Having trouble with new field in entity (unrecognized selector error) - ios

Question

I'm trying to add a field to an entity and whenever I try to access the new field I get
unrecognized selector sent to instance...
Everything else about the entity works. I'm able to add objects and I'm able to assign values to other fields in the object, but not to the new objects.
Of note, I also deleted the DerivedData directory and I deleted the .mom/.momd files to make sure the tables are being built correctly.
Any thoughts?
Locations.h
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
#class Games, Players;
#interface Locations : NSManagedObject
#property (nonatomic, retain) NSNumber * defaultLoc;
#property (nonatomic, retain) NSString * locationAddr1;
#property (nonatomic, retain) NSString * locationAddr2;
#property (nonatomic, retain) NSString * locationCity;
#property (nonatomic, retain) NSNumber * locationID;
#property (nonatomic, retain) NSString * locationName;
#property (nonatomic, retain) NSString * locationState;
#property (nonatomic, retain) NSString * locationZip;
#property (nonatomic, retain) NSNumber * numberOfCourts;
#property (nonatomic, retain) NSNumber * defLoc;
#property (nonatomic, retain) NSSet *haveGames;
#property (nonatomic, retain) NSSet *havePlayers;
#end
#interface Locations (CoreDataGeneratedAccessors)
- (void)addHaveGamesObject:(Games *)value;
- (void)removeHaveGamesObject:(Games *)value;
- (void)addHaveGames:(NSSet *)values;
- (void)removeHaveGames:(NSSet *)values;
- (void)addHavePlayersObject:(Players *)value;
- (void)removeHavePlayersObject:(Players *)value;
- (void)addHavePlayers:(NSSet *)values;
- (void)removeHavePlayers:(NSSet *)values;
#end
Locations.m
#import "Locations.h"
#import "Games.h"
#import "Players.h"
#implementation Locations
#dynamic defaultLoc;
#dynamic locationAddr1;
#dynamic locationAddr2;
#dynamic locationCity;
#dynamic locationID;
#dynamic locationName;
#dynamic locationState;
#dynamic locationZip;
#dynamic numberOfCourts;
#dynamic defLoc;
#dynamic haveGames;
#dynamic havePlayers;
#end
Note: defLoc and defaultLoc are two fields that I added. These are the ones giving me problems.
Executing code:
- (IBAction)updateLocation:(UIStoryboardSegue *)segue
{
// If it is not "Edit" it is an "Add" and we need to insert a newobject.
if ([segueType1 isEqualToString:#"Add"])
{
NSManagedObjectContext *context = [[self fetchedResultsController] managedObjectContext];
location = [NSEntityDescription insertNewObjectForEntityForName:#"Locations" inManagedObjectContext:context];
}
location.locationName = lName;
location.locationAddr1 = lAddr1;
location.locationAddr2 = lAddr2;
location.locationCity = lCity;
location.locationState = lState;
location.locationZip = lZip;
location.numberOfCourts = lNumCourts;
location.defLoc = lNumCourts;
// location.defaultLoc = [NSNumber numberWithInt:1];
// DLog(#"ldefaultLocation = %#",ldefaultLocation);
location.defaultLoc = ldefaultLocation;
segueType1 = #"Add"; // Always reset back to Add so that segues work right
}
location.defLoc above is the command that gives the error...All other location statements work fine.

Answer 1

That can happen when you don't declare the new attribute in your NSManagedObject child. As soon as you add a new field in the core data model, remember to add the right property to the NSManagedObject class and declare it #dynamic in the implementation.