The problem turned out to be that
setKeys:triggerChangeNotificationsForDependentKey: was not actually
causing my derived variable changes to be broadcast. I can't figure
out why, since the exact same mechanism works in other parts of my code.
The fix was to observe the independent attributes and call the will/
didChange methods for the dependent key when the independent
attributes change.
I'd still like to know why
setKeys:triggerChangeNotificationsForDependentKey: doesn't work,
though. I am on OS 10.4.11.
Dave
On Nov 18, 2007, at 7:43 PM, Dave Fernandes wrote:
- I have an NSTextField bound to an NSObjectController's
selection.myValue
- The NSObjectController is set up to use my derived
NSManagedObject class.
- The myValue attribute of my entity is transient
When I type into the NSTextField, my managed object's setMyValue
method gets called, as it should.
However, the myValue method doesn't get called. I thought the way
MVC-bindings worked was that there was supposed to be a round-trip
-- call the setter, then the getter.
The only time the myValue method is called is when I am loading the
window.
Is there any way to trouble-shoot this?
Dave
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