[Zope] hiding content -metadata/subject filter

[Michael Havard]

I'm trying to set up a system where content authors can upload/edit files on 
ZOPE in a CMF site and use the default index_html to show a list of files. 
That works fine. But we need to refine it to allow the authors to hide some 
content from the index but still have it linkable from a document in the 
index. Clear as mud right.

For example I might have a document that links to several other documents 
and has images, js, and css attached. I want the user to see the main 
document but to only access the images and scripts through that document and 
not see those items in the index.

What's the best way? I attempted to use something I saw from zopelabs using 
a filter on 'Subject':'Indexable' but that failed with an error every time 
with exceptions.TypeError on 'in ' requires character as left operand in "", 
at line 9, column 2.

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