gistfile1.scala

class Ads {

  val formatter = ISODateTimeFormat.dateTime()
  var date:DateTime = new DateTime

  lazy val mongoColl = MongoConnection()("abc")("ads")


  def list = {
    val q = MongoDBObject("published" -> MongoDBObject("$lt" -> date))
    val la = S.findCookie("latitude")
    val lo = S.findCookie("longitude")
    if(!la.isEmpty && !lo.isEmpty){
      val latitude = la.open_!.value
      val longitude = lo.open_!.value
      if(!latitude.isEmpty && !longitude.isEmpty) {
        val latitudeStr = latitude.open_!
        val longitudeStr = longitude.open_!
        q+=("location" -> MongoDBObject("$near" -> (latitudeStr.toFloat,longitudeStr.toFloat)))
      }
    }

    val coll = mongoColl.find(q).limit(10).sort(Map("published" -> -1)).toList
    if(coll.size>0) S.appendJs(JsRaw("datePtr = '%s'".format(coll.last.get("published").toString)))
  /** 
   ".ad" #> coll.map(ad =>      
    .
    .
  ) */
}

def more(datePtr:String) = {
  date = formatter.parseDateTime(datePtr)
  AppendHtml ("ads", <lift:embed what="ad"></lift:embed>)
}

def ajax = "#more" #> SHtml.ajaxButton (Text ("More"), JsVar("datePtr"), more _)
}

Is it proper to set date = formatter.parseDateTime(datePtr) in more method ?