ng-controller-like-but-resolves

// NOT TESTED. Use with `<div my-controller="exampleCtrl" locals="{some: someVal, another: anotherVal}">`

angular.module('exampleApp', [])
.directive('myController', ['$controller', '$q', function ($controller, $q) {
  return {
    scope: true,
    priority: 500,
    link: function (scope, elem, attrs) {
      var locals = scope.$eval(attrs.locals);
      var promises = {};
      angular.forEach(locals, function (local, name) {
        if (angular.isFunction(local)) {
          var value = local();
          if (value && value.then) {
            promises[name] = value;
          }
        }
      });
      angular.extend(locals, {$scope: scope});
      if (promises) {
        $q.all(promises).then(function (resolves) {
          angular.extend(locals, resolves);
          $controller(attrs.myController, locals);
        });
      } else {
        $controller(attrs.myController, locals);
      }
    }
  };
}]);