server/AyaNova/biz/DataListSavedFilterBiz.cs

@@ -136,6 +136,8 @@ namespace AyaNova.Biz
             List<NameIdItem> items = new List<NameIdItem>();
             if (!string.IsNullOrWhiteSpace(listKey))
             {
+                //First ensure there is a default
+
                 items = await ct.DataListSavedFilter
                                 .AsNoTracking()
                                 .Where(z => z.ListKey == listKey && (z.Public == true || z.UserId == UserId))
@@ -151,6 +153,30 @@ namespace AyaNova.Biz
         }
 
 
+        ////////////////////////////////////////////////////////////////////////////////////////////////
+        //CREATE Default if it doesn't exist already        
+        internal async Task EnsureDefaultAsync(string listKey)
+        {
+            if (!await ct.DataListSavedFilter.AnyAsync(z => z.UserId == UserId && z.ListKey == listKey && z.DefaultFilter == true))
+            {
+                if (!DataListFactory.ListKeyIsValid(listKey))
+                {
+                    throw new System.ArgumentOutOfRangeException($"ListKey '{listKey}' is not a valid DataListKey");
+                }
+
+                var dataList = DataListFactory.GetAyaDataList(listKey);
+
+                DataListSavedFilter d = new DataListSavedFilter();
+                d.ListKey = listKey;
+                d.Name = "-";
+                d.DefaultFilter = true;
+                d.Public = false;
+                d.UserId = UserId;
+                d.Filter = "{}";
+                await ct.DataListSavedFilter.AddAsync(d);
+                await ct.SaveChangesAsync();
+            }
+        }
 
 
         ////////////////////////////////////////////////////////////////////////////////////////////////