Ember Handling 401s Revisited in 2015

I can find a ton of old questions asking/answering how to handle 401s from the Rails backend in Ember/Ember Data. Many, if not all, seem to be outdated at this point. I have tried everything I could find. (Ember-Data handling 401’s)

But no matter what I do I just keep getting 401 errors in the console while the 401s are never caught in my code. All I want to do is add a redirect to '/' if a 401 is ever encountered in any place/model/anything. I don't need any checking for authentication or anything else.

I have tried adding this to the Application Route actions as well as to to the Router itself.

error: function (error, transition) {
  console.log("err: " + error.status);
  if (error && error.status === 401) {
    return this.transitionToRoute('/');
  }
}

I've also tried several variations of this http://ift.tt/1Fv3GQl.

App.ApplicationAdapter = DS.RESTAdapter.extend({
  ajaxError: function(jqXHR) {
    var error = this._super(jqXHR);
    console.log("jqXHR: " + jqXHR.status);
    if (jqXHR && jqXHR.status === 401) {
      #handle the 401 error
    }
    return error;
  }
});

I'm obviously a noob so maybe I'm missing something simple here. None of my console.log's are getting triggered unless it's for a new error I've introduced trying to get this to work. Is there a current, 'best practice' style way of doing this?