From fac6205e957c9fbe0145606bc82a32973db1a339 Mon Sep 17 00:00:00 2001
From: Benedikt Franke <benedikt@franke.tech>
Date: Thu, 17 Oct 2024 15:03:37 +0200
Subject: [PATCH] Serialize `BackedEnum` instances by name, not value

---
 CHANGELOG.md                             | 6 ++++++
 src/Type/Definition/EnumType.php         | 2 +-
 tests/Type/PhpEnumType/BackedPhpEnum.php | 4 ++--
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 738b5746e..5f021dde0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,12 @@ You can find and compare releases at the [GitHub release page](https://github.co
 
 ## Unreleased
 
+## v15.14.3
+
+### Fixed
+
+- Serialize `BackedEnum` instances by name, not value https://github.com/webonyx/graphql-php/pull/1618
+
 ## v15.14.2
 
 ### Changed
diff --git a/src/Type/Definition/EnumType.php b/src/Type/Definition/EnumType.php
index 087788728..f094147df 100644
--- a/src/Type/Definition/EnumType.php
+++ b/src/Type/Definition/EnumType.php
@@ -137,7 +137,7 @@ public function serialize($value)
         }
 
         if (is_a($value, \BackedEnum::class)) {
-            return $value->value;
+            return $value->name;
         }
 
         if (is_a($value, \UnitEnum::class)) {
diff --git a/tests/Type/PhpEnumType/BackedPhpEnum.php b/tests/Type/PhpEnumType/BackedPhpEnum.php
index 3a6293c8a..958f506ef 100644
--- a/tests/Type/PhpEnumType/BackedPhpEnum.php
+++ b/tests/Type/PhpEnumType/BackedPhpEnum.php
@@ -4,7 +4,7 @@
 
 enum BackedPhpEnum: string
 {
-    case A = 'A';
+    case A = 'a';
     case B = 'B';
-    case C = 'C';
+    case C = 'the value does not really matter';
 }