Using Auto Incrementing fields with PostgreSQL and Slick

Question

How does one insert records into PostgreSQL using AutoInc keys with Slick mapped tables? If I use and Option for the id in my case class and set it to None, then PostgreSQL

Answer 1

Another trick is making the id of the case class a var

case class Entity(var id: Long)

To insert an instance, create it like below Entity(null.asInstanceOf[Long])

I've tested that it works.