wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php:1086Applies edits to a media item and creates a new attachment record.
$requestWP_REST_RequestWP_REST_Response|WP_ErrorOne hook fires while WP_REST_Attachments_Controller::edit_media_item() runs, in this order:
Filters the meta data for the new image created by editing an existing image.
public function edit_media_item( $request ) { require_once ABSPATH . 'wp-admin/includes/image.php'; $attachment_id = $request['id']; // This also confirms the attachment is an image. $image_file = wp_get_original_image_path( $attachment_id ); $image_meta = wp_get_attachment_metadata( $attachment_id ); if ( ! $image_meta || ! $image_file || ! wp_image_file_matches_image_meta( $request['src'], $image_meta, $attachment_id ) ) { return new WP_Error( 'rest_unknown_attachment', __( 'Unable to get meta information for file.' ), array( 'status' => 404 ) ); } $supported_types = array( 'image/jpeg', 'image/png', 'image/gif', 'image/webp', 'image/avif', 'image/heic' ); $mime_type = get_post_mime_type( $attachment_id ); if ( ! in_array( $mime_type, $supported_types, true ) ) { return new WP_Error( 'rest_cannot_edit_file_type', __( 'This type of file cannot be edited.' ), array( 'status' => 400 ) ); } // The `modifiers` param takes precedence over the older format. if ( isset( $request['modifiers'] ) ) { $modifiers = $request['modifiers']; } else { $modifiers = array(); if ( isset( $request['flip']['horizontal'] ) || isset( $request['flip']['vertical'] ) ) { $flip_args = array( 'vertical' => isset( $request['flip']['vertical'] ) ? (bool) $request['flip']['vertical'] : false, 'horizontal' => isset( $request['flip']['horizontal'] ) ? (bool) $request['flip']['horizontal'] : false, ); $modifiers[] = array( 'type' => 'flip', 'args' => array( 'flip' => $flip_args, ), ); } if ( ! empty( $request['rotation'] ) ) { $modifiers[] = array( 'type' => 'rotate', 'args' => array( 'angle' => $request['rotation'], ), ); } if ( isset( $request['x'], $request['y'], $request['width'], $request['height'] ) ) { $modifiers[] = array( 'type' => 'crop', 'args' => array( 'left' => $request['x'], 'top' => $request['y'], 'width' => $request['width'], 'height' => $request['height'], ), ); } if ( 0 === count( $modifiers ) ) { return new WP_Error( 'rest_image_not_edited', __( 'The image was not edited. Edit the image before applying the changes.' ), array( 'status' => 400 ) ); } }Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.