小编Joh*_*ulo的帖子

我知道如何工作has_many :posts, dependent: :destroy.如果帖子User或has_many帖子被销毁,所有所属帖子也会被销毁.

但Post模型会发生什么belongs_to :user, dependent: :destroy？我在Rails指南中找到了这个选项,但我找不到如何使用它.

http://guides.rubyonrails.org/association_basics.html

我一直试图让我的头脑绕着动作电缆看似几个月.请帮忙.

我有一个"连接" - 我无法设置,identified_by :current_user因为此端点也需要由使用WebSockets的外部API使用.无法使用浏览器cookie来验证API端点.

文件和支持

连接: /app/channels/application_cable/connection.rb

module ApplicationCable
  class Connection < ActionCable::Connection::Base

  end
end

渠道: /app/channels/application_cable/channel.rb

module ApplicationCable
  class Channel < ActionCable::Channel::Base
  end
end

我有一个特定的访问频道: /app/channels/visits_channel.rb

class VisitChannel < ApplicationCable::Channel
  def subscribed
    stream_from "visit_#{params[:visit_id]}"
  end
end

然后我有我的coffeescript频道: /app/assets/javascripts/channels/visit.coffee

App.visit = App.cable.subscriptions.create { channel: 'VisitChannel', visit_id: '42' },
  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) …