javascript - Angular : Updating controller scope variable through a factory variable

Question

我研究了如何正确执行此操作的示例，但它绝对不会在我这边更新。我设置了一个断点以确保它正在更新并通过工厂中的计时器并且它正在正确更新。我不应该使用 $watch 对吧？如果有人能帮我弄清楚发生了什么事，这将有助于缓解我现在的头痛，哈哈，谢谢。

工厂

app.factory('FoundationSystemStatusFactory', ['$timeout', '$q', 'SystemStatusFactory', function ($timeout, $q, SystemStatusFactory) {
var service = {};

service.Count = 0;

service.Ping = 0;

service.PollingTest = function() {
    $timeout(function () {

        SystemStatusFactory.PingIP('www.google.com')
            .then(function (data) {
                service.Ping = data.data;
                service.Count++;
            }, function (data) {
                service.Ping = data.data;
            });

        service.PollingTest();
    }, 2000);
}

return service;

}]);

Controller

 FoundationSystemStatusFactory.PollingTest();

 $scope.ping = FoundationSystemStatusFactory.Ping;  //NOT UPDATING

 $scope.count = FoundationSystemStatusFactory.Count;  //NOT UPDATING

编辑:尝试作为服务，仍然无法使其工作:

var self = this;

self.Count = 0;

self.Ping = 0;

self.PollingTest = function () {
    $timeout(function () {

        SystemStatusFactory.PingIP('www.google.com')
            .then(function (data) {
                self.Ping = data.data;
                self.Count++;
            }, function (data) {
                self.Ping = data.data;
            });

        self.PollingTest();
    }, 2000);
}

Answer 1

不同的方法 - 事件。

app.factory('FoundationSystemStatusFactory', ['$rootScope', '$timeout', '$q', 'SystemStatusFactory', function ($rootScope, $timeout, $q, SystemStatusFactory) {
var service = {
 Count: 0
};

service.PollingTest = function() {
    $timeout(function () {
        SystemStatusFactory.PingIP('www.google.com')
            .then(function (data) {
                $rootScope.$broadcast('FoundationSystemStatus:ping', data.data);
                service.Count++;
            }).catch(function (data) {
                $rootScope.$broadcast('FoundationSystemStatus:ping', data.data);
            });

        service.PollingTest();
    }, 2000);
}

return service;

}]);

//On controller...
$scope.$on('FoundationSystemStatus:ping', function(ping){
 $scope.ping = ping;
});