[Rubycocoa-talk] RubyCocoa, CoreData, & NSPersistentDocumentTutorial

[Rupert B. <rup...@li...>]

Hi,

I am using today's latest CVS version of RubyCocoa, and trying  
coredata and kvc_depends_on : great !
I am trying to "translate" the NSPersistentDocumentTutorial into Ruby :
     http://developer.apple.com/documentation/Cocoa/Conceptual/ 
NSPersistentDocumentTutorial

I have got to chapter 3 (creating the custome Employee class) : this  
works with Employee.rb, I have even got fullNameAndID working,  
dynamically computed from firstName and lastName, and displayed in  
the GUI.
However, I do not seem to be able to connect firstName in the GUI  
with the model in Employee.rb; ditto for lastName. This is my  
Employee class :

class Employee < OSX::NSManagedObject
     include OSX

     attr_accessor :firstName
     attr_accessor :lastName

     kvc_accessor :lastName, :firstName
     kvc_depends_on([ :lastName, :firstName], :fullNameAndID)

     def initialize
         @firstName = "MyFirst"
         @lastName  = "MyLast"
     end

     def fullNameAndID
         return OSX::NSString.stringWithString(@lastName + ", " +  
@firstName)
     end

end

What am I missing ?  Is there something not obvious which should be  
done, considering that this tutorial uses bindings (of course) ad  
core data (including a data model with entities) ?

Thanks for any help,
Rup