Cannot update line items quantity in cart

Thang Phan

Vote:

LineItem quantity will not save, what do i do?

private List IncreaseOrDecreaseQuantity(string productCode, bool decrease)
{
var contactId = PrincipalInfo.CurrentPrincipal.GetContactId();
var cart = _orderRepository.LoadOrCreateCart(contactId, "Default");

var currentCartItems = GetCartItems();
var lineItem = currentCartItems.FirstOrDefault(x => x.Code.Equals(productCode));

var value = decrease ? -1 : 1;

if (lineItem != null)
cart.UpdateLineItemQuantity(cart.GetFirstShipment(), lineItem, lineItem.Quantity + value);

_orderRepository.Save(cart);

var a = cart.GetAllLineItems();
return currentCartItems;
}

_orderRepository = IOrderRepository

#187684

Jan 31, 2018 16:13

Quan Mai

Vote:

You can simply set the Quantity property of the LineItem instance to the desired value. I have to check the code to be sure but I think UpdateLineItemQuantity actually check and set the Quantity based on availability

#187696

Feb 01, 2018 2:48

Thang Phan

Vote:

I think UpdateLineItemQuantity updates the quantity, but _orderRepository does not save it.

#187716

Feb 01, 2018 9:35

Thang Phan

Vote:

Nevermind, if someone suddenly gets this issue, my solution was to not convert ILineItem to LineItem. UpdateLineItemQuantity works with ILineItem, not LineItem..

#187718

Feb 01, 2018 10:35

Quan Mai

Vote:

Actually that's not true. UpdateLineItemQuantity works with both. I checked the code now and it checks if the shipment is Shipment or not and does change the quanitty accordingly. I don't now what you have in GetCartItems, but it supposedly returns a list of LineItem. You can use cart.GetAllLineItems to return a list of ILineItem, and update the quantity directly, without having to call UpdateLineItemQuantity. A rule of thumb is to use the abstraction APIs all the way, not to mix it with the concrete classes.

#187788

Feb 02, 2018 12:38