[#5741] use random string as id for non-system collections and fields

apis/collection.go

@@ -182,9 +182,15 @@ func collectionTruncate(e *core.RequestEvent) error {
 }
 
 func collectionScaffolds(e *core.RequestEvent) error {
-	return e.JSON(http.StatusOK, map[string]*core.Collection{
+	collections := map[string]*core.Collection{
 		core.CollectionTypeBase: core.NewBaseCollection(""),
 		core.CollectionTypeAuth: core.NewAuthCollection(""),
 		core.CollectionTypeView: core.NewViewCollection(""),
-	})
+	}
+
+	for _, c := range collections {
+		c.Id = "" // clear autogenerated id
+	}
+
+	return e.JSON(http.StatusOK, collections)
 }