On 23 Feb 2010, at 9:17, mmalc Crawford wrote: > <http://developer.apple.com/mac/library/documentation/Cocoa/Conceptual/Core > Data/Articles/cdTroubleshooting.html#//apple_ref/doc/uid/TP40002320-SW3> > > Custom relationship set mutator methods are not invoked by an array controller > Problem: You have implemented set mutator methods for a relationship as > described > in "Custom To-Many Relationship Accessor Methods", and have bound > the contentSet binding of an NSArrayController instance to a relationship > (as illustrated by the Employees array controller in NSPersistentDocument > Core Data Tutorial), but the set mutator methods are not invoked when you add > objects to and remove objects from the array controller. > > Cause: This is a bug. > > Remedy: You can work around this by adding self to the contentSet binding's > key path. For example, instead of binding to [Department Object Controller > ].selection.employees, you would bind to [Department Object Controller].sel= > ection.self.employees. > > mmalc
Sob. I only wish that, when I'd read this very section several times, I hadn't thought "no that's not the problem I'm seeing, reckon I've got a live one" :-/ I've just put an update on bug 7677425, so that they know to mark it as a duplicate etc. As it happens, it turns out I didn't need custom accessors anyway and can do everything I need via KVO, but I couldn't see what I was doing wrong, so presumed I was misunderstanding it (a common cause, you'll be surprised to hear). Thanks folks, Ken Tail between his legs again... . . . . . . . . . . . . . . . . . . . . . . . . . . . Dr. Ken Tabb Mac & UNIX programmer Neural network & computer vision researcher University of Hertfordshire, UK _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
