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Re: Core Data: binding to a sum
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Re: Core Data: binding to a sum

  • Subject: Re: Core Data: binding to a sum
  • From: David Catmull <email@hidden>
  • Date: Wed, 7 Apr 2010 20:29:18 -0700
On Apr 7, 2010, at 10:19 AM, Keary Suska wrote:
> On Apr 7, 2010, at 9:14 AM, David Catmull wrote:
>> ..so I take it the particular NSSet variant used by Core Data doesn't support observing @sum. Or did I do that wrong?
>
> Yes, because you are trying to observe an element of a set. Same goes for arrays. Instead, add an array controller whose content is bound to "items", and bind to arrangedObjects->@sum.limit.


Thanks! I'm used to just thinking of array controllers as a way to feed table views. This did the trick.

David Catmull
email@hidden



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References: 
 >Core Data: binding to a sum (From: David Catmull <email@hidden>)
 >Re: Core Data: binding to a sum (From: Keary Suska <email@hidden>)

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