no generar excepciones en rutas inexistentes

app/controllers/api/v1/base_controller.rb

@@ -7,6 +7,8 @@ module Api
       protect_from_forgery with: :null_session
       respond_to :json
 
+      rescue_from ActionController::RoutingError, with: :page_not_found
+
       private
 
       # Realiza la inversa de Site#hostname
@@ -31,6 +33,11 @@ module Api
       def default_site
         Site.first
       end
+
+      # Muestra una página 404
+      def page_not_found
+        render 'application/page_not_found', status: :not_found
+      end
     end
   end
 end

app/controllers/application_controller.rb

@@ -8,6 +8,8 @@ class ApplicationController < ActionController::Base
   before_action :configure_permitted_parameters, if: :devise_controller?
   around_action :set_locale
 
+  rescue_from ActionController::RoutingError, with: :page_not_found
+
   before_action do
     Rack::MiniProfiler.authorize_request if current_usuarie.try(:ends_with?, '@' + ENV.fetch('SUTTY', 'sutty.nl'))
   end