在 Cloud Code 中解析 LiveQuery

Question

我有一个 iOS 和 android 应用程序，部署在 Parse Server 中。现在，我想通过云函数使用 LiveQuery SDK！

这是我的云代码：

Parse.Cloud.define("subscribeQueryFunction", function(request, response) {
    var query = new Parse.Query("Message");
    var subscription = query.subscribe();

    subscription.on("create", (object) => {
        response.success(object);
    });
});

还有我的 Swift 代码：

    override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    PFCloud.callFunction(inBackground: "subscribeQueryFunction", withParameters: nil) { (res: Any?, e: Error?) in
        print(res)
        print(e)
    }
}

问题是，客户端没有得到响应！虽然，我检查了日志，订阅似乎已经建立：

2017-05-14T16:49:12.442Z - Ran cloud function subscribeQueryFunction for user D7FP3cts5p with: Input: {} Result: {"text":"hey","createdAt":"2017-05-14T16:49:12.412Z","updatedAt":"2017-05-14T16:49:12.412Z","objectId":"DXCiumOTal","__type":"Object","className":"Message"} 2017-05-14T16:49:11.101Z - Ran cloud function subscribeQueryFunction for user D7FP3cts5p with: Input: {} Result: {"text":"hey","createdAt":"2017-05-14T16:49:11.044Z","updatedAt":"2017-05-14T16:49:11.044Z","objectId":"qkXS6csCKJ","__type":"Object","className":"Message"} 2017-05-14T16:49:09.099Z - Ran cloud function subscribeQueryFunction for user D7FP3cts5p with: Input: {} Result: {"text":"hey","createdAt":"2017-05-14T16:49:09.080Z","updatedAt":"2017-05-14T16:49:09.080Z","objectId":"ydnrDHO9AP","__type":"Object","className":"Message"} 2017-05-14T16:47:45.183Z - Create new client: 0

有什么想法吗？

Answer 1

Live Query 不适用于服务器端。 Live Query 使用网络套接字，与您的客户进行实时交互。但是当你的应用程序关闭时，套接字也关闭了......所以你需要的是推送通知

如果您想制作一个带有解析功能的实时消息传递应用程序，您需要：

当您的应用程序打开时，实施解析实时查询以通过网络套接字获取新消息
使用推送通知，所以当您的应用程序关闭时，您会收到新消息

在 Cloud Code 中解析 LiveQuery

Parse LiveQuery in Cloud Code

livequery

ios

parse-platform

swift

parse-cloud-code