Allow decorating filter cookie name

Author: programcsharp

Griddly.Mvc/GriddlyContext.cs

@@ -5,13 +5,29 @@ namespace Griddly.Mvc
 {
     public class GriddlyContext
     {
-        public string Name { get; set; }
+        string _name;
+        string _cookieName;
+
+        public string Name
+        {
+            get => _name;
+            set
+            {
+                _name = value;
+
+                _cookieName = "gf_" + Name;
+
+                if (GriddlySettings.DecorateCookieName != null)
+                    _cookieName = GriddlySettings.DecorateCookieName(_cookieName);
+            }
+        }
+
         public bool IsDefaultSkipped { get; set; }
         public bool IsDeepLink { get; set; }
 
         public GriddlyFilterCookieData CookieData { get; set; }
 
-        public string CookieName => "gf_" + Name;
+        public string CookieName => _cookieName;
 
         public Dictionary<string, object> Defaults { get; set; } = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
         public Dictionary<string, object> Parameters { get; set; } = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);

Griddly.Mvc/GriddlyParameterAttribute.cs

@@ -230,6 +230,7 @@ public static void AddCookieDataIfNeeded(GriddlyContext context, HttpContext htt
                 if (context.SortFields?.Length > 0)
                     data.SortFields = context.SortFields;
 
+                cookie.Name = context.CookieName; // cookie name could be different than the default
                 cookie.Value = JsonConvert.SerializeObject(data);
 
 #if NETFRAMEWORK

Griddly.Mvc/GriddlySettings.cs

@@ -53,6 +53,7 @@ public abstract class GriddlySettings : IGriddlyFilterSettings
         public static bool ExportCurrencySymbol = true;
         public static bool DisableHistoryParameters = false;
 
+        public static Func<string, string> DecorateCookieName = null;
         public static Func<GriddlyButton, object> IconTemplate = null;
         public static Func<GriddlyResultPage, object> DefaultFooterTemplate = null;
         public static Func<GriddlyResultPage, object> DefaultHeaderTemplate = null;