Hi,
I use the the KGS of zope 3.5dev (I need Python 2.6 because of third
party code i integrate) and try to build a simple site and add a local
component registry using a subscriber. It looks like I missed something -
or I hit a bug in zope3.5dev. But before I report a bug I want to be sure
that it isnt my fault.
--- interfaces.py ------------------------------------------
class IMySite(IPossibleSite, IContainer):
"""My Site"""
--- site.py ------------------------------------------------
from zope.interface import implements
from zope.component import adapter
from zope.location.interfaces import ISite
from zope.site import LocalSiteManager
from zope.site.site import SiteManagerContainer
from zope.container.btree import BTreeContainer
from zope.container.interfaces import IObjectAddedEvent
from interfaces import IMySite
@adapter(IMailmanSite, IObjectAddedEvent)
def setSiteManagerWhenAdded(site, event):
if not ISite.providedBy(site):
site.setSiteManager(LocalSiteManager(site))
class MySite(SiteManagerContainer, BTreeContainer):
implements(IMySite)
--- configure.zcml ------------------------------------------
<configure
xmlns="http://namespaces.zope.org/zope";
xmlns:i18n="http://namespaces.zope.org/i18n";
i18n_domain="test"
>
<class class=".site.MySite">
<implements
interface="zope.annotation.interfaces.IAttributeAnnotatable"
/>
<allow attributes="getSiteManager" />
<require
permission="zope.ManageServices"
attributes="setSiteManager"
/>
<require
permission="zope.View"
interface="zope.app.container.interfaces.IReadContainer"
/>
<require
permission="zope.ManageContent"
interface="zope.app.container.intrfaces.IWriteContainer"
/>
</class>
<subscriber handler=".site.setSiteManagerWhenAdded" />
</configure>
-------------------------------------------------------------
Then I test this and run into a
>>> from site import MySite
>>> mysite = MySite()
>>> from zope.app.folder import rootFolder
>>> root = rootFolder()
>>> root[u'mysite'] = mysite
Failed example:
root[u'mysite'] = mysite
Exception raised:
Traceback (most recent call last):
File "/home/jensens/DEV/eggs/zope.testing-3.7.1-py2.6.egg/zope/
testing/doctest.py", line 1356, in __run
compileflags, 1) in test.globs
File "<doctest site.txt[7]>", line 1, in <module>
root[u'mysite'] = mysite
File "/home/jensens/DEV/eggs/zope.container-3.7.0-py2.6-linux-
i686.egg/zope/container/folder.py", line 98, in __setitem__
setitem(self, self.data.__setitem__, name, object)
File "/home/jensens/DEV/eggs/zope.container-3.7.0-py2.6-linux-
i686.egg/zope/container/contained.py", line 590, in setitem
notify(event)
File "/home/jensens/DEV/eggs/zope.event-3.4.0-py2.6.egg/zope/event/
__init__.py", line 23, in notify
subscriber(event)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/event.py", line 26, in dispatch
for ignored in zope.component.subscribers(event, None):
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/_api.py", line 131, in subscribers
return sitemanager.subscribers(objects, interface)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/registry.py", line 300, in subscribers
return self.adapters.subscribers(objects, provided)
File "/home/jensens/DEV/eggs/zope.interface-3.5.0-py2.6-linux-
i686.egg/zope/interface/adapter.py", line 535, in subscribers
subscription(*objects)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/event.py", line 33, in objectEventNotify
adapters = zope.component.subscribers((event.object, event), None)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/_api.py", line 131, in subscribers
return sitemanager.subscribers(objects, interface)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/registry.py", line 300, in subscribers
return self.adapters.subscribers(objects, provided)
File "/home/jensens/DEV/eggs/zope.interface-3.5.0-py2.6-linux-
i686.egg/zope/interface/adapter.py", line 535, in subscribers
subscription(*objects)
File "/home/jensens/DEV/eggs/zope.site-3.6.0-py2.6.egg/zope/site/
site.py", line 256, in changeSiteConfigurationAfterMove
site.getSiteManager().__bases__ = (next, )
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/registry.py", line 65, in <lambda>
lambda self, bases: self._setBases(bases),
File "/home/jensens/DEV/eggs/zope.site-3.6.0-py2.6.egg/zope/site/
site.py", line 161, in _setBases
super(LocalSiteManager, self)._setBases(bases)
File "/home/jensens/DEV/eggs/zope.component-3.5.1-py2.6.egg/zope/
component/registry.py", line 58, in _setBases
base.adapters for base in bases])
AttributeError: 'NoneType' object has no attribute 'adapters'
It calls the subscriber, adds the LocalSiteManager and then another event
happens and the subscriber zope.site.site.changeSiteConfigurationAfterMove
is called (line 251). Here is the code in there:
if event.newParent is not None:
next = _findNextSiteManager(site)
site.getSiteManager().__bases__
next is None here, so __bases__ has a None in the list.
Btw., the way the sitemanager is added is the same as described in
Phillip von Weiterhausens book.
Whats wrong?
thanks for hints!
--
Jens W. Klein, BlueDynamics Alliance, http://bluedynamics.com
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