Django channels

[vor...@webscope.io]

Hi,

I'm creating a prototype using Django Channels and I have a question that I haven't sorted out yet. First of all, big thanks to all django-channels developer, this is something I was missing for a long time.

So I have a connection that watches on a model and sends updates to a frontend. It looks something like this:

from channels import route_class
from channels.generic.websockets import WebsocketDemultiplexer

from dataSource.models import DataSourceBinding

class Demultiplexer(WebsocketDemultiplexer):
  consumers = {
    "datasource": DataSourceBinding.consumer,
  }


  def connection_groups(self):
    return ["datasource-updates"]

channel_routing = [
  route_class(Demultiplexer, path="^/datasource/")
]

It works fine as far as some change is done, but I'd like to get initial data for an initial render, is there any good trick how to do this? I do I need to send a message and do it manually somehow? 

Thank you.

[Andrew Godwin]

Yes, you'd need to do this manually - the databinding in Channels right now is very barebones and doesn't handle initial state versus change management. I'd love to eventually get a full event-sourcing solution done, but I have a lot of things I would like to do!

Andrew

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[vor...@webscope.io]

Thanks a lot. Is there any Github issue? Maybe if I have time in a future, I could help out (even though I don't promise anything at the moment, these weeks are crazy :)

----

Btw, if I change m2m relationship for this model, I always get an outdate update -> I'm always one change later on the frontend. Is there any known issue or I should create one?

[Andrew Godwin]

Not yet - feel free to file one and tag/label it as a feature request, but it's unlikely to be done soon as there's a lot of foundational work to be done at the moment :)

Andrew

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