private async Task <Book> GetByIdAsync(int id)
{
var book = await _repository.GetByIdAsync(id);
if (book == null)
{
var message = string.Format(ErrorMessage.NOT_FOUND_FORMAT, id);
ThrowHttp.NotFound(message);
}
return(book);
}
private async Task <Author> GetByIdAsync(int id)
{
var author = await _repository.GetByIdAsync(id);
if (author == null)
{
var errorMessage = string.Format(ErrorMessage.NOT_FOUND_FORMAT, id);
ThrowHttp.NotFound(errorMessage);
}
return(author);
}