Rails 5.2中的ActionCable不接收数据

Question

一段时间后，我将重新学习ActionCable，并且在一个细节上有些卡住。在日志中，我确实看到：

[ActionCable] Broadcasting to some_channel: "new value"

但是当我广播时，不会调用js中收到的函数。

到目前为止，这是我的代码：

# value_update_channel.rb
class ValueUpdateChannel < ApplicationCable::Channel
  def subscribed
    # stream_from "some_channel"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
  end

  def method1
  end

  def method2
  end
end


# value_update.js
App.value_update = App.cable.subscriptions.create("ValueUpdateChannel", {
  connected: function() {
    // Called when the subscription is ready for use on the server
    console.log("value_update.js subscribed")
  },

  disconnected: function() {
    console.log("value_update.js disconnected")
    // Called when the subscription has been terminated by the server
  },

  received: function(data) {
    console.log("value_update.js data")
    // Called when there's incoming data on the websocket for this channel
  },

  method1: function() {
    return this.perform('method1');
  },

  method2: function() {
    return this.perform('method2');
  }
});


# cable.js
// Action Cable provides the framework to deal with WebSockets in Rails.
// You can generate new channels where WebSocket features live using the `rails generate channel` command.
//
//= require action_cable
//= require_self
//= require_tree ./channels

(function() {
  this.App || (this.App = {});

  App.cable = ActionCable.createConsumer();

}).call(this);

# update action in values_controller.rb
  def update
    respond_to do |format|
      if @value.update(value_params)
        format.html { redirect_to @value, notice: 'Value was successfully updated.' }
        format.json { render :show, status: :ok, location: @value }
        ActionCable.server.broadcast 'some_channel', "new value"
      else
        format.html { render :edit }
        format.json { render json: @value.errors, status: :unprocessable_entity }
      end
    end
  end