public void DeleteAuthor(BookAuthor model)
{
var result = GetAuthorById(model.AuthorId);
var deletableBooks = _db.Books.Where(e => e.AuthorId == model.AuthorId);
_db.Books.RemoveRange(deletableBooks);
_db.BookAuthors.Remove(result);
_db.SaveChanges();
}
public void AddAuthor(BookAuthor model)
{
_db.BookAuthors.Add(model);
_db.SaveChanges();
}