Reload AngularJS Controller

Question

I\'m a newbie to angularjs.

My problem is that I have a User Controller for handling Login and Logout. I have also another controller to load a header menu for my site.<

Answer 1

There's no need to reload your controller. Angular is smart enough to change the template when the $scope.isAuthenticated state changes.

One problem I see in your code is that once the $scope.isAuthenticated is defined it does not change anymore. I suppose you are setting AuthenticationService.isAuthenticated = true when user logs in but that change aren't being propagated to the $scope.isAuthenticated property because in JavaScript scalar values are copied by value instead of by reference.

There are many approaches, such as changing the AuthenticationService.isAuthenticated property from a boolean to a function:

angular.module('auth', [])
.factory('AuthenticationService', function () {
    // private state
    var isAuthenticated = false;

    // getter and setter
    var auth = function (state) {
        if (typeof state !== 'undefined') { isAuthenticated = state; }
        return isAuthenticated;
    };

    // expose getter-setter
    return { isAuthenticated: auth };
});

Then assign that function to the $scope:

$scope.isAuthenticated = AuthenticationService.isAuthenticated;

Then use the function in your template (don't forget the parens)

Edit:

While writing a plunk to show you a working example I have realized that the link function of the directive is not called more than once, so as exposed in this stackoverflow thread I just modified the directive to observe changes in the isauthenticated attribute:

angular.module('directives', [])
.directive('appHeader', function() {
  var bool = {
    'true': true,
    'false': false
  };

  return {
    restrict: 'E',
    link: function (scope, element, attrs) {
      attrs.$observe('isauthenticated', function (newValue, oldValue) {
        if (bool[newValue]) { scope.headerUrl = 'authenticated.html'; }
        else { scope.headerUrl = 'not-authenticated.html'; }
      });
    },
    template: '
'
  }
});

And here is the working example