[Zope] Newbie: dtml-unless

[M. Adam Kendall]

First off, dtml-unless probably won't do you much
good here unless it's actually within the dtml-in.
Think about this.  Where does 'id' come from? 
 
Second, by doing 'id' == 'standard_html_whatever'
you are comparing two strings.  Of course 'id' will
never equal anything other than 'id'.   
So, something like this should work (untested):

<dtml-in expr="foldername.objectValues()">
  <dtml-unless "id == 'standard_html_header'">
    <dtml-unless "id == 'standard_html_footer'">
       <a href="<dtml-var absolute_url>"><dtml-var id></a><br>
    </dtml-unless>
  </dtml-unless>
</dtml-in>


> I'd like to list the content of a folder, except if it is the 
> standard_html_header or footer. I use this code:
> 
> <dtml-unless "'id' == 'standard_html_header'">
> <dtml-unless "'id' == 'standard_html_footer'">
> <dtml-in expr="foldername.objectValues()">
> <a href="<dtml-var absolute_url>"><dtml-var id></a><br>
> </dtml-in>
> </dtml-unless>
> </dtml-unless>