Is it valid to inject the $rootScope into Controller in order use or override models/method defined under $rootScope in AngularJS?

Question

I've defined some models in App.run below which I'm overriding within the controller someCtrl:

App.run(['$rootScope', function($rootScope) {
  $rootScope.attempt = 1;
});

function someCtrl($scope, $rootScope) {
  $rootScope.attempt = 2;

  $rootScope.checkAttempt = function () {
    return $rootScope.attempt > 1 ? true : false;    
  };
}

There is a button on the page out of someCtrl's scope:

<button class='btn' ng-disabled="checkAttempt()">Who's changing my value?</button>

FYI, I'm aware of creating a service or using emit-broadcaste mechanism to share data across controllers but I would like to know How authenticate is it to inject $rootScope into a controller?

Answer 1

IMHO, I think its fine to inject $rootScope into a controller. I would recommend using emit/broadcast.