Re: NSTreeNode -representedObject not KVC-Compliant
Re: NSTreeNode -representedObject not KVC-Compliant
- Subject: Re: NSTreeNode -representedObject not KVC-Compliant
- From: Matt Brewer <email@hidden>
- Date: Mon, 24 Dec 2007 03:38:41 -0500
Awesome, I'll be looking up on that. I wasn't actually using Core
Data, but examples are examples!
Thanks again
On Dec 24, 2007, at 3:34 AM, Scott Anguish wrote:
On Dec 24, 2007, at 3:15 AM, Matt Brewer wrote:
Seems like I had missed this before, was just reading up on
nscontroller and bindings and such, but if I added "self" as the
model key path after "selection" as the controller key on the
second controller, all works just fine. I don't recall running
into this at all when using array controllers, but worked just fine
in this master-detail use of tree controllers.
http://www.cocoabuilder.com/archive/message/cocoa/2005/5/19/136419
Hope that helps someone else out there.
Incidentally, new sample code came out today for NSTreeController,
Core Data, and Bindings
http://developer.apple.com/samplecode/AbstractTree/index.html
AbstractTree is a Cocoa sample application that demonstrates how to
use Core Data and Bindings with NSTreeController. The data model is
intentionally simple and abstract - you can extend it to any
hierarchical model suitable for your problem domain. Likewise, the
user interface is minimal - just an outline view and buttons for
creating and removing nodes in the tree. In addition, the project
shows how to implement drag and drop for managing parent-child
relationships of the Core Data content.
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