count-anything/app/channels/count_channel.rb

class CountChannel < ApplicationCable::Channel

  def subscribed
    stream_from "counts"
  end

  def unsubscribed
    # Any cleanup needed when channel is unsubscribed
  end

  def plus_one(params)
    unless current_user.nil? || params["id"].nil?
      total = Total.find(params["id"])
      unless total.nil?
        total.update(count: total.count + 1)
      end
    end
  end

  def minus_one(params)
    unless current_user.nil? || params["id"].nil?
      total = Total.find(params["id"])
      unless total.nil?
        total.update(count: total.count - 1)
      end
    end
  end

  def self.update(total)
    ActionCable.server.broadcast("counts", {"update": {
      id: total.id,
      name: total.name,
      count: total.count,
      edit_link: Rails.application.routes.url_helpers.edit_count_path(total)
    }})
  end

  def self.destroy(total)
    ActionCable.server.broadcast("counts", {"destroy": total.id})
  end

end