[ZDP] BackTalk to Document The Zope Book (2.6 Edition)/Using Zope Page Templates

webmaster at zope.org webmaster at zope.org
Sun Feb 1 02:37:17 EST 2004

A comment to the paragraph below was recently added via http://zope.org/Documentation/Books/ZopeBook/2_6Edition/ZPT.stx#2-33


    Now let's add some context to your 'simple_page' template, in the
    form of a list of the objects that are in the same Folder as the
    template.  You will make a table that has a numbered row for each
    object, and columns for the id, meta-type, and title.  Add these
    lines to the bottom of your example template::

      <table border="1" width="100%">
        <tr tal:repeat="item container/objectValues">
          <td tal:content="repeat/item/number">#</td>
          <td tal:content="item/getId">Id</td>
          <td tal:content="item/meta_type">Meta-Type</td>
          <td tal:content="item/title">Title</td>

      % Anonymous User - Dec. 22, 2003 11:01 am:
       ERROR! should read "td tal:content="item/number">#</td>

      % Anonymous User - Dec. 27, 2003 12:33 am:
       No, actually it should read exactly what it says there.
       The explanation for why it should have the "repeat/" before it is quite bad, though.

      % Anonymous User - Dec. 27, 2003 1:04 am:
       Nevermind, it makes sense now:
       'repeat' is a variable.
       no object in the 'item' array has a 'number' attribute
       so to number everything, you need to write 'repeat/number' to get the 'repeat' variable's 'number attribute'

       since the tal:repeat may be nested, 'repeat/number' is ambigious in this context, so:

       makes sense now :)

      % Anonymous User - Feb. 1, 2004 2:37 am:
       Yes, it does make sense if you pay attention and read below. I think that the explanation is quite
       reasonable, but the distinction between "repeat/item/number" being a reference to the repetition number, and
       the "item/getId" being a reference to an attribute of the item in question is not immediately clear. If you
       think about it, it is, but a clear statement of the distinction would be useful.
       Incidentally, an example of a nested loop may have cleared this up a little by encouraging a little bit of
       intuitive learning.

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