解析Heroku迁移（MongoLab）：PFRelation问题 [英] Parse to Heroku migration (MongoLab): PFRelation issue

问题描述

我成功地使用mongolab将parse移植到parse-server。现在一切都按预期工作，除了当我使用MongoLab使用PFUser进行日志记录时，我的PFRelation对象始终为空。

在我的AppDelegate中，当我运行此代码Parse）：

  [解析setApplicationId：@xxxxxx
 clientKey：@xxxxxx]; 
 [PFUser enableRevocableSessionInBackground]; 
  

HomeView.m：

  self.currentUser = [PFUser currentUser]; 
 self.friendsRelation = [[PFUser currentUser] objectForKey：@friends]; 
 NSLog（@％@，self.currentUser）; 
 NSLog（@％@，self.friendsRelation）; 
  

登录后，我的HomeView登录：

  2016-02-28 23：25：38.756 ChillN [4131：57119]< PFUser：0x7fe0b3e4fc10，objectId：MZdPHaqByR，localId：（null）> {
 friends =< PFRelation：0x7fe0b3e4f900，0x7fe0b3e4fc10.friends  - > _User>; 
 phone =06 19 05 39 30; 
 surname = a; 
 username = a; 
} 
 2016-02-28 23：25：38.756 ChillN [4131：57119]< PFRelation：0x7fe0b3e4f900，0x7fe0b3e4fc10.friends  - > _user> 
  

所以一切正常。

mongolab db：

AppDelegate：

  [解析initializeWithConfiguration：[ ParseClientConfiguration configurationWithBlock：^（id< ParseMutableClientConfiguration>配置）{
 configuration.applicationId = @xxxxxxx; 
 configuration.clientKey = @xxxxxxx; 
 configuration.server = @http://xxxxxxx.herokuapp.com/parse/; 
}]]; 
  

在我登录后，我的HomeView登录了这个：

  2016-02-28 23：29：21.785 ChillN [4281：59046]< PFUser：0x7fa43c09ed20，objectId：MZdPHaqByR，localId：（null）> {
 phone =06 19 05 39 27; 
 surname = a; 
 username = a; 
 
 2016-02-28 23：29：21.786 ChillN [4281：59046]（null）
  

对于日志记录，我只是使用：

  [PFUser logInWithUsernameInBackground：user 
 password ：密码块：^（PFUser * user，NSError * error）{}]; 
  

以下是我的db：
解析：

Heroku（MongoLab）：

以下是MongoLab的用户记录：

  {
_id：MZdPHaqByR，
_perishable_token：SHuhtWl0EoxxmNLOkspmp1vBF，
用户名：a，
phone：[phone]，
surname：a ，
_session_token：zO2drjzrO0To1q0JiohaL8f4v，
_hashed_pa​​ssword：$ 2a $ 10 $ a7j5yB7uFDtv.YnHESVJgO9Io.nci8hbx7vngOo.FyzA3qBLxw38G，
_created_at：{
$日期：2016-02-28T21：55：48.548Z
}，
_updated_at：{
$ date：2016-02-28T22：03：45.704Z 
} 
} 
   
 
 
解决方案
这只是我的代码中的一个错误，我不得不更换： pre>  self.friendsRelation = [[PFUser currentUser] objectForKey：@friends]; 
  

至

  self.friendsRelation = [[PFUser currentUser] relationForKey：@friends]; 
  

希望这会对另一个有帮助。干杯！

I succeeded to migrate parse to parse-server with mongolab. Now everything works as expected, except when I'm logging with PFUser with MongoLab, my PFRelation object is always null.

In my AppDelegate, when I run this code (official Parse):

[Parse setApplicationId:@"xxxxxx"
              clientKey:@"xxxxxx"];
[PFUser enableRevocableSessionInBackground];

HomeView.m:

self.currentUser = [PFUser currentUser];
self.friendsRelation = [[PFUser currentUser] objectForKey:@"friends"];
NSLog(@"%@", self.currentUser);
NSLog(@"%@", self.friendsRelation);

After login, my HomeView log this:

2016-02-28 23:25:38.756 ChillN[4131:57119] <PFUser: 0x7fe0b3e4fc10, objectId: MZdPHaqByR, localId: (null)> {
    friends = "<PFRelation: 0x7fe0b3e4f900, 0x7fe0b3e4fc10.friends -> _User>";
    phone = "06 19 05 39 30";
    surname = a;
    username = a;
}
2016-02-28 23:25:38.756 ChillN[4131:57119] <PFRelation: 0x7fe0b3e4f900, 0x7fe0b3e4fc10.friends -> _User>

So everything's right.

Now with the mongolab db:

AppDelegate:

[Parse initializeWithConfiguration:[ParseClientConfiguration configurationWithBlock:^(id<ParseMutableClientConfiguration> configuration) {
    configuration.applicationId = @"xxxxxxx";
    configuration.clientKey = @"xxxxxxx";
    configuration.server = @"http://xxxxxxx.herokuapp.com/parse/";
}]];

After my login, my HomeView log this:

2016-02-28 23:29:21.785 ChillN[4281:59046] <PFUser: 0x7fa43c09ed20, objectId: MZdPHaqByR, localId: (null)> {
    phone = "06 19 05 39 27";
    surname = a;
    username = a;
}
2016-02-28 23:29:21.786 ChillN[4281:59046] (null)

For logging, I'm just using:

[PFUser logInWithUsernameInBackground:user
                                 password:password block:^(PFUser *user, NSError *error) {}];

Here are my db: Parse:

Heroku (MongoLab):

Here is a record for User from MongoLab:

{
    "_id": "MZdPHaqByR",
    "_perishable_token": "SHuhtWl0EoxxmNLOkspmp1vBF",
    "username": "a",
    "phone": "06 19 05 39 27",
    "surname": "a",
    "_session_token": "zO2drjzrO0To1q0JiohaL8f4v",
    "_hashed_password": "$2a$10$a7j5yB7uFDtv.YnHESVJgO9Io.nci8hbx7vngOo.FyzA3qBLxw38G",
    "_created_at": {
        "$date": "2016-02-28T21:55:48.548Z"
    },
    "_updated_at": {
        "$date": "2016-02-28T22:03:45.704Z"
    }
}

解决方案

It was just a mistake in my code, I had to replace:

self.friendsRelation = [[PFUser currentUser] objectForKey:@"friends"];

to

self.friendsRelation = [[PFUser currentUser] relationForKey:@"friends"];

Hope that will help another one. Cheers!

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