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_a3cc2ce40aaa441481a16cbe93e264ff.GetArticles(String itemType) in D:\dynamicweb.net\Solutions\Dynamicweb\hctswift.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Paragraph\Swift_ArticleList.cshtml:line 16
   at CompiledRazorTemplates.Dynamic.RazorEngine_a3cc2ce40aaa441481a16cbe93e264ff.Execute() in D:\dynamicweb.net\Solutions\Dynamicweb\hctswift.cloud.dynamicweb-cms.com\files\Templates\Designs\Swift\Paragraph\Swift_ArticleList.cshtml:line 52
   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>
  2     
  3     @functions
  4     {
  5     	private object GetArticles(string itemType)
  6     	{
  7     		string listSource = Model.Item.GetRawValueString("ListSource", Model.PageID.ToString());
  8     		string articleListSortOrder = Model.Item.GetRawValueString("ArticleListSortOrder", "Descending");
  9     		var parent = Dynamicweb.Context.Current.Request.QueryString.Get("list");
 10     		var query = string.IsNullOrEmpty(parent) ? listSource : parent;
 11     		var includeAllChildren = Model.Item.GetRawValueString("ListDepth", "all") == "all" ? true : false;
 12     		var listContext = Model.Item?.GetList("ListContext")?.GetRawValue().OfType<string>();
 13     		var filterString = string.Join(" or ", listContext.Select(item => $"Tags == \"{item}\" or Tags ends with \",{item}\" or Tags starts with \"{item},\" or Tags contains \",{item},\""));
 14     		int maxItemsInList = !string.IsNullOrEmpty(Model.Item.GetInt32("MaxItemsInList").ToString()) ? Model.Item.GetInt32("MaxItemsInList") : 10;
 15     
 16     		return RenderItemList(new
 17     		{
 18     			ItemType = itemType,
 19     			ListTemplate = "ItemPublisher/List/List.cshtml",
 20     			ItemFieldsList = "*",
 21     			ListSourceType = "Page",
 22     			ListSourcePage = query,
 23     			ListPageSize = maxItemsInList,
 24     			IncludeParagraphItems = true,
 25     			ListOrderBy = "PublishedDate",
 26     			ListSecondOrderBy = "Updated",
 27     			ListOrderByDirection = articleListSortOrder,
 28     			IncludeAllChildItems = includeAllChildren,
 29     			Filter = itemType == "Swift_Article" ? filterString : null // Filter only if "articles only"
 30     		});
 31     	}
 32     }
 33     
 34     @{
 35     	string listBehaviour = Model.Item.GetRawValueString("ListBehaviour", "articles");
 36     	string articleListLayout = Model.Item.GetRawValueString("ArticleListLayout", "grid");
 37     	string columnTheme = Model.Item.GetRawValueString("ColumnTheme", string.Empty).ToString().Replace(" ", "").Trim().ToLower();
 38     	string columnThemeClass = columnTheme != string.Empty ? " theme " + columnTheme + " p-3" + (articleListLayout == "carousel" ? " px-lg-4" : string.Empty) : string.Empty;
 39     
 40     	int maxItemsInList = !string.IsNullOrEmpty(Model.Item.GetInt32("MaxItemsInList").ToString()) ? Model.Item.GetInt32("MaxItemsInList") : 10;
 41     	
 42     	<div class="h-100@(columnThemeClass) item_@Model.Item.SystemName.ToLower()">
 43     		<div id="@Model.ID" class="user-select-none" style="scroll-margin-top:var(--header-height,150px)"></div>
 44     
 45     		@switch (articleListLayout)
 46     		{
 47     			case "grid":
 48     
 49     				{
 50     					if (listBehaviour == "articles")
 51     					{
 52     						@GetArticles("Swift_Article")
 53     					}
 54     					if (listBehaviour == "lists")
 55     					{
 56     						@GetArticles("Swift_ArticleListPage")
 57     					}
 58     				}
 59     
 60     				break;
 61     
 62     			case "carousel":
 63     				var carouselSettings = Model.Item.GetRawValueString("CarouselSettings", "4");
 64     				string slidesPerPage = $"slider-item-show{carouselSettings}";
 65     				string navigationStyle = $"{Model.Item.GetRawValueString("NavigationStyle", "slider-nav-round")}";
 66     				string navigationPlacement = $"{Model.Item.GetRawValueString("NavigationPlacement", "slider-nav-on-slides")}";
 67     				string indicatorStyle = $"{Model.Item.GetRawValueString("IndicatorStyle", string.Empty)}";
 68     				string revealSlides = Model.Item.GetRawValueString("RevealSlides", "reveal") == "reveal" ? "slider-item-reveal" : string.Empty;
 69     				string sliderItemsGap = Model.Item.GetRawValueString("SliderItemsGap", "slider-item-gap") == "slider-item-nogap" ? "slider-item-nogap" : string.Empty;
 70     				string navigationAlwaysVisible = (Model.Item.GetBoolean("NavigationAlwaysVisible")) ? "slider-nav-visible" : string.Empty;
 71     				string navigationVisibleOnTouch = (Model.Item.GetBoolean("NavigationVisibleOnTouch")) ? "slider-nav-touch" : string.Empty;
 72     				string navigationShowScrollbar = (Model.Item.GetBoolean("NavigationShowScrollbar")) ? "slider-nav-scrollbar" : string.Empty;
 73     				string scrollBarForceMobile = (Model.Item.GetBoolean("NavigationShowScrollbar")) ? "--swiffy-slider-track-height:0.5rem !important;" : string.Empty;
 74     				string navigationSmall = (Model.Item.GetBoolean("NavigationSmall")) ? "slider-nav-sm" : string.Empty;
 75     				string navigationInvertColors = (Model.Item.GetBoolean("NavigationInvertColors")) ? "slider-nav-dark" : string.Empty;
 76     				string navigationSlideEntirePage = (Model.Item.GetBoolean("NavigationSlideEntirePage")) ? "slider-nav-page" : string.Empty;
 77     				string navigationNoLoop = (Model.Item.GetBoolean("NavigationNoLoop")) ? "slider-nav-noloop" : string.Empty;
 78     				string indicatorsOutsideSlider = (Model.Item.GetBoolean("IndicatorsOutsideSlider") && indicatorStyle != string.Empty) ? "slider-indicators-outside" : string.Empty;
 79     				string indicatorsHighlightActive = (Model.Item.GetBoolean("IndicatorsHighlightActive")) ? "slider-indicators-highlight" : string.Empty;
 80     				string indicatorsInvertColors = (Model.Item.GetBoolean("IndicatorsInvertedColors")) ? "slider-indicators-dark" : string.Empty;
 81     				string indicatorsVisibleOnSmallDevices = (Model.Item.GetBoolean("IndicatorsVisibleOnSmallDevices")) ? "slider-indicators-sm" : string.Empty;
 82     				string animation = Model.Item.GetRawValueString("Animation", string.Empty) != string.Empty ? $"slider-nav-animation {Model.Item.GetRawValueString("Animation")}" : string.Empty;
 83     				string autoplay = (Model.Item.GetBoolean("Autoplay")) ? "slider-nav-autoplay" : string.Empty;
 84     				string autoplayInterval = Model.Item.GetRawValueString("AutoplayInterval", string.Empty);
 85     				bool hideSliderNavigation = false;
 86     
 87     				if (navigationStyle == "slider-nav-none")
 88     				{
 89     					hideSliderNavigation = true;
 90     				}
 91     
 92     				<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)">
 93     					<div class="slider-container pb-3 py-lg-3 px-lg-3 mt-lg-n3 mx-lg-n3">
 94     						@{
 95     							if (listBehaviour == "articles")
 96     							{
 97     								@GetArticles("Swift_Article")
 98     							}
 99     							if (listBehaviour == "lists")
100     							{
101     								@GetArticles("Swift_ArticleListPage")
102     							}
103     						}
104     					</div>
105     
106     					@if (!hideSliderNavigation)
107     					{
108     						<button type="button" title="@Translate("Previous slide")" class="slider-nav" style="z-index:1;">
109     							<span class="visually-hidden">@Translate("Previous slide")</span>
110     						</button>
111     						<button type="button" title="@Translate("Next slide")" class="slider-nav slider-nav-next" style="z-index:1;">
112     							<span class="visually-hidden">@Translate("Next slide")</span>
113     						</button>
114     					}
115     					@if (indicatorStyle != "slider-indicators-hidden")
116     					{
117     						<div class="slider-indicators" style="z-index:1;"></div>
118     					}
119     
120     					<script type="module" src="/Files/Templates/Designs/Swift/Assets/js/swiffy-slider.js"></script>
121     					<script>
122     						window.addEventListener("load", () => {
123     							swift.AssetLoader.Load('/Files/Templates/Designs/Swift/Assets/css/swiffy-slider.min.css', 'css');
124     							window.swiffyslider.initSlider(document.querySelector('#Slider_@Model.ID'));
125     							document.querySelector('#Slider_@Model.ID').style.opacity = 1;
126     							document.querySelector('#Slider_@Model.ID').style.visibility = "visible";
127     						});
128     					</script>
129     
130     					@if (indicatorStyle != "slider-indicators-hidden")
131     					{
132     						<script type="module">
133     						const slider = document.querySelector('#Slider_@Model.ID');
134     						const sliderContainer = slider.querySelector('.slider-container');
135     						let slides = sliderContainer.querySelectorAll('article');
136     						const sliderIndicators = slider.querySelector('.slider-indicators');
137     
138     						slides.forEach((slide,index) => {
139     							const indicator = document.createElement('template');
140     							indicator.innerHTML = `
141     								<button type="button" class="${index == 0 ? "active" : ""}" title='@Translate("Go to slide") ${index + 1}'>
142     									<span class="visually-hidden">@Translate("Go to slide") ${index + 1}</span>
143     								</button>
144     								`;
145     							sliderIndicators.appendChild(indicator.content);
146     						});
147     						</script>
148     					}
149     				</div>
150     
151     				break;
152     		}
153     	</div>
154     }
155