Re: [Zope-dev] Custom class: cut,copy,rename?
On Mon, 2004-03-01 at 13:59, Ian Beatty wrote:
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?
as i recall the default copy paste behavior is a bit arcane in that the
verify tries to assert the object is indeed a registered meta_type (ie
reg. in initialize) so that it can verify permissions, see cmfcore
folder code for an example of making a custom container which works
around this (basically just override _verifyObjectPaste), or just
register the objects.
cheers,
-kapil
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Re: [Zope-dev] Custom class: cut,copy,rename?
Ian Beatty wrote: OFS.ObjectManager.ObjectManager Products.ZCatalog.CatalogPathAwareness.CatalogAware OFS.PropertyManager.PropertyManager OFS.SimpleItem.SimpleItem I'm pretty sure all you should actually need is: OFS.ObjectManager.ObjectManager Products.ZCatalog.CatalogPathAwareness.CatalogAware OFS.SimpleItem.Item (subclassed by OFS.SimpleItem.SimpleItem) is supposed to provide cut-and-paste functionality. So, how might I be breaking it? Show us some error messages, exceptions, types ,values and tracebacks adn amaybe we can help ;-) cheers, Chris ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
Re: [Zope-dev] Custom class: cut,copy,rename?
Ian Beatty wrote: 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? The order of the parent classes matters. Ie. Some methods are defined in SimpleItem that returns None. Clipped from the source:: # This keeps simple items from acquiring their parents # objectValues, etc., when used in simple tree tags. def objectValues(self, spec=None): return () objectIds=objectItems=objectValues So if SimpleItem is before ObjectManager the traversal order of the parent objects will make shure that you get the wrong methods :-( So this will *not* work: class aSimpleItem( CatalogAware, PropertyManager, SimpleItem.SimpleItem, ObjectManager): This order works: class aSimpleItem( CatalogAware, PropertyManager, SimpleItem): class anObjectManager( ObjectManager, aSimpleItem): regards Max M ___ Zope-Dev maillist - [EMAIL PROTECTED] http://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope )
