JavaScript Inject anonymous value into closed directive scope

i was curious if it's possible to inject an value into a directives' close scope. I could't find anything related in the angularjs documentation so I tried something. Does anybody know if there is an more elegant way to solve this?

My approach so far:

app.directive('injectIntoScopeDirective', function(){
  return {
    restrict: 'E',
    scope: {},
    templateUrl: 'inject.tpl.html',
    link: function(scope, elem, attrs){

      angular.forEach(attrs, function(val, attr){
        // variables which should be injected must be prefixed with the inject keyword
        var match = attr.match(/^inject(.*)/);

        if( match !== null && match.length > 1 ){
          scope['injected' + match[1].toLowerCase()] = val
        }
      });
    }
  }
});

Here is a working plunk

A new approach using the bindToController property. Much cleaner.

app.directive('injectIntoScopeDirective', function(){
  return {
    restrict: 'E',
    scope: {},
    controller: function(){

    },
    bindToController: {
      inject: '=' // allows us to bind an object to the directive controller
    },
    controllerAs: 'injectCtrl',
    templateUrl: 'inject.tpl.html'
    // no linking function needed
  }
});

Updated plunk using bindToController property

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