How to list all users online in Ruby on Rails?

Question

Ruby on Rails

There is a chat on web sockets, authorization is done on devise, how can I list all users online? It doesn’t work through current_user, only 1 user is visible, since the each method is not available for him. Thanks in advance!

Answer 1

# app/controllers/application.rb
after_action :user_activity

private

def user_activity
  current_user.try :touch
end

# app/models/user.rb
ONLINE_PERIOD = 5.minutes

scope :online, -> { where('updated_at > ?', ONLINE_PERIOD.ago) }

def online?
  updated_at > ONLINE_PERIOD.ago
end

Usage:
User.online # все пользователи онлайн

Answer 2

Devise is needed for authorization and nothing more. Write your module.