[Zope] <dtml-if> question
Ivan Cornell
ivan.cornell@framestore.co.uk
Thu, 22 Feb 2001 13:24:26 +0000
>
> What the following code should do is test wheter an image exists and
> if it exists render it in the browser. If it doesn't exist it should show an empty
> default image. I found two ways to do it and both do it wrong in different ways
>
> <dtml-let foto="'/Cis/fotos/afoto.jpg'">
>
> <dtml-if expr="_.getitem('foto')">
> <img src="&dtml-foto;">
> <dtml-else>
> <img src="/Cis/fotos/Noface.jpg">
> </dtml-if>
Try something like this:
<dtml-if "_.hasattr(this(), '/Cis/fotos/afoto.jpg')"><dtml-let
foto="/Cis/fotos/afoto.jpg"><dtml-var foto></dtml-let>
<dtml-else>
<img src="/Cis/fotos/Noface.jpg">
</dtml-if>
Also, note that you can't embed dtml inside dtml.
Ivan