public IActionResult DeleteAuthorBook(int id)
{
AuthorBook editAuthorBook = authorBookRepository.GetAuthorBook(id);
if (editAuthorBook == null)
{
ViewBag.Object = "AuthorBook";
return(View("Views/Home/ObjectNotFound.cshtml", id));
}
authorBookRepository.Delete(id);
return(RedirectToAction("DisplayAllAuthorBooks"));
}
public async Task Update(BookEditDto book)
{
var bookDb = await _bookRepo
.GetAll()
.FirstOrDefaultAsync(b => b.Id == book.Id);
_mapper.Map(book, bookDb);
_bookRepo.Update(bookDb);
await _bookRepo.SaveChangesAsync();
var oldBookAuthors = await _authorBookRepo
.GetAll()
.Where(ab => ab.BookId == book.Id)
.ToListAsync();
foreach (var ab in oldBookAuthors)
{
_authorBookRepo.Delete(ab);
}
await _authorBookRepo.SaveChangesAsync();
var newBookAuthors = book
.AuthorsIds
.Select(aId => new AuthorBook {
AuthorId = aId, BookId = bookDb.Id
});
foreach (var ab in newBookAuthors)
{
await _authorBookRepo.CreateAsync(ab);
}
await _authorBookRepo.SaveChangesAsync();
}