NSViewController Binding Problem continued
NSViewController Binding Problem continued
- Subject: NSViewController Binding Problem continued
- From: Ivy Feraco <email@hidden>
- Date: Thu, 17 Jul 2008 11:53:32 -0400
There was a previous post back in April about a problem with binding
to the representedObject in NSViewController.
When instantiating the view controller, I set the represented object
to an NSArrayController.
vc = [[MyViewController alloc] initWithNibName:@"newView" bundle:nil];
[vc setRepresentedObject:arrayController];
When setting the bindings in the nib file, I make the File's Owner
MyViewController class, then try to bind columns of NSTableView to the
File's Owner using a path like
representedObject.arrangedObjects.displayText.
This would not work, even though the array controller does contain data.
A previous post brought up the exact same issue, and he worked around
it by using the awakefromNib method to bind the table to the
representedObject's arrangedObjects in code. I did something similar
using the windowDidLoad method.
So I want to reopen the issue - Does anyone have any insight into why
it doesn't work in IB?
It seems like it should, and that this was an intended benefit of
having a representedObject for the ViewController, and Apple's
NSVIewController documentation seems to confirm this:
"Declaring a generic representedObject property, to make it easy to
establish bindings in the nib to an object that isn't yet known at nib-
loading time or readily available to the code that's doing the nib
loading."
.... so, is it a Cocoa bug?
Thanks,
Ivy Feraco
UI Developer
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