[Zope] question on objectValues

[J Cameron Cooper]

Wombie Tomek wrote:
> I've trying to write a little dtml method that will out put a list of
> images in a given location using a variable "path" with is passed from
> a form.  ?path=photos1...
> 
> but haven't had much luck because it doesn't seems to interpret the
> variable i want to be a path.  if i put the path directly into the
> program ie "photos1.objectValues()" it works.  but i need it to be
> feed from a variable path.
> 
> <dtml-in expr="path.objectValues('CMF ZPhotoSlides')">
> 
> <folder path="wombat/&dtml-id;/" name="&dtml-title_or_id;"
> amount="<dtml-in expr="objectValues(['CMF ZPhoto'])"><dtml-if
> sequence-end><dtml-var
> count-description></dtml-if></dtml-in>"/>
> 
> </dtml-in>
> 
> this should simple ;-)  but i'm missing something.

<dtml-in "_[path].objectValues()">

You want to look up an object in the namespace, and to do so you must 
use dictionary lookup on the namespace (which is the variable "_".)

One could also use getattr or similar.

Think of it this way:

 >>> namespace = {"photos1":someobject, "photos2":someotherobject}
 >>> path = "photos1"
 >>> ph = namespace[path]
 >>> # being the same as...
 >>> ph = namespace["photos1"]
 >>> # which is like saying <dtml-var "photos1.objectValues()">

		--jcc