class ApplicationController < ActionController::Base # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has. allow_browser versions: :modern helper_method :current_user private def current_user @current_user ||= User.find_by(id: session[:user_id]) if session[:user_id] end def authenticated? current_user.present? end def require_authentication unless authenticated? redirect_to root_path, alert: "You must be signed in to access this page." end end end