current nav should be nullable

Author: Mpdreamz

src/Elastic.Documentation.Site/_ViewModels.cs

@@ -18,7 +18,7 @@ public class GlobalLayoutViewModel
 	public required LayoutName? Layout { get; init; }
 
 	public required IReadOnlyCollection<PageTocItem> PageTocItems { get; init; }
-	public required INavigationItem CurrentNavigationItem { get; init; }
+	public required INavigationItem? CurrentNavigationItem { get; init; }
 	public required INavigationItem? Previous { get; init; }
 	public required INavigationItem? Next { get; init; }
 	public required string NavigationHtml { get; init; }
@@ -29,7 +29,8 @@ public class GlobalLayoutViewModel
 	public required bool AllowIndexing { get; init; }
 	public required Uri? CanonicalBaseUrl { get; init; }
 	public required GoogleTagManagerConfiguration GoogleTagManager { get; init; }
-	public string? CanonicalUrl => CanonicalBaseUrl is not null ? new Uri(CanonicalBaseUrl, CurrentNavigationItem.Url).ToString().TrimEnd('/') : null;
+	public string? CanonicalUrl => CanonicalBaseUrl is not null ?
+		new Uri(CanonicalBaseUrl, CurrentNavigationItem?.Url).ToString().TrimEnd('/') : null;
 	public required FeatureFlags Features { get; init; }
 
 	public required INavigationItem[] Parents { get; init; }

src/Elastic.Markdown/IO/DocumentationSet.cs

@@ -35,9 +35,7 @@ public interface IPositionalNavigation
 
 	INavigationItem? GetPrevious(MarkdownFile current);
 	INavigationItem? GetNext(MarkdownFile current);
-	INavigationItem GetCurrent(MarkdownFile file) =>
-		MarkdownNavigationLookup.TryGetValue(file.CrossLink, out var navigationItem)
-			? navigationItem : throw new InvalidOperationException($"Could not find navigation item for {file.CrossLink}");
+	INavigationItem? GetCurrent(MarkdownFile file) => MarkdownNavigationLookup.GetValueOrDefault(file.CrossLink);
 
 	INavigationItem[] GetParents(INavigationItem current)
 	{

src/Elastic.Markdown/Slices/IndexViewModel.cs

@@ -26,7 +26,7 @@ public class IndexViewModel
 	public required IReadOnlyCollection<PageTocItem> PageTocItems { get; init; }
 	public required MarkdownFile CurrentDocument { get; init; }
 
-	public required INavigationItem CurrentNavigationItem { get; init; }
+	public required INavigationItem? CurrentNavigationItem { get; init; }
 	public required INavigationItem? PreviousDocument { get; init; }
 	public required INavigationItem? NextDocument { get; init; }
 	public required INavigationItem[] Parents { get; init; }

src/Elastic.Markdown/Slices/Layout/_Breadcrumbs.cshtml

@@ -31,7 +31,7 @@
 			<a
 				itemprop="item"
 				href="@firstCrumb.Url"
-				@Htmx.GetHxAttributes(firstCrumb.Url, Model.CurrentNavigationItem.NavigationRoot.Id == firstCrumb.NavigationRoot.Id)
+				@Htmx.GetHxAttributes(firstCrumb.Url, Model.CurrentNavigationItem?.NavigationRoot.Id == firstCrumb.NavigationRoot.Id)
 			>
 				<span itemprop="name" class="hover:text-black">@firstCrumb.NavigationTitle</span>
 			</a>
@@ -54,7 +54,7 @@
 			<a
 				itemprop="item" 
 				href="@item.Url"
-				@Htmx.GetHxAttributes(item.Url, Model.CurrentNavigationItem.NavigationRoot.Id == item.NavigationRoot.Id)
+				@Htmx.GetHxAttributes(item.Url, Model.CurrentNavigationItem?.NavigationRoot.Id == item.NavigationRoot.Id)
 			>
 				<span itemprop="name" class="hover:text-black">@item.NavigationTitle</span>
 			</a>

src/Elastic.Markdown/Slices/Layout/_PrevNextNav.cshtml

@@ -7,7 +7,7 @@
 			{
 				<a 
 					href="@Model.Previous.Url"
-					@Htmx.GetHxAttributes(Model.Previous.Url, Model.CurrentNavigationItem.NavigationRoot.Id == Model.Previous.NavigationRoot.Id)
+					@Htmx.GetHxAttributes(Model.Previous.Url, Model.CurrentNavigationItem?.NavigationRoot.Id == Model.Previous.NavigationRoot.Id)
 					class="flex h-full items-center text-ink-light hover:black border-1 border-grey-20 hover:border-grey-80 rounded-lg p-6 shadow-md"
 				>
 					<svg class="size-6 mr-2" xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor">
@@ -25,7 +25,7 @@
 			{
 				<a 
 					href="@Model.Next.Url"
-					@Htmx.GetHxAttributes(Model.Next.Url, Model.CurrentNavigationItem.NavigationRoot.Id == Model.Next.NavigationRoot.Id)
+					@Htmx.GetHxAttributes(Model.Next.Url, Model.CurrentNavigationItem?.NavigationRoot.Id == Model.Next.NavigationRoot.Id)
 					class="flex h-full items-center justify-end text-ink-light hover:black border-1 border-grey-20 hover:border-grey-80 rounded-lg p-6 shadow-md text-right"
 				>
 					<div>