When the user interface is automatically created by Interface
Builder following the instructions in the tutorial, 3 array
controllers are created, two of which are for employees. When I
used the NSTextFieldInspector for "Employee ID:" in the interface,
it was bound to Employee Array Controller 2 (NSArrayController)
rather than Employee Array Controller (NSArrayController).
Changing this to Employee Array Controller (NSArrayController),
that is, to the other NSArrayController that was automatically
created, fixed the problem.
Question: Is there something in the tutorial that I missed, or is
the tutorial deficient in not making explicit which
NSArrayController Employee ID is supposed to be bound to? Or is
the step I missed so obvious that someone more experienced with
Cocoa would be expected to know it and therefore it was left out of
the tutorial?
The tutorial does not require that the employee ID text field be
altered. Interface Builder creates the user interface automatically,
and I can't offhand think of any reason why it should make an
erroneous connection as you describe. What happens if you remove the
existing user interface elements and the controllers, and recreate
the UI from scratch (as described in <http://developer.apple.com/
documentation/Cocoa/Conceptual/NSPersistentDocumentTutorial/
02_CreatingProj/chapter_3_section_4.html>)?
mmalc
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