Awesome! I was looking for this way back in early May and couldn't find it.
Shame on me for not reading the docs.
Robert Roskam
On Thursday, August 18, 2016 at 1:12:26 PM UTC-4, Andrew Godwin wrote:
>
> Hi Robert,
>
> That blog post dates from before the URL/parameter matching in channels.
> You can now do things like this:
>
> chat_routing = [
> route("websocket.connect", chat_connect,
> path=r"^/(?P<room>[a-zA-Z0-9_]+)/$),
> route("websocket.disconnect", chat_disconnect),
> ]
>
> routing = [
> # You can use a string import path as the first argument as well.
> include(chat_routing, path=r"^/chat"),
> ]
>
> You can read more in the docs here:
> http://channels.readthedocs.io/en/latest/getting-started.html#routing
>
> Andrew
>
> On Thu, Aug 18, 2016 at 7:45 AM, Robert Roskam <[email protected]
> <javascript:>> wrote:
>
>> It seems like passing parameters through routing for websockets should be
>> something that we want, but I've been surprised that I've seen absolutely 0
>> comments or questions on this so far.
>>
>> What am I saying specifically? Let me show you from the popular article
>> that jacobian wrote up on Heroku's blog:
>>
>> https://blog.heroku.com/in_deep_with_django_channels_the_future_of_real_time_apps_in_django
>>
>>
>> ____
>>
>> Need to hook each of these channels up in routing.py:
>>
>> from . import consumers
>>
>> channel_routing = {
>> 'websocket.connect': consumers.ws_connect,
>> 'websocket.receive': consumers.ws_receive,
>> 'websocket.disconnect': consumers.ws_disconnect,
>> }
>>
>> Pretty simple stuff: just connect each channel to an appropriate
>> function. Now, let’s look at those functions. By convention we’ll put these
>> functions in aconsumers.py (but, like views, these could be anywhere.)
>>
>> Let’s look at ws_connect first:
>>
>> from channels import Group
>> from channels.sessions import channel_session
>> from .models import Room
>>
>> @channel_session
>> def ws_connect(message):
>> prefix, label = message['path'].strip('/').split('/')
>> room = Room.objects.get(label=label)
>> Group('chat-' + label).add(message.reply_channel)
>> message.channel_session['room'] = room.label
>>
>> ___
>>
>>
>> So everything above is straight from that article. I'd like to focus in
>> on this line:
>>
>> prefix, label = message['path'].strip('/').split('/').
>>
>> It seems like this should not be tightly coupled to this consumer. It
>> seems like this should be handled more like this:
>>
>>
>> from channels.urls import parameters # I know this doesn't exist
>>
>> from. import consumers
>>
>> channel_routing = {
>> parameters('websocket.connect', consumers.ws_connect,
>> path=r'chat/(?P<label>\w+)',
>> 'websocket.receive': consumers.ws_receive,
>> 'websocket.disconnect': consumers.ws_disconnect,
>> }
>>
>>
>> Then you would be able to consume the result this way:
>>
>> from channels import Group
>> from channels.sessions import channel_session
>> from .models import Room
>>
>> @channel_session
>> def ws_connect(message, *args, **kwrags):
>> label = kwargs['label']
>> room = Room.objects.get(label=label)
>> Group('chat-' + label).add(message.reply_channel)
>> message.channel_session['room'] = room.label
>>
>>
>> Thoughts?
>>
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