Ruby on rails 未找到订阅类'；MyChannel'；在行动中

在使用Action Cable时，我遇到了一个问题，每当我运行程序时，我都会收到一个错误，上面写着

Subscription

classnotfound

ConversationChannel

当我试图发送消息时，我得到了这个日志

已成功升级到WebSocket（请求方法：GET， HTTP_连接：升级，HTTP_升级：websocket）订阅类 未找到：“ConversationChannel”无法从执行命令 {“命令”=>“消息”， “标识符”=>“{\“频道\”：“会话频道\”}”， “数据”=>“{\”消息“：[{\”名称“：\”对话id\”，\”值“：\”2\”，{\”名称“：”阿米蒂安id\”，\”值“：”1\”，{\”名称“：”身体“，”值“：”nmm\”，”动作“：”说话“}） [运行时错误-找不到标识符为的订阅： {“频道”：“对话频道”}]： C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/actioncable-5.0.1/lib/action\u-cable/connection/subscriptions.rb:74:in

find'|
C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/actioncable-5.0.1/lib/action\u-cable/connection/subscriptions.rb:53:in

执行\u操作'| C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/actioncable-5.0.1/lib/action\u-cable/connection/subscriptions.rb:17:in

执行_命令'|
C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/actioncable-5.0.1/lib/action\u cable/connection/base.rb:88:in

dispatch\u websocket\u message'| C:/RailsInstaller/Ruby2.3.0/lib/ruby/gems/2.3.0/gems/actioncable-5.0.1/lib/action\u-cable/server/worker.rb:58:in `调用中的块'

ConversationChannel.rb

class ConversationChannel < ApplicationCable::Channel
  def subscribed
    # stream_from "some_channel"
    stream_from "conversations-#{current_amitian.id}"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
    stop_all_streams
  end

  def speak(data)

    message_params = data['message'].each_with_object({}) do |el, hash|
      hash[el.values.first] = el.values.last
    end

    ActionCable.server.broadcast(
      "conversations-#{current_amitian.id}",
      message: message_params
    )
  end 
 end

connection.rb

module ApplicationCable
  class Connection < ActionCable::Connection::Base
    identified_by :current_amitian

    def connect
        self.current_amitian = find_verified_amitian
    end

    protected

    def find_verified_amitian
        if(current_amitian = env['warden'].amitian)
            current_amitian
        else
            reject_unauthorized_connection
        end
    end
  end
end

模块应用程序表
类连接

---

使用上面给出的日志文件，有人能告诉我为什么找不到我的

conversation\u channel.rb

文件吗？

您的文件需要命名为

conversation\u channel.rb

，因为snake\u case是rails对频道文件名的约定。

我通过将频道文件向上移动一个目录解决了这个问题

来自

app/channels/application\u cable/conversation\u channel.rb

---

要

app/channels/conversation\u channel.rb

您必须在客户端（JS）代码中提供完整的模块：：类名。例如，如果您的

ConversationChannel

类位于

ApplicationCable

模块内，那么在您的客户端中，而不仅仅是

ConversationChannel

您需要执行

ApplicationCable:：ConversationChannel

您在帖子中提到的文件名是

ConversationChannel.rb

。不是这样吗？检查文件名是否有任何打字错误？

class ConversationChannel < ApplicationCable::Channel
  def subscribed
    # stream_from "some_channel"
    stream_from "conversations-#{current_amitian.id}"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
    stop_all_streams
  end

  def speak(data)

    message_params = data['message'].each_with_object({}) do |el, hash|
      hash[el.values.first] = el.values.last
    end

    ActionCable.server.broadcast(
      "conversations-#{current_amitian.id}",
      message: message_params
    )
  end 
 end