[Zope] Newbie needs help

[Dieter Maurer]

Michel Combe wrote at 2003-2-3 15:32 +0100:
 > What I want to do is display, from the result of an SQL query, each first
 > occurence of a supplier name .
 > ie : I have a query which returns for example "s1,s1,s1,s2,s2,s3,s3" and I
 > want to display "s1,s2,s3".
 > 
 > This is what I wrote :
 > <dtml-let previous="''">
 > <dtml-in SQL_SelectSupplier>
 >   <dtml-if "SupplierName!=previous">
 >     <p>Found First</p>
 >   <dtml-else>
 >     <p>Found Next</p>
 >     <dtml-let previous=SupplierName></dtml-let>
 >   </dtml-if>
 > <dtml-in>
 > 
 > It doesn't work and I can't find why...
Look at the "first-xxx" variable defined by "dtml-in".

You can read something about it in

  <http://www.dieter.handshake.de/pyprojects/zope/book/chap3.html>

Other places: the "DTML reference" in the embedded online help,
and the appendix of the Zope book.


Dieter