rails g channel tv

app/assets/javascripts/channels/tv.coffee

@@ -0,0 +1,14 @@
+App.tv = App.cable.subscriptions.create "TvChannel",
+  connected: ->
+    # Called when the subscription is ready for use on the server
+
+  disconnected: ->
+    # Called when the subscription has been terminated by the server
+
+  received: (data) ->
+    # Called when there's incoming data on the websocket for this channel
+    console.info(data)
+
+  put_message: () ->
+    @perform("put_message")
+    return

app/channels/application_cable/connection.rb

@@ -1,4 +1,15 @@
 module ApplicationCable
   class Connection < ActionCable::Connection::Base
+    identified_by :current_user
+
+    def connect
+      self.current_user = find_verified_user
+    end
+
+    protected
+
+      def find_verified_user # this checks whether a user is authenticated with devise
+        env["warden"].user || reject_unauthorized_connection
+      end
   end
 end

app/channels/tv_channel.rb

@@ -0,0 +1,15 @@
+class TvChannel < ApplicationCable::Channel
+  # クライアントと接続された時
+  def subscribed
+    stream_from "tv:message"
+  end
+
+  # クライアントとの接続が解除された時
+  def unsubscribed
+    # Any cleanup needed when channel is unsubscribed
+  end
+
+  def put_message
+    TvChannel.broadcast_to("message", "hello")
+  end
+end

app/controllers/pages_controller.rb

@@ -6,4 +6,7 @@ def index
 
   def dashboard
   end
+
+  def tv
+  end
 end

app/views/pages/tv.html.erb

@@ -0,0 +1,2 @@
+<h1>Pages#tv</h1>
+<p>Find me in app/views/pages/tv.html.erb</p>

config/routes.rb

@@ -3,6 +3,7 @@
 Rails.application.routes.draw do
   root "pages#index"
   get "dashboard", to: "pages#dashboard"
+  get "tv", to: "pages#tv"
 
   resources :users, only: [:show, :edit, :update], path: "/", param: :name, constraints: { name: /@\w+/ } do
     resources :meals, param: :date, constraints: { date: %r{\d{4}\/\d{2}\/\d{2}} } do