In my project I have two NSManageObjects
(Core Data generated). For both objects I have created a category with an instance method called containsToday
.
The problem is that only the method for the object ListElement
works. While calling the method for the object NamedRange
I get (same method as class method works):
-[NSManagedObject containsToday]: unrecognized selector sent to instance ...
Here is some code:
ListElement:
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@class ListImage, TLList;
@interface ListElement : NSManagedObject
@property (nonatomic, retain) NSString * agn;
@property (nonatomic, retain) NSString * aid;
@property (nonatomic, retain) NSString * date;
@property (nonatomic, retain) NSString * iid;
@property (nonatomic, retain) NSNumber * indx;
@property (nonatomic, retain) NSNumber * mark;
@property (nonatomic, retain) NSString * oid;
@property (nonatomic, retain) NSString * tcd;
@property (nonatomic, retain) NSString * ted;
@property (nonatomic, retain) NSNumber * cxl;
@property (nonatomic, retain) NSString * oti;
@property (nonatomic, retain) ListImage *listImage;
@property (nonatomic, retain) TLList *tlList;
@end
NamedRange:
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@interface NamedRange : NSManagedObject
@property (nonatomic, retain) NSString * tid;
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) NSString * sta;
@property (nonatomic, retain) NSString * end;
@end
ListElement (Additions):
#import "ListElement.h"
@interface ListElement (Additions)
- (BOOL) containsToday;
@end
NamedRange (Additions):
#import "NamedRange.h"
@interface NamedRange (Additions)
#warning TODO - why does this not work as instance method (for ListElement it works)?
+ (BOOL) containsToday:(NamedRange*)nr;
- (BOOL) containsToday;
@end