Mongoid::ACL allows you to easily add access control lists to your Mongoid::Document objects. This implementation assumes you need to check acl's when loading an object, it's not efficient if you want to retrieve all the objects an actor has rights on (though it could be if they are all in the same collection). This handles storing and reading permissions only, any actual checking of permissions needs to be done in your application using the methods provided (see usage in README)