public JsonResult GetWeightForLastThirtyDays(string personId, string currentDateTime)
{
DateTime endDate = DateTime.Parse(currentDateTime);
DateTime startDate = endDate.AddDays(-30);
WeightHandler handler = new WeightHandler();
List <XYModel> weightAndDateModel = handler.GetWeightsAndDatesAsXAndY(Convert.ToInt32(personId), startDate, endDate);
return(Json(weightAndDateModel));
}