Try testing for existence first -- hasattr()
From: Oliver Sturm <sturm@oliver-sturm.de> Date: Thu, 20 Sep 2001 19:45:41 +0200 To: "zope@zope.org" <zope@zope.org> Subject: [Zope] Testing multiple values for existance
Hi!
I can do <dtml-if foo> to test if foo is known at all. Why can't I do <dtml-if "foo or bar"> to test if either foo or bar are known? I get a "Name Error" saying something like "global name 'foo' is not defined" if I do this (and foo is actually undefined). Is there a different syntax for this?
Oliver Sturm / <sturm@oliver-sturm.de>
-- Key ID: 71D86996 Fingerprint: 8085 5C52 60B8 EFBD DAD0 78B8 CE7F 38D7 71D8 6996
_______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )