Re: ViewControllers and window nibs
Re: ViewControllers and window nibs
On 6 May 2009, at 20:44, David Scheidt wrote:
I've got a Core Data app, using the NSPersistantDocument stuff.
There are three basic entity types. There is one, which I'll call
MainEntity, which has optional to-many relationships with the other
two, which I'll call A and B. In my main window, I have a
TableView, which has its columns bound to subclass of
NSArrayController (I'm overriding setFilterPredicate, and have some
convience methods). In the bottom part of the window, there is an
area that shows details of the particular MainEntity that's selected
in the table. there is another table column which shows either the
AEntities or BEntities that the selected MainEntity has (using an
ArrayController bound to MainEntityArrayController.selection. When
I have everything in one nib, and use a TabView to control which of
the A or B tables is shown, everything works just fine. For various
reasons, I want to replace the bottom section of the window with a
set of ViewControllers. I'm at a loss trying to figure out how
properly get a reference to the MainEntityArrayController. I've put
an instance of the ArrayController in my AView.xib, and set the
viewControllers mainEntityArrayController outlet in
windowControllerDidLoadNib. It gets the right value there, but the
change in selection doesn't seem to propagate into the other view.
what am I missing?
See the following for hints on binding across nibs.
http://homepage.mac.com/mmalc/CocoaExamples/controllers.html
It might be the case that you are setting up your bindings in IB to a
controller that is only specified after the nib is actually loaded.
If this is the case an alternative would be to specify the bindings
manual in -windowControllerDidLoadNib.
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Jonathan Mitchell
Central Conscious Unit
http://www.mugginsoft.com
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