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 +----------------------------------+ | Phil Mayers, Network Support | | Centre for Computing Services | | Imperial College | +----------------------------------+ -----Original Message----- From: Martin Andrews [mailto:mandrews@netgenics.com] Sent: 11 February 2001 19:58 To: zope@zope.org Subject: [Zope] Help: dtml-var expr -> DTML method -> ZSQL method Confused by acquisition again (I think). I have a ZSQL that gets the next value from a postgres sequence - it has no arguments and the following body - name is "next_rid": select nextval('reservation_id') I then have a DTML method that returns just the integer result - name is "get_rid": <dtml-return expr="next_rid()[0]['nextval']"> Both of these work fine, and I can put "<dtml-var get_rid>" in another DTML method and it works fine. What does not work is: <dtml-var expr="get_rid()"> Calling from a expression give me a NameError for next_rid. Help - what am I missing. Martin -- Martin Andrews, mandrews@netgenics.com _______________________________________________ Zope maillist - Zope@zope.org http://lists.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://lists.zope.org/mailman/listinfo/zope-announce http://lists.zope.org/mailman/listinfo/zope-dev )