SABnzbd settings will now dynamically get the categories available from SABnzbd when the category drop-box gets focus, it will use values on the page so there is no need to save your settings first.

NzbDrone.Web/Controllers/CommandController.cs

@@ -3,17 +3,22 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Web;
 using System.Web.Mvc;
+using NzbDrone.Core.Model;
+using NzbDrone.Core.Providers;
 using NzbDrone.Core.Providers.Jobs;
+using NzbDrone.Web.Models;
 
 namespace NzbDrone.Web.Controllers
 {
     public class CommandController : Controller
     {
         private readonly JobProvider _jobProvider;
+        private readonly SabProvider _sabProvider;
 
-        public CommandController(JobProvider jobProvider)
+        public CommandController(JobProvider jobProvider, SabProvider sabProvider)
         {
             _jobProvider = jobProvider;
+            _sabProvider = sabProvider;
         }
 
         public JsonResult RssSync()
@@ -37,5 +42,20 @@ namespace NzbDrone.Web.Controllers
 
             return new JsonResult { Data = "ok", JsonRequestBehavior = JsonRequestBehavior.AllowGet };
         }
+
+        [HttpPost]
+        public JsonResult GetSabnzbdCategories(string host, int port, string apiKey, string username, string password)
+        {
+            try
+            {
+                return new JsonResult {Data = _sabProvider.GetCategories(host, port, apiKey, username, password)};
+            }
+
+            catch (Exception ex)
+            {
+                //Todo: Log the error
+                throw;
+            }
+        }
     }
 }