Does Ruby on Rails Work With Auth0?

# Gemfile
gem 'auth0-rails'

# config/initializers/auth0.rb
Auth0Rails.configure do |config|
  config.client_id = ENV['AUTH0_CLIENT_ID']
  config.client_secret = ENV['AUTH0_CLIENT_SECRET']
  config.domain = ENV['AUTH0_DOMAIN']
  config.redirect_uri = ENV['AUTH0_CALLBACK_URL']
end

# config/routes.rb
get '/auth/callback', to: 'auth0#callback'
get '/logout', to: 'auth0#logout'

# app/controllers/auth0_controller.rb
class Auth0Controller < ApplicationController
  def callback
    user_info = request.env['omniauth.auth']
    session[:user] = user_info
    redirect_to root_path
  end

  def logout
    session.clear
    redirect_to "https://#{ENV['AUTH0_DOMAIN']}/v2/logout?client_id=#{ENV['AUTH0_CLIENT_ID']}&returnTo=#{root_url}"
  end
end

# app/controllers/application_controller.rb
before_action :authenticate_user!

def authenticate_user!
  redirect_to '/auth/login' unless session[:user]
end