Il 02/07/2010 11:43, Gilles Lenfant ha scritto:
> Le 2 juil. 2010 à 10:21, Yuri a écrit :
>
>    
>> Hi!
>>
>>   I would like to add some method to an existing content type class.
>>
>>   What I've done now is using schemaextender and a custom marker
>> interface to a Document:
>>
>> class DocumentExtender(object):
>>      """Adapter that adds a Ripped Off From Channel field to News Items."""
>>      adapts(IDocumentExtended)
>>      implements(IOrderableSchemaExtender)
>>
>>      _fields = [
>>
>> Schemaextender can add new fields, I would like now to add some new
>> methods. From my understanding of ZCA, I've to write some adapter for
>> the custom interface. Is it correct? Is there some code/product about
>> this issue I can read from?
>>      
> An adapter does not add any method to an existing class. Adapters work on 
> objects and not on classes.


  Yes, to the object. I would like to have a .my_method() on objects 
with that marker interface set. So adapter should be the way.
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