[Pyobjc-dev] depythonifying 'unsigned int', got 'NoneType'

[Michael B. <mi...@je...>]

Hi, all!

I'm working through the exercises in 'Cocoa Programming for Mac OS X'  
and well, I'm stumped.  It seems that whenever  
self.employees.insertObject_atIndex_(p, index) is called by the  
NSArrayController (or at least that's how I think it works), it isn't  
passing the index value.  Rather, it is passing None.    The error  
displayed is "depythonifying 'unsigned int', got 'NoneType'".

If I assign index an integer value,  a record will be inserted but of  
course it has an invalid index.  Can anyone point out what I'm doing  
wrong? (feel free to point out anything else I'm doing here that's  
dumb, too)

Also, I keep getting the following error in the log even though  
setEmployees_() is not returning anything:

KVO autonotifying only supports -set<Key>: methods that return void.   
Autonotifying will not be done for invocations of -[RaiseManDocument  
setEmployees:].

Any ideas?  I've tried 'return None' with the same results...

	def init(self):
		self = super(RaiseManDocument, self).init()
		self.path = None
		self.employees = NSMutableArray.alloc().init()
		return self
		
	def setEmployees_(self, xarray):
		self.employees = xarray
		
	def insertObject_inEmployeesAtIndex_(self, p, index):
		undo = self.undoManager()
		 
undo.prepareWithInvocationTarget_(self).removeObjectFromEmployeesAtIndex 
_(index)
		
		if not undo.isUndoing():
			undo.setActionName_(u"Insert Person")
			
		self.employees.insertObject_atIndex_(p, index)
		
	def removeObjectFromEmployeesAtIndex_(self, index):
		p = employees.objectAtIndex_(index)
		undo = self.undoManager()
		 
undo.prepareWithInvocationTarget_(self).insertObject_inEmployeesAtIndex_ 
(p, index)
		
		if not undo.isUndoing():
			undo.setActionName_(u"Delete Person")
			
		self.employees.removeObjectAtIndex_(index)