public String addHistory() {
history.setDriver(dm.getDriver(driverId));
history.setBus(bm.getBus(busId));
history.setRoute(rm.getRoute(routeId));
history.setDate(date);
hm.addHistory(history);
history = new History();
driverId = 0L;
busId = 0L;
routeId = 0L;
historiesForDate = hm.getHistoryByDate(date);
return "showLines?faces-redirect=true";
}
