Backend

The Chamilo 3.0 backend is built on Symfony 7.4 with Doctrine ORM and API Platform.

• Symfony Architecture — Bundles, services, and the overall backend structure

• Entities and Doctrine — The Doctrine entity classes and how they relate

• Resource System — The ResourceNode/ResourceFile abstraction (key architectural concept)

• Controllers — Controller organization and routing patterns

• Events and Listeners — How Chamilo uses the Symfony event system

• Settings System — The settings schemas in src/CoreBundle/Settings/ and how platform configuration works