Neat!
----- Original Message -----
From: "Steve Alexander" <[EMAIL PROTECTED]>
To: "Morten W. Petersen" <[EMAIL PROTECTED]>
Cc: <[EMAIL PROTECTED]>
Sent: Monday, February 26, 2001 1:31 PM
Subject: Re: [Zope-dev] ZCatalog problems
> Morten W. Petersen wrote:
>
> > Hi guys,
> >
> > I'm having trouble making ZCatalog work. The problem is that there
> > are 29 objects of a given meta type, with the same booleans that
> > should be returned for an iteration; but only 20 are. Is this a
> > result of caching perhaps? Or lazy results?
>
> Could be that your objects have different ideas of what are proper
> boolean values.
>
> I assume you're using a FieldIndex. Try calling
> uniqueValuesFor(index_name) to see what values are stored. You may find
> that you have 0, 1, '1' and '', for example.
>
> In situations like that, I get the unique values, then construct a query
> for the catalog based on the true or false values.
>
> To get the true values, something like
>
> Catalog(boolean_index=
> filter(None, Catalog.uniqueValuesFor('boolean_index'))
>
> To get the false ones:
>
> Catalog(boolean_index=
> filter(lambda x: not x,
> Catalog.uniqueValuesFor('boolean_index'))
>
> --
> Steve Alexander
> Software Engineer
> Cat-Box limited
>
>
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