Allow custom JSONEncoder subclasses for JSON-RPC endpoints about pyramid_rpc HOT 3 CLOSED

There is code I wrote in Pyramid's master to do this. I can probably strip it out and provide the JsonRpcRenderer API with an add_adapter method and a user-specified serializer (defaulting to json.dumps). I'll have to think about how to allow the user to do it though.

Probably via

renderer = JsonRpcRenderer()
renderer.add_adapter(MyType, lambda v: str(v))
config.add_renderer('myjsonrpc', renderer)
config.add_jsonrpc_endpoint('foo', '/api/jsonrpc', default_renderer='myjsonrpc')

Normally renderers in Pyramid are specified on the view (method), but a default could be provided on the route (endpoint).

from pyramid_rpc.

Yeah, I think configuring it on a per-endpoint basis makes sense. I was trying to figure out how to do that myself, but I don't think I understand the Pyramid architecture well enough to make a patch :/

from pyramid_rpc.

Added this feature in 634223c. You can just add a new renderer to Pyramid and specify it on your endpoint like so

def jsonrpc_renderer(info):
    def _render(value, system):
        return json.dumps(value)
    return _render

config.add_renderer('myjsonrpc', jsonrpc_renderer)
config.add_jsonrpc_endpoint('rpc', '/api/jsonrpc', default_renderer='myjsonrpc')

If you want to use Pyramid 1.4's cool new JSON renderer which supports adapters for custom data types, just do

from pyramid.renderers import JSON

jsonrpc_renderer = JSON()
jsonrpc_renderer.add_adapter(lambda v: v.isoformat(), datetime.datetime)

config.add_renderer('myjsonrpc', jsonrpc_renderer)
config.add_jsonrpc_endpoint('rpc', '/api/jsonrpc', default_renderer='myjsonrpc')

from pyramid_rpc.