Hello, I'm new to Zope, and using Zope 3.3. I have managed to get a
simple site running.
I am having trouble getting the web interface to let me edit an object
that contains a list, where the type of values in the list, is an
interface that also holds a list. I cant get this list inside a list
setup to work correctly.
In my example, I have a Person object that contains a list of PersonInfo
objects, where each PersonInfo contains a list of names.
When I enter the view for Person (based on EditForm), it displays an
edit form as I would expect. However, when I try to add a PersonInfo to
the list via the interface, an exception is raised:
TypeError: iteration over non-sequence
(The full traceback is over 6 pages long, so I wont post it, but it
does mention sequencewidget many times).
I've tried some variations to narrow down the problem:
*If I change PersonInfo to hold just a string instead of a list, it
*If I change Person to hold just a single PersonInfo instead of a list,
* Therefore, it seems like my Zope site is set up OK, but for some
reason Lists of objects with Lists raise an exception.
Am I missing something? Maybe I have to write some custom widget to get
around this? Is this possibly a known problem?
********** People.py *****************
names = schema.List(
ID = schema.TextLine(
description=u'Persons ID code')
the_list = schema.List(
self.names = persistent.list.PersistentList()
return ObjectWidget(context, request, PersonInfo)
ID = "1-2-3"
self.the_list = persistent.list.PersistentList()
form_fields = form.Fields(IPerson)
form_fields = form.Fields(IPersonInfo)
********** end People.py *****************
configure.zcml doesnt do anything unusual, it sets up the views to use
my custom widgets and sets up the edit views and security.
Regards and thanks for your help!
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