[Zope] Using batch variables in expressions

[Kevin Dangoor]

-----Original Message-----
From: Ben Glazer <glazer@scicomp.com>
To: Zope Mailing List <zope@zope.org>
Cc: Robert Young <ryoung@scicomp.com>; Elaine Kant <kant@scicomp.com>
Date: Tuesday, October 26, 1999 6:29 PM
Subject: [Zope] Using batch variables in expressions


>I want to verify that certain fields in a form have been entered.  Here's a
>code snippet I've tried to use:
>
><dtml-let required="('first', 'last', 'email')">
> <dtml-in required>
> <dtml-if expr="REQUEST.form[sequence-item]">
>    <dtml-var sequence-item> exists
> </dtml-if>
> </dtml-in>
></dtml-let>

The way to get around python choking on this is to look up sequence-item in
the namespace:
<dtml-if expr="REQUEST.form[_['sequence-item']]">

Kevin