public Book UpdateBook(EditBookViewModel view)
{
var book = GetBookById(view.Id);
book.Author = view.Author;
book.NumberPages = view.NumberPages;
book.PublishingYear = view.PublishingYear;
var publication = _publications.Where(x => x.Id == book.Publication.Id).FirstOrDefault();
publication.Name = view.PublicationName;
_publicationRepository.Update(publication);
_publicationRepository.Save();
_bookRepository.Update(book);
_bookRepository.Save();
return(book);
}