This demo wires together three small, focused bundles to build a full CRUD admin section from plain YAML configuration — no scaffolding, no generated controllers:

• Sidus/AdminBundle — declares admin sections (routes, actions, templates, forms) from configuration.
• Sidus/DataGridBundle — renders sortable, paginated, filterable listings.
• Sidus/FilterBundle — turns query parameters into Doctrine ORM filters.

The News entity below is managed entirely through config/admin/News.yaml and config/datagrid/News.yaml.