lib/action_controller/metal/rescue.rb



# frozen_string_literal: true

module ActionController # :nodoc:
  # = Action Controller \Rescue
  #
  # This module is responsible for providing
  # {rescue_from}[rdoc-ref:ActiveSupport::Rescuable::ClassMethods#rescue_from]
  # to controllers, wrapping actions to handle configured errors, and
  # configuring when detailed exceptions must be shown.
  module Rescue
    extend ActiveSupport::Concern
    include ActiveSupport::Rescuable

    # Override this method if you want to customize when detailed
    # exceptions must be shown. This method is only called when
    # +consider_all_requests_local+ is +false+. By default, it returns
    # +false+, but someone may set it to <tt>request.local?</tt> so local
    # requests in production still show the detailed exception pages.
    def show_detailed_exceptions?
      false
    end

    private
      def process_action(*)
        super
      rescue Exception => exception
        request.env["action_dispatch.show_detailed_exceptions"] ||= show_detailed_exceptions?
        rescue_with_handler(exception) || raise
      end
  end
end