Model base and it's corresponding database access singleton for Play Framework 2.4+ using Errors

Model.scala

import javax.inject.Singleton
import com.mehmetakiftutuncu.errors.{Errors, Maybe}

trait Model {
  val id: String
}

trait ModelSingleton[M <: Model] {
  def get(id: String): Maybe[Option[M]]

  def getAll: Maybe[List[M]]

  def create(m: M): Errors

  def insertOrUpdate(m: M): Errors

  def update(m: M): Errors

  def delete(id: String): Errors

  def delete(m: M): Errors = delete(m.id)
}

case class PersonModel(id: String, name: String, age: Int) extends Model

@Singleton class Person extends ModelSingleton[PersonModel] {
  override def get(id: String): Maybe[Option[Person]] = ???

  override def getAll: Maybe[List[Person]] = ???

  override def create(person: Person): Errors = ???

  override def insertOrUpdate(person: Person): Errors = ???

  override def update(person: Person): Errors = ???

  override def delete(id: String): Errors = ???
}