javascript - 解析 CloudCode 函数不起作用。调用它时出现错误

Question

CloudCode 函数是:

Parse.Cloud.define('addFriend', function(request, response) {
   var userId = request.params.userId;

   var User = Parse.Object.extend('_User'),
       user = new User({ objectId: userId });

   var currentUser = request.user;

   var relation = user.relation("Friends");
   relation.add(currentUser);

   Parse.Cloud.useMasterKey();
   user.save().then(function(user) {
       response.success(user);
   }, function(error) {
    response.error(error)
   });
});

当我使用 PFCloud 调用从 Xcode 调用它时...我在控制台中收到下一个错误:

[Error]: ReferenceError: parent is not defined
at e.n.value (Parse.js:13:7510)
at main.js:10:14 (Code: 141, Version: 1.8.2)

这意味着实际问题是该关系没有父级。它应该已经有 'user' 变量作为父变量，因为我正在调用 user.relation("Friends") ，这就是文档所说的:“你很少应该手动设置父变量，因为你很可能会调用Parse.Object.relation('键')。"这就是我正在做的。

更新

即使这段代码也给出了同样的错误:

 Parse.Cloud.define("addFriend", function(request, response) {
    Parse.Cloud.useMasterKey();

    var currentUser = request.user;
    var relation = currentUser.relation("Friends");
    relation.add(currentUser);
});

更新 2:

用户JSON

{
   "FriendRequests": {
    "__type": "Relation",
    "className": "_User"
},
   "Friends": {
    "__type": "R‌​elation",
    "className": "_User"
},
"createdAt": {
    "__type": "Date",
    "iso": "2015-09-10T17:29‌​:03.181Z"
},
"sessionToken": "r:KkmTu7xRjTEFpl0vcANVf0xXH",
"updatedAt": {
   "__type": "Dat‌​e",
   "iso": "2015-09-10T17:29:03.181Z"
 },
 "username": "bogdan12",
 "objectId": "BmbNRxCyau‌​"

关系 JSON

{
    "__type": "Relation",
    "className": "_User"
}

Answer 1

尝试替换:

var User = Parse.Object.extend('_User'),
    user = new User({ objectId: userId });

与:

    user = new Parse.User.createWithoutData(userId);

编辑:

对我来说效果很好...这是我尝试过的:

云:

Parse.Cloud.define('addFriend', function(request, response)
{
    var currentUser = request.user;
    var userId = request.params.userId;
    var user = new Parse.User.createWithoutData(userId);

    var relation = user.relation("Friends");
    relation.add(currentUser);

    Parse.Cloud.useMasterKey();
    user.save().then(function(user) {
        response.success(user);
    }, function(error) {
        response.error(error)
    });
});

客户:

[PFCloud callFunctionInBackground:@"addFriend" withParameters:@{@"userId":@"s8BMHtnqSZ"} block:^(id object, NSError *error) {
    if (!object || error) {
        LogError(error, @"Calling addFriend failed.");
    } else {
        LogInfo(@"Calling addFriend succeeded.");
    }
}];

也许你应该在这里提交错误报告:https://www.parse.com/help