On Monday 19 February 2001 16:56, John Morton wrote:

On Sun, 18 Feb 2001 21:57:27 -0600 Jeff Hotz <jeff@hotz.net> wrote:

...

I only want to operate on the first 3 records returned in the ZSQL_select_images.

I thought that a dtml-if test would do it based on the dtml-var sequence-index but I'm not having any luck.

Any suggestions on either my logic or the implementation of it?

Any help you can offer will be greatly appreciated. Thanks.

<dtml-in ZSQL_select_images> <dtml-if expr="'<dtml-var sequence-index>' < 3">

You can't embed a dtml statement inside another like this .I believe this says 'if the string '<dtml-var sequence-index>' is less than three', which is not what you want. What you probably did was to start by using sequence-index and had zope complain about it. What you should try is this:

<dtml-if expr="_['sequence-index'] < 3">

Use the dtml namespace lookup notation when ever you need to use an attribute name with a '-' in it, inside an expression. And submit it as a bug to the collector until the DC folk give in and include '_' equivalents to all the attributes that use dashes :-)

Whilst this is a good answer in that it corrects a misunderstanding in the users understanding of DTML, there is, imho, a better solution to the actual problem. And that is to slice the returned list from the ZSQL method.... something like: <dtml-in expr="ZSQL_select_images()[:3]"> ... </dtml-in> will only iterate over the first 3 elements in the list.

John