X-Cart v5.5 is built on Symfony v5.4 and uses a unique add-on system with multiple inheritance via code generation.
The application startup and basic service configuration (e.g., database access, caching, template, sessions and queue processing) are handled by Symfony. After that, all processes are managed by X-Cart, which delivers the final result to the end user.
Since the X-Cart core is not a Symfony service, it is not possible to use Symfony DI efficiently. Instead, container access is accomplished via the Service Locator:
\XCart\Container::getContainer– for general container access\XCart\Container::getServiceLocator– for specific services
In some cases, it is necessary to define services as public.
Add-ons can contain X-Cart scaffolding code and act as bundles, allowing to create new services and adjust functionality using Symfony's features.
The core code is divided into three parts:
- Scaffolding code:
classes - Symfony-compatible code:
src - Legacy service code:
Includes
The add-on code consists of a pure scaffolding code, that can be efficiently used as Symfony code (services, decorators, etc.). Add-ons can also include third-party libraries that are not used for scaffolding and are not a part of the Symfony core.
