[Zope-dev] Calling a DTML Method from Python

[Martijn Pieters]

At 15:58 08/09/99 , Martijn Faassen wrote:
>Hi there,
>
>I'm attempting to write a product that calls a DTML method during its
>processing. The product keeps a table of DTML method objects and has a
>method that determines what DTML method to call, and then calls it. I'm
>not sure _how_ I should call a DTML method object, though.
>
>Example:
>
>class Foo:
>     def __init__(self):
>         self.map = {}
>
>     def setMap(self, keyword, method):
>         self.map[keyword] = method
>
>     def render(self, keyword):
>         return self.map[keyword]() # ?? What arguments are needed?
>
>Then, from DTML:
><dtml-call "foo.setMap('hey', somemethod)">
>...
><dtml-var "foo.render('hey')">
>
>Is this possible at all? I assume render() actually needs extra
>arguments to make this work, but which?
>
>The DTML Method source defines this:
>
>def __call__(self, client=None, REQUEST={}, RESPONSE=None, **kw):
>
>What does the client argument stand for? Anything else I should watch
>out for?

Client is the namespace object. See the 
DocumentTemplate.DT_String.String.__call__ method for more information. 
Don't you love deep inheritance?

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Martijn Pieters, Web Developer
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