public async Task <IActionResult> Details(string id)
{
ICollection <ProductViewModel> mostOrderedProductsCache;
if (!this.memoryCache.TryGetValue("MostOrderedProducts", out mostOrderedProductsCache))
{
mostOrderedProductsCache = this.productsService.GetMostOrderedProducts()
.Select(p => p.Map <Product, ProductViewModel>()).ToList();
MemoryCacheEntryOptions memoryCacheOptions = new MemoryCacheEntryOptions();
memoryCacheOptions.AbsoluteExpiration = DateTime.UtcNow.AddMinutes(5);
this.memoryCache.Set <ICollection <ProductViewModel> >("MostOrderedProducts", mostOrderedProductsCache, memoryCacheOptions);
}
var product = await this.productsService.GetProduct(id, this.User.Identity.Name);
if (product == null)
{
this.TempData["Error"] = "Product does not exists.";
return(RedirectToAction(nameof(Index)));
}
var details = product.Map <Product, ProductDetailsViewModel>();
var model = new ProductDetailsPageViewModel
{
Product = details,
MostOrderedProducts = mostOrderedProductsCache
};
this.TempData["CurrentProductId"] = id;
return(View(model));
}
public async Task <IActionResult> Details(ProductDetailsPageViewModel model, string id)
{
if (this.TempData["CurrentProductId"].ToString() != id)
{
this.TempData["Error"] = "Invalid operation.";
return(RedirectToAction(nameof(Index)));
}
if (!this.ModelState.IsValid)
{
ICollection <ProductViewModel> mostOrderedProductsCache;
if (!this.memoryCache.TryGetValue("MostOrderedProducts", out mostOrderedProductsCache))
{
mostOrderedProductsCache = this.productsService.GetMostOrderedProducts()
.Select(p => p.Map <Product, ProductViewModel>()).ToList();
MemoryCacheEntryOptions memoryCacheOptions = new MemoryCacheEntryOptions();
memoryCacheOptions.AbsoluteExpiration = DateTime.UtcNow.AddMinutes(5);
this.memoryCache.Set <ICollection <ProductViewModel> >("MostOrderedProducts", mostOrderedProductsCache, memoryCacheOptions);
}
var product = await this.productsService.GetProduct(id, this.User.Identity.Name);
if (product == null)
{
this.TempData["Error"] = "Product does not exists.";
return(RedirectToAction(nameof(Index)));
}
var details = product.Map <Product, ProductDetailsViewModel>();
model.Product = details;
model.MostOrderedProducts = mostOrderedProductsCache;
this.TempData["CurrentProductId"] = id;
return(View(model));
}
var review = model.Map <ProductDetailsPageViewModel, Review>();
review.ProductId = Guid.Parse(id);
await this.reviewService.Create(review, this.User.Identity.Name);
this.TempData["Success"] = "Review added.";
return(RedirectToAction(nameof(Details), new { id }));
}
public ProductDetailsPage()
{
InitializeComponent();
BindingContext = new ProductDetailsPageViewModel();
}