[Zope] Soft References in DTML

[Jason Spisak]

John Morton writes:

> I'm constantly running into this general problem in DTML - how do I access
> an object or property who's name is given in a string?
> 
> Here's a specific problem: 
> 
> I've got a Zclass product that has a string property in a sheet that's
> supposed to hold the name of the prefered cascading style sheet used when
> rendering the object. The name is automatically added to the header of the
> html doc when rendered, like this:
> 
> <link href="<dtml-var style_sheet>" ...>
> 
> But the style sheet itself lives a few directories down from the document
> being rendered so I really want the absolute URL. If I could act the
> object I could do <dtml-var "css_object.absolute_url()"> - but the name
> css_object (or whatever) is the value of the string style_sheet. 
> 
> So how can I dereference the string?
> 
<dtml-var "_[_['style_sheet']]">

All my best,


Jason Spisak
CIO
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