Expose the methods of a class as view callables

[kabhinav]

• Added the functionality to expose the methods of a class as view callables in jsonrpc.py
• Provided the unit and functional tests for the new code.

[mmerickel]

This patch looks really nice (tests too!!). It looks like it goes against the way that Pyramid handles class-based views, however. In Pyramid the add_view method actually supports the attr property which allows you to use a particular method of a class as the method that is called. In this way you are able to do code like the following:

class JSONRPCHandler(object):
    def __init__(self, request):
        self.request = request

    def method(self):
        return {}

config.add_view(JSONRPCHandler, name='say_hello', attr='method', ...)

This is counter to the logic in your mapper which actually scans the targeted class for possible methods based on their name . However, don't worry, the next release of pyramid_rpc will have a functional view mapper. I've actually rewritten the entire JSON RPC API and it's now using a super complicated view mapper hijacked from a different project and that view mapper will actually be enabled by default.