Mapped projection with <> to a case class with companion object in Slick

Question

With Slick, I am trying to project database table entries directly to the case class they represent. Following the example in the documentation, I set up a mapped projection usi

Answer 1

Personally, the partially applied apply method from the case class does not work with my setup and Slick 3.0.

This however, works, burrowing to the proper tupled method indirectly:

class WidgetTable(tag: Tag) extends Table[WidgetEntity](tag, "widget_tbl") {

    def id = column[Int]("id",O.PrimaryKey)
    def foo = column[String]("foo")

    override def * = (id,foo) <> ((WidgetEntity.apply _).tupled,WidgetEntity.unapply)
}

See the full details: https://stackoverflow.com/a/38589579/564157