Correcting lost form values when a comment is not valid

Work Item: 16817

--HG--
branch : dev

src/Orchard.Web/Modules/Orchard.Comments/Controllers/CommentController.cs

@@ -7,8 +7,6 @@ using Orchard.Comments.ViewModels;
 using Orchard.ContentManagement;
 using Orchard.Localization;
 using Orchard.UI.Notify;
-using Orchard.Utility.Extensions;
-using System.Text.RegularExpressions;
 
 namespace Orchard.Comments.Controllers {
     public class CommentController : Controller {
@@ -34,15 +32,18 @@ namespace Orchard.Comments.Controllers {
             
             var viewModel = new CommentsCreateViewModel();
 
-            if (TryUpdateModel(viewModel)) {
+            TryUpdateModel(viewModel);
-                var context = new CreateCommentContext {
-                    Author = viewModel.Name,
-                    CommentText = viewModel.CommentText,
-                    Email = viewModel.Email,
-                    SiteName = viewModel.SiteName,
-                    CommentedOn = viewModel.CommentedOn
-                };
             
+            var context = new CreateCommentContext {
+                Author = viewModel.Name,
+                CommentText = viewModel.CommentText,
+                Email = viewModel.Email,
+                SiteName = viewModel.SiteName,
+                CommentedOn = viewModel.CommentedOn
+            };
+
+
+            if (ModelState.IsValid) {
                 if (!String.IsNullOrEmpty(context.SiteName) && !context.SiteName.StartsWith("http://") && !context.SiteName.StartsWith("https://")) {
                     context.SiteName = "http://" + context.SiteName;
                 }
@@ -58,6 +59,13 @@ namespace Orchard.Comments.Controllers {
                 }
             }
 
+            if(!ModelState.IsValid) {
+                TempData["CreateCommentContext.Name"] = context.Author;
+                TempData["CreateCommentContext.CommentText"] = context.CommentText;
+                TempData["CreateCommentContext.Email"] = context.Email;
+                TempData["CreateCommentContext.SiteName"] = context.SiteName;
+            }
+
             return !String.IsNullOrEmpty(returnUrl)
                 ? Redirect(returnUrl)
                 : Redirect("~/");

src/Orchard.Web/Modules/Orchard.Comments/Views/Parts/Comments.cshtml

@@ -3,6 +3,14 @@
 @using Orchard.Security;
 @using Orchard.Utility.Extensions;
 
+@{
+	var contextExists = TempData["CreateCommentContext.Name"] != null;
+	var name = Convert.ToString(TempData["CreateCommentContext.Name"]);
+	var commentText = Convert.ToString(TempData["CreateCommentContext.CommentText"]);
+	var email = Convert.ToString(TempData["CreateCommentContext.Email"]);
+	var siteName = Convert.ToString(TempData["CreateCommentContext.SiteName"]);
+}
+
 @if (Model.ContentPart.Comments.Count > 0) {
 <div id="comments">
     <h2 class="comment-count">@T.Plural("1 Comment", "{0} Comments", (int)Model.ContentPart.Comments.Count)</h2>
@@ -30,15 +38,15 @@ using (Html.BeginForm("Create", "Comment", new { area = "Orchard.Comments" }, Fo
     <ol>
         <li>
             <label for="Name">@T("Name")</label>
-            <input id="Name" class="text" name="Name" type="text" />
+            <input id="Name" class="text" name="Name" type="text" value="@(contextExists ? name : String.Empty)" />
         </li>
         <li>
             <label for="Email">@T("Email")</label>
-            <input id="Email" class="text" name="Email" type="text" />
+            <input id="Email" class="text" name="Email" type="text" value="@(contextExists ? email : String.Empty)"/>
         </li>
         <li>
             <label for="SiteName">@T("Url")</label>
-            <input id="SiteName" class="text" name="SiteName" type="text" />
+            <input id="SiteName" class="text" name="SiteName" type="text" value="@(contextExists ? siteName : String.Empty)"/>
         </li>
      </ol>
     </fieldset>
@@ -52,7 +60,7 @@ using (Html.BeginForm("Create", "Comment", new { area = "Orchard.Comments" }, Fo
     <ol>
         <li>
             <label for="comment-text">@T("Comment")</label>
-            <textarea id="comment-text" rows="10" cols="30" name="CommentText"></textarea>
+            <textarea id="comment-text" rows="10" cols="30" name="CommentText">@(contextExists ? commentText : String.Empty)</textarea>
         </li>
         <li>
             <button class="primaryAction" type="submit">@T("Submit Comment")</button>