[Zope] Sort keyword index

[Dieter Maurer]

Garito wrote at 2004-9-13 16:39 +0200:
>How can I sort the results of a ZCatalog?
>
>I try these:
>
>return catalog({'meta_type': 'type1', 'multiplesvalues': 'value1'}, 
>sort_on='multiplesvalues')

A requirement for this is that "multiplesvalues" is a "FieldIndex".
Other types of indexes cannot be used for index based sorting.

> ...
>  Module Products.ZCatalog.Catalog, line 577, in sortResults
>AttributeError: documentToKeyMap

>Note that multiplesvalues is a keyword index and I need all objects that 
>have value1 into multiplesvalues then sort by multiplesvalues

You cannot use index based sorting but must implement your
own (external) sorting.

-- 
Dieter