Я пытаюсь заставить пользователя подключить пользователя к dialog_channel, и я получаю:
Could not execute command from ({"command"=>"subscribe", "identifier"=>" {\"channel\":\"ConversationChannel\"}"}) [NoMethodError - undefined method `id' for nil:NilClass]: /mnt/c/rails_apps/Picnotes/app/channels/conversation_channel.rb:6:in `subscribed' |
Я попытался жестко закодировать current_user.id в 1 или 2, и я получил:
Started GET "/cable" for 127.0.0.1 at 2019-01-22 22:06:36 -0800
Started GET "/cable/" [WebSocket] for 127.0.0.1 at 2019-01-22 22:06:36 -0800
Successfully upgraded to WebSocket (REQUEST_METHOD: GET, HTTP_CONNECTION: Upgrade, HTTP_UPGRADE: websocket)
ConversationChannel is transmitting the subscription confirmation
ConversationChannel is streaming from conversations-1
Мой код ниже:
# Be sure to restart your server when you modify this file. Action Cable runs in a loop that does not support auto reloading.
class ConversationChannel < ApplicationCable::Channel
# Create a unique channel for each user.
...
def subscribed
stream_from "conversations-#{current_user.id}"
end
# Removes all connected connections.
def unsubscribed
stop_all_streams
end
...
end
end
module ApplicationCable
class Connection < ActionCable::Connection::Base
identified_by :current_user
def connect
self.current_user = current_user
end
end
end
class ApplicationController < ActionController::Base
protect_from_forgery with: :exception
before_action :initiate_instance_variables
...
def current_user
@current_user ||= User.find_by(id: session[:user_id])
end
helper_method :current_user
...
end
Я ожидаю, что #{current_user.id}
будет идентификатором пользователя (константа: 1 или 2), но объект всегда равен nil.