Error executing template "Designs/Swift/Paragraph/Swift_ProductAddToCart_Custom.cshtml"
System.NullReferenceException: Object reference not set to an instance of an object.
   at CompiledRazorTemplates.Dynamic.RazorEngine_66e022e710e94504a696d5ea98b2f579.ExecuteAsync()
   at RazorEngine.Templating.TemplateBase.Run(ExecuteContext context, TextWriter reader)
   at RazorEngine.Templating.RazorEngineCore.RunTemplate(ICompiledTemplate template, TextWriter writer, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.DynamicWrapperService.Run(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService service, String name, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass23_0.<Run>b__0(TextWriter writer)
   at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
   at RazorEngine.Templating.RazorEngineServiceExtensions.Run(IRazorEngineService service, String name, Type modelType, Object model, DynamicViewBag viewBag)
   at Dynamicweb.Rendering.RazorTemplateRenderingProvider.Render(Template template)
   at Dynamicweb.Rendering.TemplateRenderingService.Render(Template template)
   at Dynamicweb.Rendering.Template.RenderRazorTemplate()


  1     @inherits Dynamicweb.Rendering.ViewModelTemplate<Dynamicweb.Frontend.ParagraphViewModel>
  2     @using Dynamicweb.Ecommerce.ProductCatalog
  3     @using Dynamicweb.Core.Encoders
  4     @using Dunlop.CustomCode
  5     
  6     
  7     @{
  8     	ProductViewModel product = null;
  9     	if (Dynamicweb.Context.Current.Items.Contains("ProductDetails"))
 10     	{
 11     		product = (ProductViewModel)Dynamicweb.Context.Current.Items["ProductDetails"];
 12     	}
 13     	else if (Pageview.Page.Item["DummyProduct"] != null && Pageview.IsVisualEditorMode)
 14     	{
 15     		var pageViewModel = Dynamicweb.Frontend.ContentViewModelFactory.CreatePageInfoViewModel(Pageview.Page);
 16     		ProductListViewModel productList = pageViewModel.Item.GetValue("DummyProduct") != null ? pageViewModel.Item.GetValue("DummyProduct") as ProductListViewModel : new ProductListViewModel();
 17     
 18     		if (productList?.Products is object)
 19     		{
 20     			product = productList.Products[0];
 21     		}
 22     	}
 23     
 24     	string anonymousUsersLimitations = Pageview.AreaSettings.GetRawValueString("AnonymousUsers", "");
 25     	bool anonymousUser = Pageview.User == null;
 26     	bool isErpConnectionDown = !Dynamicweb.Core.Converter.ToBoolean(Dynamicweb.Context.Current.Items["IsWebServiceConnectionAvailable"]);
 27     	bool hideAddToCart = anonymousUsersLimitations.Contains("cart") && anonymousUser || Pageview.AreaSettings.GetBoolean("ErpDownHideAddToCart") && isErpConnectionDown;
 28     	hideAddToCart = Pageview.IsVisualEditorMode ? false : hideAddToCart;
 29     	if (!hideAddToCart && Pageview.IsB2cSite())
 30     	{
 31     		bool showCartBtnAndPrice = Pageview.IsVisualEditorMode;
 32     
 33     		if (!showCartBtnAndPrice)
 34     		{
 35     			if (product != null && product.ProductFields.TryGetValue("ProductBuyableB2C", out FieldValueViewModel? productBuyableB2CField))
 36     			{
 37     				showCartBtnAndPrice = (bool)(productBuyableB2CField?.Value ?? false);
 38     			}
 39     		}
 40     		hideAddToCart = !showCartBtnAndPrice;
 41     	}
 42     
 43     	var currentStockLocation = product.StockUnits.FirstOrDefault(o => o.StockLocationId.ToString() == Dynamicweb.Ecommerce.Common.Context.StockLocation.ID.ToString() && o.UnitName == product.DefaultUnitId);
 44     	var currentStockFromStockLocation = currentStockLocation.StockLevel;
 45     
 46     }
 47     
 48     @if (product is object && !hideAddToCart)
 49     {
 50     	string horizontalAlign = Model.Item.GetRawValueString("HorizontalAlignment", "");
 51     	horizontalAlign = horizontalAlign == "center" ? "justify-content-center" : horizontalAlign;
 52     	horizontalAlign = horizontalAlign == "end" ? "justify-content-end" : horizontalAlign;
 53     	horizontalAlign = horizontalAlign == "full" ? "" : horizontalAlign;
 54     
 55     	bool favoritesSelector = !string.IsNullOrEmpty(Model.Item.GetString("ShowAddToFavorites")) ? Model.Item.GetBoolean("ShowAddToFavorites") : false;
 56     	bool quantitySelector = !string.IsNullOrEmpty(Model.Item.GetString("ShowQuantitySelector")) ? Model.Item.GetBoolean("ShowQuantitySelector") : false;
 57     	bool unitsSelector = !string.IsNullOrEmpty(Model.Item.GetString("ShowUnitsSelector")) ? Model.Item.GetBoolean("ShowUnitsSelector") : false;
 58     	bool hideInventory = !string.IsNullOrEmpty(Model.Item.GetString("HideInventory")) ? Model.Item.GetBoolean("HideInventory") : false;
 59     	bool hideStockState = !string.IsNullOrEmpty(Model.Item.GetString("HideStockState")) ? Model.Item.GetBoolean("HideStockState") : false;
 60     
 61     	string buttonSize = Model.Item.GetRawValueString("ButtonSize", "regular");
 62     	string inputSize = string.Empty;
 63     
 64     	switch (buttonSize)
 65     	{
 66     		case "small":
 67     			inputSize = " input-group-sm";
 68     			buttonSize = " btn-sm";
 69     			break;
 70     		case "regular":
 71     			buttonSize = string.Empty;
 72     			break;
 73     		case "large":
 74     			inputSize = " input-group-lg";
 75     			buttonSize = " btn-lg";
 76     			break;
 77     	}
 78     
 79     	string iconPath = "/Files/icons/";
 80     	string url = "/Default.aspx?ID=" + (GetPageIdByNavigationTag("CartService"));
 81     	if (!url.Contains("LayoutTemplate"))
 82     	{
 83     		url += url.Contains("?") ? "&LayoutTemplate=Swift_MiniCart.cshtml" : "?LayoutTemplate=Swift_MiniCart.cshtml";
 84     	}
 85     
 86     	string whenVariantsExist = Model.Item.GetRawValueString("WhenVariantsExist", "hide");
 87     	string flexFill = Model.Item.GetRawValueString("HorizontalAlignment", "") == "full" ? "flex-fill" : "";
 88     	string fullWidth = Model.Item.GetRawValueString("HorizontalAlignment", "") == "full" ? "w-100" : "";
 89     	string addToCartIcon = Model.Item.GetRawValueString("Icon", iconPath + "shopping-cart.svg");
 90     	string addToCartLabel = !addToCartIcon.Contains("_none") ? $"<span class=\"icon-2\">{ReadFile(addToCartIcon)}</span>" : "";
 91     	addToCartLabel += !addToCartIcon.Contains("_none") && !Model.Item.GetBoolean("HideButtonText") ? " " : "";
 92     	addToCartLabel += !Model.Item.GetBoolean("HideButtonText") ? $"<span class=\"d-none d-md-inline\">{Translate("Add to cart")}</span><span class=\"d-inline d-md-none\">{Translate("Add")}</span>" : "";
 93     	bool isLazyLoadingForProductInfoEnabled = Dynamicweb.Core.Converter.ToBoolean(Dynamicweb.Context.Current.Items["IsLazyLoadingForProductInfoEnabled"]);
 94     
 95     	bool userHasPendingQuote = Dynamicweb.Ecommerce.Common.Context.Cart != null && Dynamicweb.Ecommerce.Common.Context.Cart.IsQuote;
 96     
 97     	if (product.VariantInfo.VariantInfo == null || whenVariantsExist == "disable")
 98     	{
 99     		string unitId = !string.IsNullOrEmpty(Dynamicweb.Context.Current.Request.Form.Get("UnitId")) ? Dynamicweb.Context.Current.Request.Form.Get("UnitId") : product.DefaultUnitId;
100     		if (string.IsNullOrEmpty(unitId) && product?.UnitOptions != null)
101     		{
102     			if (product.UnitOptions.FirstOrDefault<UnitOptionViewModel>() != null)
103     			{
104     				unitId = product.UnitOptions.FirstOrDefault<UnitOptionViewModel>().Id;
105     			}
106     		}
107     
108     		double? stepQty = product.PurchaseQuantityStep > 0 ? product.PurchaseQuantityStep : 1;
109     		double? minQty = product.PurchaseMinimumQuantity > 0 ? product.PurchaseMinimumQuantity : 1;
110     		double? valueQty = minQty > stepQty ? minQty : stepQty;
111     		string disableAddToCart = null;
112     		double? maxQty = null;
113     
114     		if (product.ProductType == Dynamicweb.Ecommerce.Products.ProductType.Stock && !product.NeverOutOfstock && Pageview.IsB2cSite())
115     		{
116     			disableAddToCart = (currentStockFromStockLocation <= 0) || (!product.NeverOutOfstock && isLazyLoadingForProductInfoEnabled) ? "disabled" : disableAddToCart;
117     			maxQty = currentStockFromStockLocation;
118     		}
119     		else if (product.ProductType == Dynamicweb.Ecommerce.Products.ProductType.Stock && !product.NeverOutOfstock)
120     		{
121     			disableAddToCart = (product.StockLevel <= 0) || (!product.NeverOutOfstock && isLazyLoadingForProductInfoEnabled) ? "disabled" : disableAddToCart;
122     			maxQty = product.StockLevel;
123     		}
124     
125     		disableAddToCart = whenVariantsExist == "disable" && product.VariantInfo.VariantInfo != null && string.IsNullOrEmpty(product.VariantId) ? "disabled" : disableAddToCart;
126     
127     		if (unitsSelector && product.UnitOptions.Count > 0)
128     		{
129     			<form method="post" action="/Default.aspx?ID=@(Pageview.Page.ID)&ProductId=@product.Id" id="UnitSelectorForm_@(product.Id)_@(product.VariantId.Replace(".", "_"))_@Model.ID">
130     				<input type="hidden" name="redirect" value="false">
131     				<input type="hidden" name="VariantID" value="@product.VariantId">
132     				<input type="hidden" name="UnitID" class="js-unit-id" value="@unitId">
133     			</form>
134     		}
135     
136     		<div class="d-flex @horizontalAlign @fullWidth js-input-group item_@Model.Item.SystemName.ToLower()">
137     			<form method="post" action="@url" class="@fullWidth" style="z-index: 1">
138     				<input type="hidden" name="redirect" value="false">
139     				<input type="hidden" name="ProductId" value="@product.Id">
140     				<input type="hidden" name="ProductName" value="@HtmlEncoder.HtmlEncode(product.Name)">
141     				<input type="hidden" name="ProductVariantName" value="@product.VariantName">
142     				<input type="hidden" name="ProductCurrency" value="@Dynamicweb.Ecommerce.Common.Context.Currency.Code">
143     				<input type="hidden" name="ProductPrice" value="@PriceViewModelExtensions.ToStringInvariant(product.Price)">
144     				<input type="hidden" name="ProductReferer" value="component_ProductAddToCart">
145     				<input type="hidden" name="cartcmd" value="add">
146     				<input type="submit" class="d-none" onclick="event.preventDefault(); swift.Cart.Update(event)"> @* Fix for enterKey should not redirect to minicart page *@
147     
148     				@if (!string.IsNullOrEmpty(product.VariantId))
149     				{
150     					<input type="hidden" name="VariantId" value="@product.VariantId">
151     				}
152     
153     				<template class="js-step-quantity-warning">
154     					<div class="modal-header">
155     						<h1 class="modal-title fs-5">@Translate("The quantity is not valid")</h1>
156     						<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
157     					</div>
158     					<div class="modal-body">
159     						@Translate("Please select a quantity that is dividable by") @stepQty
160     					</div>
161     				</template>
162     
163     
164     				<template class="js-min-quantity-warning">
165     					<div class="modal-header">
166     						<h1 class="modal-title fs-5">@Translate("The product could not be added to the cart")</h1>
167     						<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
168     					</div>
169     					<div class="modal-body">
170     						@Translate("The quantity is not valid. You must buy at least") @product.PurchaseMinimumQuantity
171     					</div>
172     				</template>
173     
174     
175     				@if (userHasPendingQuote)
176     				{
177     					<input type="hidden" name="PendingQuote" value="true">
178     
179     					<template class="js-pending-quote-notice">
180     						<div class="modal-header">
181     							<h1 class="modal-title fs-5">@Translate("Pending Quote")</h1>
182     							<button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="@Translate("Close")"></button>
183     						</div>
184     						<div class="modal-body">
185     							@Translate("You need to complete your current quote or empty the cart before adding this product to cart.")
186     						</div>
187     					</template>
188     				}
189     
190     				@if (quantitySelector || (!anonymousUser && product.VariantInfo.VariantInfo != null) || (!anonymousUser && favoritesSelector))
191     				{
192     					<input type="hidden" id="Unit_@(product.Id)_@product.VariantId.Replace(".", "_")" name="UnitID" value="@unitId" />
193     				}
194     
195     				<div class="d-flex flex-row w-100">
196     					@if (!quantitySelector)
197     					{
198     						<input id="Quantity_@(product.Id)_@product.VariantId.Replace(".", "_")" class="swift_quantity_field" name="Quantity" value="@valueQty" type="hidden" @disableAddToCart>
199     					}
200     
201     					@if (unitsSelector && product.UnitOptions.Count > 0)
202     					{
203     						string selectedUnitName = !string.IsNullOrEmpty(unitId) && product?.UnitOptions != null ? unitId : product.UnitOptions.FirstOrDefault<UnitOptionViewModel>().Name;
204     
205     						foreach (var unitOption in product.UnitOptions)
206     						{
207     							if (unitOption.Id == unitId)
208     							{
209     								selectedUnitName = unitOption.Name;
210     							}
211     						}
212     
213     						<div class="d-flex flex-column gap-2 w-100">
214     							<div class="input-group input-primary-button-group flex-nowrap@(inputSize)">
215     								@if (!anonymousUser && favoritesSelector)
216     								{
217     									@RenderPartial("Components/ToggleFavorite.cshtml", product)
218     								}
219     
220     								@if (quantitySelector)
221     								{
222     									<input id="Quantity_@(product.Id)_@product.VariantId.Replace(".", "_")" name="Quantity" value="@valueQty" step="@stepQty" min="@minQty" max="@maxQty" class="form-control swift_quantity-field" style="min-width: 80px; max-width: 100px; z-index: 1" type="number" @disableAddToCart>
223     								}
224     
225     								<button class="btn btn-secondary @flexFill dropdown-toggle" type="button" data-bs-toggle="dropdown" aria-expanded="false">
226     									@selectedUnitName
227     								</button>
228     
229     								<ul class="dropdown-menu swift_unit-field">
230     									@foreach (var unitOption in product.UnitOptions)
231     									{
232     										var selectedUnit = unitOption.Id == unitId ? "selected" : "";
233     
234     										<li>
235     											<button type="button" class="btn dropdown-item" data-value="@unitOption.Id" onclick="document.querySelector('#UnitSelectorForm_@(product.Id)_@(product.VariantId.Replace(".", "_"))_@Model.ID').querySelector('.js-unit-id').value = this.getAttribute('data-value');
236     																										document.querySelector('#Unit_@(product.Id)_@product.VariantId.Replace(".", "_")').value = this.getAttribute('data-value');
237     																										swift.PageUpdater.Update(document.querySelector('#UnitSelectorForm_@(product.Id)_@(product.VariantId.Replace(".", "_"))_@Model.ID'))">
238     												<span>@unitOption.Name</span>
239     												<span>
240     													@if (unitOption.StockLevel > 0 || unitOption.NeverOutOfStock)
241     													{
242     														if (!Model.Item.GetBoolean("HideInventory") && !unitOption.NeverOutOfStock)
243     														{
244     															<span class="small text-success">@unitOption.StockLevel @Translate("In stock")</span>
245     														}
246     														else
247     														{
248     															<span class="small text-success">@Translate("In stock")</span>
249     														}
250     													}
251     													else
252     													{
253     														<span class="small text-danger">@Translate("Out of Stock")</span>
254     													}
255     												</span>
256     											</button>
257     										</li>
258     									}
259     								</ul>
260     							</div>
261     							<button type="button" onclick="swift.Cart.Update(event)" class="btn btn-primary @(buttonSize) js-add-to-cart-button" style="white-space: nowrap" @disableAddToCart title="@Translate("Add to cart")" id="AddToCartButton@(product.Id)_@Pageview.CurrentParagraph.ID">
262     								@if (!Model.Item.GetBoolean("HideButtonText"))
263     								{
264     									<span class="text-nowrap d-flex align-items-center justify-content-center gap-2">
265     										@addToCartLabel
266     									</span>
267     								}
268     								else
269     								{
270     									@addToCartLabel
271     								}
272     							</button>
273     						</div>
274     					}
275     					else
276     					{
277     						if (!anonymousUser && favoritesSelector)
278     						{
279     							@RenderPartial("Components/ToggleFavorite.cshtml", product)
280     						}
281     
282     						<div class="input-group input-primary-button-group flex-nowrap@(inputSize)">
283     							@if (quantitySelector)
284     							{
285     								<input id="Quantity_@(product.Id)_@product.VariantId.Replace(".", "_")" name="Quantity" value="@valueQty" step="@stepQty" min="@minQty" max="@maxQty" class="form-control swift_quantity-field" style="min-width: 60px; max-width: 100px; z-index: 1" type="number" @disableAddToCart>
286     							}
287     
288     							<button type="button" onclick="swift.Cart.Update(event)" class="btn btn-primary @(buttonSize) @flexFill js-add-to-cart-button" style="white-space: nowrap" @disableAddToCart title="@Translate("Add to cart")" id="AddToCartButton@(product.Id)_@Pageview.CurrentParagraph.ID">
289     								@if (!Model.Item.GetBoolean("HideButtonText"))
290     								{
291     									<span class="text-nowrap d-flex align-items-center justify-content-center gap-2">
292     										@addToCartLabel
293     									</span>
294     								}
295     								else
296     								{
297     									@addToCartLabel
298     								}
299     							</button>
300     						</div>
301     					}
302     				</div>
303     			</form>
304     		</div>
305     	}
306     	else if (whenVariantsExist == "modal")
307     	{
308     		string ButtonShape = Model.Item.GetRawValueString("VariantButtonShape", "square");
309     		string buttonAspectRatio = Model.Item.GetRawValueString("VariantImageAspectRatio", "56%");
310     
311     		string buttonText = Translate("Select");
312     		string variantId = !string.IsNullOrWhiteSpace(product.VariantId) ? product.VariantId : product.DefaultVariantId;
313     
314     		string variantSelectorServicePageId = !string.IsNullOrEmpty(Model.Item.GetString("VariantSelectorServicePageId")) ? Model.Item.GetLink("VariantSelectorServicePageId").PageId.ToString() : "";
315     		variantSelectorServicePageId = variantSelectorServicePageId != "" ? variantSelectorServicePageId : GetPageIdByNavigationTag("VariantSelectorService").ToString();
316     
317     		<div class="d-flex @horizontalAlign w-100 item_@Model.Item.SystemName.ToLower()">
318     			@if (!anonymousUser && favoritesSelector)
319     			{
320     				@RenderPartial("Components/ToggleFavorite.cshtml", product)
321     			}
322     			<form action="/Default.aspx?ID=@variantSelectorServicePageId" data-response-target-element="DynamicModalContent" data-preloader="inline" style="z-index: 1" class="@fullWidth">
323     				<input type="hidden" name="ProductID" value="@product.Id">
324     				<input type="hidden" name="VariantID" value="@variantId">
325     				<input type="hidden" name="QuantitySelector" value="@quantitySelector.ToString()">
326     				<input type="hidden" name="HideInventory" value="@hideInventory.ToString()">
327     				<input type="hidden" name="HideStockState" value="@hideStockState.ToString()">
328     				<input type="hidden" name="ButtonLayout" value="@ButtonShape">
329     				<input type="hidden" name="ButtonAspectRatio" value="@buttonAspectRatio">
330     				<input type="hidden" name="VariantSelectorServicePage" value="@variantSelectorServicePageId">
331     				<input type="hidden" name="ViewType" value="ModalContent">
332     				@if (isLazyLoadingForProductInfoEnabled)
333     				{
334     					@* If lazy loading is enabled, bypass it because we're loading a modal window, so render everything as if it was server-side *@
335     					<input type="hidden" name="getproductinfo" value="true">
336     				}
337     				<button type="button" onclick="swift.PageUpdater.Update(event)" class="btn btn-primary@(buttonSize) @fullWidth" title="@Translate("Select")" data-bs-toggle="modal" data-bs-target="#DynamicModal" id="OpenVariantSelectorModal@(product.Id)_@Pageview.CurrentParagraph.ID">@buttonText</button>
338     			</form>
339     		</div>
340     	}
341     }
342     else if (Pageview.IsVisualEditorMode)
343     {
344     	<div class="alert alert-dark m-0">@Translate("No products available")</div>
345     }
346