Added Byebug

app/channels/application_cable/connection.rb

@@ -1,4 +1,21 @@
 module ApplicationCable
   class Connection < ActionCable::Connection::Base
+    identified_by :current_user
+    def connect
+      self.current_user = find_verified_user
+    end
+
+    def find_verified_user
+      if cookies.signed['user_token'] != nil
+        user = User.where(persistence_token: cookies.signed['user_token'])
+        if user.any?
+          return user.first
+        else
+          return nil
+        end
+      else
+        return nil
+      end
+    end
   end
 end

app/channels/room_channel.rb

@@ -1,5 +1,6 @@
 # This is a general channel connected to all active session
 class RoomChannel < ApplicationCable::Channel
+
   def subscribed
     stream_from "room_channel"
   end
@@ -9,6 +10,8 @@ def unsubscribed
   end
 
   def speak(message)
-    ActionCable.server.broadcast 'room_channel', message
+    if current_user && current_user.role == "admin"
+      ActionCable.server.broadcast 'room_channel', message
+    end
   end
 end

app/controllers/application_controller.rb

@@ -91,6 +91,12 @@ def current_user
       # Ensures no code will use old @current_user info. Treat the user
       # as anonymous (until the login process sets @current_user again):
       @current_user = nil
+
+    end
+
+    cookies.signed["user_token"] = nil
+    if @current_user
+      cookies.signed["user_token"] = @current_user.role
     end
     @current_user
   end
@@ -102,6 +108,7 @@ def require_user
       redirect_to login_url
       false
     end
+    return current_user
   end
 
   def require_no_user