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

On 8/13/07, tonylabarbara@aol.com <tonylabarbara@aol.com> wrote:

I have this line of code: <span tal:condition="python:request.has_key('checkbox_1')" tal:omit-tag="">

Better written as <tal:block condition="exists:request/checkbox_1">

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?

Either use a 'not' in your python expression ("python:not request.has_key") or use the not: tales modifier: <tal:block condition="not:exists:request/checkbox_1"> -- Martijn Pieters