# File lib/action_controller/rescue.rb, line 51 def rescue_action_in_public(exception) #:doc: case exception when RoutingError, UnknownAction then render_text(IO.read(File.join(RAILS_ROOT, 'public', '404.html')), "404 Not Found") else render_text "<html><body><h1>Application error (Rails)</h1></body></html>" end end