[ZDP] BackTalk to Document The Zope Book (2.5 Edition)/Advanced Page Templates

Thu, 03 Oct 2002 20:19:58 -0400

A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZopeBook/current/AdvZPT.stx#1-0

---------------

  In Chapter 5, "Using Zope Page Templates" you learned the basics
  about Page Templates. In this chapter you'll learn about advanced
  techniques including new types of expressions and macros.

    % Anonymous User - Apr. 30, 2002 5:14 pm:
     Please add examples of using elements from the metal and tal namespaces. 
     The following quote from the CMF mailing list explains the definition of 
     <metal:block...>. 

     > In the page template portal_skins/zpt_generic/main_template the following 
     > statement seems to be an error. 
     > 
     >     <metal:block define-slot="base" /> 
     > 
     > I found no reference to a <metal> in the current METAL or TAL specification.

     The element is actually in the METAL namespace;  that is, its name
     really is '<metal:block>', not '<metal>'.  It exists for the relatively
     rare case when macro expansion needs to be able to insert a slot into
     the middle of another element, and can't be attached to any other
     (legal) element (for instance, '<div>' is illegal inside the '<head>'
     element).

    % Anonymous User - Oct. 3, 2002 8:19 pm:
     Please include examples of templates working with
     External Methods and Python Scripts.  Include an example
     External Method and Python Script for each and how to
     pass values in both directions.