Slick 2: Delete row in slick with play framework - scala

Question

This requirement should be really easy, but I don't know why is not working. I want to delete a row based on it's id using slick with play framework.
I'm following this example from play-slick module, but compiler complains that value delete is not a member of scala.slick.lifted.Query[models.Tables.MyEntity,models.Tables.MyEntity#TableElementType].
My controller looks like:
def delete(id: Int) = DBAction{ implicit rs =>
val q = MyEntity.where(_.id === id)
q.delete
Ok("Entity deleted")
}
I've imported the play.api.db.slick.Config.driver.simple._
What am I doing wrong?
Edit:
My schema definition looks like:
class Cities(tag: Tag) extends Table[CityRow](tag, "cities") {
def * = (cod, name, state, lat, long, id) <> (CityRow.tupled, CityRow.unapply)
/** Maps whole row to an option. Useful for outer joins. */
def ? = (cod.?, name.?, state.?, lat, long, id.?).shaped.<>({r=>import r._; _1.map(_=> CityRow.tupled((_1.get, _2.get, _3.get, _4, _5, _6.get)))}, (_:Any) => throw new Exception("Inserting into ? projection not supported."))
val cod: Column[String] = column[String]("cod")
val name: Column[String] = column[String]("name")
val state: Column[Int] = column[Int]("state")
val lat: Column[Option[String]] = column[Option[String]]("lat")
val long: Column[Option[String]] = column[Option[String]]("long")
val id: Column[Int] = column[Int]("id", O.AutoInc, O.PrimaryKey)
/** Foreign key referencing Departamentos (database name fk_ciudades_departamentos1) */
lazy val stateFk = foreignKey("fk_cities_states", state, States)(r => r.idstate, onUpdate=ForeignKeyAction.NoAction, onDelete=ForeignKeyAction.NoAction)
}

Answer 1

I also had a look at that example some time ago and it looked wrong to me too, not sure wether I was doing something wrong myself or not, the delete function was always a bit tricky to get right, expecially using the lifted.Query (like you are doing). Later in the process I made it work importing the right drivers, in my case scala.slick.driver.PostgresDriver.simple._.
Edit after comment:
Probably you have an error in the shape function, hard to say without looking at your schema declaration. This is an example:
case class CityRow(id: Long, name: String) {
class City(tag: Tag) extends Table[CityRow](tag, "city") {
def * = (id, name) <>(CityRow.tupled, CityRow.unapply)
^this is the shape function.
def ? = (id.?, name).shaped.<>({
r => import r._
_1.map(_ => CityRow.tupled((_1.get, _2)))
}, (_: Any) => throw new Exception("Inserting into ? projection not supported."))
val id: Column[Long] = column[Long]("id", O.AutoInc, O.PrimaryKey)
val name: Column[String] = column[String]("name")
}