Core Data - Need an Observer but where and how to implement
Core Data - Need an Observer but where and how to implement
- Subject: Core Data - Need an Observer but where and how to implement
- From: Andreas Grauel <email@hidden>
- Date: Tue, 2 Feb 2010 20:54:04 +0100
Hello,
following situation. I have two Entities - Person and Event - both are with
a many to many relationship, because a person can have more events and a
event can have more persons. After I have added a few Persons to an Event
I'd like to display them on in a Table. But how? I tried a Binding with
Events - selection - person.firstName but then always comes this Error.
2010-02-02 20:37:39.948 Kegeln[4128:a0f] [<_NSFaultingMutableSet
0x100227180> addObserver:forKeyPath:options:context:] is not supported. Key
path: firstName
*
*
I also have tried some other things but cannot figure it out. I have also
tried to add an Observer but wasn't able to. I have tried to add an Observer
to the EventArrayController, but didn't work or maybe i did it wrong. What
can i do? Please help.
Regards,
Andreas
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