How do you populate a NSArrayController with CoreData rows programmatically?
- by Andrew McCloud
After several hours/days of searching and diving into example projects i've concluded that I need to just ask. If I bind the assetsView (IKImageBrowserView) directly to an IB instance of NSArrayController everything works just fine.
- (void) awakeFromNib
{
library = [[NSArrayController alloc] init];
[library setManagedObjectContext:[[NSApp delegate] managedObjectContext]];
[library setEntityName:@"Asset"];
NSLog(@"%@", [library arrangedObjects]);
NSLog(@"%@", [library content]);
[assetsView setDataSource:library];
[assetsView reloadData];
}
Both NSLogs are empty. I know i'm missing something... I just don't know what. The goal is to eventually allow multiple instances of this view's "library" filtered programmatically with a predicate. For now i'm just trying to have it display all of the rows for the "Asset" entity.
Addition: If I create the NSArrayController in IB and then try to log [library arrangedObjects] or manually set the data source for assetsView I get the same empty results. Like I said earlier, if I bind library.arrangedObjects to assetsView.content (IKImageBrowserView) in IB - with same managed object context and same entity name set by IB - everything works as expected.
- (void) awakeFromNib
{
// library = [[NSArrayController alloc] init];
// [library setManagedObjectContext:[[NSApp delegate] managedObjectContext]];
// [library setEntityName:@"Asset"];
NSLog(@"%@", [library arrangedObjects]);
NSLog(@"%@", [library content]);
[assetsView setDataSource:library];
[assetsView reloadData];
}
