[Zope] Accessing attributes - object with 'implicit' period in id

[John Schinnerer]

Aloha,

I'm back with an example.  My situation seems different than solutions
in recent threads, and I don't see how the answers thus far apply (if
they do).

I'm looping through the results of a catalog search, displaying
thumbnail images, caption, date, etc..  A thumbnail, linked to a
full-sized image, is displayed for each result:

...
<a href="<dtml-var imageURL>">
  <img src="<dtml-var thumbURL>" border="0" alt="<dtml-var caption>">
</a>
...

imageURL and thumbURL are properties of each gallery item which point
to the actual image, and will be something like:

/gallery/thumbs/C03Valley001.jpg

I want to get the height and width attributes from each thumbURL item
and use them in the img tag attributes.  But:

height="<dtml-var thumbURL.height>" does not work, giving:

Error Value: exceptions.KeyError on thumbURL.height in ""

I am assuming this is because in my situation all thumbURL items
returned are objects with periods in their IDs.  So it's choking on
trying to find '/gallery/thumbs/C03Valley001.jpg.height' - is this the
case?  Or is there some other problem here?

In any case, how do I access the attributes (like height and width) in
this situation, where the period in the actual ID is 'implicit' in
thumbURL?

thx,
John S.

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