将属性保存在从查询中获取的用户上(即，不在currentUser上) [英] Saving attributes on a user fetched from a query (i.e. not on the currentUser)

问题描述

我有兴趣根据我的currentUser执行的操作将属性保存到数据库中的用户.根据以下代码，我收到错误消息除非通过登录或注册对用户进行身份验证，否则无法保存用户"

I am interested in saving attributes to users in the database based on actions that are performed by my currentUser. Based on the following code, I get the error message "User cannot be saved unless they have been authenticated via logIn or signUp"

NSString *IDToFetch = @"some_id";
PFQuery *query = [PFUser query];
[query whereKey:@"user_id" equalTo:IDToFetch];
PFUser *foundUser = (PFUser *)[query getFirstObject];

foundUser[@"new_column"] = @"Some text";
[foundUser saveEventually]; //here an exception is thrown

我想知道是否有解决方法，可以在不登录该用户的情况下将属性保存到foundUser.感谢您的帮助！

I was wondering if there is a work around to this where I could save attributes to the foundUser without having to log that user on. Thanks for your help!

推荐答案

如果要更新当前不是已登录用户的用户，则需要使用master-key调用Parse.

If you want to update a user that is not currently the logged in user you will need to call Parse using the master-key.

例如，您可以从CloudCode做到这一点；

You can do this from CloudCode for example;

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

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

    user.set('new_col', newColText);

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

并从您的iOS项目中调用它；

and calling it from your iOS project;

[PFCloud callFunction:@"editUser" withParameters:@{
    @"userId": @"someuseridhere",
    @"newColText": @"new text!"
}];

这篇关于将属性保存在从查询中获取的用户上(即，不在currentUser上)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！