Maximum recursion depth using context in template

I'm having a kind of weird problem with a viewlet template.

We're inserting a list of custom links, specified by the customer, in 
the header - like an extra menu.

I want to configure this by having a folder containing only links in the 
site root, i.e. accessible at "context/links".

This exists and is iterable:

>>> app.site.links

<ATFolder at /site/links>

>>> for l in app.site.links:

...     print l

...

nyheder

partnerskaber


I then insert code for generating it along with our customized search 
box viewlet:

<ul id="extralinks"

     tal:repeat="link root/site/links">

     <li class="plain" >

     <a href="..." class="" title="">

         <span tal:content="structure link/title"></span>

     </a>

     </li>

</ul>

This, however, apparently gives an infinite recursion:

RuntimeError('maximum recursion depth exceeded',) (Also, the following
error occurred while attempting to render the standard error message,
please see the event log for full details: maximum recursion depth
exceeded)

However, if I try to access specific members of existing links, it 
actually "works".

Thus, having these lines in the template:

<!-- Extra links -->
<ul id="extralinks"
     tal:repeat="link root/site/links/nyheder/title">
     <li class="plain" >
     <a href="/site/news" class="" title="">
         <span tal:content="structure link"></span>
     </a>
     </li>
</ul>

will iterate through the title of the link "Nyheder", yielding the link 
texts 'N', 'y', 'h', 'e', 'd', 'e', 'r'.

What am I doing wrong here? I find the failure to iterate through the 
links while succeeding in accessing the title rather confusing.

Thanks in advance for any response!

Below, the last lines of the stack trace from the log.

Best regards
Carsten


   File "/home/dbc/buildout-cache/eggs/zope.tal-3.5.2-py2.7.egg/zope/tal/talinterpreter.py", line 742, in do_insertStructure_tal

     structure = self.engine.evaluateStructure(expr)

   File "/home/dbc/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Products/PageTemplates/Expressions.py", line 218, in evaluateStructure

     text = super(ZopeContext, self).evaluateStructure(expr)

   File "/home/dbc/buildout-cache/eggs/zope.tales-3.5.2-py2.7.egg/zope/tales/tales.py", line 696, in evaluate

     return expression(self)

   File "/home/dbc/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Products/PageTemplates/Expressions.py", line 383, in __call__

     v = evaluate(var)

   File "/home/dbc/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Products/PageTemplates/Expressions.py", line 225, in evaluateText

     text = self.evaluate(expr)

   File "/home/dbc/buildout-cache/eggs/zope.tales-3.5.2-py2.7.egg/zope/tales/tales.py", line 696, in evaluate

     return expression(self)

   File "/home/dbc/buildout-cache/eggs/zope.tales-3.5.2-py2.7.egg/zope/tales/expressions.py", line 217, in __call__

     return self._eval(econtext)

   File "/home/dbc/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Products/PageTemplates/Expressions.py", line 147, in _eval

     ob = self._subexprs[-1](econtext)

   File "/home/dbc/buildout-cache/eggs/zope.tales-3.5.2-py2.7.egg/zope/tales/expressions.py", line 124, in _eval

     ob = self._traverser(ob, element, econtext)

   File "/home/dbc/buildout-cache/eggs/Zope2-2.13.19-py2.7.egg/Products/PageTemplates/Expressions.py", line 97, in trustedBoboAwareZopeTraverse

     request=request)

   File "/home/dbc/buildout-cache/eggs/zope.traversing-3.13.2-py2.7.egg/zope/traversing/adapters.py", line 131, in traversePathElement

     traversable = ITraversable(obj, None)

   File "/home/dbc/buildout-cache/eggs/zope.component-3.9.5-py2.7.egg/zope/component/hooks.py", line 104, in adapter_hook

     return siteinfo.adapter_hook(interface, object, name, default)

RuntimeError: maximum recursion depth exceeded





-- 
Carsten Agger
Magenta ApS
Incuba, Åbogade 15
DK-8200 Aarhus N

Tlf +45 3336 9699
Dir +45 5060 1476
Mob +45 2086 5010

http://www.magenta.dk
[email protected]


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