From de9f641f3dd474456267f912550586e21c5bc603 Mon Sep 17 00:00:00 2001
From: Vincent Langlet <vincentlanglet@hotmail.fr>
Date: Mon, 9 Mar 2026 21:14:20 +0100
Subject: [PATCH 1/2] fix(filter): Do not nest array

---
 src/Doctrine/Common/Filter/OpenApiFilterTrait.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/Doctrine/Common/Filter/OpenApiFilterTrait.php b/src/Doctrine/Common/Filter/OpenApiFilterTrait.php
index 2ff8b608e19..87ba6ef5d32 100644
--- a/src/Doctrine/Common/Filter/OpenApiFilterTrait.php
+++ b/src/Doctrine/Common/Filter/OpenApiFilterTrait.php
@@ -28,7 +28,11 @@ public function getOpenApiParameters(Parameter $parameter): OpenApiParameter|arr
             return new OpenApiParameter(name: $parameter->getKey(), in: 'query');
         }
 
-        $arraySchema = ['type' => 'array', 'items' => $schema ?? ['type' => 'string']];
+        if ('array' === ($schema['type'] ?? null)) {
+            $arraySchema = $schema;
+        } else {
+            $arraySchema = ['type' => 'array', 'items' => $schema ?? ['type' => 'string']];
+        }
 
         return new OpenApiParameter(name: $parameter->getKey().'[]', in: 'query', style: 'deepObject', explode: true, schema: $arraySchema);
     }

From 64eb25aeb3ddf3c5b741e056f8095ecab6913ac8 Mon Sep 17 00:00:00 2001
From: Vincent Langlet <vincentlanglet@hotmail.fr>
Date: Mon, 9 Mar 2026 22:06:39 +0100
Subject: [PATCH 2/2] Add test

---
 .../TestBundle/Entity/ProductWithQueryParameter.php       | 5 +++++
 tests/Functional/Parameters/DoctrineTest.php              | 8 ++++++++
 2 files changed, 13 insertions(+)

diff --git a/tests/Fixtures/TestBundle/Entity/ProductWithQueryParameter.php b/tests/Fixtures/TestBundle/Entity/ProductWithQueryParameter.php
index cd0c9fdc52c..f3eee943714 100644
--- a/tests/Fixtures/TestBundle/Entity/ProductWithQueryParameter.php
+++ b/tests/Fixtures/TestBundle/Entity/ProductWithQueryParameter.php
@@ -61,6 +61,11 @@
                     property: 'tags',
                     schema: ['anyOf' => [['type' => 'array', 'items' => ['type' => 'string']], ['type' => 'string']]]
                 ),
+                'listOfTags' => new QueryParameter(
+                    filter: new ExactFilter(),
+                    property: 'tags',
+                    schema: ['type' => 'array', 'items' => ['type' => 'string']],
+                ),
             ]
         ),
     ]
diff --git a/tests/Functional/Parameters/DoctrineTest.php b/tests/Functional/Parameters/DoctrineTest.php
index 56b4bdbb1e0..8fe301f5237 100644
--- a/tests/Functional/Parameters/DoctrineTest.php
+++ b/tests/Functional/Parameters/DoctrineTest.php
@@ -430,6 +430,14 @@ public static function openApiParameterDocumentationProvider(): array
                 'expectedDescription' => '',
                 'expectedSchema' => ['type' => 'array', 'items' => ['anyOf' => [['type' => 'array', 'items' => ['type' => 'string']], ['type' => 'string']]]],
             ],
+            'with schema and default castToArray should not wrap schema in array type if already an array' => [
+                'parameterName' => 'listOfTags',
+                'shouldHaveArrayNotation' => true,
+                'expectedStyle' => 'deepObject',
+                'expectedExplode' => true,
+                'expectedDescription' => '',
+                'expectedSchema' => ['type' => 'array', 'items' => ['type' => 'string']],
+            ],
         ];
     }
 }