Fields missing when saving Parse PFInstallation object - ios

Question

I'm saving a PFInstallation object in application:didFinishLaunchingWithOptions -- I am not asking the user for push permissions or anything to do with a deviceToken -- and I'm finding many of the standard fields are being left unpopulated, including:
appIdentifier
appVersion
appName
badge
parseVersion
timeZone
(These columns are undefined in the data browser, and do not show on an NSLog of the PFInstallation object.)
deviceType does get populated
I am grabbing and successfully saving the deviceModel and deviceOS to two custom columns. But I'm a bit baffled as to why the above columns are being left undefined.
Here's the code:
[Parse setApplicationId:PARSE_APPID_DEV
clientKey:PARSE_CLIENTKEY_DEV];
// record device model and OS
NSString *model = [self getDeviceModelAndNumber]; // via sys/utsname.h
NSString *sysVersion = [[UIDevice currentDevice] systemVersion];
PFInstallation *currentInstallation = [PFInstallation currentInstallation];
PFUser *loggedUser = [PFUser currentUser];
if (loggedUser)
[currentInstallation setObject:loggedUser forKey:#"user"];
[currentInstallation setObject:model forKey:#"deviceModel"];
[currentInstallation setObject:sysVersion forKey:#"deviceOS"];
NSLog(#"installation: %#", currentInstallation);
[currentInstallation saveInBackground];
This project was created in Xcode 6. In a different project, created in Xcode 5, I am doing essentially the same thing, and the columns are being populated and saved correctly.
Anyone else encounter this? I've Googled for it quite a bit but not found a solution. Any help much appreciated.

Answer 1

After many experiments, it appears that (remarkably) changing the last line to
[currentInstallation saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
// some logging code here
}];
solves the problem. So I suppose I should file a bug with Parse. (In fact, there's already one open: https://developers.facebook.com/bugs/712949858787516/ )

Answer 2

This completely works perfect for me:
(void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
// Store the deviceToken in the current installation and save it to Parse.
PFInstallation *currentInstallation = [PFInstallation currentInstallation];
[currentInstallation setDeviceTokenFromData:deviceToken];
currentInstallation.channels = #[ #"YOU_CHANNEL_PREFERENCE" ];
NSLog(#"currentInstallation %#", currentInstallation);
// record device model and OS
NSString *model = [[UIDevice currentDevice] model]; // deviceModel
NSString *osVersion = [[UIDevice currentDevice] systemVersion]; // osVersion
NSString *pushType = #"APN"; // pushType
NSString *deviceName = [[UIDevice currentDevice] name]; // deviceName
[currentInstallation setObject:model forKey:#"deviceModel"];
[currentInstallation setObject:osVersion forKey:#"osVersion"];
[currentInstallation setObject:pushType forKey:#"pushType"];
[currentInstallation setObject:deviceName forKey:#"deviceName"];
NSLog(#"installation: %#", currentInstallation);
[currentInstallation saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
// some logging code here
NSLog(#"works");
}];
}