ios - Parse to Heroku migration (MongoLab): PFRelation issue -

i succeeded migrate parse parse-server mongolab. works expected, except when i'm logging pfuser mongolab, pfrelation object null.

in appdelegate, when run 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, 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 mongolab db:

appdelegate:

[parse initializewithconfiguration:[parseclientconfiguration configurationwithblock:^(id<parsemutableclientconfiguration> configuration) {     configuration.applicationid = @"xxxxxxx";     configuration.clientkey = @"xxxxxxx";     configuration.server = @"http://xxxxxxx.herokuapp.com/parse/"; }]]; 

after login, 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 using:

[pfuser loginwithusernameinbackground:user                                  password:password block:^(pfuser *user, nserror *error) {}]; 

here db: parse:

heroku (mongolab):

here record user 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"     } } 

it mistake in code, had replace:

self.friendsrelation = [[pfuser currentuser] objectforkey:@"friends"]; 

to

self.friendsrelation = [[pfuser currentuser] relationforkey:@"friends"]; 

hope one. cheers!