这是我的宝石

# lib/my_channel.rb
class MyChannel < ActionCable::Channel::Base
  def wait(data)
    # logic ...
  end
end

# lib/engine.rb
module MyApp
  class Engine < ::Rails::Engine
    isolate_namespace MyApp
  end
end

然后我将gem添加到我的主应用程序Gemfile中,运行bundle install,启动控制台并运行MyChannel.哪个不产生和错误,这意味着通道被正确包括在内.

然后我将其添加到我的主要应用程序

// application.js
var socket = "ws://localhost:3000/cable";
var cable = ActionCable.createConsumer(socket);
cable.subscriptions.create({ "channel": "MyChannel" },{
  received: function(){
    // ...
  }
});

但是我收到这个错误

Subscription class not found ({"command"=>"subscribe","identifier"=>"{\"channel\":\"MyChannel\"}"})

我失踪了什么