[Zope] Creating a "list of strings" from DTML-Method?

[Tres Seaver]

Soren Roug <soren@roug.org>
> Organization: Net.conf
> To: zope@zope.org
> Subject: [Zope] Creating a "list of strings" from DTML-Method?
> 
> I'm working on a product where I want to create a property that is a
> selection and allows you to select between a list of folders created in
> the parent folder.
> 
> When you add a property in the property sheet the text directly
> above says:
> |
> |For "selection" and "multiple selection" properties enter the name of
> |a selection variable |in the "Value" field. The selection variable is
> |a property or method that returns a list of strings from which the
> |selection(s) can be chosen.
> |
> After fiddling around a bit I realized that the only methods that
> qualify are Z SQL methods. That's not what I'm looking for. Does
> anybody know how to do this with a DTML method or has anyone
> subclassed the DTML method to a class that returns a list of strings
> instead of rendering the text?

Jim Washington <jwashin@vt.edu>
> 
> Hi, Soren
> 
> You might want put the following in a new dtml method and see if it does
> what you need:
> 
> <dtml-call "REQUEST.set('folderlist', objectIds('Folder'))">
> <dtml-return folderlist>
> 
> Or you might make the list like so:
> 
> <dtml-call "REQUEST.set('folderlist', ['folder1', 'folder2',
> 'folder3'])">
> <dtml-return folderlist>
> 
> IIRC, dtml-return is relatively new to zope, so if it does not work, you
> may need to upgrade.

The temporary isn't needed in this case (might be if you build the list up
programmatically)::

  <dtml-return expr="objectIds( 'Foler' ) )">

or::

  <dtml-return expr="[ 'folder1', 'folder2', 'folder3' ]">

work fine.

Tres.
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Tres Seaver         tseaver@palladion.com    713-523-6582
Palladion Software  http://www.palladion.com