array controllers and key paths
array controllers and key paths
- Subject: array controllers and key paths
- From: Amy Heavey <email@hidden>
- Date: Tue, 1 Feb 2011 07:33:24 +0000
Hi,
I've got 3 entities, Event, CustomerOrders and CustomerORderITems.
Events has a to many relationship (eventOrders) to CustomerOrders
CustomerOrders has a to many relationship (customerOrderItems) to
CustomerOrderItems
I'd like to be able to list all of the CustomerOrderItems for a
selected event in a table.
I think I need to create a new array controller (eventOrderItems) but
how do I bind the content? I've tried various array/set key paths but
none have worked so far. Is this possible?
I've got an array controller called eventOrders which is bound to the
Events.selection so I thought I could bind eventOrderItems to
eventOrders.arrangedObjects keypath customerOrderItems
If I try to bind the content set I get an error saying something like
cannot create content set, try using content array,
Cannot create NSSet from object (
) of class NSCFArray - consider using contentArray binding instead of
contentSet binding
but if I try that I get another error
[<_NSFaultingMutableSet 0x1a0a90>
addObserver:forKeyPath:options:context:] is not supported. Key path:
orderItemProduct.productTitle
Many Thanks
Amy
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