added JsonErrorFilter to automatically handle failing ajax calls.

NzbDrone.Web/Controllers/AddSeriesController.cs

@@ -9,6 +9,7 @@
 using NzbDrone.Core.Providers;
 using NzbDrone.Core.Providers.Core;
 using NzbDrone.Core.Repository;
+using NzbDrone.Web.Filters;
 using NzbDrone.Web.Models;
 
 namespace NzbDrone.Web.Controllers
@@ -130,7 +131,7 @@ public JsonResult AddExistingSeries(string path, string seriesName, int seriesId
 
             catch (Exception ex)
             {
-                return Json(new NotificationResult() { Title = "Failed", Text  = ex.Message, NotificationType = NotificationType.Error});
+                return Json(new NotificationResult() { Title = "Failed", Text = ex.Message, NotificationType = NotificationType.Error });
             }
         }
 
@@ -176,31 +177,20 @@ public ActionResult QuickAdd()
         }
 
 
-        //Root Directory
         [HttpPost]
+        [JsonErrorFilter("Can't add root folder")]
         public JsonResult SaveRootDir(string path)
         {
             if (String.IsNullOrWhiteSpace(path))
-                return new JsonResult { Data = "failed" };
+                NotificationResult.Error("Can't add root folder", "Path can not be empty");
 
             //Don't let a user add a rootDir that is the same as their SABnzbd TV Directory
             if (path.Equals(_configProvider.SabDropDirectory, StringComparison.InvariantCultureIgnoreCase))
-                return new JsonResult { Data = "failed" };
+                NotificationResult.Error("Can't add root folder", "Path can not be same as sab folder.");
 
-            try
-            {
             _rootFolderProvider.Add(new RootDir { Path = path });
 
-            }
-            catch (Exception ex)
-            {
-                Logger.Debug("Failed to save Root Dir");
-                Logger.DebugException(ex.Message, ex);
-
-                return new JsonResult { Data = "failed" };
-            }
-
-            return new JsonResult { Data = "ok" };
+            return NotificationResult.Info("Root Folder saved", "Root foler saved successfully.");
         }
 
         [HttpGet]

NzbDrone.Web/Filters/JsonErrorFilter.cs

@@ -0,0 +1,24 @@
+using System.Linq;
+using System.Web.Mvc;
+using NzbDrone.Web.Models;
+
+namespace NzbDrone.Web.Filters
+{
+    public class JsonErrorFilter : FilterAttribute, IExceptionFilter
+    {
+        private readonly string _errorTitle;
+
+        public JsonErrorFilter(string errorTitle)
+        {
+            _errorTitle = errorTitle;
+        }
+
+        public void OnException(ExceptionContext filterContext)
+        {
+            filterContext.Result = NotificationResult.Error(_errorTitle, filterContext.Exception.Message);
+            filterContext.ExceptionHandled = true;
+        }
+
+
+    }
+}

NzbDrone.Web/Models/NotificationResult.cs

@@ -1,3 +1,5 @@
+using System.Web.Mvc;
+
 namespace NzbDrone.Web.Models
 {
     public class NotificationResult
@@ -7,13 +9,31 @@ public NotificationResult()
             Text = string.Empty;
         }
 
-        public bool IsMessage { get { return true; } }
-
         public string Title { get; set; }
         public string Text { get; set; }
         public NotificationType NotificationType { get; set; }
 
 
+        public static JsonResult Info(string title, string text)
+        {
+            return GetJsonResult(NotificationType.Error, title, text);
+        }
+
+        public static JsonResult Error(string title, string text)
+        {
+            return GetJsonResult(NotificationType.Error, title, text);
+        }
+
+        public static JsonResult GetJsonResult(NotificationType notificationType, string title, string text)
+        {
+            return new JsonResult
+            {
+                Data = new NotificationResult { NotificationType = notificationType, Title = title, Text = text },
+                ContentType = null,
+                ContentEncoding = null,
+                JsonRequestBehavior = JsonRequestBehavior.AllowGet
+            };
+        }
     }
 
     public enum NotificationType

NzbDrone.Web/NzbDrone.Web.csproj

@@ -199,6 +199,7 @@
     </Compile>
     <Compile Include="App_Start\EntityFramework.SqlServerCompact.cs" />
     <Compile Include="App_Start\MiniProfiler.cs" />
+    <Compile Include="Filters\JsonErrorFilter.cs" />
     <Compile Include="Controllers\CommandController.cs" />
     <Compile Include="Controllers\DirectoryController.cs" />
     <Compile Include="Controllers\EpisodeController.cs" />

NzbDrone.Web/Scripts/NzbDrone/Notification.js

@@ -12,8 +12,6 @@
     $.ajaxPrefilter(function (options, originalOptions, jqXHR) {
 
         jqXHR.success(function (data) {
-            //Check if the response is a message type,
-            if (data.IsMessage) {
             if (data.NotificationType === 0) {
                 $.gritter.add({
                     title: data.Title,
@@ -22,15 +20,16 @@
                     class_name: 'gritter-success'
                 });
             }
-                else {
+            else if (data.NotificationType === 1) {
                 $.gritter.add({
                     title: data.Title,
                     text: data.Text,
                     image: '../../content/images/error.png',
-                        class_name: 'gritter-fail'
+                    class_name: 'gritter-fail',
+                    time: 10000
                 });
             }
-            }
+
         });
 
         jqXHR.error(function (xhr, ajaxOptions, thrownError) {
@@ -40,7 +39,8 @@
                     title: 'Request failed',
                     text: this.url,
                     image: '../../content/images/error.png',
-                    class_name: 'gritter-fail'
+                    class_name: 'gritter-fail',
+                    time: 10000
                 });
             }
         });