Customer Type Mapper for Slick SQL

Question

I've found this example from slick testing:
https://github.com/slick/slick/blob/master/slick-testkit/src/main/scala/com/typesafe/slick/testkit/tests/MapperTest.scala

sealed trait Bool
case object True extends Bool
case object False extends Bool

implicit val boolTypeMapper = MappedColumnType.base[Bool, String](
  { b =>
    assertNotNull(b)
    if(b == True) "y" else "n"
  }, { i =>
    assertNotNull(i)
    if(i == "y") True else False
  }
)

But I'm trying to create a TypeMapper for org.joda.time.DateTime to/from java.sql.Timestamp - but without much success. The Bool example is very particular and I'm having trouble adapting it. Joda Time is super common - so any help would be much appreciated.

To be clear, I'm using interpolated sql"""select colA,colB from tableA where id = ${id}""" and such. When doing a select the system works well by using jodaDate types in the implicit GetResult converter.

However, for inserts there doesn't seem to be a way to do an implicit conversion or it is ignoring the code provided below in Answer #1 - same error as before: could not find implicit value for parameter pconv: scala.slick.jdbc.SetParameter[(Option[Int], String, String, Option[org.joda.time.DateTime])]

I'm not using the Lifted style Slick configuration with the annotated Table objects perhaps that is why it is not finding/using the TypeMapper