catalog index

src/isnd/Data/Catalog/CatalogIndex.cs

@@ -14,7 +14,7 @@ namespace isnd.Data.Catalog
 
 
         [JsonProperty("count")]
-        public int Count { get => Items.Count; }
+        public int Count { get => Items?.Count ?? 0; }
         public string CommitId { get; set; }
         public DateTime CommitTimeStamp { get; set; }
         

src/isnd/Data/PackageVersion.cs

@@ -32,13 +32,13 @@ namespace isnd.Data
         public virtual Package Package { get; set; }
 
         [Required][JsonIgnore]
+        [ForeignKey("LatestCommit")]
         public long CommitNId { get; set ; }
 
         [NotMapped]
 
         public string CommitId { get => CommitNId.ToString(); }
 
-        [ForeignKey("CommitNId")]
 
         public virtual Commit LatestCommit{ get; set; }
         public string NugetLink => $"/package/{PackageId}/{FullString}/{PackageId}-{FullString}.nupkg";