解析iOS SDK：从Xcode调用云函数 [英] Parse iOS SDK: Calling Cloud Functions From Xcode

问题描述

场景

我有这两个我想在我的应用程序中使用的云功能。他们检查用户的在线状态，我想为每个用户设置一个布尔键isOnline，如果用户在线则为YES，如果不在线则为NO。

Scenario
I have these two Cloud Functions that I want to use in my application. They check for the online status of the user and I want to set a boolean key "isOnline" for each user to YES if the user is online and to NO if they are not.

var moment = require("moment");

Parse.Cloud.define("registerActivity", function(request, response) {
    var user = request.user;
    user.set("lastActive", new Date());
    user.save().then(function (user) {
        response.success();
    }, function (error) {
        console.log(error);
        response.error(error);
    });
});

Parse.Cloud.define("getOnlineUsers", function(request, response) {
    var userQuery = new Parse.Query(Parse.User);
    var activeSince = moment().subtract("minutes", 2).toDate();
    userQuery.greaterThan("lastActive", activeSince);
    userQuery.find().then(function (users) {
        response.success(users);
    }, function (error) {
        response.error(error);
    });
});

问题

我不是最好的Javascript，因为我需要一些帮助，让我的头发发生什么/我应该做的。

Problem
I am not the best with Javascript, and because of that I need some help getting my head around what is happening/what I'm supposed to do.

问题 br>
1 ）我什么时候在Xcode项目中调用registerActivity和getOnlineUsers？

Questions
1) When do I call "registerActivity" and "getOnlineUsers" inside my Xcode project?

2 ）response.success（users）只是一个PFUser对象数组？

2) Is "response.success(users)" just an array of PFUser Objects?

3 是真的，那么如何在response.success（users）中将所有用户的bool键isOnline设置为YES，如果它们在数组中？

3) If "2)" is true, then how do I set the bool key "isOnline" for all of the users in the "response.success(users)" to YES if they are in the array?

推荐答案

1. 当你想获得在线用户时，你会调用这些函数。调用这些的代码是：

1. You would call these functions when you want to get the online users. The code for calling these would be:

[PFCloud callFunctionInBackground:@"registerActivity" withParameters:@{@"user": Put objectId for user here}                             
block:^(NSString *response, NSError *error) {
                                    if (!error) {

                                    }
                                }];

[PFCloud callFunctionInBackground:@"getOnlineUsers" withParameters:@{} 
block:^(NSArray *users, NSError *error) { 
if (!error) 
{

} }];

是的，我相信它只是一个PFUser对象数组，

Yes, I believe it would just be an array of PFUser objects, I would run this just to make sure, though.

从getOnlineUsers获取响应后，您应该将其发送回另一个云代码函数，键（ Parse.Cloud.useMasterKey（）; ）访问/更改用户对象，并将isOnline字段更改为YES。

Once you get the response from "getOnlineUsers" you should probably send it back up to another cloud code function that uses the master key (Parse.Cloud.useMasterKey();) to access/change user objects, and change the "isOnline" field to YES.

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