public async Task <IActionResult> Edit(BookUpdatingModel updatingBook)
{
if (ModelState.IsValid)
{
var result = await _bookService.UpdateBook(updatingBook);
return(RedirectToAction("Index"));
}
else
{
return(View(await _bookService.GetBook(updatingBook.Id)));
}
}
//updating book
public async Task <int> UpdateBook(BookUpdatingModel updatedModel)
{
var book = await _db.Books.Include(x => x.BooksAuthors)
.SingleOrDefaultAsync(u => u.Id == updatedModel.Id);
book.Description = updatedModel.Description;
book.Title = updatedModel.Title;
book.Edition = updatedModel.Edition;
book.PublishedAt = updatedModel.PublishedAt;
book.BooksAuthors =
updatedModel.Authors?.Select(x => new BooksAuthor()
{
AuthorId = x, BookId = updatedModel.Id
}).ToList();
_db.Books.Update(book);
return(await _db.SaveChangesAsync());
}
