[Zope] Searching for Missing Values in ZCatalog

Kevin Dangoor kid@kendermedia.com
Mon, 30 Aug 1999 21:28:02 -0400


    How do I search for all objects that are missing a given property (or
that property is empty)? The specific case is a string called "subcategory".

Catalog({'meta_type' : 'blah', 'category' : 'top', 'subcategory' :
<what???>})

I'm looking for the objects that have a category of 'top', but an empty
subcategory...

Thanks,
Kevin