[Grok-dev] how should we compute URLs for transient objects?

Brandon Craig Rhodes brandon at rhodesmill.org
Thu Sep 6 23:44:58 EDT 2007

Kevin Teague <kevin at bud.ca> writes:

>> class PersonLocation(grok.Adapter):
>>     grok.context(Person)          # or "IPerson", if one gets fancy
>>     grok.provides(ILocation)
>>     def __init__(self, context):
>>         self.__parent__ = PersonContainer()
>>         self.__name__ = str(context.id)
> This example is close to working, but __parent__ *must* be a
> reference to an object in the containment heirarchy.

Yes, I caught that problem before posting it, but since Zope ignores
the adapter anyway, it didn't seem worth fixing yet. :-) First I need
to understand whether AbsoluteURL's failure to adapt its context to
ILocation is a bug, or something I don't understand about the whole
Zope approach to things (I hope very much that it's the former, and,
if so, am willing to submit a patch myself).

>     self.__parent__ = grok.getSite()['people']

Wow!  I didn't know Grok had a "getSite()" method!  That's exactly
what I needed last night when, after patching my own version of
AbsoluteURL, I never could find a way for my Adapter to reference the
site itself.

I have just tried your suggestion, and it works perfectly.  Thank you
for your help!

Brandon Craig Rhodes   brandon at rhodesmill.org   http://rhodesmill.org/brandon

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