app
        .directive('activeLink', function($location) {
            return {
                restrict: 'A',
                link: function($scope, $element, attrs) {
                    var classname = attrs.activeLink;
                    var path = $element.children('a[href]').attr('href');
                    $scope.location = $location;
                    $scope.$watch('location.path()', function(newPath) {
                        if ((path === '/' && path === newPath) || (newPath.indexOf(path) === 0 && path !== '/')) {
                            $element.addClass(classname);
                        } else {
                            $element.removeClass(classname);
                        }
                    });
                }

            };
        });