rework storage of PresentationUniqueKey

1 files changed, 9 insertions, 2 deletions

diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index 8d00f38be..1d623c3ac 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -1194,10 +1194,17 @@ namespace MediaBrowser.Controller.Entities
             get { return null; }
         }
 
+        public virtual string CreatePresentationUniqueKey()
+        {
+            return Id.ToString("N");
+        }
+
         [IgnoreDataMember]
-        public virtual string PresentationUniqueKey
+        public string PresentationUniqueKey { get; set; }
+
+        public string GetPresentationUniqueKey()
         {
-            get { return Id.ToString("N"); }
+            return PresentationUniqueKey ?? CreatePresentationUniqueKey();
         }
 
         public virtual bool RequiresRefresh()