1 files changed, 28 insertions, 0 deletions
diff --git a/src/SMAPI.Web/Framework/Extensions.cs b/src/SMAPI.Web/Framework/Extensions.cs
index e0da1424..3a246245 100644
--- a/src/SMAPI.Web/Framework/Extensions.cs
+++ b/src/SMAPI.Web/Framework/Extensions.cs
@@ -1,14 +1,24 @@
 using System;
 using JetBrains.Annotations;
+using Microsoft.AspNetCore.Html;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
+using Microsoft.AspNetCore.Mvc.Razor;
+using Microsoft.AspNetCore.Mvc.Rendering;
 using Microsoft.AspNetCore.Routing;
+using Newtonsoft.Json;
 
 namespace StardewModdingAPI.Web.Framework
 {
     /// <summary>Provides extensions on ASP.NET Core types.</summary>
     public static class Extensions
     {
+        /*********
+        ** Public methods
+        *********/
+        /****
+        ** View helpers
+        ****/
         /// <summary>Get a URL with the absolute path for an action method. Unlike <see cref="IUrlHelper.Action"/>, only the specified <paramref name="values"/> are added to the URL without merging values from the current HTTP request.</summary>
         /// <param name="helper">The URL helper to extend.</param>
         /// <param name="action">The name of the action method.</param>
@@ -18,6 +28,7 @@ namespace StardewModdingAPI.Web.Framework
         /// <returns>The generated URL.</returns>
         public static string PlainAction(this IUrlHelper helper, [AspMvcAction] string action, [AspMvcController] string controller, object values = null, bool absoluteUrl = false)
         {
+            // get route values
             RouteValueDictionary valuesDict = new RouteValueDictionary(values);
             foreach (var value in helper.ActionContext.RouteData.Values)
             {
@@ -25,14 +36,31 @@ namespace StardewModdingAPI.Web.Framework
                     valuesDict[value.Key] = null; // explicitly remove it from the URL
             }
 
+            // get relative URL
             string url = helper.Action(action, controller, valuesDict);
+            if (url == null && action.EndsWith("Async"))
+                url = helper.Action(action[..^"Async".Length], controller, valuesDict);
+
+            // get absolute URL
             if (absoluteUrl)
             {
                 HttpRequest request = helper.ActionContext.HttpContext.Request;
                 Uri baseUri = new Uri($"{request.Scheme}://{request.Host}");
                 url = new Uri(baseUri, url).ToString();
             }
+
             return url;
         }
+
+        /// <summary>Get a serialized JSON representation of the value.</summary>
+        /// <param name="page">The page to extend.</param>
+        /// <param name="value">The value to serialize.</param>
+        /// <returns>The serialized JSON.</returns>
+        /// <remarks>This bypasses unnecessary validation (e.g. not allowing null values) in <see cref="IJsonHelper.Serialize"/>.</remarks>
+        public static IHtmlContent ForJson(this RazorPageBase page, object value)
+        {
+            string json = JsonConvert.SerializeObject(value);
+            return new HtmlString(json);
+        }
     }
 }