('details',{
    url: '/details/:index',templateUrl: 'views/details.html'
})

该索引正在通过一个ng重复索引

<div ng-repeat="program in programs">
            <h2>{{program.name}}</h2>

            <p>{{program.description || "No Description"}}</p>

            <p><a ui-sref="details({index: $index})">View details ?</a></p>
 </div>

我的问题是在details.html中如何读取在状态的URL中传递的索引？