Components

This module is a technical foundation rather than a business feature. It introduces a way to organise code into reusable pieces called components, which can be looked up and used at runtime instead of relying only on standard Odoo models.

• It adds an abstract model collection.base that other modules can inherit from to define a 'collection' (for example a backend). On such a collection, a work_on method opens a working session for a given model.
• It adds a component.builder model that, each time Odoo builds its registry, scans installed modules and registers all declared components in a global registry.
• It provides a base component named base, implicitly inherited by every component.
• Components can be filtered by collection, by the model they apply on, and by a 'usage' label, and can be retrieved one by one or as a list.
• Clear errors are raised when no component or several components match a request, and when the registry is not ready yet.

It does not add menus, screens, reports or business rules visible to end users. It touches only the technical models collection.base and component.builder, and depends on the Python library cachetools for caching component lookups.