如何在rails/actioncable中向除发件人以外的所有客户端发送消息? [英] how to send message to all client except sender in rails/actioncable?

问题描述

在socket.io中，您可以向除发送者之外的所有客户端发送消息，例如:

in socket.io, you can send message to all client except sender like:

socket.broadcast.emit('user connected');

但是在 rails/actioncable 中，如何做到这一点?

but in rails/actioncable, how to do that?

class BoardChannel < ApplicationCable::Channel
   def subscribed
     stream_from "board:#{params[:board]}"
   end

   def speak
     # client will call @perform('speak')
     result = do_something()
     # how to send 'result' to all client except sender?
   end
 end

推荐答案

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 class BoardChannel < ApplicationCable::Channel
   def subscribed
     stream_from "board:#{params[:board]}"
     stream_from "global_stream"
   end
 end

然后，当您想广播所有用户时，您可以:

Then, when you want to broadcast all users, you can:

ActionCable.server.broadcast "global_stream", "some messages"

当然，您也可以向特殊用户广播.你可以:

Of course, you can also broadcast to special users. you can:

ActionCable.server.broadcast "board:#{params[:board]}", "some messages"

完美！！！

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