[Grok-dev] Re: REST branch ready for review

[Jan-Wijbrand Kolman]

Martijn Faassen wrote:
> To actually issue REST requests over a URL, you need to define a REST 
> protocol that uses this layer:

After reading and trying it is not clear to me what the relationship is 
between the "layer" and the "protocol" components. Can you elaborate on 
this?

For example, I played around with this code:

   import grok

   class TestRest(grok.Application, grok.Container):
       pass

   class Index(grok.View):
       pass # see app_templates/index.pt

   class FirstLayer(grok.IRESTLayer):
       pass

   class SecondLayer2(grok.IRESTLayer):
       pass

   class FirstREST(grok.REST):
       grok.context(TestRest)

       def GET(self):
           return 'GET' + repr(self)

   class SecondREST(grok.REST):
       grok.context(TestRest)

       def GET(self):
           return 'SECOND GET' + repr(self)

   class FirstProtocol(grok.RESTProtocol):
       grok.layer(FirstLayer)
       grok.name('foobar')

And now if I go to

   http://localhost:8080/++rest++foobar/mytestrestinstance

I get:

   SECOND GET<grok.meta.SecondREST object at ...>

Why do I get to the "SecondREST" view here?

And shouldn't Grok complain about the fact that I have created two 
layers, but I do not have explicit use a grok.layer() directive in my 
grok.REST subclasses?




regards,
jw