How to name Undo menu entries for Core Data add/remove items via bindings and NSArrayController?

Question

I have a NSTableView populated by a Core Data entity and Add Item / Remove Item buttons all wired with a NSArrayController and bindings in Interface Builder.

The Undo/Redo menu items can undo or redo the add / remove item actions.

But the menu entries are called only „Undo“ resp. „Redo“.
How can i name them like „Undo Add Item“, „Undo Remove Item“, etc.

(I am aware, something similar was asked before, but the accepted answers are either a single, now rotten link or the advice to subclass NSManagedObject and override a method that Apples documentation says about: "Important: You must not override this method.“)

Answer 1

Add a subclass of NSArrayController as a file in your project. In the xib, in the Identity Inspector of the array controller, change the Class from NSArrayController to your new subclass.

Override the - newObject method.

- (id)newObject
{
    id newObj = [super newObject];

    NSUndoManager *undoManager = [[[NSApp delegate] window] undoManager];
    [undoManager setActionName:@"Add Item"];

    return newObj;
}

Also the - remove:sender method.

- (void)remove:(id)sender
{
    [super remove:sender];

    NSUndoManager *undoManager = [[[NSApp delegate] window] undoManager];
    [undoManager setActionName:@"Remove Item"];
}