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iteration within .tpl file

System

I'm using TST5.5.2 on Win2K.

In my .tpl file the <iw_iterate> tag doesn't seem to have any effect on the outcome of the template. Only the first instance of the replicant item is displayed. And this is regardless, whether I use <iw_perl> containing iwpt_output commands, or using simple HTML code with embedded <iw_value name="..."/> tags.
The documentation for iterations is very poor, I couldn't find a single simple working example.
I've also searched the Devnet excessively and it seems that quite a number of people seem to have problems working with iterations. I've implemented some of the "solutions" from other forum posts, with the same result.
Any help is greatly appreciated.

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Comments

lhdavis

Please post the iterations code snippets from or attach your datacapture.cfg and associated .tpl files so we can see what you're doing (or not doing).

Luke Davis
Open Technology Group, Inc.
luke.davis@med.va.gov

nipper

Also recheck the examples IW includes. Many of those include iw_iterate & it is pretty straightforward.

Andy

iwovGraduate

"The documentation for iterations is very poor, I couldn't find a single simple working example."

Wrong.

Have you looked at the examples shipped with TeamSite ? Have you looked at the online FAQ, etc. for Templating ?

nipper

>Have you looked at the examples shipped with TeamSite ? Have you looked at the online FAQ, etc. for Templating ?

/iw-home/examples/Templating --> grep -R iw_iterate . | wc -l
109

So there are 109 instances of iw_iterate in the examples. I suspect you can find one that works.

Adam Stoller

More often than not - the problem tends to be that you are using a single iw_iterate clause where you need to use a pair of nested iw_iterate clauses.

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

Migrateduser

Sorry, I didn't want to offend anyone with my comment about the documentation.

However, here's a part of my datacapture.cfg and a snippet from the .tpl file.
datacapture.cfg
<item name="news">
<label>News</label>
<replicant min="1" max="10" default="1">
<item name="date">
<text size="20" maxlength="20"/>
</item>
<item name="headline">
<text size="60" maxlength="100"/>
</item>
<item name="link">
<text size="60" maxlength="100"/>
</item>
</replicant>
</item>

.tpl
<table cellspacing="0" cellpadding="0" border="0" width="369">
<iw_iterate var="news" list="dcr.news">
<tr>
<td width='112' nowrap='true' valign='top' class='standard'><iw_value name="news.date"/></td>
<td class='standard'><img border='0' height='1' width='8' src='/images/spacer.gif'/></td>
<td width='249' align='left' class='standard'><iw_value name="news.headline"/></td>
</tr>
<tr>
<td align='right' colspan='3'><a href='{iw_value name="news.link"}' class='standardLinkColor'><img border='0' src='/images/arrow_sml_rgt_gry.gif'/><img border='0' height='1' width='6' src='/images/spacer.gif'/>More</a></td>
</tr>
</iw_iterate>
</table>

Thanks for your help!

iwovGraduate

I think you need to put the <iw... tags outside of CDATA.

Something like ...


<iwpt ..... >
<![CDATA[
 .... some html code here
]]>
<iw_iterate ....... >
<![CDATA[
 .... continue with HTML 
]]>
</iw_iterate>
<![CDATA[
 ... more HTML 
]]>
</iwpt>

nipper

Don't know that either of these matter, however:

<iw_iterate var="news" list="dcr.news">

that is backwards from the examples <iw_iterate list=**** var=****>

also I never use the var with the same name as the list:

<iw_iterate list='dcr.news' var='item'>
<iw_value name='item.date'/>

Andy

Adam Stoller

If you use <iwpt name="...">...</iwpt> - you need to use CDATA tags, but if you use <iwpt name="..."/> (an empty tag) - you don't need CDATA tags

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

lhdavis

I think you only have to do put the <iw...> commands outside of CDATA if your desired generated output is XML.

Luke Davis
Open Technology Group, Inc.
luke.davis@med.va.gov

nipper

>I think you need to put the <iw... tags outside of CDATA.

In his example he should not need CDATA at all.

lhdavis

I think wrong. See Ghoti's post.

Luke Davis
Open Technology Group, Inc.
luke.davis@med.va.gov

Adam Stoller

It's not whether the generated outputt is XML - is whether the PT is coded to be well-formed XML or not (it's a lot easier to write them if you do *not* make the PT well-formed XML - and just use an empty <iwpt/> tag at the beginning)

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com

Migrateduser

I've tried it all, as XML and as non-XML, with CDATA tags and without, with <iw_perl> and without - nothing works, I always get only the first instance of my replicant.
Can it be that the DCR is saved incorrectly?
Here's a bit of code from it:
<news>
<date>26.05.2004</date>
<headline>headline1</headline>
<link>www.link1.com</link>
<date>24.05.2004</date>
<headline>headline2</headline>
<link>www.link2.com</link>
</news>

I have the feeling I'm missing something :-(

Adam Stoller

I'll reiterate (pun slightly intended):

More often than not - the problem tends to be that you are using a single iw_iterate clause where you need to use a pair of nested iw_iterate clauses. *or* that you are using 'x.y' where you need 'x.y.*' or vice-versa.

I tend to do almost all my PT coding in Perl and use very little XML in my PTs - so I'm not entirely sure but I think you want to look at the code you have that says: <iw_iterate var="news" list="dcr.news">First try changing "dcr.news" to "dcr.news.*" (I don't think that's it - but it's a simple change that's easy to test)

Second - try nesting. Something like this: <iw_iterate var="outer" list="dcr.news">
<iw_iterate var="news" list="outer.*">
...
</iw_iterate>
</iw_iterate>

--fish
Senior Consultant, Quotient Inc.
http://www.quotient-inc.com