From ec9fa3aea733fbf25bd139769aea412552ee77fb Mon Sep 17 00:00:00 2001
From: Giovanni Sanchez <108043524+sisyphusSmiling@users.noreply.github.com>
Date: Tue, 22 Oct 2024 17:58:01 -0600
Subject: [PATCH] update displayType trait serialization

---
 cadence/contracts/utils/SerializeMetadata.cdc | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/cadence/contracts/utils/SerializeMetadata.cdc b/cadence/contracts/utils/SerializeMetadata.cdc
index 3f3911df..f2013ea0 100644
--- a/cadence/contracts/utils/SerializeMetadata.cdc
+++ b/cadence/contracts/utils/SerializeMetadata.cdc
@@ -129,10 +129,13 @@ access(all) contract SerializeMetadata {
                 continue
             }
             serializedResult = serializedResult.concat("{")
-            .concat("\"trait_type\": ").concat(Serialize.tryToJSONString(trait.name)!)
-            .concat(", \"display_type\": ").concat(Serialize.tryToJSONString(trait.displayType)!)
-            .concat(", \"value\": ").concat(value!)
-            .concat("}")
+                .concat("\"trait_type\": ").concat(Serialize.tryToJSONString(trait.name)!)
+            if trait.displayType != nil {
+                serializedResult = serializedResult.concat(", \"display_type\": ")
+                    .concat(Serialize.tryToJSONString(trait.displayType)!)
+            }
+            serializedResult = serializedResult.concat(", \"value\": ").concat(value!)
+                .concat("}")
             if i < traits!.traits.length - 1 {
                 serializedResult = serializedResult.concat(",")
             }