[Zope-CMF] Create search for folders

[Tres Seaver]

On Wed, 18 Jul 2001, Yoke May Seow wrote:

> 	I still can't figure out how to create a search criteria that
> 	only allows me to search within the a folder and its
> 	sub-folder.
> 
> 	Anyone can help me on this? Appreciate it a lot. Thanks.

Zope 2.4 adds a new index type, 'PathIndex', which is aimed at
making this a no-brainer.  Until then, you can achieve the effect
in a couple of ways:

 - Add a property to each folder at a given "level" which identifies
   it uniquely among its peers;  add a field index to the catalog
   on that property, and search it.

 - Add an ExternalMethod which generates a set of path prefixes for
   an object, and catalog its results with a keyword index.  This
   script might look something like (untested):

     from Products.CMFCore.utils import getToolByName

     def getPathPrefixes( self ):
         """
             Return the set of path prefixes for a given object;
             the result will be a tuple of tuples, e.g.:

             ( ( '', )
             , ( '', 'Members' )
             , ( '', 'Members', 'tres' )
             , ( '', 'Members', 'tres', 'index_html' )
             )
         """
         tool = getToolByName( self, 'portal_url' )
         path = tool.getRelativeContentPath( self ) # tuple of IDs
         result = []

         for i in range( len( path ) ):
             result.append( path[ : i+1 ] )

         return tuple( result )

Tres.
-- 
===============================================================
Tres Seaver                                tseaver@digicool.com
Digital Creations     "Zope Dealers"       http://www.zope.org