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

[Uli Fouquet]

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):
            grok.baseclass()
            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,

-- 
Uli

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