Question

我使用动作电缆在Rails中创建套接字api。然后我使用chrome附加组件发送测试请求。我收到了这个错误：

成功升级到WebSocket（REQUEST_METHOD：GET， HTTP_CONNECTION：升级，HTTP_UPGRADE：websocket）无法执行命令来自（{“command”=＆gt;“message”，“data”=＆gt;“{}”， “identifier”=＆gt;“{\”channel \“：\”ApiChannel \“}”}）[RuntimeError - Unable 找到带标识符的订阅：{“channel”：“ApiChannel”}]： /home/lin/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/actioncable-5.1.5/lib/action_cable/connection/subscriptions.rb:76:in find' | /home/lin/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/actioncable-5.1.5/lib/action_cable/connection/subscriptions.rb:53:in perform_action'| /home/lin/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/actioncable-5.1.5/lib/action_cable/connection/subscriptions.rb:17:in execute_command' | /home/lin/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/actioncable-5.1.5/lib/action_cable/connection/base.rb:85:in dispatch_websocket_message'| /home/lin/.rbenv/versions/2.4.2/lib/ruby/gems/2.4.0/gems/actioncable-5.1.5/lib/action_cable/server/worker.rb:58:in `block in invoke'

这是我的频道：

class MessagesChannel < ApplicationCable::Channel
  def subscribed
     stream_from "messages"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
  end

  def chat data
      Message.create! content: data['content']
      ActionCable.server.broadcast 'messages',
        message: message.content
  end
end

如果您对此有任何经验，请帮我找到解决方案。

Answer 1

您的错误说：

Unable to find subscription with identifier: {"channel":"ApiChannel"}]

由于你的代码示例显示它被称为MessagesChannel

，因此

您是否尝试过更改请求？

Action Cable Rails出现错误“RuntimeError - 无法找到带标识符的订阅”

1 个答案: