[Zope] slicing ZTUtils.Batch

Fri, 6 Jun 2003 19:42:21 -0400

Ya I forgot to include the definition of plates which is an instance of
ZTUtils.Batch

Basically, it appears ZTUtils.Batch doesn't support slicing.  I was able
to come up with a workaround using a snazzy list comprehension but
ultimately that is a hack and I'd much rather be able to use slicing.

So is there a technical reason that Batch objects shouldn't allow
slicing?

Jordan Baker
Contradix Corporation
"Holistic IT Solutions"

-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org] On Behalf Of
Kevin Carlson
Sent: Friday, June 06, 2003 6:07 PM
To: jbb@contradix.com
Cc: zope@zope.org
Subject: Re: [Zope] slicing ZTUtils.Batch

Jordan Baker wrote:

>Hi I'm writing some somewhat convoluted ZPT that should work tho,
>
><tr tal:repeat="row python:range(2)">
>	<td align="center" tal:repeat="plate python:plates[row * 2:(row
>* 2) + 2]">
>		FORMAT CONTENT
>	</td>
></tr>
>
>Zope is giving me an error complaining about a missing __getslice__
>
>

If I create the following template based on your code it runs fine.  It 
may be a problem with whatever your 'plates' object is in the second 
tal:repeat.

<html>
  <head>
    <title tal:content="template/title">The title</title>
  </head>
  <body>
  <table>
    <div tal:define="plates string:slkfdjlskdjfldskjsdfsdfsdfsdff">
      <tr tal:repeat="row python:range(2)">
        <td align="center" tal:repeat="plate python:plates[row * 2:(row*

2) + 2]">
          <div tal:replace="plate"></div>
        </td>
      </tr>
    </div>
  </table>
  </body>
</html>

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