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广播消息在发送后不会显示在浏览器控制台中,actioncable和redis development env

actioncable redis ruby-on-rails

0

Lee Eather · 技术社区 · 6 年前

我已经在redis cli上为windows安装了redis服务器

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

开发cable.yml is

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

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

弹出警告,说明页面加载时已连接。在另一个终端运行rails控制台

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

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

**

创建redis server的另一个实例

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

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

它传输到rails服务器和订阅的redis服务器

2 回复 | 直到 6 年前

1

John Baker 6 年前

received 功能。你做到了 recieved 相反。

2

0

Lee Eather 6 年前

改变 notifications.js notfications.coffee 有这样的代码

App.notificationss = App.cable.subscriptions.create "NotificationsChannel",
  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("hello")
  # Called when there's incoming data on the websocket for this channel

不知道为什么普通javascript不起作用。。

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