laravel
diff --git a/‎src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
+1-1 b/‎src/Illuminate/Database/Eloquent/Concerns/QueriesRelationships.php
+1-1
diff --git a/‎tests/Database/DatabaseEloquentBuilderTest.php
+3 b/‎tests/Database/DatabaseEloquentBuilderTest.php
+3
diff --git a/‎tests/Database/DatabaseEloquentIntegrationTest.php
+3-1 b/‎tests/Database/DatabaseEloquentIntegrationTest.php
+3-1
@@ -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;
 
@@ -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');
 
 
@@ -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()
     {
Original file line number	Diff line number	Diff line change
`@@ -1282,6 +1282,7 @@ public function testWhereAttachedTo()`
`1282`	`1282`	`{`
`1283`	`1283`	`$related = new EloquentBuilderTestModelFarRelatedStub;`
`1284`	`1284`	`$related->id = 49;`
	`1285`	`+ $related->name = 'test';`
`1285`	`1286`
`1286`	`1287`	`$builder = EloquentBuilderTestModelParentStub::whereAttachedTo($related, 'roles');`
`1287`	`1288`
`@@ -1292,9 +1293,11 @@ public function testWhereAttachedToCollection()`
`1292`	`1293`	`{`
`1293`	`1294`	`$model1 = new EloquentBuilderTestModelParentStub;`
`1294`	`1295`	`$model1->id = 3;`
	`1296`	`+ $model1->name = 'test3';`
`1295`	`1297`
`1296`	`1298`	`$model2 = new EloquentBuilderTestModelParentStub;`
`1297`	`1299`	`$model2->id = 4;`
	`1300`	`+ $model2->name = 'test4';`
`1298`	`1301`
`1299`	`1302`	`$builder = EloquentBuilderTestModelFarRelatedStub::whereAttachedTo(new Collection([$model1, $model2]), 'roles');`
`1300`	`1303`