class ApplicationController < ActionController::Base # protect_from_forgery with: :exception helper_method :current_user, :logged_in? def login(user) session[:session_token] = user.reset_session_token! @current_user = user end def logout current_user.reset_session_token! session[:session_token] = nil @current_user = nil end def current_user return nil unless session[:session_token] @current_user ||= User.find_by(session_token: session[:session_token]) end def logged_in? !!current_user end end