javascript - Rails 5 Action Cable 具有多个参数

Question

David has a great video on how to use Action Cable for Rails 5 ，对我来说，我使用的是 Rails 5 上的 beta 3 版本。

问题是，Action Cable 是否仅适用于只有一个参数作为数据传递的聊天应用程序？我可以向 speak 传递多个参数吗？

RoomChannel(咖啡):

App.room = App.cable.subscriptions.create "RoomChannel",
  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 data['message']
    # Called when there's incoming data on the websocket for this channel

  speak: (message) -> # Could I pass in more than one params?
    @perform 'speak', message: message

room_channel.rb:

# Be sure to restart your server when you modify this file. Action Cable runs in a loop that does not support auto reloading.
class RoomChannel < ApplicationCable::Channel
  def subscribed
    stream_from "room_channel"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
  end

  def speak(data)
    ActionCable.server.broadcast 'room_channel', message: data['message']
  end
end

如果我可以传入多个参数，它适合这里的哪里:

App.room.speak("foo bar"); # one param so far here.

编辑:

我现在收到两个对象的警报:[object object]

App.room.speak(
    {
      data1: "Data 1 mate",
      data2: "Data 2 mate"
    }
  )

房间.咖啡:

received: (data1, data2) ->
    alert data1['message']

room_channel.rb:

def speak(data1, data2)
    ActionCable.server.broadcast 'room_channel', message: data1['message'], data2['message']
  end

控制台:

RoomChannel#speak({"message"=>{"data1"=>"Data 1 mate", "data2"=>"Data 2 mate"}})

Answer 1

要将另一个参数传递给可操作服务器，您可以传递 Javascript 对象。

然后在服务器端，这个 Javascript 对象被表示为一个哈希值。

示例:

客户端

App.room.speak(
    {
      param1: "Data 1 mate",
      param2: "Data 2 mate"
    }
  )

服务器端

def speak(data)
    ActionCable.server.broadcast 'room_channel', param1: data['param1'], param2: data['data2']
  end

然后返回给客户端

received: (data) ->
    alert data['param1']
    alert data["param2"]