[Zope] Searching File-objects in a Folder

[Richard Smol]

Hi there,

For practice I want to implement WikiWiki in Zope. For that, I for one 
thing have to be able to see if a certain File-object exists in a Folder. 
What method can I use for that? I tried several from the ZQR, but nothing 
works. I also have trouble just to get a list of Files in the Folder. 
Here's a code-fragment of what I try to do in DTML:

<dtml-if "Files.getAttributeNode('<dtml-var file>')">
The file <dtml-var file> exists
<dtml-else>
The file <dtml-var file> does NOT exist
</dtml-if>
<P>
A list of files:
<dtml-in "Files.getChildNodes()">
Found: <dtml-var "_['sequence-item']"><br>
</dtml-in>

So how do I screw up?

TIA!

RS