[Zope] What If It Doesn't Have a Key?

Andreas Jung lists at zopyx.com
Mon Aug 13 12:47:33 EDT 2007

--On 13. August 2007 12:36:13 -0400 tonylabarbara at aol.com wrote:

> Hi;
> I have this line of code:
> <span tal:condition="python:request.has_key('checkbox_1')"
> tal:omit-tag=""> I would like to do the exact opposite of that. In other
> words, have the condition render if checkbox_1 does not exist. How do I
> do that? TIA,
> Tony

Look at the 'not:' directive.

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