[Zope] IP Registering in a Poll: Attribute Error

[Avus]

Hi,

I'm trying to implement registering on IP addresses for the Poll product (from
the Product API tutorial), but Zope won't let me :-(

As a REQUEST object is passed to the vote() method in Poll.py, I can get the
remote IP via

remote_ip=REQUEST['REMOTE_ADDR']
 #and print it e.g. like
if REQUEST is not None:
	return MessageDialog(
		title='Vote Accepted',
		message='Yep. Your vote has been accepted, '+remote_ip,
		action =action,
 		)

However, I couldn't store the IP addresses in a list. If I try to use a list
like self.voted_ips=[] (like the self.votes={} dictionary already there) doing
a 
self.voted_ips.appent(remote_ip)
Zope will complain when I commit a vote:

--8<--
Sorry, an error occurred.

Traceback (innermost last):
  File lib/python/ZPublisher/Publish.py, line 877, in publish_module
  File lib/python/ZPublisher/Publish.py, line 590, in publish
    (Info: /test/testpoll/testpoll/vote)
  File /usr/home/me/zope/lib/python/Products/Poll/Poll.py, line 104, in vote
    (Object: RoleManager)
AttributeError: voted_ips
-->8--

Do I have to set special permissions somewhere? I'm working with Zope 1.10.3.

Thanks
Avus

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