[Zope] Checking for a boolean property value in DTML

[marc lindahl]

> From: complaw@hal-pc.org
> Date: Fri, 15 Jun 2001 22:32:18 GMT
> To: Dieter Maurer <dieter@handshake.de>, complaw@hal-pc.org, zope@zope.org
> Subject: Re: [Zope] Checking for a boolean property value in DTML
> 
>> complaw@hal-pc.org writes:
>>> I have a boolean property in a DTML Document.  The boolean property is
> called 
>>> "mental_steps_doctrine".  I want to list those documents that have
>>> mental_steps_doctrine set to "TRUE"....
>>> <dtml-if expr="mental_steps_doctrine == 1">
>> Try:
>> <dtml-if mental_steps_doctrine>
> 
> I had tried that.  It didn't work (much to my surprise).
> 

Wouldn't that be a check if the variable itself exists?

I would think:

<dtml-if expr="mental_steps_doctrine">