On Wed, Mar 22, 2000 at 08:46:19AM +0100, Mark Andrew wrote:

Hi Zopistas

while trying to make gtk's (very useful) Boring Product (slightly more) interesting, I came across the following (for me) strange behaviour.

manage_ methods seem to always have "REQUEST=None" as their last parameter. If I remove the "=None" from manage_edit then I notice no difference, so the actual parameter is presumably being passed. However if remove the complete formal parameter (and the reference to REQUEST in the body of the method)

def manage_edit(self, title): """does this really need a doc string?""" self.title = title # if REQUEST is not None: # return MessageDialog( # title = 'Edited', # message = "Properties for %s changed." % self.id, # action = './manage_main', # )

then everything still works ! Why is python not complaining about a parameter mismatch ?

Because Zope passes in those parameters that the method asks for. If you take away the REQUEST parameter, Zope simply doesn't pass it in. The manage_ methods use REQUEST=None to make sure you can use the methods in situations there is no REQUEST to pass in. You can call manage_edit with a new title, and have it still work, from a DTML Method without having to pass in the REQUEST object, as you won't need the MessageDialog anyway. -- Martijn Pieters | Software Engineer mailto:mj@digicool.com | Digital Creations http://www.digicool.com/ | Creators of Zope http://www.zope.org/ | The Open Source Web Application Server ---------------------------------------------