cancancan

Defines all access rules in one or multiple ability classes, eliminating duplication across controllers, views, and database queries for easier maintenance, as emphasized in the README.

Provides controller helpers like load_and_authorize_resource to automatically load and authorize resources, reducing boilerplate code in RESTful controllers, as shown in the examples.

The accessible_by method retrieves only authorized objects from the database, ensuring users access permitted data without manual filtering, a key feature highlighted in the documentation.

Offers can? and cannot? methods for views and controllers, simplifying inline permission checks in templates and actions, as demonstrated in the README snippets.