[ZPT] (newbie) conditional content based on request

[Thomas Olsen]

Hi

I guess i'm a bit slow but I cant get this to work:

I have a paragraph that I want to show only if a parameter is true.

I have tried 

<p tal:condition="exists:request/arg">
Show this if arg exists
</p>

<p tal:condition="request/arg">
Show this if arg exists and is true
</p>

But I keep getting a KeyError or the wrong result...

What am I doing wrong?

-- 
Thomas Olsen
Programmer
Icon Medialab, Denmark
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