3 files changed, 30 insertions, 0 deletions
diff --git a/actioncable/lib/action_cable/subscription_adapter/channel_prefix.rb b/actioncable/lib/action_cable/subscription_adapter/channel_prefix.rb
new file mode 100644
index 0000000000..8b293cc785
--- /dev/null
+++ b/actioncable/lib/action_cable/subscription_adapter/channel_prefix.rb
@@ -0,0 +1,26 @@
+module ActionCable
+  module SubscriptionAdapter
+    module ChannelPrefix # :nodoc:
+      def broadcast(channel, payload)
+        channel = channel_with_prefix(channel)
+        super
+      end
+
+      def subscribe(channel, callback, success_callback = nil)
+        channel = channel_with_prefix(channel)
+        super
+      end
+
+      def unsubscribe(channel, callback)
+        channel = channel_with_prefix(channel)
+        super
+      end
+
+      private
+        # Returns the channel name, including channel_prefix specified in cable.yml
+        def channel_with_prefix(channel)
+          [@server.config.cable[:channel_prefix], channel].compact.join(":")
+        end
+    end
+  end
+end
diff --git a/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb b/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
index c3018c5281..56b068976b 100644
--- a/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/evented_redis.rb
@@ -11,6 +11,8 @@ EventMachine.kqueue if EventMachine.kqueue?
 module ActionCable
   module SubscriptionAdapter
     class EventedRedis < Base # :nodoc:
+      prepend ChannelPrefix
+
       @@mutex = Mutex.new
 
       # Overwrite this factory method for EventMachine Redis connections if you want to use a different Redis connection library than EM::Hiredis.
diff --git a/actioncable/lib/action_cable/subscription_adapter/redis.rb b/actioncable/lib/action_cable/subscription_adapter/redis.rb
index 62bd284a6b..41a6e55822 100644
--- a/actioncable/lib/action_cable/subscription_adapter/redis.rb
+++ b/actioncable/lib/action_cable/subscription_adapter/redis.rb
@@ -6,6 +6,8 @@ require "redis"
 module ActionCable
   module SubscriptionAdapter
     class Redis < Base # :nodoc:
+      prepend ChannelPrefix
+
       # Overwrite this factory method for redis connections if you want to use a different Redis library than Redis.
       # This is needed, for example, when using Makara proxies for distributed Redis.
       cattr_accessor(:redis_connector) { ->(config) { ::Redis.new(url: config[:url]) } }