How to implement selecting multiple values ​​in a one-to-many two-way relationship?

Question

symfony

There are three entities Book, Author, and Category, a two-way relationship is established. How can you implement selecting multiple values ​​from the Author and Category entities in the Book entity?
(maybe there are already ready-made solutions, or an example of implementation, I will be very grateful for the help)

Answer 1

It?
doctrine-orm.readthedocs.org/projects/doctrine-orm...