public async Task <FilmModel> AddOrUpdateFilm(FilmModel film)
{
int id = await _filmRepository.AddOrUpdateFilm(Mapper.Map <DalFilmModel>(film));
return(new FilmModel(
(id != 0) ? id : film.Id,
film.Name,
film.Description,
film.StartRentDate,
film.EndRentDate
));
}