[Zope] Q: How can i check the existence of an image?

[Andreas Pelzner]

Hi Zopes,

How can I check the existence on an image file in my image folder. I
coded a workaround, but it doesn't fit my needs exactly:

<dtml-let myTemp=3Did>=20

'Build the image file name

<dtml-let MyID=3D"'theme_'+myTemp+'.gif'">=20

 'loop over each image in the image folder

<dtml-in expr=3D"images.objectValues('Image')">

' String find

<dtml-if "_.string.find(id(),MyID) > -1">=20

' -> if there is a matching file print image in HTML
<img src=3D"/images/<dtml-var id>" width=3D"145" height=3D"129"> 'print =
image
in HTML

</dtml-if>
</dtml-in>
</dtml-let>
</dtml-let>

...but I'm looking for something like this:

'check if true or not
<dtml-in expr=3D"images.<image_name>">=20

TIA

Gruesse
Andreas Pelzner, AixVision GmbH,