resources.py 文件源码

def get_via_uri(self, uri, request=None):
        """
        This pulls apart the salient bits of the URI and populates the
        resource via a ``obj_get``.

        Optionally accepts a ``request``.

        If you need custom behavior based on other portions of the URI,
        simply override this method.
        """
        prefix = get_script_prefix()
        chomped_uri = uri

        if prefix and chomped_uri.startswith(prefix):
            chomped_uri = chomped_uri[len(prefix)-1:]

        try:
            view, args, kwargs = resolve(chomped_uri)
            resource_name = kwargs['resource_name']
            resource_class = self.resource_mapping[resource_name]
        except (Resolver404, KeyError):
            raise NotFound("The URL provided '%s' was not a link to a valid resource." % uri)

        parent_resource = resource_class(api_name=self._meta.api_name)
        kwargs = parent_resource.remove_api_resource_names(kwargs)
        bundle = Bundle(request=request)
        return parent_resource.obj_get(bundle, **kwargs)