ActionCableでSpeakがUndefined出ます。

Question

###前提・実現したいこと
製作中のアプリにActionCableでリアルタイム通信を実装したいです。

###発生している問題・エラーメッセージ

単なるJavaScriptのエラーだと思うんですが、、、

RoomChannel#speak({"message"=>"Hello world"})
Could not execute command from {"command"=>"message", "identifier"=>"{\"channel\":\"RoomChannel\"}", "data"=>"{\"message\":\"Hello world\",\"action\":\"speak\"}"}) [NameError - undefined local variable or method `message' for #<RoomChannel:0x000000055f4b50>]: /home/ubuntu/workspace/app/channels/room_channel.rb:12:in `speak' | /usr/local/rvm/gems/ruby-2.3.0/gems/actioncable-5.0.0/lib/action_cable/channel/base.rb:260:in `public_send' | /usr/local/rvm/gems/ruby-2.3.0/gems/actioncable-5.0.0/lib/action_cable/channel/base.rb:260:in `dispatch_action' | /usr/local/rvm/gems/ruby-2.3.0/gems/actioncable-5.0.0/lib/action_cable/channel/base.rb:165:in `block in perform_action' | /usr/local/rvm/gems/ruby-2.3.0/gems/activesupport-5.0.0/lib/active_support/notifications.rb:166:in `instrument'

###該当のソースコード

【room_channel.rb】

# Be sure to restart your server when you modify this file. Action Cable runs in a loop that does not support auto reloading.
class RoomChannel < ApplicationCable::Channel
  def subscribed
    stream_from "room_channel"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
  end

  def speak
    ActionCable.server.broadcast 'room_channel', message: data['message']
  end
end

【rooms.coffee】

App.room = App.cable.subscriptions.create "RoomChannel",
  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) ->
    alert data['message']

  speak: (message) ->
    @perform 'speak', message: message

###補足情報(言語/FW/ツール等のバージョンなど)
この部分を参考にしてます。アラートが僕の場合なりません。

ご経験ある方、お力を貸してください。

Answer 1

speakメソッドに引数を指定していないのが原因でした。

def speak  →   def speak(data)