Hi Dan,
An initial glance shows that you might be passing the arguments wrong to
Multiplexer.group_send(group_name, stream, payload) - I'm not sure why you
are using multiplexer.__class__.__name__ as the group name, but the group
name you configured in connection_groups is updatedb_results, and the
stream you're listening to in the JS client is also updatedb_results, so
you should set both of these to that value.
Andrew
On Tue, Apr 4, 2017 at 9:55 AM, Dan Alderman <
daniel.thomas.alder...@gmail.com> wrote:
> Hi guys,
>
> Been trying to get my head around this for ages now but still no luck,
> hopefully
> someone can point me in the right direction.
>
> I'm trying to set up a Demultiplexer with a JsonWebsocketConsumer that sends
> to a group. (There is only one stream in the Demultiplexer at the moment, but
> I intend to add more).
>
> The prints in each of the functions work when I interact with my app in
> the web browser, but I'm having trouble getting a response in the browser
> via websockets.
>
> If I user multiplexer.send() then it works, but it only goes to a single
> connection
> (as you'd expect).
>
> consumers.py
>
> from channels.generic.websockets import JsonWebsocketConsumer,
> WebsocketDemultiplexer
>
> class DatabaseUpdateConsumer(JsonWebsocketConsumer):
> strict_ordering = True
>
> def connection_groups(self, **kwargs):
> return ["updatedb_results"]
>
> def connect(self, message, multiplexer, **kwargs):
> print "Connected!"
> multiplexer.group_send(multiplexer.__class__.__name__,
> self.connection_groups(), {'text': "Connected!"})
>
> def disconnect(self, message, multiplexer, **kwargs):
> print("Stream %s is closed" % multiplexer.stream)
>
> def receive(self, content, multiplexer, **kwargs):
> print "Message received by server!"
> multiplexer.group_send(multiplexer.__class__.__name__,
> self.connection_groups(), {'text': "Message received by server!"})
>
> class Demultiplexer(WebsocketDemultiplexer):
>
> consumers = {
> "updatedb_results": DatabaseUpdateConsumer,
> }
>
> index.html
>
> {% extends "base.html" %}
>
> {% block title %}Test Dashboard{% endblock %}
>
> {% block content %}
> <div id="currentCount">{{ job_detail|length }}</div>
> <br>
> {% for line in job_detail %}
> <div id="{{ line.id }}">{{ line.job_number }}</div>
> {% endfor %}
> {% endblock %}
>
> {% block javascript %}
> <script>
> const webSocketBridge = new channels.WebSocketBridge();
> webSocketBridge.connect("ws:/development01:8000/ws/");
> webSocketBridge.listen();
> webSocketBridge.demultiplex('updatedb_results', function(data, stream) {
> console.log(data);
> });
> </script>
> {% endblock %}
>
> routing.py
>
> from channels import route_class
> from dashboard.consumers import Demultiplexer
>
> channel_routing = [
> route_class(Demultiplexer, path="^/ws/"),
> ]
>
> Can anyone tell me where I'm going wrong?
>
> Thanks,
>
> Dan
>
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