public async Task <IActionResult> Edit(string id, [Bind("Id,GenreId,BookId")] BooksGenres booksGenres)
{
if (id != booksGenres.Id)
{
return(NotFound());
}
if (ModelState.IsValid)
{
try
{
_context.Update(booksGenres);
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!BooksGenresExists(booksGenres.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToAction(nameof(Index)));
}
ViewData["BookId"] = new SelectList(_context.Book, "Id", "Id", booksGenres.BookId);
ViewData["GenreId"] = new SelectList(_context.Genre, "Id", "Id", booksGenres.GenreId);
return(View(booksGenres));
}
/// <summary>
/// Adds a new book-genre relation.
/// </summary>
/// <param name="bookId"></param>
/// <param name="genreId"></param>
public void Add(int bookId, int genreId)
{
using (libraryContext = generator.Generate())
{
BooksGenres booksGenre = new BooksGenres();
booksGenre.BookId = bookId;
booksGenre.GenreId = genreId;
libraryContext.BooksGenres.Add(booksGenre);
libraryContext.SaveChanges();
}
}
public async Task <IActionResult> Create([Bind("Id,GenreId,BookId")] BooksGenres booksGenres)
{
if (ModelState.IsValid)
{
_context.Add(booksGenres);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
ViewData["BookId"] = new SelectList(_context.Book, "Id", "Id", booksGenres.BookId);
ViewData["GenreId"] = new SelectList(_context.Genre, "Id", "Id", booksGenres.GenreId);
return(View(booksGenres));
}