[Grok-dev] extending grok classes (grok.JSON)

Uli Fouquet uli at gnufix.de
Sun Mar 10 10:49:51 UTC 2013

Hi there,

On Sun, 10 Mar 2013 12:44:00 +0530 Joshua Immanuel wrote:

> How do I add behavior to existing grok classes, especially grok.JSON.
> I tried sub-classing like:
>         class MyJSON(grok.JSON):
>             def __call__(self):
>                 # do something
>                 return super(MyJSON, self).__call__()

Try `grok.baseclass()`:

        class MyJSON(grok.JSON):
            def __call__(self):
                # do something
                return super(MyJSON, self).__call__()

This way you tell Grok that the respective class acts as a base for
'real' components that provide JSON stuff (and should not be grokked).
Derived classes, however, will still be grokked.

>         class MyAPI(MyJSON):
>                 def service_a(self):
>                         return {'something' : 'blah'}
> martian is complaining about lack of configuration for MyJSON. What is
> the right way of doing this?

Using grok.baseclass(), I think.

Best regards,


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: OpenPGP digital signature
URL: <http://mail.zope.org/pipermail/grok-dev/attachments/20130310/cf7c99e6/attachment.sig>

More information about the Grok-dev mailing list