public BookRatingViewModel IncrementBookRating(int rate, int id)
{
var book = db.Books
.Where(b => b.Id == id)
.First();
book.SumRatings += rate;
book.NumberOfRatings++;
db.SaveChanges();
var bookRating = new BookRatingViewModel()
{
BookId = book.Id,
SumRatings = book.SumRatings,
NumberOfRatings = book.NumberOfRatings,
AverageRating = Math.Round((double)book.SumRatings / (double)book.NumberOfRatings, 2)
};
return(bookRating);
}
public ActionResult Details(int id)
{
var book = _context.Books.Include(b => b.GenreType).SingleOrDefault(b => b.Id == id);
var viewModel = new BookRatingViewModel
{
Book = book,
Ratings = _context.Ratings.ToList()
};
if (viewModel == null)
{
return(HttpNotFound());
}
if (User.IsInRole("CanManageBooks"))
{
return(View(viewModel));
}
return(View("ReadOnlyDetails", viewModel));
}
// GET: Books/Details/5
public ActionResult Details(int?id)
{
if (id == null)
{
return(new HttpStatusCodeResult(HttpStatusCode.BadRequest));
}
var viewModel = new BookRatingViewModel {
AverageRating = 0
};
viewModel.Book = db.Books.Find(id);
viewModel.Book.NumberOfViews++;
db.SaveChanges();
if (viewModel.Book.NumberOfRatings > 0)
{
viewModel.AverageRating = Math.Round((double)viewModel.Book.SumRatings / (double)viewModel.Book.NumberOfRatings, 2);
}
if (viewModel.Book == null)
{
return(HttpNotFound());
}
return(View(viewModel));
}
