[Zope] ZCatalog searching on null field

[Chris McDonough]

Hi BZ,

Assuming field_name is a field index, try:

<dtml-in "searchResults(field_name=[''])" size="5" start=query_start>
...
</dtml-in>

For the ugly reasons why this is necessary, see the docstring of the
_apply_index method of the UnIndex class within
lib/python/SearchIndex/UnIndex.py .


----- Original Message -----
From: "BZ" <bz@bwanazulia.com>
To: <zope@zope.org>
Sent: Monday, May 07, 2001 6:37 PM
Subject: [Zope] ZCatalog searching on null field


> 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
>
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