Call parent controller function in route
<p>I am using <strong>ngRoute</strong>, and I need to call parent controller function in my route controller. (I do not use $scope)
Part of index.html:</p>

<pre><code>&lt;div class="col-lg-12" ng-controller="IndexController as index"&gt;

    &lt;div ng-view&gt;
    &lt;/div&gt;

&lt;/div&gt;
</code></pre>

<p>And parent controller:</p>

<pre><code>(function(){
    'use strict';

    angular
        .module('project')
        .controller('IndexController', IndexController);

    function IndexController() {
        var vm = this;

        vm.hello = function() {
            console.log("Hello from parent controller");
        }
    }
})();
</code></pre>

<p>How can I call hello() in route controller?</p>