public async Task <IActionResult> AddItem(
[Bind("ProductId", "Quantity", "ReturnUrl")] BasketAdderViewModel vm)
{
// Server-side validation for view components might be tricky. For now,
// redirect the user to the Shop Index. jQuery client-side validation will
// improve this experience once implemented
if (!ModelState.IsValid)
{
return(RedirectToAction("Index", "Shop"));
}
ApplicationUser user = await _userManager.GetUserAsync(HttpContext.User);
Basket basket = user.CurrentBasketId.HasValue ?
await _productDbContext.Baskets.FindAsync(user.CurrentBasketId) : null;
// If the user doesn't have an open basket yet, then create one
if (basket is null || basket.Closed)
{
basket = (await _productDbContext.Baskets.AddAsync(new Basket()
{
Closed = false,
CreationTime = DateTime.UtcNow,
UserId = user.Id
})).Entity;
await _productDbContext.SaveChangesAsync();
// Set the user's current basket id to the new basket manually
// since the user exists on a different context than the basket
user.CurrentBasketId = basket.Id;
await _userManager.UpdateAsync(user);
}
BasketItem item = await _productDbContext.BasketItems.FirstOrDefaultAsync(bi => bi.BasketId == basket.Id &&
bi.ProductId == vm.ProductId);
// If the basket item doesn't exist then create it. Otherwise, just add the specified
// quantity to the existing item
if (item is null)
{
await _productDbContext.BasketItems.AddAsync(new BasketItem()
{
BasketId = basket.Id,
ProductId = vm.ProductId,
Quantity = vm.Quantity,
UserId = user.Id
});
}
else
{
item.Quantity += vm.Quantity;
_productDbContext.BasketItems.Update(item);
}
// Save changes and return the user to whence they came
await _productDbContext.SaveChangesAsync();
return(RedirectToLocal(vm.ReturnUrl));
}
public async Task <IActionResult> AddItem(BasketAdderViewModel vm)
{
//If something slips in the model toss the user back to the store page
if (!ModelState.IsValid)
{
return(RedirectToAction("Index", "Products"));
}
//pull the user from the current logged in HttpContext
ApplicationUser user = await _userManager.GetUserAsync(HttpContext.User);
//Set our Basket to the current one if it exists
Basket basket = user.CurrentBasketId.HasValue ?
await _productDbContext.Baskets.FindAsync(user.CurrentBasketId) : null;
// If the user has no basket open, then create one
if (basket == null)
{
basket = (await _productDbContext.Baskets.AddAsync(new Basket()
{
UserId = user.Id,
CheckedOut = false
})).Entity;
await _productDbContext.SaveChangesAsync();
//Set the basket ID for the user
user.CurrentBasketId = basket.Id;
await _userManager.UpdateAsync(user);
}
BasketItem item = await _productDbContext.BasketItems.FirstOrDefaultAsync(bi => bi.BasketId == basket.Id);
// Add the item to the basket or if it already exists add to the quantity
if (item is null)
{
await _productDbContext.BasketItems.AddAsync(new BasketItem()
{
BasketId = basket.Id,
ProductId = vm.ProductId,
Quantity = vm.Quantity,
});
}
else
{
item.Quantity += vm.Quantity;
_productDbContext.BasketItems.Update(item);
}
return(RedirectToAction("Index", "Products"));
}
