public IActionResult Index(CartItem item)
{
var cartIdCookie = GetEncryptedShopCookie("CART_ID");
if (cartIdCookie == null)
{
var cart = new Cart();
cart.CartItems = new List <CartItem>();
cart.CartItems.Add(item);
_context.Add(cart);
_context.SaveChanges();
SetEncryptedShopCookie("CART_ID", cart.Id.ToString());
PopulateShopData(cart.Id);
}
else
{
var cartId = Convert.ToInt32(cartIdCookie);
var cart = _context.Carts
.Include(c => c.CartItems)
.SingleOrDefault(c => c.Id == cartId);
if (cart == null)
{
return(NotFound());
}
var cartItem = cart.CartItems
.SingleOrDefault(ci => ci.ProductId == item.ProductId);
if (cartItem == null)
{
cart.CartItems.Add(item);
}
else
{
if (item.Quantity == 0)
{
_context.Remove(cartItem);
}
else
{
cartItem.Quantity = item.Quantity;
_context.Update(cartItem);
}
}
_context.SaveChanges();
PopulateShopData(cartId);
}
return(PartialView("_CartItemPartial"));
}
public async Task <IActionResult> Create([Bind("ID,Name,GPU,RAM,Processor,ScreenSizeInch,RouteToImage,ImageBytes")] Notebook notebook)
{
if (ModelState.IsValid)
{
_context.Add(notebook);
await _context.SaveChangesAsync();
return(RedirectToAction(nameof(Index)));
}
return(View(notebook));
}
public IActionResult Index(CartItem item)
{
var cartIdCookie = GetEncryptedShopCookie("CART_ID");
if (!ModelState.IsValid)
{
// there is a model error
if (cartIdCookie == null)
{
PopulateViewData(null);
}
else
{
PopulateViewData(Convert.ToInt32(cartIdCookie));
}
return(View());
}
if (cartIdCookie == null)
{
// need to create a new cart
var cart = new Cart();
cart.CartItems = new List <CartItem>();
cart.CartItems.Add(item);
var userId = GetEncryptedShopCookie("USER_ID");
if (userId != null)
{
cart.UserId = Convert.ToInt32(userId);
}
// add the cart to the context, then apply the changes to the database via the SaveChanges method
_context.Add(cart);
_context.SaveChanges();
// set the cartId in a cookie
SetEncryptedShopCookie("CART_ID", cart.Id.ToString());
// we are going to show the user the Index.cshtml view, so populate the ViewData values
PopulateViewData(cart.Id);
}
else
{
// already has a cart so fetch from database
var cartId = Convert.ToInt32(cartIdCookie);
// fetch the cart from the database
var cart = _context.Carts
.Include(c => c.CartItems)
.SingleOrDefault(c => c.Id == cartId);
if (cart == null)
{
return(NotFound());
}
// get the existing cart item, if any
var cartItem = cart.CartItems
.SingleOrDefault(ci => ci.ProductId == item.ProductId);
// add new item to cart or replace quantity on an existing item
if (cartItem == null)
{
// new item
cart.CartItems.Add(item);
}
else
{
// update existing item
if (item.Quantity == 0)
{
// delete
_context.Remove(cartItem);
}
else
{
// update
cartItem.Quantity = item.Quantity;
_context.Update(cartItem);
}
}
_context.SaveChanges();
PopulateViewData(cartId);
}
return(View());
}