[Zope-dev] Custom class: cut,copy,rename?

Ian Beatty beatty at physics.umass.edu
Mon Mar 1 13:59:16 EST 2004


Greetings.

I've created a package in Python with some basic classes. They work in the
ZMI, except for the fact that the ZMI paste and rename functionality fails
with the message "The object xxx does not support this operation."

I've dug into the source code for standard types ('OFS.Folder',
'OFS.SimpleItem', etc.) and discovered some tantalizing bits (such as
'manage_renameObject' in 'OFS.CopySupport'), but I can't figure out how to
put it together to make my classes renameable and pasteable. I'm rather
surprised that behavior doesn't come automatically when inheriting from the
standard base classes.

One of my folderish classes subclasses the following bases:

    OFS.ObjectManager.ObjectManager
    Products.ZCatalog.CatalogPathAwareness.CatalogAware
    OFS.PropertyManager.PropertyManager
    OFS.SimpleItem.SimpleItem

Am I not inheriting from the proper set of base classes? Is there an easier
way? According to the ZDG (2.4 edition, vs. my Zope 2.7),
OFS.SimpleItem.Item (subclassed by OFS.SimpleItem.SimpleItem) is supposed to
provide cut-and-paste functionality. So, how might I be breaking it?

Bewildered,

..Ian

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Dr. Ian Beatty                           beatty at physics.umass.edu
Physics Education Research Group              voice: 413.545.9483
Department of Physics                           fax: 413.545.4884
Univ. of Massachusetts              AIM: (available upon request)
Amherst, MA 01003-4525 USA       http://umperg.physics.umass.edu/
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