Re: [Zope] external methods and REQUEST

18 Feb 1999

      David Wagle wrote:
...
Ok, figured it out. Thanks to everyone for the help
basically (after playing around with it for a bit)
I found that the following code:
def dwName(self,REQUEST=None):
    "return the AUTHENTICATED_USER string"
    if REQUEST is None and hasattr(self,'REQUEST'):
        REQUEST=self.REQEUEST
    return "%s" % REQUEST['AUTHENTICATED_USER']
works fine when called with teh following DTML:
<!--#var "dwName('self',_['REQUEST'])"-->
Now -- WHY it has to be this explicite I'm still unclear
on. I understand that there's a difference between the
dtml engine and the ORB, but what exactly is going
on here is unclear.
Moreover, MOST of the people I talked with thought that
the code should work if called from soemthing like:
<!--#var "dwName(REQUEST)"--> or even
        <!--#var dwName-->
However, to get it to work requires the dtml I provided earlier.
I ran into something similar yesterday. *doublechecks*

Yes. It's weird, I don't know why, but somehow 'REQUEST=None' in the
parameter list of the external method makes a difference. Let's say I
have these external methods:

def reqtest0(self, REQUEST):
    if REQUEST:
        return "Got REQUEST"
    else:
        return "No REQUEST"

def reqtest1(self, REQUEST=None):
    if REQUEST:
        return "Got REQUEST"
    else:
        return "No REQUEST"

One'd think they'd do the same, right? Somehow, they don't. In DTML:

<!--#var "reqtest0(REQUEST)"-->

Gives me 'Got REQUEST'

While:

<!--#var "reqtest1(REQUEST")-->

Gives "No REQUEST"

Finally, imitating your trick (why the quoted 'self'?):

<!--#var "reqtest1('self', _['REQUEST'])"-->

Gives "Got REQUEST". (same result for reqtest0)

Bizarre. Anyone know why? Some thorough explanation would be useful. I'm
feeling as if I've just entered the Perl^H^H^H^HTwilight Zone. :)

Regards,

Martijn

Re: [Zope] external methods and REQUEST

Martijn Faassen