gistfile1.scala

  def mkArrayRep(list: List[String]): String =
    list.map(_.replace("\"", "\\\"").replace("\\", "\\\\"))
      .mkString("{\"", "\", \"", "\"}")
 
  def mkList(string: String): List[String] = {
    val commaSeparated = string.substring(1, string.length - 1)
    StringUtil.parseCsvLine(commaSeparated).toList
  }
 
  implicit def stringArrayMapper = MappedTypeMapper.base[List[String], String](mkArrayRep _, mkList _)
 
  def someCol = column[List[String]]("some_col", O.DBType("text[]"))