From 1f47abd758038bce280da89ac637b24ca445e4b9 Mon Sep 17 00:00:00 2001
From: "N. Taylor Mullen" <nimullen@microsoft.com>
Date: Wed, 2 Apr 2014 16:11:53 -0700
Subject: [PATCH] Implement DisplayForModel Html Helper.

Essentially add extension methods and call through to infrastructure.
---
 .../Html/HtmlHelper.cs                        | 17 ++++++++++
 .../DisplayForModelExtensions.cs              | 31 +++++++++++++++++++
 .../IHtmlHelperOfT.cs                         |  9 ++++++
 3 files changed, 57 insertions(+)
 create mode 100644 src/Microsoft.AspNet.Mvc.Rendering/Html/TemplatedHelpers/DisplayForModelExtensions.cs

diff --git a/src/Microsoft.AspNet.Mvc.Rendering/Html/HtmlHelper.cs b/src/Microsoft.AspNet.Mvc.Rendering/Html/HtmlHelper.cs
index 6f7b403bc5..278cf11061 100644
--- a/src/Microsoft.AspNet.Mvc.Rendering/Html/HtmlHelper.cs
+++ b/src/Microsoft.AspNet.Mvc.Rendering/Html/HtmlHelper.cs
@@ -175,6 +175,23 @@ namespace Microsoft.AspNet.Mvc.Rendering
                                            additionalViewData);
         }
 
+        public virtual HtmlString DisplayForModel(string templateName,
+                                                  string htmlFieldName,
+                                                  object additionalViewData)
+        {
+            var templateBuilder = new TemplateBuilder(ViewContext,
+                                                      ViewData,
+                                                      ViewData.ModelMetadata,
+                                                      htmlFieldName,
+                                                      templateName,
+                                                      readOnly: true,
+                                                      additionalViewData: additionalViewData);
+
+            var templateResult = templateBuilder.Build();
+
+            return new HtmlString(templateResult);
+        }
+
         /// <inheritdoc />
         public virtual HtmlString Name(string name)
         {
diff --git a/src/Microsoft.AspNet.Mvc.Rendering/Html/TemplatedHelpers/DisplayForModelExtensions.cs b/src/Microsoft.AspNet.Mvc.Rendering/Html/TemplatedHelpers/DisplayForModelExtensions.cs
new file mode 100644
index 0000000000..776612fe4f
--- /dev/null
+++ b/src/Microsoft.AspNet.Mvc.Rendering/Html/TemplatedHelpers/DisplayForModelExtensions.cs
@@ -0,0 +1,31 @@
+
+namespace Microsoft.AspNet.Mvc.Rendering
+{
+    public static class DisplayForModelExtensions
+    {
+        public static HtmlString DisplayForModel<TModel>(this IHtmlHelper<TModel> html)
+        {
+            return html.DisplayForModel(templateName: null, htmlFieldName: null, additionalViewData: null);
+        }
+
+        public static HtmlString DisplayForModel<TModel>(this IHtmlHelper<TModel> html, object additionalViewData)
+        {
+            return html.DisplayForModel(templateName: null, htmlFieldName: null, additionalViewData: additionalViewData);
+        }
+
+        public static HtmlString DisplayForModel<TModel>(this IHtmlHelper<TModel> html, string templateName)
+        {
+            return html.DisplayForModel(templateName, htmlFieldName: null, additionalViewData: null);
+        }
+
+        public static HtmlString DisplayForModel<TModel>(this IHtmlHelper<TModel> html, string templateName, object additionalViewData)
+        {
+            return html.DisplayForModel(templateName, htmlFieldName: null, additionalViewData: additionalViewData);
+        }
+
+        public static HtmlString DisplayForModel<TModel>(this IHtmlHelper<TModel> html, string templateName, string htmlFieldName)
+        {
+            return html.DisplayForModel(templateName, htmlFieldName, additionalViewData: null);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Mvc.Rendering/IHtmlHelperOfT.cs b/src/Microsoft.AspNet.Mvc.Rendering/IHtmlHelperOfT.cs
index 1551a06dfc..fd9936af33 100644
--- a/src/Microsoft.AspNet.Mvc.Rendering/IHtmlHelperOfT.cs
+++ b/src/Microsoft.AspNet.Mvc.Rendering/IHtmlHelperOfT.cs
@@ -73,6 +73,15 @@ namespace Microsoft.AspNet.Mvc.Rendering
                                                      string htmlFieldName,
                                                      object additionalViewData);
 
+        /// <summary>
+        /// Returns HTML markup for each property in the model, using the specified template, an HTML field ID, and additional view data.
+        /// </summary>
+        /// <param name="templateName">The name of the template that is used to render the object.</param>
+        /// <param name="htmlFieldName">A string that is used to disambiguate the names of HTML input elements that are rendered for properties that have the same name.</param>
+        /// <param name="additionalViewData">An anonymous object that can contain additional view data that will be merged into the <see cref="ViewDataDictionary{TModel}"/> instance that is created for the template.</param>
+        /// <returns>The HTML markup for each property in the model.</returns>
+        HtmlString DisplayForModel(string templateName, string htmlFieldName, object additionalViewData);
+
         /// <summary>
         /// Converts the value of the specified object to an HTML-encoded string.
         /// </summary>