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Re: Model Key path for @sum of attribute of related entity

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Re: Model Key path for @sum of attribute of related entity

Subject: Re: Model Key path for @sum of attribute of related entity
From: Stefan <email@hidden>
Date: Tue, 8 Aug 2006 01:02:52 +0200

Forgot this: 'email@hidden' is the Model Key Path of a NSTableView column's value binding.

The mentioned messages appears only once, when I open the respective window first. The table gets not filled.

If I resize the window - and thus the embedded NSTableView - the
table updates is data fine. Each sum of all referenced 'tr' entities
gets calculated.

Am 07.08.2006 um 18:39 schrieb Stefan:

How to I get the sum of attribute 'val' of entity 'tr' related to entity 'ac'.
'ac' relates to 'tr' using the attribute 'ac2tr'.
Using 'arrangedObjects' for an 'ac' NSArrayController, I tried
	email@hidden
and got this error message:
[<_NSFaultingMutableSet 0x3c42e0> addObserver:forKeyPath:options:context:] is not supported. Key path: @sum. val


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