title: how can i set local key and foreign key in laravel eloquent-has-many-deep package
body: <p>I am using the eloquent-has-many-deep package and I want to use the following link:
  <a href="https://github.com/staudenmeir/eloquent-has-many-deep#manytomany--manytomany" rel="nofollow noreferrer">https://github.com/staudenmeir/eloquent-has-many-deep#manytomany--manytomany</a></p>
  <p>but i can't understand how to set local key and foreign key on this example.
  please help me</p>