Angular-ui-router: ui-sref-active and nested states

Instead of this-

<li ui-sref-active="active">
    <a ui-sref="posts.details">Posts</a>
</li>

You can do this-

<li ng-class="{active: $state.includes('posts')}">
    <a ui-sref="posts.details">Posts</a>
</li>

---

Currently it doesn’t work. There is a discussion going on here (https://github.com/angular-ui/ui-router/pull/927) And, it will be added soon.

UPDATE:

For this to work, $state should be available in view.

angular.module('xyz').controller('AbcController', ['$scope', '$state', function($scope, $state) {
   $scope.$state = $state;
}]);

More Info

UPDATE [2]:

As of version 0.2.11, it works out of the box. Please check the related issue: https://github.com/angular-ui/ui-router/issues/818