[Zope] Problem with __before_publishing_traverse__

23 Mar 2007

      I have a product that looks like this::

class MyApp(Something):
   meta_type = 'x'
   def foobar(self):
       """ doc str """
       return "xxx"
   def __before_publishing_traverse__(self, object, request=None):
       print "HOUSTON"

   index_html = PageTemplateFile(...)

When I view objects of this class I'd expect Zope to call the 
__before_publishing_traverse__ hook and print HOUSTON, but it doesn't :(

I started fiddling with 
/usr/lib/zope-2.8.8/lib/python/ZPublisher/BaseRequest.py to try to see 
what's going on. BEFORE (around line 269)::

     while 1:
         bpth = getattr(object, '__before_publishing_traverse__', None)
         if bpth is not None:
             bpth(object, self)
         path = request.path = request['TraversalRequestNameStack']

AFTER::

     while 1:
         bpth = getattr(object, '__before_publishing_traverse__', None)
         if bpth is not None:
             bpth(object, self)
             if object.__class__.__name__ == 'MyApp':
                 print object.foobar()
                 print object.foobar
                 print object.__before_publishing_traverse__(object, self)
                 print bpth
          path = request.path = request['TraversalRequestNameStack']

When I look at the output of this I get:

xxx
<bound method MyApp.foobar of <MyApp at /IMS>>
None

This is on Zope 2.8.8 and I've never had problems with 
__before_publishing_traverse__ in Zope 2.8's before.
Could it be that something in Zope 2.8.8 has changed?

-- 
Peter Bengtsson,
work www.fry-it.com
home www.peterbe.com
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