From e199f1eb01ed8e25e0864f77580e75f19412d6c5 Mon Sep 17 00:00:00 2001
From: "Carlos R. L. Rodrigues"
 <37986729+carlos-r-l-rodrigues@users.noreply.github.com>
Date: Sat, 13 Dec 2025 17:35:07 -0300
Subject: [PATCH] fix(index): detect enum field (#14298)
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## Summary

**What** — What changes are introduced in this PR?

Fixes Enum fields detection on Index module
---
 .changeset/fruity-shoes-lie.md                   | 5 +++++
 packages/modules/index/src/utils/build-config.ts | 9 +++++++--
 2 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 .changeset/fruity-shoes-lie.md

diff --git a/.changeset/fruity-shoes-lie.md b/.changeset/fruity-shoes-lie.md
new file mode 100644
index 0000000000..b6760dad98
--- /dev/null
+++ b/.changeset/fruity-shoes-lie.md
@@ -0,0 +1,5 @@
+---
+"@medusajs/index": patch
+---
+
+fix(index): detect enum fields
diff --git a/packages/modules/index/src/utils/build-config.ts b/packages/modules/index/src/utils/build-config.ts
index c7e1b599e1..4c3dae4db2 100644
--- a/packages/modules/index/src/utils/build-config.ts
+++ b/packages/modules/index/src/utils/build-config.ts
@@ -845,7 +845,9 @@ function processEntity(
           ]
           intermediateEntityObjectRepresentationRef.moduleConfig =
             intermediateEntityModule
-          if (!intermediateEntityObjectRepresentationRef.fields.includes("id")) {
+          if (
+            !intermediateEntityObjectRepresentationRef.fields.includes("id")
+          ) {
             intermediateEntityObjectRepresentationRef.fields.push("id")
           }
 
@@ -1185,7 +1187,10 @@ function buildSchemaFromFilterableLinks(
     const fieldType = fieldRef.type.toString()
     const isArray = fieldType.startsWith("[")
     let currentType = fieldType.replace(/\[|\]|\!/g, "")
-    const isEnum = currentType.endsWith("Enum")
+    const isEnum =
+      fieldRef.type?.ofType?.astNode?.kind ===
+      GraphQLUtils.Kind.ENUM_TYPE_DEFINITION
+
     if (isEnum) {
       currentType = "String"
     }