[Zope3-dev] adaptation based on class rather than interface

[Martijn Faassen]

Chris Withers wrote:
> Jim Fulton wrote:
>>> <adapter
>>>     for=".myclasses.MyClass"
>>>     provides=".interfaces.ISomething"
>>>     factory=".adapters.MyAdapter"
>>>     />
>>
>> I think it is a fine idea.  That's why it has been supported for
>> a long time.  You can register adapters and views (which, of course
>> are adapters) for classes as well as interfaces.
> 
> Hmm, just to be clear:
> 
> class A: pass
> 
> class B(A): pass
> 
> <adapter
>     for="A"
>     provides=".interfaces.ISomething"
>     factory=".adapters.MyAdapter"
>     />
> 
> x = ISomething(B)
> 
> ...will work, right?
> 

Yes, that should work; it works for us this way in Grok. :)

As I said elsewhere, the only thing blocking usage of this in ZCML is 
some directive which at least used to complain when you passed in a 
class. That would be a bug.

Regards,

Martijn