On Mon, Jun 13, 2011 at 12:38 PM, Jim Fulton <j...@zope.com> wrote: > On Sun, Jun 12, 2011 at 4:48 PM, Chris McDonough <chr...@plope.com> wrote: >> Currently if you ask a registry to singly-adapt an object to an >> interface, and the object you're trying to adapt implements that >> interface, here's what happens: >> >>>>> from zope.component.registry import Components >>>>> c = Components() >>>>> from zope.interface import Interface, implements >>>>> class IFoo(Interface): pass >> ... >>>>> class Foo(object): >> ... implements(IFoo) >> ... >>>>> foo = Foo() >>>>> c.queryAdapter(IFoo, foo) >> <None> >> >> In order to get the object itself back from such an adaptation, you need >> to use the default= argument. >> >>>>> c.queryAdapter(IFoo, foo, default=foo) >> <__main__.Foo object at 0x24a3910> >> >> This seems slightly inconsistent with the adaptation worldview imposed >> by getAdapter/queryAdapter. I think it would be more consistent if >> "c.queryAdapter(IFoo, foo)" returned foo if foo already implemented IFoo >> and there was no other more specific adapter registered for the IFoo/foo >> pair in the registry, no? > > I don't know what getAdapter/queryAdapter you're referring to in > "This seems slightly inconsistent with the adaptation worldview imposed > by getAdapter/queryAdapter." > > Do you mean " This seems slightly inconsistent with the adaptation > worldview imposed > by interface __call__." ?
By the later messages, I can see that that is what you meant to say. Jim -- Jim Fulton http://www.linkedin.com/in/jimfulton _______________________________________________ Zope-Dev maillist - Zope-Dev@zope.org https://mail.zope.org/mailman/listinfo/zope-dev ** No cross posts or HTML encoding! ** (Related lists - https://mail.zope.org/mailman/listinfo/zope-announce https://mail.zope.org/mailman/listinfo/zope )
