[Zope-CMF] Topic Criteria excluding subject

[Tres Seaver]

Jan Ulrich Hasecke wrote:

> Hi,
> 
> is it possible to exclude Content in a topic-view by a keyword?
> 
> I have a Topic which displays links with general content. Search by
> content-type "Link". 
> 
> Now I've made a Topic with links to a special Content, searched by
> Subject:"special Keyword" and I do not want to show this links up in
> the general linkcollection.
> 
> Is it possible to exclude them by Subject, someting like !Keyword 

Nope, not with a stock KeywordIndex.  You could implement a new
PluginIndex which supported a syntax like:

   portal_catalog.searchResults( Subject={ query: 'Spanish Inquisition'
                                         , operator='not'
                                         } )

Or you could leave the index out and post-filter the results:

    brains = self.portal_catalog.searchResults( ... )
    return filter( lambda x: 'Spanish Inquisition' not in x.Subject
                 , brains )

Tres.
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Tres Seaver                                tseaver@zope.com
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