[Zope] Help with iterating thru a list of objects

[Peter Bengtsson]

Python Scripts are never overkill. The only disadvantage with replaceing
DTML logic with small Python Scripts is that the list of objects in the ZMI
become very long.

In DTML:
<dtml-call "REQUEST.set('prev_A','#notlikelytobe#')">
<dtml-in sql_query>
    <dtml-if "A == REQUEST['prev_A']">
        Do something
    </dtml-if>
    <dtml-call "REQUEST.set('prev_A',A)">
</dtml-in>

Or in the superior alternative (script):

prev_A= "#notlikelytobe#"
for rec in context.sql_query():
    if rec.A == prev_A:
         Do something
    prev_A = rec.A




----- Original Message -----
From: "Dario Lopez-Kästen" <dario@ita.chalmers.se>
To: <zope@zope.org>
Sent: Friday, June 29, 2001 11:22 AM
Subject: [Zope] Help with iterating thru a list of objects


Hello!

I need to display the results of an sql query and I need to compare the
value of field A in the current item with the value of field A in the
previous item, in order to display things correctly.

Doing this in a Python script seems overkill, since I only need to control
the display of things.

I have crancked upp a lot of info in the result of the query for
optimization reasons so changing the query is out of the question.

Any help is appreciated.

Thank you,

/dario

- --------------------------------------------------------------------
Dario Lopez-Kästen     Systems Developer  Chalmers Univ. of Technology
dario@ita.chalmers.se  ICQ will yield no hits    IT Systems & Services



_______________________________________________
Zope maillist  -  Zope@zope.org
http://lists.zope.org/mailman/listinfo/zope
**   No cross posts or HTML encoding!  **
(Related lists -
 http://lists.zope.org/mailman/listinfo/zope-announce
 http://lists.zope.org/mailman/listinfo/zope-dev )