In my previous post, I wrote about wrapping a legacy application in Silex, using output buffering and Twig. Finally, to allow for better decoupling as well as lazy loading of services, we passed the actual Silex\Application instance as the first argument of legacy controllers.

The first and quite easy way we can enhance our legacy application, is to make use of the request service (which contains all the details about the current request, wrapped inside the Symfony HttpFoundation’s Request class). So, instead of reading directly from $_GET and $_POST, we can change the edit_category() controller into the following: