Re: struggling with binding, NSOutlineView, and NSTableView
Re: struggling with binding, NSOutlineView, and NSTableView
- Subject: Re: struggling with binding, NSOutlineView, and NSTableView
- From: David Owens <email@hidden>
- Date: Wed, 13 May 2009 17:41:12 -0700
Thanks so much! I knew it was something stupid that I was doing on my
end and conceptually it seemed like the right structure.
On May 13, 2009, at 3:15 PM, Kyle Sluder wrote:
On Wed, May 13, 2009 at 5:31 PM, David Owens <email@hidden> wrote:
I attached a sample project that repros the issue that I'm seeing.
It is
nearly the same as to what I have in my real app.
You don't have a breakpoint on objc_exception_throw. That would make
it more obvious that something was going on, since you also didn't see
this showing up in the console window:
2009-05-13 18:00:59.459 OutlineView[694:813] ***
-[_NSControllerObjectProxy fullPath]: unrecognized selector sent to
instance 0x155890
The line that's causing the exception is in your outline view data
source's -outlineView:objectValueForTableColumn:byItem:
implementation:
return (item == nil) ? [[groups selection] fullPath] : (id)[item
relativePath];
Specifically, your use of [groups selection] is the problem.
-selection is documented to return a KVC-compliant proxy object, not
actual instances of your model objects. For that, you want
-selectedObjects.
--Kyle Sluder
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