public EssaySummaryController(IEssayRepository essayRepository, IMapper mapper)
 {
     _essayRepository = essayRepository ?? throw new Exception(nameof(essayRepository));
     _mapper          = mapper ?? throw new Exception(nameof(mapper));
 }
 public CheckEssayExistFilterAttribute(IEssayRepository essayRepository)
 {
     _essayRepository = essayRepository;
 }