[Zope] Checking multiple variables existence

[Justin Dunsworth]

These are required to be set, though.. right?

Doing:
<dtml-call "REQUEST.set('var_one','OK')">
<dtml-call "REQUEST.set('var_two','OK')">

<dtml-if "var_one=='OK' and var_two=='OK'"> Set
<dtml-else> Not Set
</dtml-if>

works but taking away var_two and I get a NameError: name 'var_two' is not
defined. This is what I'm trying to check is if they exist. Not
particularly looking to match them to anything just yet but rather just to
see if they exist. If they throw an error then it's not working.

On Tue, Jan 24, 2012 at 11:08 AM, Jaroslav Lukesh <lukesh at seznam.cz> wrote:

> it works:
>
> <dtml-if "var1=='OK' and var2==3 and var3 in ('a',1,'1') and var4 != 'OK'
> and var5">
>
> note1: var5 is string, true when <>'' nor None but must exists
>
> note2: var5 is int, true when <>0 nor None but must exists
>
> <dtml-else>
> </dtml-if>
>
>
> ----- Puvodní zpráva ----- Od: Justin Dunsworth
>
>
> Is there any way to check if multiple variables exist in the same if
> statement? Right now I am having to writing multiple nested if statements
> but can be quite cumbersome... so just looking for an easier way.
>
>
> Currently I'd have to write:
> <dtml-if var1>
>  <dtml-if var2>
>   <dtml-if var3>
>   <dtml-else>
>   </dtml-if>
>  <dtml-else>
>  </dtml-if>
> <dtml-else>
> </dtml-if>
>
>
> When it would be easier to do something like:
>
>
> <dtml-if "var1 and var2 and var3">
> <dtml-else>
> </dtml-if>
>
>
>
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