public void Update(BookGetViewModel bookView)
{
List <AuthorInBook> bookInAuthor = _authorInBookRepository.GetBook(bookView.Book.Id).ToList();
if (bookInAuthor != null)
{
List <AuthorInBook> updateBook = CreateAuthorInBook(bookView, bookInAuthor.First().Id);
_authorInBookRepository.Update(updateBook);
}
}
public BookGetViewModel GetBook(int id)
{
List <AuthorInBook> books = _authorInBookRepository.GetBook(id).ToList();
var bookView = new BookGetViewModel();
if (books != null)
{
bookView = books.GroupBy(x => x.Book.Id).Select(x => new BookGetViewModel()
{
Book = x.First().Book,
Authors = x.Select(z => z.Author).ToList()
}).First();
}
return(bookView);
}
private List <AuthorInBook> CreateAuthorInBook(BookGetViewModel bookView, int IdAuthorInBook)
{
var updateBook = new List <AuthorInBook>();
if (bookView.Authors.Count != 0)
{
foreach (Author author in bookView.Authors)
{
updateBook.Add(new AuthorInBook {
Author = author, Book = bookView.Book, Id = IdAuthorInBook
});
}
}
if (bookView.Authors.Count == 0)
{
updateBook.Add(new AuthorInBook {
Book = bookView.Book
});
}
return(updateBook);
}