Inspiration

Error executing template "Designs/Swift/Paragraph/Swift_ArticleList.cshtml"
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Dynamicweb.Content.Items.Queries.Repository.IsPageAllowed(Page page)
   at Dynamicweb.Content.Items.Queries.Repository.GetPagesByIds(IEnumerable`1 parentIds, Boolean includeChildItems, Boolean checkPermissions, List`1& childPages)
   at Dynamicweb.Content.Items.Queries.Repository.SelectByParentPageIds(IEnumerable`1 parentIds, Query query, Boolean includeParagraphs, Boolean includeChildItems, Boolean checkPermissions, Boolean includeInheritedItems)
   at Dynamicweb.ItemPublisher.Frontend.GetItems()
   at Dynamicweb.ItemPublisher.Frontend.List()
   at Dynamicweb.ItemPublisher.Frontend.GetContent()
   at Dynamicweb.ItemPublisher.Frontend.GetContentBySettings(String settings)
   --- End of inner exception stack trace ---
   at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
   at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at Dynamicweb.Extensibility.AddIns.AddInManager.InvokeFunction(Object instance, String functionName, Object[] arguments)
   at Dynamicweb.Rendering.TemplateBase`1.RenderItemList(Object settings)
   at CompiledRazorTemplates.Dynamic.RazorEngine_1349fb05460343fc9f0bd10c17f41f06.<>c__DisplayClass0_0.<RenderArticleList>b__0(TextWriter __razor_helper_writer) in D:\dynamicweb.net\Solutions\Dynamicweb\skjernmaskinforretning.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Paragraph\Swift_ArticleList.cshtml:line 130
   at CompiledRazorTemplates.Dynamic.RazorEngine_1349fb05460343fc9f0bd10c17f41f06.Execute() in D:\dynamicweb.net\Solutions\Dynamicweb\skjernmaskinforretning.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Paragraph\Swift_ArticleList.cshtml:line 22
   at RazorEngine.Templating.TemplateBase.RazorEngine.Templating.ITemplate.Run(ExecuteContext context, TextWriter reader)
   at RazorEngine.Templating.RazorEngineService.RunCompile(ITemplateKey key, TextWriter writer, Type modelType, Object model, DynamicViewBag viewBag)
   at RazorEngine.Templating.RazorEngineServiceExtensions.<>c__DisplayClass16_0.<RunCompile>b__0(TextWriter writer)
   at RazorEngine.Templating.RazorEngineServiceExtensions.WithWriter(Action`1 withWriter)
   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>
@{
	string listSource = Model.Item.GetRawValueString("ListSource", Model.PageID.ToString());
	string listBehaviour = Model.Item.GetRawValueString("ListBehaviour", "articles");
	string articleListSortOrder = Model.Item.GetRawValueString("ArticleListSortOrder", "Descending");
	string articleListLayout = Model.Item.GetRawValueString("ArticleListLayout", "grid");
	string columnTheme = Model.Item.GetRawValueString("ColumnTheme", string.Empty);
	string columnThemeClass = columnTheme != string.Empty ? " theme " + columnTheme + " p-3" + (articleListLayout == "carousel" ? " px-lg-4" : string.Empty) : string.Empty;
	int maxItemsInList = !string.IsNullOrEmpty(Model.Item.GetInt32("MaxItemsInList").ToString()) ? Model.Item.GetInt32("MaxItemsInList") : 10;
	<div class="h-100@(columnThemeClass) item_@Model.Item.SystemName.ToLower()">
		<a id="@Model.ID" class="user-select-none" style="scroll-margin-top:var(--header-height,150px)"></a>
	@switch (articleListLayout)
	{
		case "grid":
				{
					if (listBehaviour == "articles")
					{@RenderArticleList("Swift_Article", listSource, maxItemsInList, articleListSortOrder) }
				if (listBehaviour == "lists")
				{ @RenderArticleList("Swift_ArticleListPage", listSource, maxItemsInList, articleListSortOrder) }
		}
		break;
	case "carousel":
		var carouselSettings = Model.Item.GetRawValueString("CarouselSettings", "4");
		string slidesPerPage = $"slider-item-show{carouselSettings}";
		string navigationStyle = $"{Model.Item.GetRawValueString("NavigationStyle", "slider-nav-round")}";
		string navigationPlacement = $"{Model.Item.GetRawValueString("NavigationPlacement", "slider-nav-on-slides")}";
		string indicatorStyle = $"{Model.Item.GetRawValueString("IndicatorStyle", string.Empty)}";
		string revealSlides = Model.Item.GetRawValueString("RevealSlides", "reveal") == "reveal" ? "slider-item-reveal" : string.Empty;
		string sliderItemsGap = Model.Item.GetRawValueString("SliderItemsGap", "slider-item-gap") == "slider-item-nogap" ? "slider-item-nogap" : string.Empty;
		string navigationAlwaysVisible = (Model.Item.GetBoolean("NavigationAlwaysVisible")) ? "slider-nav-visible" : string.Empty;
		string navigationVisibleOnTouch = (Model.Item.GetBoolean("NavigationVisibleOnTouch")) ? "slider-nav-touch" : string.Empty;
		string navigationShowScrollbar = (Model.Item.GetBoolean("NavigationShowScrollbar")) ? "slider-nav-scrollbar" : string.Empty;
		string scrollBarForceMobile = (Model.Item.GetBoolean("NavigationShowScrollbar")) ? "--swiffy-slider-track-height:0.5rem !important;" : string.Empty;
		string navigationSmall = (Model.Item.GetBoolean("NavigationSmall")) ? "slider-nav-sm" : string.Empty;
		string navigationInvertColors = (Model.Item.GetBoolean("NavigationInvertColors")) ? "slider-nav-dark" : string.Empty;
		string navigationSlideEntirePage = (Model.Item.GetBoolean("NavigationSlideEntirePage")) ? "slider-nav-page" : string.Empty;
		string navigationNoLoop = (Model.Item.GetBoolean("NavigationNoLoop")) ? "slider-nav-noloop" : string.Empty;
		string indicatorsOutsideSlider = (Model.Item.GetBoolean("IndicatorsOutsideSlider") && indicatorStyle != string.Empty) ? "slider-indicators-outside" : string.Empty;
		string indicatorsHighlightActive = (Model.Item.GetBoolean("IndicatorsHighlightActive")) ? "slider-indicators-highlight" : string.Empty;
		string indicatorsInvertColors = (Model.Item.GetBoolean("IndicatorsInvertedColors")) ? "slider-indicators-dark" : string.Empty;
		string indicatorsVisibleOnSmallDevices = (Model.Item.GetBoolean("IndicatorsVisibleOnSmallDevices")) ? "slider-indicators-sm" : string.Empty;
		string animation = Model.Item.GetRawValueString("Animation", string.Empty) != string.Empty ? $"slider-nav-animation {Model.Item.GetRawValueString("Animation")}" : string.Empty;
		string autoplay = (Model.Item.GetBoolean("Autoplay")) ? "slider-nav-autoplay" : string.Empty;
		string autoplayInterval = Model.Item.GetRawValueString("AutoplayInterval", string.Empty);
		bool hideSliderNavigation = false;
		if (navigationStyle == "slider-nav-none")
		{
			hideSliderNavigation = true;
		}
		<div id="Slider_@Model.ID" class="swiffy-slider @(slidesPerPage) @(navigationStyle) @(revealSlides) @(navigationPlacement) @(navigationAlwaysVisible) @(navigationVisibleOnTouch) @(sliderItemsGap) @(indicatorStyle) @(navigationShowScrollbar) @(navigationSmall) @(navigationInvertColors) @(indicatorsOutsideSlider) @(navigationNoLoop) @(indicatorsHighlightActive) @(indicatorsInvertColors) @(indicatorsVisibleOnSmallDevices) @(navigationSlideEntirePage) @(animation) @(autoplay) item_@Model.Item.SystemName.ToLower()" style="--swiffy-slider-nav-light:var(--swift-foreground-color);--swiffy-slider-nav-dark:var(--swift-background-color);visibility:hidden;opacity:0;@(scrollBarForceMobile)" data-slider-nav-autoplay-interval="@(autoplayInterval)">
			<div class="slider-container pb-3 py-lg-3 px-lg-3 mt-lg-n3 mx-lg-n3">
				@{
					if (listBehaviour == "articles")
					{ @RenderArticleList("Swift_Article", listSource, maxItemsInList, articleListSortOrder) }
				if (listBehaviour == "lists")
				{ @RenderArticleList("Swift_ArticleListPage", listSource, maxItemsInList, articleListSortOrder) }
				}
			</div>
			@if (!hideSliderNavigation)
			{
				<button type="button" title="@Translate("Previous slide")" class="slider-nav" style="z-index:1;">
					<span class="visually-hidden">@Translate("Previous slide")</span>
				</button>
				<button type="button" title="@Translate("Next slide")" class="slider-nav slider-nav-next" style="z-index:1;">
					<span class="visually-hidden">@Translate("Next slide")</span>
				</button>
			}
			@if (indicatorStyle != "slider-indicators-hidden")
			{
				<div class="slider-indicators" style="z-index:1;"></div>
			}
			<script type="module" src="/Files/Templates/Designs/Swift/Assets/js/swiffy-slider.js"></script>
			<script type="module">
					const slider = document.querySelector('#Slider_@Model.ID');
					swift.AssetLoader.Load('/Files/Templates/Designs/Swift/Assets/css/swiffy-slider.min.css', 'css');
					document.addEventListener('load.swift.assetloader', () => {
						swiffyslider.initSlider(slider);
						slider.style.opacity = 1;
						slider.style.visibility = "visible";
					});
			</script>
			@if (indicatorStyle != "slider-indicators-hidden")
			{
				<script type="module">
						const slider = document.querySelector('#Slider_@Model.ID');
						const sliderContainer = slider.querySelector('.slider-container');
						let slides = sliderContainer.querySelectorAll('article');
						const sliderIndicators = slider.querySelector('.slider-indicators');
						slides.forEach((slide,index) => {
							const indicator = document.createElement('template');
							indicator.innerHTML = `
								<button type="button" class="${index == 0 ? "active" : ""}" title='@Translate("Go to slide") ${index + 1}'>
									<span class="visually-hidden">@Translate("Go to slide") ${index + 1}</span>
								</button>
								`;
							sliderIndicators.appendChild(indicator.content);
						});
				</script>
			}
		</div>
		break;
}
	</div>
}
@helper RenderArticleList(string itemType, string listSource, int maxItemsInList, string articleListSortOrder)
{
	var parent = Dynamicweb.Context.Current.Request.QueryString.Get("list");
	var query = string.IsNullOrEmpty(parent) ? listSource : parent;
	var includeAllChildren = Model.Item.GetRawValueString("ListDepth", "all") == "all" ? true : false;
	var listContext = Model.Item?.GetRawValueString("ListContext", string.Empty).Split(new string[] { "," }, StringSplitOptions.RemoveEmptyEntries);
	var filterString = string.Join(" or ", listContext.Select(item => $"Tags == \"{item}\" or Tags ends with \",{item}\" or Tags starts with \"{item},\" or Tags contains \",{item},\""));
	@RenderItemList(new
	{
		ItemType = itemType,
		ListTemplate = "ItemPublisher/List/List.cshtml",
		ItemFieldsList = "*",
		ListSourceType = "Page",
		ListSourcePage = query,
		ListPageSize = maxItemsInList,
		IncludeParagraphItems = true,
		ListOrderBy = "PublishedDate",
		ListSecondOrderBy = "Updated",
		ListOrderByDirection = articleListSortOrder,
		IncludeAllChildItems = includeAllChildren,
		Filter = itemType == "Swift_Article" ? filterString : null // Filter only if "articles only"
	})
}