Modern Python Standard Library Cookbook

How to do it...

We are going to use WSGIApplication from our previous recipe, but instead of registering a function for a root, we are going to register a particular class able to dispatch based on the request method.

1. All the REST classes we want to implement must inherit from a single RestController implementation:

class RestController:
    def __call__(self, req, resp):
        method = req.environ['REQUEST_METHOD']
        action = getattr(self, method, self._not_found)
        return action(req, resp)

    def _not_found(self, environ, resp):
        resp.status = '404 Not Found'
        return b'{}'  # Provide an empty JSON document

2. Then we can subclass RestController to implement all the specific GET, POST, DELETE, and PUT methods and register the resources on a specific route: ...