ruby-on-rails - 广播消息发送后不会在浏览器控制台显示，actioncable和redis开发环境

Question

我已经为从 redis cli 运行服务器的 windows 设置了 redis

C:\program files\redis>redis-cli
127.0.0.1:6379>

开发 cable.yml 是

development:
  adapter: redis
  url: redis://127.0.0.1:6379/0

通知频道 rb

class NotificationsChannel < ApplicationCable::Channel
  def subscribed
    stream_from "notifications_#{current_user.id}"
  end
end

启动 Rails 服务器并加载页面，服务器打印

Started GET "/cable/" [WebSocket] for ::1 at 2018-09-29 13:07:17 +1000
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: keep-alive, Upgrade, HTTP_UPGRADE: websocket)
Registered connection (Z2lkOi8vcGVvcGxlcy9Vc2VyLzUwMQ)
NotificationsChannel is transmitting the subscription confirmation
NotificationsChannel is streaming from notifications_501

页面上的通知.js 是

App.notifications = App.cable.subscriptions.create("NotificationsChannel", {
  connected:  function() {
    alert("hello")
  },
  recieved: function(data) {
    console.log(data)
  }
});

弹出警报说页面加载时已连接。在另一个终端运行 rails 控制台

irb> ActionCable.server.broadcast("notifications_501", body: "hello")

回顾 Rails 服务器输出

NotificationsChannel transmitting {"body"=>"hello"} (via streamed from notifications_501)

但是控制台没有显示 JSON 对象？

**编辑**

创建另一个redis服务器实例

C:\program files\redis>redi-cli
127.0.0.1:6379>subscribe "notifications_501"
1)"subscribe"
2)"notifications_501"
3)(integer) 1

打开另一个cli

127.0.0.1:6379>publish "notifications_502" "{\"body\":\"hello\"}"

它同时传输到 rails 服务器和订阅的 redis 服务器

NotificationsChannel transmitting {"body"=>"hello"} (via streamed from notifications_501)

标签： ruby-on-railsredisactioncable

Answer 1

我认为它在您第一次尝试时对您不起作用的原因可能是因为命名received函数时的拼写错误。recieved相反，你做到了。