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ember.js - Ember App.Router.router.currentState undefined

I want to monitor App.Router.router.currentState for the purpose of activating/deactivating the navigation links. Something along the lines as explained here: https://stackoverflow.com/a/13312466/674525

However, the property currentState does not seem to exist in the router any more. App.get('Router.router.currentState') returns undefined.

I suppose, it changed in the recent Ember versions. Is there another way of doing this?

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I believe the "textbook" way to do that using the new Ember builds will be:

App.SomeController = Ember.Controller.extend({
    needs: 'application',
    someFunction: function(){
        var state = this.get('controllers.application.currentPath');
    }
})

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