[Zope] Problem when trying to use metal macros from another page template

[Dieter Maurer]

Josef Meile wrote at 2003-11-5 14:18 +0100:
 > ...
 > I have the following structure:
 > 
 > Base Class JMZPTMacros:
 > 
 > <ZopeHome>/lib/python/Shared/JMUtils/JMZPTMacros.py
 > <ZopeHome>/lib/python/Shared/JMUtils/zpt:
 > Here I have the following Page Templates with some macros
 > that I use from my other product JMBoring:
 > generic.zpt
 > generic_add.zpt
 > ...

 > Product JMBoring, which subclases from JMZPTMacros:
 > 
 > ...
 > JMBoring_Add.zpt
 > ...
 > 
 > What I'm trying to do is to call some macros from "generic.zpt"
 > and "generic_add.zpt" in "JMBoring_Add.zpt". The main problem
 > is that the "JMBoring_Add.zpt" Template is loaded outside of
 > the JMBoring class definition (constructor methods are declared
 > before the classe definition), while the other Templates like:
 > "manage_view", "index_html", and "manage_main" are inside, so,
 > they can access the macros in the "JMZPTMacros" base class
 > just by typing:
 > 
 > <p metal:use-macro="here/TemplateID/macros/MacroID">Execute macro</p>
 > 
 > but in the JMBoring_Add.zpt, an AttributeError exception is
 > raised.

Make them additional constructors in your "registerClass".
This ensures that they are registered in your "Product factory"
and can be accessed in the usual way.

-- 
Dieter