[Zope] external methods

[Service Informatique CHSR]

Hello,

I'm confused with external methods. Please help.

I want an external method to access its context (for the
purpose of acquisition, etc.). So I write:

def myExtMethod(self):
    pass

Within myExtMethod, I should be able to:
- write self.REQUEST to access the current REQUEST object (I
need to be able to modify the current REQUEST object with
self.REQUEST.set(...))
- or for example self.myzsqlmethod() to call a zsql method object,
right???

Let's suppose that myExtMethod is:

def myExtMethod(self):
    l=[]
    for i in self.l:
        l.append(i+1)
    self.REQUEST.set('l', l)

Now, how can I call this method from DTML?

<!--#var myExtMethod-->
<!--#var "myExtMethod()"-->
<!--#var "myExtMethod(this())"-->

All don't work. I end up in a traceback. "read only class, buffer"

Any hints?

Jepthe CLAIN
Service Informatique CHSR