Changeset 61982

Timestamp:

03/12/2026 06:01:47 AM (38 hours ago)

Author:

adamsilverstein

Message:

REST API: Add finalize endpoint to WP_REST_Attachments_Controller.

Introduce a POST /wp/v2/media/{id}/finalize REST API endpoint that re-triggers the wp_generate_attachment_metadata filter with context 'update' after client-side media processing completes. This ensures server-side plugins (watermarking, CDN sync, custom sizes, etc.) can post-process attachments when client-side processing is active.

The endpoint reuses edit_media_item_permissions_check for authorization and is only registered when wp_is_client_side_media_processing_enabled() returns true.

See ​https://github.com/WordPress/gutenberg/pull/74913.
See ​https://github.com/WordPress/gutenberg/issues/74358.

Props adamsilverstein, westonruter, mukesh27, divyeshpatel01.
Fixes #64804.

Location:

trunk

Files:

• src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php (modified) (2 diffs)
• tests/phpunit/tests/rest-api/rest-attachments-controller.php (modified) (1 diff)
• tests/phpunit/tests/rest-api/rest-schema-setup.php (modified) (1 diff)
• tests/qunit/fixtures/wp-api-generated.js (modified) (1 diff)

trunk/src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php

@@ -97 +97 @@
                                 'default'     => true,
                                 'description' => __( 'Whether to convert image formats.' ),
+                            ),
+                        ),
+                    ),
+                    'allow_batch' => $this->allow_batch,
+                    'schema'      => array( $this, 'get_public_item_schema' ),
+                )
+            );
+
+            register_rest_route(
+                $this->namespace,
+                '/' . $this->rest_base . '/(?P<id>[\d]+)/finalize',
+                array(
+                    array(
+                        'methods'             => WP_REST_Server::CREATABLE,
+                        'callback'            => array( $this, 'finalize_item' ),
+                        'permission_callback' => array( $this, 'edit_media_item_permissions_check' ),
+                        'args'                => array(
+                            'id' => array(
+                                'description' => __( 'Unique identifier for the attachment.' ),
+                                'type'        => 'integer',
                             ),
                         ),
@@ -2192 +2212 @@
         return $filename;
     }
+
+    /**
+     * Finalizes an attachment after client-side media processing.
+     *
+     * Triggers the 'wp_generate_attachment_metadata' filter so that
+     * server-side plugins can process the attachment after all client-side
+     * operations (upload, thumbnail generation, sideloads) are complete.
+     *
+     * @since 7.0.0
+     *
+     * @param WP_REST_Request $request Full details about the request.
+     * @return WP_REST_Response|WP_Error Response object on success, WP_Error object on failure.
+     */
+    public function finalize_item( WP_REST_Request $request ) {
+        $attachment_id = $request['id'];
+
+        $post = $this->get_post( $attachment_id );
+        if ( is_wp_error( $post ) ) {
+            return $post;
+        }
+
+        $metadata = wp_get_attachment_metadata( $attachment_id );
+        if ( ! is_array( $metadata ) ) {
+            $metadata = array();
+        }
+
+        /** This filter is documented in wp-admin/includes/image.php */
+        $metadata = apply_filters( 'wp_generate_attachment_metadata', $metadata, $attachment_id, 'update' );
+
+        wp_update_attachment_metadata( $attachment_id, $metadata );
+
+        $response_request = new WP_REST_Request(
+            WP_REST_Server::READABLE,
+            rest_get_route_for_post( $attachment_id )
+        );
+
+        $response_request['context'] = 'edit';
+
+        if ( isset( $request['_fields'] ) ) {
+            $response_request['_fields'] = $request['_fields'];
+        }
+
+        return $this->prepare_item_for_response( $post, $response_request );
+    }
 }

trunk/tests/phpunit/tests/rest-api/rest-attachments-controller.php

@@ -3448 +3448 @@
         $this->assertMatchesRegularExpression( '/canola-scaled-\d+\.jpg$/', $basename, 'Scaled filename should have numeric suffix when file conflicts with a different attachment.' );
     }
+
+    /**
+     * Tests that the finalize endpoint triggers wp_generate_attachment_metadata.
+     *
+     * @ticket 62243
+     * @covers WP_REST_Attachments_Controller::finalize_item
+     * @requires function imagejpeg
+     */
+    public function test_finalize_item(): void {
+        wp_set_current_user( self::$author_id );
+
+        // Create an attachment.
+        $request = new WP_REST_Request( 'POST', '/wp/v2/media' );
+        $request->set_header( 'Content-Type', 'image/jpeg' );
+        $request->set_header( 'Content-Disposition', 'attachment; filename=canola.jpg' );
+        $request->set_body( (string) file_get_contents( self::$test_file ) );
+        $response      = rest_get_server()->dispatch( $request );
+        $attachment_id = $response->get_data()['id'];
+
+        $this->assertSame( 201, $response->get_status() );
+
+        // Track whether wp_generate_attachment_metadata filter fires.
+        $filter_metadata = null;
+        $filter_id       = null;
+        $filter_context  = null;
+        add_filter(
+            'wp_generate_attachment_metadata',
+            function ( array $metadata, int $id, string $context ) use ( &$filter_metadata, &$filter_id, &$filter_context ) {
+                $filter_metadata = $metadata;
+                $filter_id       = $id;
+                $filter_context  = $context;
+                $metadata['foo'] = 'bar';
+                return $metadata;
+            },
+            10,
+            3
+        );
+
+        // Call the finalize endpoint.
+        $request  = new WP_REST_Request( 'POST', "/wp/v2/media/{$attachment_id}/finalize" );
+        $response = rest_get_server()->dispatch( $request );
+
+        $this->assertSame( 200, $response->get_status(), 'Finalize endpoint should return 200.' );
+        $this->assertIsArray( $filter_metadata );
+        $this->assertStringContainsString( 'canola', $filter_metadata['file'], 'Expected the canola image to have been had its metadata updated.' );
+        $this->assertSame( $attachment_id, $filter_id, 'Expected the post ID to be passed to the filter.' );
+        $this->assertSame( 'update', $filter_context, 'Filter context should be "update".' );
+        $resulting_metadata = wp_get_attachment_metadata( $attachment_id );
+        $this->assertIsArray( $resulting_metadata );
+        $this->assertArrayHasKey( 'foo', $resulting_metadata, 'Expected new metadata key to have been added.' );
+        $this->assertSame( 'bar', $resulting_metadata['foo'], 'Expected filtered metadata to be updated.' );
+    }
+
+    /**
+     * Tests that the finalize endpoint requires authentication.
+     *
+     * @ticket 62243
+     * @covers WP_REST_Attachments_Controller::finalize_item
+     * @requires function imagejpeg
+     */
+    public function test_finalize_item_requires_auth(): void {
+        wp_set_current_user( self::$author_id );
+
+        // Create an attachment.
+        $request = new WP_REST_Request( 'POST', '/wp/v2/media' );
+        $request->set_header( 'Content-Type', 'image/jpeg' );
+        $request->set_header( 'Content-Disposition', 'attachment; filename=canola.jpg' );
+        $request->set_body( (string) file_get_contents( self::$test_file ) );
+        $response      = rest_get_server()->dispatch( $request );
+        $attachment_id = $response->get_data()['id'];
+
+        // Try finalizing without authentication.
+        wp_set_current_user( 0 );
+
+        $request  = new WP_REST_Request( 'POST', "/wp/v2/media/{$attachment_id}/finalize" );
+        $response = rest_get_server()->dispatch( $request );
+
+        $this->assertErrorResponse( 'rest_cannot_edit_image', $response, 401 );
+    }
+
+    /**
+     * Tests that the finalize endpoint returns error for invalid attachment ID.
+     *
+     * @ticket 62243
+     * @covers WP_REST_Attachments_Controller::finalize_item
+     */
+    public function test_finalize_item_invalid_id(): void {
+        wp_set_current_user( self::$author_id );
+
+        $invalid_id = PHP_INT_MAX;
+        $this->assertNull( get_post( $invalid_id ), 'Expected invalid ID to not exist for an existing post.' );
+        $request  = new WP_REST_Request( 'POST', "/wp/v2/media/$invalid_id/finalize" );
+        $response = rest_get_server()->dispatch( $request );
+
+        $this->assertErrorResponse( 'rest_post_invalid_id', $response, 404 );
+    }
 }

trunk/tests/phpunit/tests/rest-api/rest-schema-setup.php

@@ -114 +114 @@
             '/wp/v2/media/(?P<id>[\\d]+)/edit',
             '/wp/v2/media/(?P<id>[\\d]+)/sideload',
+            '/wp/v2/media/(?P<id>[\\d]+)/finalize',
             '/wp/v2/blocks',
             '/wp/v2/blocks/(?P<id>[\d]+)',

trunk/tests/qunit/fixtures/wp-api-generated.js

@@ -3720 +3720 @@
             ]
         },
+        "/wp/v2/media/(?P<id>[\\d]+)/finalize": {
+            "namespace": "wp/v2",
+            "methods": [
+                "POST"
+            ],
+            "endpoints": [
+                {
+                    "methods": [
+                        "POST"
+                    ],
+                    "args": {
+                        "id": {
+                            "description": "Unique identifier for the attachment.",
+                            "type": "integer",
+                            "required": false
+                        }
+                    }
+                }
+            ]
+        },
         "/wp/v2/menu-items": {
             "namespace": "wp/v2",