Parse.com - 获取包含在 [PFUser currentUser] 中的指针数据 [英] Parse.com - Getting pointer data contained in [PFUser currentUser]

问题描述

我使用的是 Parse.com iOS SDK，我不知道我需要调用什么方法来确保 PFUser currentUser 包含其中包含的每个指针的数据.可能很简单，但是，作为这个平台的初学者，我找不到解决方案.

I am using the Parse.com iOS SDK, and I don't know what method I need to call to make sure that the PFUser currentUser contains the data for each pointer contained in it. It is probably very simple, but, as a beginner with this platform, I cannot find a solution.

只是为了澄清，我试图在下面获取用户名项.看起来它总是为空，即使我在继续之前调用 [[PFUser currentUser] fetchIfNeeded] :

Just to clarify, I am trying to get the username item in the following. It looks like it is always null, even though I am calling [[PFUser currentUser] fetchIfNeeded] before proceeding:

[[[PFUser currentUser] objectForKey:@"partner"] objectForKey:@"username"];

谢谢，

安德里亚

推荐答案

您可以使用 includeKey:

PFQuery *query = [PFUser query];
[query includeKey:@"partner"];
[query includeKey:@"anotherPointerColumnName"];
[query getObjectInBackgroundWithId:[[PFUser currentUser] objectId]
                             block:^(PFObject *populatedUser, NSError *error) {
    PFObject *partner = populatedUser[@"partner"];
    PFObject *another = populatedUser[@"anotherPointerColumnName"];
}];

你也可以使用更深的层次，所以如果 partner 包含一个指针，你需要调用 deeperPointerColumnName:

You can also use deeper levels, so if partner contained a pointer in it you needed called deeperPointerColumnName:

[query includeKey:@"partner.deeperPointerColumnName"];

然后在您的完成块中，您可以在获得合作伙伴后阅读:

Then in your completion block you can read it after you get the partner:

PFObject *partner = populatedUser[@"partner"];
PFObject *deeper = partner[@"deeperPointerColumnName"];

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