Slick PostgreSQL List

MyPostgresProfile.scala

trait MyPostgresProfile
    extends ExPostgresProfile
    with PgArraySupport
    with PgDate2Support
    with PgRangeSupport
    with PgHStoreSupport {
  def pgjson = "jsonb"

  // Add back `capabilities.insertOrUpdate` to enable native `upsert` support; for postgres 9.5+
  override protected def computeCapabilities: Set[Capability] =
    super.computeCapabilities + slick.jdbc.JdbcCapabilities.insertOrUpdate

  override val api = MyAPI

  object MyAPI extends API with ArrayImplicits with DateTimeImplicits with RangeImplicits with HStoreImplicits {
    val strSimpleJdbcArrayListType: SimpleArrayJdbcType[String] = new SimpleArrayJdbcType[String]("text")

    implicit val strListTypeMapper: JdbcType[List[String]] =
      strSimpleJdbcArrayListType.to(_.toList)

    // here we 
    implicit val useCaseListTypeMapper: JdbcType[List[UseCase]] = strSimpleJdbcArrayListType
      .mapTo[UseCase](str => UseCase.of(str), uc => uc.label)
      .to(_.toList)

  }