[ZDP] BackTalk to Document The Zope Book (2.5 Edition)/Advanced Page Templates
Wed, 25 Sep 2002 18:29:48 -0400
A comment to the paragraph below was recently added via http://www.zope.org/Documentation/Books/ZopeBook/current/AdvZPT.stx#3-11
You can define your own variable using the 'tal:define'
attribute. There are several reasons that you might want to do
this. One reason is to avoid having to write long expressions
repeatedly in a template. Another is to avoid having to call
expensive methods repeatedly. You can define a variable once and
then use it many times in a template. For example, here's a list
that defines a variable and later tests it and repeats over it::
<ul tal:define="items container/objectIds"
<li tal:repeat="item items">
% Anonymous User - Apr. 29, 2002 1:35 pm:
"You can define a variable once and then use it many times in a template. "
shouldn't this be ...
"You can define a variable once and then use it many times within its defining tag. " or omit since it is
% Anonymous User - Sep. 25, 2002 6:29 pm:
What abt defining more than one variable? (section heading is plural!) blf