Document the flow of a Front Controller and a BackOffice Controller ?

I'm considering the idea of describing what happens behind the curtains when a HTTP request hits PrestaShop.

So I would describe

• how request is matched against an URL and dispatched
• how Controller is located and loaded
• the Controller different steps (init, bootstrap, layout ...)
• how Smarty templates are loaded and rendered

The main goal behind that is to help answer the following question: "As a module developer, I want to modify the Smarty template for AdminXXXController, where can I find it ? how is it loaded ?"

I want to highlight the different kind of files a developer must expect to modify when working on a FO page or a BO page. "My template will go there, my controller will go there, if I need a service I'll put it there ..."

wdyt @PrestaShop/prestashop-core-developers ?

Start by tracing the HTTP request through URL matching and dispatch, controller loading, controller lifecycle steps, and Smarty template rendering. The documentation should explain where module developers find Front Office and Back Office templates, controllers, and services, and how those templates are loaded. The issue names no specific files or tests, so the relevant entry points must first be located.