gistfile1.txt

# in ApplicationController:

  unless Rails.application.config.consider_all_requests_local
    rescue_from Exception, NoMethodError, :with => :render_500
    rescue_from ActiveRecord::RecordNotFound, 
      ActionController::RoutingError, 
      ActionController::UnknownController, 
      ActionController::UnknownAction, :with => :render_404
  end

  private

    def render_404(e)
      log_error(e)
      Exceptional::Catcher.handle_with_controller(e, self, request)
      render :template => "site/404", :layout => 'application', :status => :not_found
    end

    def render_500(e)
      log_error(e)
      Exceptional::Catcher.handle_with_controller(e, self, request)
      render :template => "site/500", :layout => 'application', :status => :internal_server_error
    end