[Rubycocoa-talk] Documentation for RubyCocoa on Leopard (with followup KVC/CoreData question).

[Rich W. <rw...@gm...>]

I'm fairly familiar with both Ruby and Cocoa, but I've never really  
played around with RubyCocoa before. I read the "Ruby and Python on  
Mac OS X" article from the Apple Developer Connection, and I'm looking  
for more in-depth documentation.

I'm using the version of RubyCocoa that comes with Leopard. It seems  
that the documentation is...missing?

I found the example code at /Developer/Examples/Ruby/RubyCocoa, but  
the documentation at /Developer/Documentation/RubyCocoa has only three  
smallish HTML files in Japanese.

ri doesn't seem to work for any OSX::* items.

How do I find/load the documentation into Leopard?

Are there any other good sources of RubyCocoa documentation?

In particular, I'm looking for some information on CoreData and Key  
Value compliance.

In short, I have a parent entity that has a to many relationship with  
a child entity. I currently display all the parents in a table. I  
would like to have one column bind to the child count for each parent.

In Cocoa, I would do this by giving the parent a transient "count"  
attribute. I would then make a subclass of NSManagedObject and have  
the parent use my subclass. In my subclass, I would create a - 
(int_32t)count method that returned the child count. This would get  
called, through the magic of KVC for my parent's count value.

In RubyCocoa I tried the same. But it didn't work. My sample code is  
below.

require 'osx/cocoa'

class ManagedParent < OSX::NSManagedObject

	def count()
		puts "Getting The Count"
		return 5
	end
end

Yes, yes. I know. I'm not actually getting the child count. But I  
wanted to get this, simpler version working before I tried to tackle  
the whole valueForKey_("child") mess.

When I run my code, I'm not getting 5 for the count, nor am I seeing  
"Getting The Count" in the console. How do I get this to work?

Thanks,

-Rich-