How to recurse data from a database in Rails?

Question

Ruby on Rails

Take, for example, the assistant manager. That is, each chief has his assistants, and in turn these assistants have their assistants, and so on.
For example, they have such a relationship Boss.id = Аssistant.boss_id (has_many, belongs_to - many to one).
So there is a boss with id = 5. And I need to take all the id-shniks of my assistants, including their assistants, and so on until the end.
And how to implement it if I don't know the levels???

Answer 1

https://github.com/collectiveidea/awesome_nested_set for helpers model