[Zope3-Users] Own packages corrupts ZODB

[Florian Lindner]

My VERY stupid fault. I derived the interface from IContained, not 
IContainer.
Now everything works.


Florian Lindner schrieb:
> Hello,
> I've created a new package which causes a system error very time the ZMI 
> folder listing of the folder which contains an instance of the object is 
> listed:
> 
> The traceback is:
> 
> Traceback (innermost last):
>   Module zope.publisher.publish, line 138, in publish
>     result = publication.callObject(request, object)
>   Module zope.app.publication.zopepublication, line 153, in callObject
>     return mapply(ob, request.getPositionalArguments(), request)
>   Module zope.publisher.publish, line 113, in mapply
>     return debug_call(object, args)
>    - __traceback_info__: <bound method 
> ReadContainerXmlObjectView.singleBranchTree of 
> <zope.app.publisher.browser.viewmeta.ReadContainerXmlObjectView object 
> at 0x00E2AEB0>>
>   Module zope.publisher.publish, line 119, in debug_call
>     return object(*args)
>   Module zope.app.rotterdam.xmlobject, line 133, in singleBranchTree
>     name, len(subItem), iconUrl))
> ForbiddenAttribute: ('__len__', <CS.centershock.centershock.Centershock 
> object at 0x01212EF0>)
> 
> 
> I have no idea what can cause this.
> The only special thing is that the interface has no members:
> 
> 
> from zope.interface import Interface
> from zope.app.container.interfaces import IContained
> 
> class ICentershock(IContained):
>     """Main component"""
> 
>     def __setitem__(name, object):
>         """Add a ICentershock object."""
> 
> 
> The registration:
> 
> 
> 
> <configure xmlns="http://namespaces.zope.org/zope">
>     <include package=".browser" />
>     
>     <interface interface=".interfaces.ICentershock" 
> type="zope.app.content.interfaces.IContentType" />
>     <content class=".centershock.Centershock">
>         <implements 
> interface="zope.app.annotation.interfaces.IAttributeAnnotatable" />
>         <implements 
> interface="zope.app.container.interfaces.IContentContainer" />
>         <factory description="centershock.net"/>
>         <require permission="zope.Public" 
> interface=".interfaces.ICentershock" />
>         <require permission="zope.Public" 
> set_schema=".interfaces.ICentershock" />
>     </content>
>     
> </configure>
> 
> the package browser registration:
> 
> <configure xmlns="http://namespaces.zope.org/browser">
>     <addMenuItem
>         class="..centershock.Centershock"
>         title="centershock.net"
>         description="A centershock.net object"
>         permission="zope.ManageContent"
>     />
> 
>     <editform
>         schema="..interfaces.ICentershock"
>         label="Change centershock.net information"
>         name="edit.html"
>         permission="zope.ManageContent"
>         menu="zmi_views" title="Edit"
>     />
> 
>     <containerViews
>         for="..interfaces.ICentershock"
>         index="zope.Public"
>         contents="zope.Public"
>         add="zope.ManageContent"
>     />
> </configure>
> 
> 
> what is wrong with that?
> 
> Thanks,
> 
> Florian
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