[Zope] PARENTS and the with tag

[Rik Hoekstra]

> Hi,
>
> I'm having some scoping issues with PARENTS.  It doesn't seem to
> acknowledge with tags or anything else.  For example, if I have the
> folder hierarchy:
> A
>   B
>     C
>   D
>     E
>
> and in the index_html document of C I say:
> <dtml-with E>
> <dtml-in PARENTS>
> <dtml-var "_['sequence-item'].id"><br>
> </dtml-in>
> </dtml-with>
>
> it produces:
> C
> B
> A

That's because acquisition produces a namespace stack of A B C, so in
reversed order PARENTS are BA if index_html is a DTML Method. If index_html
is a DTML Document then PARENTS are CBA. Actually Zope should give a
NameError if you call <dtml-with E>, as E per se is not accessible from C.
If you want E, you should call <dtml-with "D.E">.
So. if you call D.E from C's index_html then its PARENTS are still C, B, and
A. The with tag does not seem to stack namespace upon the existing namespace
stack.

>
> when I actually want:
> E
> D
> A
>
> And if I say:
> <dtml-var "E.PARENTS">
>
> then I get an error message.

Yes, because PARENTS is not an attribute of E. It will generate an error
anywhere.

>
> What am I doing wrong?  Is there an easy way to make it behave like I want
> it to?

This is a bit difficult to answer if you do not make clear what you want to
attain? You could change the folder hierarchy to

A
  D
    E
      B
       C

or in your own hierarchy call C's index html from E.

Rik