HistoryProvider will return History Items with Episode and SeriesTitle.

NzbDrone.Core/Providers/HistoryProvider.cs

@@ -25,9 +25,18 @@ namespace NzbDrone.Core.Providers
         {
         }
 
-        public virtual IEnumerable<History> AllItems()
+        public virtual List<History> AllItems()
         {
-            return _database.Query<History>("");
+            return _database.Fetch<History>("");
+        }
+
+        public virtual List<History> AllItemsWithRelationships()
+        {
+            return _database.Fetch<History, Episode>(@"
+                            SELECT History.*, Series.Title as SeriesTitle, Episodes.* FROM History 
+		                    INNER JOIN Series ON History.SeriesId = Series.SeriesId
+                            INNER JOIN Episodes ON History.EpisodeId = Episodes.EpisodeId
+                        ");
         }
 
         public virtual void Purge()

NzbDrone.Core/Repository/History.cs

@@ -16,5 +16,11 @@ namespace NzbDrone.Core.Repository
         public DateTime Date { get; set; }
         public bool IsProper { get; set; }
         public string Indexer { get; set; }
+
+        [ResultColumn]
+        public Episode Episode { get; set; }
+
+        [ResultColumn]
+        public string SeriesTitle { get; set; }
     }
 }

NzbDrone.Web/Controllers/HistoryController.cs

@@ -46,30 +46,20 @@ namespace NzbDrone.Web.Controllers
         [GridAction]
         public ActionResult _AjaxBinding()
         {
-            var historyDb = _historyProvider.AllItems();
-            
-            var history = new List<HistoryModel>();
-
-            foreach (var item in historyDb)
-            {
-                var episode = _episodeProvider.GetEpisode(item.EpisodeId);
-                var series = _seriesProvider.GetSeries(item.SeriesId);
-       
-                history.Add(new HistoryModel
+            var history = _historyProvider.AllItemsWithRelationships().Select(h => new HistoryModel
                                             {
-                                                HistoryId = item.HistoryId,
-                                                SeasonNumber = episode.SeasonNumber,
-                                                EpisodeNumber = episode.EpisodeNumber,
-                                                EpisodeTitle = episode.Title,
-                                                EpisodeOverview = episode.Overview,
-                                                SeriesTitle = series.Title,
-                                                NzbTitle = item.NzbTitle,
-                                                Quality = item.Quality.ToString(),
-                                                IsProper = item.IsProper,
-                                                Date = item.Date,
-                                                Indexer = item.Indexer
+                                                HistoryId = h.HistoryId,
+                                                SeasonNumber = h.Episode.SeasonNumber,
+                                                EpisodeNumber = h.Episode.EpisodeNumber,
+                                                EpisodeTitle = h.Episode.Title,
+                                                EpisodeOverview = h.Episode.Overview,
+                                                SeriesTitle = h.SeriesTitle,
+                                                NzbTitle = h.NzbTitle,
+                                                Quality = h.Quality.ToString(),
+                                                IsProper = h.IsProper,
+                                                Date = h.Date,
+                                                Indexer = h.Indexer
                                             });
-            }
 
             return View(new GridModel(history));
         }