Hi All,
I'm now learning Core Data and was working through the persistent
document tutorial when I hit a snag.
After following the advice in the "Adpoting the Mediator Pattern" the
object controller now simply prepares its content and fetches the
department object.
I then tried in my windowControllerDidLoadNib method to use the array
controllers add and insertObject:... methods to populate the context
after all had loaded but got an exception when _NSStateMarker was sent
mutableCopyWithZone: which it didnt recognise. When using
performSelector:withObject:afterDelay:it worked fine.
I thought that since the add: method and its counterparts were
deferred until the next run loop anyway I wouldn't have to do this. Is
there something happening in the background when the controllers set
up their bindings to the context, meaning they're not set in when
windowControllerDidLoadNib: is called? I'm sure I read something in
the core data guide about run loops and performing after delays but I
may be wrong.
Thanks,
Jon
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