[Zope] Yet Another Namespace Question

[Dieter Maurer]

Roger Erens writes:
 > I'd just like to make sure that I interpret Zope Book's chapter 7 (Advanced
 > DTML scripting) correctly.
 > 
 > "But the DTML stack is not all there is to names because DTML doesn't start
 > with an empty stack, (...)"
 > "the client object is the first object on the top of the DTML namespace
 > stack."
 > "the request namespace is always on the bottom of the DTML namespace stack
 > (...)."
 > 
 > To me this sounds as if there could be a whole bunch of objects in between
 > these two objects, but I have not seen any proof of this. So I guess I stick
 > to this picture before execution starts?
 > 
 > |                  | 
 > |  client object   | top of namespace stack
 > |                  |  
 > |                  | ...really nothing in between?
 > |                  |
 > |  request         | bottom of namespace stack
 > +------------------+ 
There is nothing in between!

 > Now suppose I have a folder X, containing objects A and B. I call a script
 > gimmeListing on X; gimmeListing uses <dtml-in objectValues>.
 > Hence the namespace would look like this in the first iteration?
Yes.
 > 
 > |                  | \
 > |       A          |  \
 > |                  |   \
 > |       X          |    > this whole beast is the _ namespace? (Which has
 > some interesting
 > |                  |   /                                        attributes
 > such as len(),
 > |    REQUEST       |  /                                         getitem()
 > and range()
 > +------------------+ /                                         )


Dieter