I was pretty sure the problem was that I was losing context when calling get_rid() - but for the life of me I cannot figure out how to pass it on - trying: <dtml-var expr="get_rid(_.None, REQUEST)"> still gives me the NameError for next_rid - but the first one works: <dtml-var expr="get_rid(_.None, _)"> Anyone care to illuminate me as to why (what am I doing with the call above? Thanks, Martin

-----Original Message----- From: Mayers, Philip J [mailto:p.mayers@ic.ac.uk] Sent: Monday, February 12, 2001 5:45 AM To: 'Martin Andrews'; 'zope@zope.org' Subject: RE: [Zope] Help: dtml-var expr -> DTML method -> ZSQL method

The DTML method call:

<dtml-var expr="get_rid()">

Will call get_rid without a "namespace", so get_rid can't lookup next_rid, and therefore it fails. Try this:

<dtml-var expr="get_rid(_.None, _)">

Try the Zope "Help" link from the management interface, go "Zope Help", "Zope API", "DTML Method", and lookup the API for __call__:

__call__(client=None, REQUEST={}, **kw):

So, clearly this will work:

<dtml-var expr="get_rid(_.None, REQUEST)">

Namespaces are hard!

Regards, Phil