On Fri, 25 Aug 2000, Daniel Rusch wrote:
> def __call__(self, client=None, REQUEST={}, RESPONSE=None, **kw):
> print 'Sub Class __call__'
> DTMLMethod.__call__(self, client, REQUEST, RESPONSE, kw)
[...]
> when I view the BasicMethod in Zope, I get:
> Error Type: TypeError
> Error Value: too many arguments; expected 4, got 5
>
> I believe that I need the self arg, if I remove it I get an unbound
> python method error.
>
> Any thoughts???
DTMLMethod's __call__ only takes three arguments: client, REQUEST,
and RESPONSE. **kw turns any additional keyword arguments (x=y)
into a dictionary kw. To pass the ones your __call__ receives on
to DTMLMethod's __call__, you have to turn them back into a keyword
list somehow. A quick check of the python language reference
doesn't reveal any special syntactic sugar for doing this. However,
in the definition of __call__ in DTMLMethod I found this:
r = apply(HTML.__call__, (self, client, REQUEST), kw)
Reading about apply in the python docs, it's obviously designed to
do just the job you need <grin>.
--RDM
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