[Zope-dev] Tree tag bug

[Jason Spisak]

The code below causes the tree tag to throws the following exception
when a subitem is expanded.

Traceback (innermost last):
  File /Zope/lib/python/ZPublisher/Publish.py, line 214, in
publish_module
  File /Zope/lib/python/ZPublisher/Publish.py, line 179, in publish
  File /Zope/lib/python/Zope/__init__.py, line 202, in
zpublisher_exception_hook
    (Object: CatalogAware)
  File /Zope/lib/python/ZPublisher/Publish.py, line 165, in publish
  File /Zope/lib/python/ZPublisher/mapply.py, line 160, in mapply
    (Object: left)
  File /Zope/lib/python/ZPublisher/Publish.py, line 102, in call_object
    (Object: left)
  File /Zope/lib/python/OFS/DTMLMethod.py, line 145, in __call__
    (Object: left)
  File /Zope/lib/python/DocumentTemplate/DT_String.py, line 502, in
__call__
    (Object: left)
  File /Zope/lib/python/DocumentTemplate/DT_In.py, line 691, in
renderwob
    (Object: submissions)
  File /Zope/lib/python/TreeDisplay/TreeTag.py, line 154, in render
    (Object: a tree tag)
  File /Zope/lib/python/TreeDisplay/TreeTag.py, line 226, in tpRender
    (Object: CatalogAware)
  File /Zope/lib/python/TreeDisplay/TreeTag.py, line 543, in apply_diff
    (Info: ([None, (['AAAAAAAOXaM=', []],)], ['AAAAAAAObfc=']))
AttributeError: (see above)


If I reload the page however, it shows up fine with the item expanded. 
When I collapse, it throws the exception again.  If I reload, the
collapsed tree renders as it should.  Sounds like a bug.

Here's the code:

<dtml-in tokens>
<dtml-call "REQUEST.set('token',_[_['sequence-item']])">
<dtml-tree expr="token" branches_expr="objectValues(['Folder', 'DTML
Method', 'DTML Document'])">
<a href="<dtml-var tree-item-url>" target="_parent">
<img src="<dtml-var icon>" border="0"><font size="-1">  <dtml-var
title_or_id></font></a>
</dtml-tree>
<br>
</dtml-in>

The tokens property contains a list of id's of a few objects that are
one folder above the document that contains the tree tag.

Can anyone duplicate/explain this behavior?

All my best,

-- 
Jason Spisak
webmaster@hiretechs.com