Re: [Zope] max 2 levels of indirection?

2005-08-22 Thread J Cameron Cooper

Sean Dunn wrote:
I’m running Zope 2.0.7, and I’m having a problem.. Consider me a newbie, 
as I’ve only been using Zope for a few weeks.


After boiling the problem down to a test case, it seemed that I couldn’t 
have a DTML method call a DTML method which then calls a Python script. 
But then I realized it was a more general problem of max number levels 
of indirection.. So I can’t have a DTML->DTML->DTML or 
DTML->DTML->PythonScript. Is this a bug? When I try this, I get a Name 
Error, which says that the name of the 3^rd level object is not defined.


Here’s an example:

DTML Method TestA:



DTML Method TestB:



DTML Method TestC:

Test C has run.

If I view TestA, I get the NameError that TestC doesn’t exist. If I view 
TestB, I get the output “Test C has run”. All objects are in the same 
folder.


Is there some namespace weirdness that I don’t understand?


When you call DTML methods directly, they expect to be passed certain 
parameters, including the namespace. When you simply use the names, this 
is done implicitly. When calling explicitly, you can lose the namespace 
if you don't follow the proper convention. I think you'll find that it 
works if you try::


 DTML Method TestA:

 

 DTML Method TestB:

 

 DTML Method TestC:

 Test C has run.

For calling DTML explicitly, it usually looks like::

 

See http://www.plope.com/Books/2_7Edition/AppendixE.stx for why.

Also:
http://mail.zope.org/pipermail/zope-db/2003-March/001554.html

This is one of the good reasons to avoid DTML, by the way.

--jcc
--
"Building Websites with Plone"
http://plonebook.packtpub.com
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[Zope] max 2 levels of indirection?

2005-08-22 Thread Sean Dunn








I’m running Zope 2.0.7, and I’m having a
problem.. Consider me a newbie, as I’ve only been using Zope for a few
weeks.

 

After boiling the problem down to a test case, it seemed
that I couldn’t have a DTML method call a DTML method which then calls a
Python script. But then I realized it was a more general problem of max number
levels of indirection.. So I can’t have a DTML->DTML->DTML or
DTML->DTML->PythonScript. Is this a bug? When I try this, I get a Name
Error, which says that the name of the 3rd level object is not
defined.

 

 

Here’s an example:

 

DTML Method TestA:



 

DTML Method TestB:



 

DTML Method TestC:

Test C has run.

 

 

If I view TestA, I get the NameError that TestC doesn’t
exist. If I view TestB, I get the output “Test C has run”. All objects
are in the same folder.

 

Is there some namespace weirdness that I don’t
understand?

 

Thanks,

Sean

 






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