[Zope] Getting single values out of lists

[Borno Janekovic]

Hi,

I have a page wich is created out of a database. For every artikel (item)
I have a description and a number of available items.
The page has multiple rows (depending on the database content)
in every row is a input-box in wich the user can enter a number. This
number needs to be substracted from the available items number of the
correct artikel.

My question is how can I get the correct tuple of items out of the list.

For example

In every row I have the substract box and a hidden field with the primary
key:
<input type="text" size=5 value="" name=substract>
<input type="hidden" value="<dtml-var artikel_id>" name="artikel_id">

When I submit the Form I get with the following lines 

<dtml-in "REQUEST.form.items()" sort>
   <dtml-var sequence-key>:<dtml-var sequence-item><br>
</dtm-in>

the content

substract = ['12', '', '', '', '', '', '', '', '', '']
artikel_id = ['20000808095658', '20000808095503', '20000808095341',
'20000808095744', '20000731135126', '20000808092056', '20000808092333',
'20000808092723', '20000808095232', '200007311227'] 

and this is correct. This means that a user has entered 12 for the
artikel_id 20000808095658.

How can I get the single values, so that I can use them? 

How can I extract the values from the list to use the tuple in a
sql-statement? 

Help would be great.

Thanxs 

Borno



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