Issue with Discount on Current Cart - Customer spending over x.xx amount

Installed a plugin to use a discount code for cart if a customer is spending over a certain amount of money. Found this plugin that should fit my needs, but getting an error when trying use the set coupon code. Here is a link to the plugin I've downloaded and installed. http://www.nopcommerceplus.com/discount-on-current-shopping-cart-subtotal

I'm running Nop 4.20

Log level: Error
Short message:  
Could not load type 'Nop.Services.Orders.ShoppingCartExtensions' from assembly 'Nop.Services, Version=4.2.0.0, Culture=neutral, PublicKeyToken=null'.
Full message:  
System.TypeLoadException: Could not load type 'Nop.Services.Orders.ShoppingCartExtensions' from assembly 'Nop.Services, Version=4.2.0.0, Culture=neutral, PublicKeyToken=null'.
   at Nop.Plugin.DiscountRules.SpendAmountOver.SpendAmountOverDiscountRequirementRule.CheckRequirement(DiscountRequirementValidationRequest request)
   at Nop.Services.Discounts.DiscountService.GetValidationResult(IEnumerable`1 requirements, RequirementGroupInteractionType groupInteractionType, Customer customer, List`1 errors) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Discounts\DiscountService.cs:line 152
   at Nop.Services.Discounts.DiscountService.GetValidationResult(IEnumerable`1 requirements, RequirementGroupInteractionType groupInteractionType, Customer customer, List`1 errors) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Discounts\DiscountService.cs:line 141
   at Nop.Services.Discounts.DiscountService.ValidateDiscount(DiscountForCaching discount, Customer customer, String[] couponCodesToValidate)
   at Nop.Web.Controllers.ShoppingCartController.<>c__DisplayClass51_1.<ApplyDiscountCoupon>b__1(DiscountForCaching discount) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Controllers\ShoppingCartController.cs:line 1439
   at System.Linq.Enumerable.Any[TSource](IEnumerable`1 source, Func`2 predicate)
   at Nop.Web.Controllers.ShoppingCartController.ApplyDiscountCoupon(String discountcouponcode, IFormCollection form) in C:\andrei\nopcommerce\sources\src\Presentation\Nop.Web\Controllers\ShoppingCartController.cs:line 1445
   at lambda_method(Closure , Object , Object[] )
   at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.SyncActionResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync()
   at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync()
   at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext)
   at WebMarkupMin.AspNetCore2.WebMarkupMinMiddleware.Invoke(HttpContext context)
   at StackExchange.Profiling.MiniProfilerMiddleware.Invoke(HttpContext context) in C:\projects\dotnet\src\MiniProfiler.AspNetCore\MiniProfilerMiddleware.cs:line 94
   at Nop.Services.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Authentication\AuthenticationMiddleware.cs:line 79
   at Microsoft.AspNetCore.Localization.RequestLocalizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Session.SessionMiddleware.Invoke(HttpContext context)
   at Nop.Services.Installation.InstallUrlMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Installation\InstallUrlMiddleware.cs:line 52
   at Nop.Services.Common.KeepAliveMiddleware.Invoke(HttpContext context, IWebHelper webHelper) in C:\andrei\nopcommerce\sources\src\Libraries\Nop.Services\Common\KeepAliveMiddleware.cs:line 49
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.StatusCodePagesMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware.Invoke(HttpContext context)

You are best to contact the plugin supplier directly
http://www.nopcommerceplus.com/

No luck with contacting the developer. Are there any other options that others use?

If your requirement is to display discount box after a minimum amount is in the cart, then you can achieve this by a small customization. Go to ShoppingCartModelFactory.PrepareShoppingCartModel(). Get cart total using this code before line no 842.

_orderTotalCalculationService.GetShoppingCartSubTotal(cart, true, out decimal _, out List<DiscountForCaching> _, out decimal subTotalWithoutDiscount, out decimal subTotalWithDiscount)

Then modify line 842 like below.

model.DiscountBox.Display = _shoppingCartSettings.ShowDiscountBox && subTotalWithDiscount >= {yourExpectedMinimumCartAmount};

Try another?

https://www.nopcommerce.com/discount-rule-minimum-xxx-cart-subtotal-amount-nopadvance-team

I had the same problem yesterday and i solve it by adding a class named ShoppingCartExtensions into the namespace Nop.Services.Orders as the code below:

namespace Nop.Services.Orders
{
    /// <summary>
    /// Represents a shopping cart
    /// </summary>
    public static class ShoppingCartExtensions
    {
        /// <summary>
        /// Limit cart by store (if carts are not shared between stores)
        /// </summary>
        /// <param name="cart">Cart</param>
        /// <param name="storeId">Store identifier</param>
        /// <returns>Cart</returns>
        public static IEnumerable<ShoppingCartItem> LimitPerStore(this IEnumerable<ShoppingCartItem> cart, int storeId)
        {
            var shoppingCartSettings = EngineContext.Current.Resolve<ShoppingCartSettings>();
            if (shoppingCartSettings.CartsSharedBetweenStores)
                return cart;

            return cart.Where(x => x.StoreId == storeId);
        }
    }
}

The problem is that this code was removed in the version 4.2 and this plugin still use it.

marouen - Glad you found a solution to the issue. I struggled with it for some time, but thanks to New York I found a different plugin to use. It was free and did just as I needed without issue.

https://www.nopcommerce.com/discount-rule-minimum-xxx-cart-subtotal-amount-nopadvance-team

groundzero2010 wrote:

Hello,

Sorry for the inconvenience. Again sorry that i didn't checked forum yesterday that you are facing issue with our plugin. Even i didn't received any mail from your side otherwise i could help you with it.

Let me know if are you still looking for solution.

Thanks,
Jatin