On Tue, Feb 03, 2009 at 08:58:38PM -0500, DaveG wrote:
> Here's what I meant to say.
> Is there a way to determine whether a variable passed into an included
> page has a value, and whether the variable has actually been passed in?
> Doing something like:
> (:include mygroup.mypage var="myval" :)
>
> and then inside mygroup.mypage:
> (:if !equal {$$var} "" :)
>
> The above works, except when {$$var} is not actually passed into the
> included page, as:
> (:include mygroup.mypage var="myval" :)
>
> in which case {$$var} evaluates to the string "{$$var}" (ie, no
> substitution, as there is nothing to substitute).
>
> I can use a Markup Expression to do a test, but wondered if there was a
> 'built-in' way.
There's not currently a 'built-in' way. I've been musing
that unset variables should probably evaluate to '' instead
of remaining in the markup.
Pm
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