[Zope] ZCatalog searching on null field

7 May 2001

      I want to search through a ZCatalog and only return things that have an empty field.
...
From everything I have read, this should work
<dtml-in "searchResults(field_name='')" size="5" start=query_start>
  ....
</dtml-in>

but it does not...

Anyone?

BZ