Tom, How about something like (untested): def GetParentNames(self): p=self.REQUEST.PARENTS[:] result=[] for obj in p: if obj.meta_type =='KBItem': result.append(obj.Title) return result HTH Phil phil.harris@zope.co.uk ----- Original Message ----- From: "Tom Deprez" <tom.deprez@uz.kuleuven.ac.be> To: <zope@zope.org> Sent: Tuesday, March 28, 2000 1:28 PM Subject: [Zope] External Method

I want to make an external method which does the following :

iterates over all the parents, if a parent is of a certain type, the title must be added to a list. However I don't know how to iterate over an object (ZClass) it's parents in Python/Zope. Can anybody help?

def GetParentNames(self): obj=self result=[] while obj.parent<>nil: <-- this is wrong obj=obj.parent <-- this is wrong if obj.meta_type=='KBItem': result.append(obj.Title) return result

Thanks in advance,

Tom.

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At 02:28 PM 3/28/00 +0200, you wrote:

I want to make an external method which does the following :

iterates over all the parents, if a parent is of a certain type, the title must be added to a list. However I don't know how to iterate over an object (ZClass) it's parents in Python/Zope. Can anybody help?

def GetParentNames(self): obj=self result=[] while obj.parent<>nil: <-- this is wrong obj=obj.parent <-- this is wrong if obj.meta_type=='KBItem': result.append(obj.Title) return result You should use a recursive mathod.

Write one method recursiveMethod: def recursiveMethod(obj): result = [] if obj.parent != None: result = recursiveMethod(obj) if obj.meta_type=='KBItem': result.append(obj.Title) return result Then call this method like: def GetParentNames(self): recursiveMethod(self) This code is untested, but should work. Regards, Stephan -- Stephan Richter - (901) 573-3308 - srichter@cbu.edu CBU - Physics & Chemistry; Framework Web - Web Design & Development PGP Key: 735E C61E 5C64 F430 4F9C 798E DCA2 07E3 E42B 5391