public bool UpdateBook(List <int> authorsId, List <int> categoriesId, Book book)
{
var authors = _bookDBContext.Authors.Where(a => authorsId.Contains(a.Id)).ToList();
var categories = _bookDBContext.Categories.Where(c => categoriesId.Contains(c.Id)).ToList();
var bookAuthorsToDelete = _bookDBContext.BookAuthors.Where(b => b.BookId == book.Id);
var bookCategoriesToDelete = _bookDBContext.BookCategories.Where(b => b.BookId == book.Id);
_bookDBContext.RemoveRange(bookAuthorsToDelete);
_bookDBContext.RemoveRange(bookCategoriesToDelete);
foreach (var author in authors)
{
var bookAuthor = new BookAuthor()
{
Author = author,
Book = book
};
_bookDBContext.Add(bookAuthor);
}
foreach (var category in categories)
{
var bookCategory = new BookCategory()
{
Category = category,
Book = book
};
_bookDBContext.Add(bookCategory);
}
_bookDBContext.Update(book);
return(Save());
}
public bool DeleteReviews(List <Review> reviews)
{
_reviewContext.RemoveRange(reviews);
return(Save());
}
