Date: Tue, 16 May 2000 15:03:26 +0200 From: Marco Mariani <m.mariani@imola.nettuno.it> To: zope@zope.org Subject: [Zope] I _still_ need help on ZClasses and manage_clone

I'm banging my head on the wall for this.

I have a ZClass which derives from Folder, and has permissons for "Documents, Images and Files".

When I try to use manage_clone within an instance of it, I get

Error Type: AttributeError Error Value: _getProducts

[...]

Traceback (innermost last): File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 214, in publish_module File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 179, in publish File /usr/lib/zope/lib/python/Zope/__init__.py, line 202, in zpublisher_exception_hook (Object: ElementWithAttributes) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 165, in publish File /usr/lib/zope/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: PuploadMenu) File /usr/lib/zope/lib/python/ZPublisher/Publish.py, line 102, in call_object (Object: PuploadMenu) File /usr/lib/zope/lib/python/Products/ExternalMethod/ExternalMethod.py, line 248, in __call__ (Object: PuploadMenu) (Info: ((<Folder instance at 85b2328>, <h3>form</h3> [...]

File /var/lib/zope/Extensions/upload.py, line 143, in uploadMenu (Object: ElementWithAttributes) File /var/lib/zope/Extensions/upload.py, line 70, in NewArticolo (Object: ElementWithAttributes) File /usr/lib/zope/lib/python/OFS/CopySupport.py, line 284, in manage_clone (Object: ElementWithAttributes) File /usr/lib/zope/lib/python/OFS/CopySupport.py, line 353, in _verifyObjectPaste (Object: ElementWithAttributes) File /usr/lib/zope/lib/python/App/FactoryDispatcher.py, line 96, in __getitem__ AttributeError: (see above)

This is the relevant section of upload.py, where "gruppo" is a list of Image names.

"self" is the folder containing 'upload', which is a folder full of Images.

def NewArticolo(self,REQUEST,RESPONSE): r='' gruppo = REQUEST.form.get('gruppo')

if gruppo: next_art = self['prossimo_articolo'] # property of folder 'foto' upload=self.upload.this() id = 'art_%s'%next_art

newob = upload.Control_Panel.Products.MArticolo.ArtClass(id) newob.id = id # newob.propertysheets.art_info.manage_changeProperties(REQUEST) upload._setObject(id,newob)

r=r+ 'Articolo %s aggiunto.<BR>' % next_art next_art = next_art + 1 next_foto = self['prossima_foto']

for i in gruppo: # upload.manage_clone(upload[i],'foto_%s'%next_foto) # ^^^^^^^ this works

newob.manage_clone(upload[i],'foto_%s'%next_foto) ^^^^^^^ this doesn't

newob["foto_%s"%next_foto].manage_changeProperties({'filename': i}) r=r+ 'Foto %s aggiunta.<BR>' % i next_foto = next_foto + 1

self.manage_changeProperties({'prossimo_articolo': next_art}) self.manage_changeProperties({'prossima_foto': next_foto}) return r

Thank you for reading this far.

I think a lot of people, myself included, have had problems trying to clone objects inside of new ZClass instances. This sounds like the problem you're having. I haven't heard of a simple solution to the problem. John Morton talked about a possible workaround in a previous posting. Don't know if this will work for you, though. Begin previous post by John Morton, March 28 ------------------------------------------------------------- Tres Seaver writes:

...

Take three. I've solved the problem for all cases by having the ZClass add method redirect to a method that copies the default methods into the new ZClass instance, then redirects back to the management screen.

Might have to write a howto for this one.

I'm glad you found a workaround. Just offhand, did you try to just call that additional method, before redirecting to it? I have seen a couple of cases where I refactored code like that into a new method and then things got simpler.

Tried that - I in-lined it on the list for brevity's sake. The problem is definitely with manage_clone not wanting to be used on a thing inside the transaction that creates that thing. ------------------------------------------------------------- End previous post