Batching raises "Bad Request" (was: [Zope] (no subject))

[Dieter Maurer]

Aruna Prabhakaran writes:
I think I already asked you to provide a subject for your posts...?


 > I have this situation where in I have an SQL method to retrieve records.
 > 
 > GetCountryMethod(Country,State)
 > Country and State are the two parameters being passed to the SQL method
 > 
 > I am trying to display them five at a time on a page.But right now after 
 > displaying 5 records it throws up Bad Request and displays the two parameter 
 > names that i had passed to the method.
 > 
 > I understand its because these variables need to "submitted" to the same 
 > page again and again for every cycle of display.I used hidden variables but 
 > it displays the same 5 records retrieved first time and shows them again and 
You understand correctly!

You should use "dtml-in" build in batch support.
Quite well explained in

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

(I think).

"dtml-in" defines the variable "sequence-query" which usually
provides all query parameters with the exception of the
parameter defining the starting index. You use this
parameter in addition to control where the next/previous
batch should start.

"sequence-query" only works for GET requests, not for "POST"
requests. But, probably, you will be able to use GET requests.


Dieter