From 2264cbbe43721b688a48083031e5a86d944b48f8 Mon Sep 17 00:00:00 2001
From: Ashley Shenton <ash.shenton@dblx.co.uk>
Date: Wed, 7 May 2025 09:27:47 +0100
Subject: [PATCH 1/3] test: update whereAttachedTo builder tests to showcase
 the issue

---
 tests/Database/DatabaseEloquentBuilderTest.php | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tests/Database/DatabaseEloquentBuilderTest.php b/tests/Database/DatabaseEloquentBuilderTest.php
index 96a6beed7e20..09146044a349 100755
--- a/tests/Database/DatabaseEloquentBuilderTest.php
+++ b/tests/Database/DatabaseEloquentBuilderTest.php
@@ -1282,6 +1282,7 @@ public function testWhereAttachedTo()
     {
         $related = new EloquentBuilderTestModelFarRelatedStub;
         $related->id = 49;
+        $related->name = 'test';
 
         $builder = EloquentBuilderTestModelParentStub::whereAttachedTo($related, 'roles');
 
@@ -1292,9 +1293,11 @@ public function testWhereAttachedToCollection()
     {
         $model1 = new EloquentBuilderTestModelParentStub;
         $model1->id = 3;
+        $model1->name = 'test3';
 
         $model2 = new EloquentBuilderTestModelParentStub;
         $model2->id = 4;
+        $model2->name = 'test4';
 
         $builder = EloquentBuilderTestModelFarRelatedStub::whereAttachedTo(new Collection([$model1, $model2]), 'roles');
 

From 678b32b941d1fe6f26eb1eaa5616a81e988794ef Mon Sep 17 00:00:00 2001
From: Ashley Shenton <ash.shenton@dblx.co.uk>
Date: Wed, 7 May 2025 09:27:57 +0100
Subject: [PATCH 2/3] test: update whereAttachedTo integration tests to
 showcase the issue

---
 tests/Database/DatabaseEloquentIntegrationTest.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tests/Database/DatabaseEloquentIntegrationTest.php b/tests/Database/DatabaseEloquentIntegrationTest.php
index 1d176afa00f1..c27cbfe476b1 100644
--- a/tests/Database/DatabaseEloquentIntegrationTest.php
+++ b/tests/Database/DatabaseEloquentIntegrationTest.php
@@ -173,6 +173,7 @@ protected function createSchema()
 
             $this->schema($connection)->create('achievements', function ($table) {
                 $table->increments('id');
+                $table->integer('status')->nullable();
             });
 
             $this->schema($connection)->create('eloquent_test_achievement_eloquent_test_user', function ($table) {
@@ -1497,7 +1498,7 @@ public function testWhereAttachedTo()
         $user1 = EloquentTestUser::create(['email' => 'user1@gmail.com']);
         $user2 = EloquentTestUser::create(['email' => 'user2@gmail.com']);
         $user3 = EloquentTestUser::create(['email' => 'user3@gmail.com']);
-        $achievement1 = EloquentTestAchievement::create();
+        $achievement1 = EloquentTestAchievement::create(['status' => 3]);
         $achievement2 = EloquentTestAchievement::create();
         $achievement3 = EloquentTestAchievement::create();
 
@@ -2988,6 +2989,7 @@ class EloquentTestAchievement extends Eloquent
     public $timestamps = false;
 
     protected $table = 'achievements';
+    protected $guarded = [];
 
     public function eloquentTestUsers()
     {

From 979d59a471684045591cdf4ec8d42e06d26e1b78 Mon Sep 17 00:00:00 2001
From: Ashley Shenton <ash.shenton@dblx.co.uk>
Date: Wed, 7 May 2025 09:28:23 +0100
Subject: [PATCH 3/3] fix: pluck the key from the collection before passing to
 whereKey

---
 .../Database/Eloquent/Concerns/QueriesRelationships.php         | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php b/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
index f9f21536d1fc..b7955bd111a9 100644
--- a/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
+++ b/src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
@@ -803,7 +803,7 @@ public function whereAttachedTo($related, $relationshipName = null, $boolean = '
         $this->has(
             $relationshipName,
             boolean: $boolean,
-            callback: fn (Builder $query) => $query->whereKey($relatedCollection),
+            callback: fn (Builder $query) => $query->whereKey($relatedCollection->pluck($related->getKeyName())),
         );
 
         return $this;