public BookService( dbBooksContext _bookContext, //BookMapper _mapper, //DbContextOptions<dbBooksContext> _dbContextOptionns, ILogger <BookService> _logger) { bookContext = _bookContext ?? throw new ArgumentNullException(nameof(bookContext)); //mapper = _mapper; //dbContextOptions = _dbContextOptionns ?? throw new ArgumentNullException(nameof(dbContextOptions)); logger = _logger ?? throw new ArgumentNullException(nameof(logger)); }
private bool BookExists(dbBooksContext bookContext, long id) => bookContext.Books.Any(e => e.Id == id);