Creating a nested set. What is the initial left and right key?

Question

nested set

This package was recommended - https://github.com/lazychaser/laravel-nestedset
I installed it, but when creating a category, I get an error that the fields:
_lft , _rgt and parent_id are not specified. But it's not clear to me what values ​​to assign?
Has anyone come across?
That is, when I just create an entry, it must be root. Just enter zeros?
And when I create a children, what should I specify then?

Answer 1

Documentation (c) captain

Answer 2

Я так понимаю _lft, _rgt и parent_id устанавливает за Вас установленное расширение. И проблема в том, что у Вас они валидируются, а не должны. Это должны быть safe атрибуты.