Fix variation context accessor

src/Umbraco.Web/Models/PublishedContent/HttpContextVariationContextAccessor.cs

@@ -0,0 +1,28 @@
+using Umbraco.Core.Models.PublishedContent;
+
+namespace Umbraco.Web.Models.PublishedContent
+{
+    /// <summary>
+    /// Implements <see cref="IVariationContextAccessor"/> on top of <see cref="IHttpContextAccessor"/>.
+    /// </summary>
+    public class HttpContextVariationContextAccessor : IVariationContextAccessor
+    {
+        public const string ContextKey = "Umbraco.Web.Models.PublishedContent.DefaultVariationContextAccessor";
+        public readonly IHttpContextAccessor HttpContextAccessor;
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="HttpContextVariationContextAccessor"/> class.
+        /// </summary>
+        public HttpContextVariationContextAccessor(IHttpContextAccessor httpContextAccessor)
+        {
+            HttpContextAccessor = httpContextAccessor;
+        }
+
+        /// <inheritdoc />
+        public VariationContext VariationContext
+        {
+            get => (VariationContext) HttpContextAccessor.HttpContext.Items[ContextKey];
+            set => HttpContextAccessor.HttpContext.Items[ContextKey] = value;
+        }
+    }
+}