Clear Persistent Store

gistfile1.m

-(void) resetPersistentStore
{
    NSURL* storeURL = [[self applicationDocumentsDirectory] URLByAppendingPathComponent:@"Model.sqlite"];
    
    NSPersistentStore* store = [_persistentStoreCoordinator persistentStoreForURL:storeURL];
    
    NSError* error = nil;
    [_persistentStoreCoordinator removePersistentStore:store error:&error];
    
    if (error) {
        NSLog(@"An error occured resetting the persistent store: %@",error.localizedDescription);
        return;
    }
 
    error = nil;
    [[NSFileManager defaultManager] removeItemAtURL:storeURL error:&error];
    if (error) {
        NSLog(@"An error occured removing the persistent store file: %@",error.localizedDescription);
        return;
    }
}

-(void) resetManagedObjectContext
{
    _managedObjectContext = nil;
}