public ActivityPlanningBusiness(string name, DateTime plannedDate, List <int> attendees, int homeId)
{
activityModel = new ActivityModel();
activityModel.Name = name;
activityModel.PlannedDate = plannedDate;
activityModel.Attendees = attendees;
activityModel.AttendeesString = activityModel.GetAttendeesListAsString();
activityModel.HomeId = homeId;
}
