Delete object Coredata
10,639
Well, it's possibly that you've got your objects, context and threads mixed up. NSManagedObjectContext
isn't thread safe. To delete an object from a context, you need to have fetched the object "into" the context first, and I guess your managed object was fetched by a different MOC. Without seeing more code I can't tell.
However, there is a relatively easy fix. In your for loop, do this instead
for (ErgTimes *ergTimes in time){
NSMutableArray *temp = [[NSMutableArray alloc] initWithObjects:ergTimes.Twok, nil];
NSManagedObject *eventToDelete = [managedObjectContext objectWithID:[[temp objectAtIndex:0] objectID]];
[managedObjectContext deleteObject:eventToDelete];
}
What this does is get the object in the MOC your currently using using its objectID which is thread-safe.
Comments
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James Dunay almost 2 years
I have a project that uses coredata and i am attmepting to delete from what i have stored. But i keep getting this error.
An NSManagedObjectContext cannot delete objects in other contexts.
I looked at what apple had to say and from what i can tell i have it correct, but something is still off. Any suggestions? Thx!
for (UserNumber *info in pinNumberArray) { NSSet *time = [[NSSet alloc] initWithSet:info.Times]; for (ErgTimes *ergTimes in time){ NSMutableArray *temp = [[NSMutableArray alloc] initWithObjects:ergTimes.Twok, nil]; NSManagedObject *eventToDelete = [temp objectAtIndex:0]; [managedObjectContext deleteObject:eventToDelete]; } }