Chris Withers wrote:
Chris Withers wrote:
Jean-Marc Orliaguet wrote:
once you have that utility / adapter you should be able to call it like:
converter = getAdapterFor(123, type=IToStringConverter)
strResult = converter.convert(123)
Not quite, what I'm looking to do is more along the lines of:
mystr = getAdapter(123,str)
OK, less talk, more do... and when I stop worrying about it, it all gets
very easy:
>>> from zope.component import provideAdapter
>>> provideAdapter(str,(int,),str)
>>> from zope.component import getAdapter
>>> getAdapter(123,str)
'123'
Yay! That's _exactly_ what I want.
And that's exactly what I meant -- and wrote about half way up the
thread. :)
Anyway, now all excited, I tried this:
>>> def to_date(value):
... try:
... return DateTime(value)
... except:
... return None
...
>>> provideAdapter(to_date,(str,int),DateTime)
This registers a multi adapter for (a_string, an_integer), like views
are multi-adapters for (context, request). You want to say:
>>> provideAdapter(to_date, (str,), DateTime)
>>> provideAdapter(to_date, (int,), DateTime)
>>> getAdapter('2006/11/16',DateTime)
Traceback ...
...
zope.component.interfaces.ComponentLookupError:
('2006/11/16', <class DateTime.DateTime.DateTime at 0x00E73600>, u'')
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