WeatherObservationis an entity in my data model, I am trying to establish its relation to another object (one to one) through which I passed through the navigation controller. He worked a few weeks ago. I changed some of the other objects in my model, restored the classes, and this relationship was set to NSManagedObject, and not to the class for another object. I tried re-creating this class several times, then just changing it to what it should have and adding the class to .h, #import in .m
I assume that the message [MANAGEDOBJECT count] is part of the main data magic, I do not call it anywhere in my code. I don’t know where to start, what to do, what can I post here to help get an answer? I tried:
weather.hiveObservation = hiveObs;
and
[weather setValue:hiveObs forKey:@"hiveObservation"]
both produce the same error if I comment on setting the relationship stored by the object in persistent storage. hiveObscreated in the old view, but not yet saved ... if that matters?
EDIT: After a thought and added information.
The ManagedObject I pass in was created, but was not saved before changing the views. It registers with zero values in the new view, but could this be a problem?
HiveObservation.h Master Data Files
import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class BoxObservation, HiveDetails, WeatherObservation;
@interface HiveObservation : NSManagedObject
...
@property (nonatomic, retain) HiveDetails *hiveDetail;
@property (nonatomic, retain) WeatherObservation *weatherObservation;
@end
@interface HiveObservation (CoreDataGeneratedAccessors)
- (void)addBoxObservationsObject:(BoxObservation *)value;
- (void)removeBoxObservationsObject:(BoxObservation *)value;
- (void)addBoxObservations:(NSSet *)values;
- (void)removeBoxObservations:(NSSet *)values;
@end
WeatherObservation.h
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class HiveObservation;
@interface WeatherObservation : NSManagedObject
@property (nonatomic, retain) NSNumber * windSpeed;
@property (nonatomic, retain) HiveObservation *hiveObservation;
@end
Console output:
2015-01-21 14:28:32.739 Hive Maps[5085:69277] -[WeatherObservation count]: unrecognized selector sent to instance 0x78ea3140
2015-01-21 14:28:32.743 Hive Maps[5085:69277] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[WeatherObservation count]: unrecognized selector sent to instance 0x78ea3140'
*** First throw call stack:
(
0 CoreFoundation 0x0157b946 __exceptionPreprocess + 182
1 libobjc.A.dylib 0x01204a97 objc_exception_throw + 44
2 CoreFoundation 0x015835c5 -[NSObject(NSObject) doesNotRecognizeSelector:] + 277
3 CoreFoundation 0x014cc3e7 ___forwarding___ + 1047
4 CoreFoundation 0x014cbfae _CF_forwarding_prep_0 + 14
5 CoreData 0x00b2a8cc -[NSSQLCore _knownOrderKeyForObject:from:inverseToMany:] + 204
6 CoreData 0x00b2ae53 -[NSSQLCore _populateRow:fromObject:timestamp:inserted:] + 1043
7 CoreData 0x00a52e73 -[NSSQLCore prepareForSave:] + 1091
8 CoreData 0x00a52174 -[NSSQLCore saveChanges:] + 340
9 CoreData 0x00a1bfee -[NSSQLCore executeRequest:withContext:error:] + 638
10 CoreData 0x00b15af4 __65-[NSPersistentStoreCoordinator executeRequest:withContext:error:]_block_invoke + 5380
11 CoreData 0x00b1ee9c gutsOfBlockToNSPersistentStoreCoordinatorPerform + 188
12 libdispatch.dylib 0x02d00e2f _dispatch_client_callout + 14
13 libdispatch.dylib 0x02ce5505 _dispatch_barrier_sync_f_invoke + 144
14 libdispatch.dylib 0x02ce4c37 dispatch_barrier_sync_f + 105
15 CoreData 0x00b0f7e7 _perform + 183
16 CoreData 0x00a1bb1b -[NSPersistentStoreCoordinator executeRequest:withContext:error:] + 459
17 CoreData 0x00a4b1d9 -[NSManagedObjectContext save:] + 1529
18 Hive Maps 0x00018a6d -[GetWeatherTableViewController saveWeatherData:] + 3133
19 libobjc.A.dylib 0x0121a7cd -[NSObject performSelector:withObject:withObject:] + 84
20 UIKit 0x0193023d -[UIApplication sendAction:to:from:forEvent:] + 99
21 UIKit 0x01ca0840 -[UIBarButtonItem(UIInternal) _sendAction:withEvent:] + 139
22 libobjc.A.dylib 0x0121a7cd -[NSObject performSelector:withObject:withObject:] + 84
23 UIKit 0x0193023d -[UIApplication sendAction:to:from:forEvent:] + 99
24 UIKit 0x019301cf -[UIApplication sendAction:toTarget:fromSender:forEvent:] + 64
25 UIKit 0x01a63e86 -[UIControl sendAction:to:forEvent:] + 69
26 UIKit 0x01a642a3 -[UIControl _sendActionsForEvents:withEvent:] + 598
27 UIKit 0x01a6350d -[UIControl touchesEnded:withEvent:] + 660
28 UIKit 0x0198060a -[UIWindow _sendTouchesForEvent:] + 874
29 UIKit 0x019810e5 -[UIWindow sendEvent:] + 791
30 UIKit 0x01946549 -[UIApplication sendEvent:] + 242
31 UIKit 0x0195637e _UIApplicationHandleEventFromQueueEvent + 20690
32 UIKit 0x0192ab19 _UIApplicationHandleEventQueue + 2206
33 CoreFoundation 0x0149f1df __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 15
34 CoreFoundation 0x01494ced __CFRunLoopDoSources0 + 253
35 CoreFoundation 0x01494248 __CFRunLoopRun + 952
36 CoreFoundation 0x01493bcb CFRunLoopRunSpecific + 443
37 CoreFoundation 0x014939fb CFRunLoopRunInMode + 123
38 GraphicsServices 0x04d0124f GSEventRunModal + 192
39 GraphicsServices 0x04d0108c GSEventRun + 104
40 UIKit 0x0192e8b6 UIApplicationMain + 1526
41 Hive Maps 0x0001967d main + 141
42 libdyld.dylib 0x02d2cac9 start + 1
)
libc++abi.dylib: terminating with uncaught exception of type NSException
, , :
weather.hiveObservation = hiveObs;
NSError *error = nil;
if (![_managedObjectContext save:&error]) {
NSLog(@"SAVE ERROR: %@",error);
}
,