JsFunctions.scala

object JsFunctions {

  // Some more code here, using the buildServiceFunctions method

  

  def buildServerFunctions(name: String, funcs: List[RoundTripInfo], session: Box[LiftSession]): JsCmd = {
    JsRaw("""lift_serverFunctions().apply('%s', %s)"""
      .format(name, session.getOrElse(throw new Exception("Session required")).buildRoundtrip(funcs).toJsCmd).stripMargin).cmd
  }
}  

NgAccountService.scala

trait NgAccountService extends NgService {
 
  def ngAccountServerFunctions(xhtml: NodeSeq): NodeSeq = {
    val serverFunctionMappings = List[RoundTripInfo](
      "signup" -> this.ngAccountService_signup _)

      this.applyService("accountService", serverFunctionMappings)
  }
  
  /**
   * Sends activation mail (with activation link)
   *
   * @param emailValue
   * @return
   */
  protected def ngAccountService_signup(emailValue: String): JsonAST.JValue = {

    // Some BL here
    
    val hostAndPath = S.hostAndPath
    
    // Response value
  }
  
}

NgPublic.scala

class NgPublic extends StatefulSnippet
  with NgAccountService {

  override def dispatch: DispatchIt = {
    case "accountService" => ngAccountServerFunctions
  }
}

NgService.scala

trait NgService extends Logger {

  protected implicit lazy val formats = DefaultFormats

  /**
   * Helper method to simplify ngServices
   *
   * @param serverFunctionMappings
   */
  protected def applyService(serviceName: String, serverFunctionMappings: List[RoundTripInfo]): NodeSeq = {
    S.putAtEndOfBody(JsFunctions.serverFunctions(serviceName, serverFunctionMappings, S.session))

    NodeSeq.Empty
  }
}