Preserving filter information accross page calls

--HG--
branch : dev
extra : transplant_source : %80R%A2%04S%40%E8l%12%F3YYAv%C5w%A1%CFhk

src/Orchard.Web/Modules/Orchard.Users/Controllers/AdminController.cs

@@ -1,6 +1,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Web.Mvc;
+using System.Web.Routing;
 using Orchard.ContentManagement;
 using Orchard.Core.Common.Models;
 using Orchard.Core.Contents.Controllers;
@@ -95,6 +96,14 @@ namespace Orchard.Users.Controllers {
                     Pager = pagerShape
             };
 
+            // maintain previous route data when generating page links
+            var routeData = new RouteData();
+            routeData.Values.Add("Options.Filter", options.Filter);
+            routeData.Values.Add("Options.Search", options.Search);
+            routeData.Values.Add("Options.Order", options.Order);
+
+            pagerShape.RouteData(routeData);
+            
             return View(model);
         }
 

src/Orchard.Web/Modules/Orchard.Users/Views/Admin/Index.cshtml

@@ -36,6 +36,7 @@
             @Html.SelectOption(Model.Options.Order, UsersOrder.Name, T("Name").ToString())
             @Html.SelectOption(Model.Options.Order, UsersOrder.Email, T("Email").ToString())
         </select>
+		<input type="hidden" name="Page" value="1" />
         <button type="submit" name="submit.Filter" value="@T("Filter")">@T("Filter")</button>
     </fieldset>
     <fieldset>		

src/Orchard.Web/Themes/TheAdmin/Views/Pager.cshtml

@@ -25,6 +25,12 @@
     Model.Classes.Add("pager");
     Model.Classes.Add("group");
     var tag = Tag(Model, "ul");
+
+	if(Model.RouteData != null) {
+        foreach(var rd in Model.RouteData.Values) {
+            routeData[rd.Key] = rd.Value;
+        }		
+	}
 }
 
 @if (Model.TotalItemCount > 1) {