WP_REST_Attachments_Controller{} │ WP 4.7.0
Core controller used to access attachments via the REST API.
Hooks from the class
Usage
$WP_REST_Attachments_Controller = new WP_REST_Attachments_Controller(); // use class methods
Methods
- protected check_upload_size( $file )
- public create_item( $request )
- public create_item_permissions_check( $request )
- public edit_media_item( $request )
- public edit_media_item_permissions_check( $request )
- public get_collection_params()
- protected get_edit_media_item_args()
- public static get_filename_from_disposition( $disposition_header )
- public get_item_schema()
- protected get_media_types()
- protected handle_featured_media( $featured_media, $post_id )
- protected insert_attachment( $request )
- public post_process_item( $request )
- public post_process_item_permissions_check( $request )
- protected prepare_item_for_database( $request )
- public prepare_item_for_response( $item, $request )
- protected prepare_items_query( $prepared_args = array(), $request = null )
- public register_routes()
- public update_item( $request )
- protected upload_from_data( $data, $headers )
- protected upload_from_file( $files, $headers )
Notes
Changelog
| Since 4.7.0 | Introduced. |
WP_REST_Attachments_Controller{} WP REST Attachments Controller{} code WP 6.5.2
class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
/**
* Whether the controller supports batching.
*
* @since 5.9.0
* @var false
*/
protected $allow_batch = false;
/**
* Registers the routes for attachments.
*
* @since 5.3.0
*
* @see register_rest_route()
*/
public function register_routes() {
parent::register_routes();
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<id>[\d]+)/post-process',
array(
'methods' => WP_REST_Server::CREATABLE,
'callback' => array( $this, 'post_process_item' ),
'permission_callback' => array( $this, 'post_process_item_permissions_check' ),
'args' => array(
'id' => array(
'description' => __( 'Unique identifier for the attachment.' ),
'type' => 'integer',
),
'action' => array(
'type' => 'string',
'enum' => array( 'create-image-subsizes' ),
'required' => true,
),
),
)
);
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<id>[\d]+)/edit',
array(
'methods' => WP_REST_Server::CREATABLE,
'callback' => array( $this, 'edit_media_item' ),
'permission_callback' => array( $this, 'edit_media_item_permissions_check' ),
'args' => $this->get_edit_media_item_args(),
)
);
}
/**
* Determines the allowed query_vars for a get_items() response and
* prepares for WP_Query.
*
* @since 4.7.0
*
* @param array $prepared_args Optional. Array of prepared arguments. Default empty array.
* @param WP_REST_Request $request Optional. Request to prepare items for.
* @return array Array of query arguments.
*/
protected function prepare_items_query( $prepared_args = array(), $request = null ) {
$query_args = parent::prepare_items_query( $prepared_args, $request );
if ( empty( $query_args['post_status'] ) ) {
$query_args['post_status'] = 'inherit';
}
$media_types = $this->get_media_types();
if ( ! empty( $request['media_type'] ) && isset( $media_types[ $request['media_type'] ] ) ) {
$query_args['post_mime_type'] = $media_types[ $request['media_type'] ];
}
if ( ! empty( $request['mime_type'] ) ) {
$parts = explode( '/', $request['mime_type'] );
if ( isset( $media_types[ $parts[0] ] ) && in_array( $request['mime_type'], $media_types[ $parts[0] ], true ) ) {
$query_args['post_mime_type'] = $request['mime_type'];
}
}
// Filter query clauses to include filenames.
if ( isset( $query_args['s'] ) ) {
add_filter( 'wp_allow_query_attachment_by_filename', '__return_true' );
}
return $query_args;
}
/**
* Checks if a given request has access to create an attachment.
*
* @since 4.7.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error Boolean true if the attachment may be created, or a WP_Error if not.
*/
public function create_item_permissions_check( $request ) {
$ret = parent::create_item_permissions_check( $request );
if ( ! $ret || is_wp_error( $ret ) ) {
return $ret;
}
if ( ! current_user_can( 'upload_files' ) ) {
return new WP_Error(
'rest_cannot_create',
__( 'Sorry, you are not allowed to upload media on this site.' ),
array( 'status' => 400 )
);
}
// Attaching media to a post requires ability to edit said post.
if ( ! empty( $request['post'] ) && ! current_user_can( 'edit_post', (int) $request['post'] ) ) {
return new WP_Error(
'rest_cannot_edit',
__( 'Sorry, you are not allowed to upload media to this post.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Creates a single attachment.
*
* @since 4.7.0
*
* @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 create_item( $request ) {
if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
return new WP_Error(
'rest_invalid_param',
__( 'Invalid parent type.' ),
array( 'status' => 400 )
);
}
$insert = $this->insert_attachment( $request );
if ( is_wp_error( $insert ) ) {
return $insert;
}
$schema = $this->get_item_schema();
// Extract by name.
$attachment_id = $insert['attachment_id'];
$file = $insert['file'];
if ( isset( $request['alt_text'] ) ) {
update_post_meta( $attachment_id, '_wp_attachment_image_alt', sanitize_text_field( $request['alt_text'] ) );
}
if ( ! empty( $schema['properties']['featured_media'] ) && isset( $request['featured_media'] ) ) {
$thumbnail_update = $this->handle_featured_media( $request['featured_media'], $attachment_id );
if ( is_wp_error( $thumbnail_update ) ) {
return $thumbnail_update;
}
}
if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) {
$meta_update = $this->meta->update_value( $request['meta'], $attachment_id );
if ( is_wp_error( $meta_update ) ) {
return $meta_update;
}
}
$attachment = get_post( $attachment_id );
$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
if ( is_wp_error( $fields_update ) ) {
return $fields_update;
}
$terms_update = $this->handle_terms( $attachment_id, $request );
if ( is_wp_error( $terms_update ) ) {
return $terms_update;
}
$request->set_param( 'context', 'edit' );
/**
* Fires after a single attachment is completely created or updated via the REST API.
*
* @since 5.0.0
*
* @param WP_Post $attachment Inserted or updated attachment object.
* @param WP_REST_Request $request Request object.
* @param bool $creating True when creating an attachment, false when updating.
*/
do_action( 'rest_after_insert_attachment', $attachment, $request, true );
wp_after_insert_post( $attachment, false, null );
if ( wp_is_serving_rest_request() ) {
/*
* Set a custom header with the attachment_id.
* Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.
*/
header( 'X-WP-Upload-Attachment-ID: ' . $attachment_id );
}
// Include media and image functions to get access to wp_generate_attachment_metadata().
require_once ABSPATH . 'wp-admin/includes/media.php';
require_once ABSPATH . 'wp-admin/includes/image.php';
/*
* Post-process the upload (create image sub-sizes, make PDF thumbnails, etc.) and insert attachment meta.
* At this point the server may run out of resources and post-processing of uploaded images may fail.
*/
wp_update_attachment_metadata( $attachment_id, wp_generate_attachment_metadata( $attachment_id, $file ) );
$response = $this->prepare_item_for_response( $attachment, $request );
$response = rest_ensure_response( $response );
$response->set_status( 201 );
$response->header( 'Location', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->rest_base, $attachment_id ) ) );
return $response;
}
/**
* Inserts the attachment post in the database. Does not update the attachment meta.
*
* @since 5.3.0
*
* @param WP_REST_Request $request
* @return array|WP_Error
*/
protected function insert_attachment( $request ) {
// Get the file via $_FILES or raw data.
$files = $request->get_file_params();
$headers = $request->get_headers();
if ( ! empty( $files ) ) {
$file = $this->upload_from_file( $files, $headers );
} else {
$file = $this->upload_from_data( $request->get_body(), $headers );
}
if ( is_wp_error( $file ) ) {
return $file;
}
$name = wp_basename( $file['file'] );
$name_parts = pathinfo( $name );
$name = trim( substr( $name, 0, -( 1 + strlen( $name_parts['extension'] ) ) ) );
$url = $file['url'];
$type = $file['type'];
$file = $file['file'];
// Include image functions to get access to wp_read_image_metadata().
require_once ABSPATH . 'wp-admin/includes/image.php';
// Use image exif/iptc data for title and caption defaults if possible.
$image_meta = wp_read_image_metadata( $file );
if ( ! empty( $image_meta ) ) {
if ( empty( $request['title'] ) && trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
$request['title'] = $image_meta['title'];
}
if ( empty( $request['caption'] ) && trim( $image_meta['caption'] ) ) {
$request['caption'] = $image_meta['caption'];
}
}
$attachment = $this->prepare_item_for_database( $request );
$attachment->post_mime_type = $type;
$attachment->guid = $url;
if ( empty( $attachment->post_title ) ) {
$attachment->post_title = preg_replace( '/\.[^.]+$/', '', wp_basename( $file ) );
}
// $post_parent is inherited from $attachment['post_parent'].
$id = wp_insert_attachment( wp_slash( (array) $attachment ), $file, 0, true, false );
if ( is_wp_error( $id ) ) {
if ( 'db_update_error' === $id->get_error_code() ) {
$id->add_data( array( 'status' => 500 ) );
} else {
$id->add_data( array( 'status' => 400 ) );
}
return $id;
}
$attachment = get_post( $id );
/**
* Fires after a single attachment is created or updated via the REST API.
*
* @since 4.7.0
*
* @param WP_Post $attachment Inserted or updated attachment
* object.
* @param WP_REST_Request $request The request sent to the API.
* @param bool $creating True when creating an attachment, false when updating.
*/
do_action( 'rest_insert_attachment', $attachment, $request, true );
return array(
'attachment_id' => $id,
'file' => $file,
);
}
/**
* Determines the featured media based on a request param.
*
* @since 6.5.0
*
* @param int $featured_media Featured Media ID.
* @param int $post_id Post ID.
* @return bool|WP_Error Whether the post thumbnail was successfully deleted, otherwise WP_Error.
*/
protected function handle_featured_media( $featured_media, $post_id ) {
$post_type = get_post_type( $post_id );
$thumbnail_support = current_theme_supports( 'post-thumbnails', $post_type ) && post_type_supports( $post_type, 'thumbnail' );
// Similar check as in wp_insert_post().
if ( ! $thumbnail_support && get_post_mime_type( $post_id ) ) {
if ( wp_attachment_is( 'audio', $post_id ) ) {
$thumbnail_support = post_type_supports( 'attachment:audio', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:audio' );
} elseif ( wp_attachment_is( 'video', $post_id ) ) {
$thumbnail_support = post_type_supports( 'attachment:video', 'thumbnail' ) || current_theme_supports( 'post-thumbnails', 'attachment:video' );
}
}
if ( $thumbnail_support ) {
return parent::handle_featured_media( $featured_media, $post_id );
}
return new WP_Error(
'rest_no_featured_media',
sprintf(
/* translators: %s: attachment mime type */
__( 'This site does not support post thumbnails on attachments with MIME type %s.' ),
get_post_mime_type( $post_id )
),
array( 'status' => 400 )
);
}
/**
* Updates a single attachment.
*
* @since 4.7.0
*
* @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 update_item( $request ) {
if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
return new WP_Error(
'rest_invalid_param',
__( 'Invalid parent type.' ),
array( 'status' => 400 )
);
}
$attachment_before = get_post( $request['id'] );
$response = parent::update_item( $request );
if ( is_wp_error( $response ) ) {
return $response;
}
$response = rest_ensure_response( $response );
$data = $response->get_data();
if ( isset( $request['alt_text'] ) ) {
update_post_meta( $data['id'], '_wp_attachment_image_alt', $request['alt_text'] );
}
$attachment = get_post( $request['id'] );
if ( ! empty( $schema['properties']['featured_media'] ) && isset( $request['featured_media'] ) ) {
$thumbnail_update = $this->handle_featured_media( $request['featured_media'], $attachment->ID );
if ( is_wp_error( $thumbnail_update ) ) {
return $thumbnail_update;
}
}
$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
if ( is_wp_error( $fields_update ) ) {
return $fields_update;
}
$request->set_param( 'context', 'edit' );
/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php */
do_action( 'rest_after_insert_attachment', $attachment, $request, false );
wp_after_insert_post( $attachment, true, $attachment_before );
$response = $this->prepare_item_for_response( $attachment, $request );
$response = rest_ensure_response( $response );
return $response;
}
/**
* Performs post processing on an attachment.
*
* @since 5.3.0
*
* @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 post_process_item( $request ) {
switch ( $request['action'] ) {
case 'create-image-subsizes':
require_once ABSPATH . 'wp-admin/includes/image.php';
wp_update_image_subsizes( $request['id'] );
break;
}
$request['context'] = 'edit';
return $this->prepare_item_for_response( get_post( $request['id'] ), $request );
}
/**
* Checks if a given request can perform post processing on an attachment.
*
* @since 5.3.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has access to update the item, WP_Error object otherwise.
*/
public function post_process_item_permissions_check( $request ) {
return $this->update_item_permissions_check( $request );
}
/**
* Checks if a given request has access to editing media.
*
* @since 5.5.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function edit_media_item_permissions_check( $request ) {
if ( ! current_user_can( 'upload_files' ) ) {
return new WP_Error(
'rest_cannot_edit_image',
__( 'Sorry, you are not allowed to upload media on this site.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return $this->update_item_permissions_check( $request );
}
/**
* Applies edits to a media item and creates a new attachment record.
*
* @since 5.5.0
*
* @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 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' );
$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 ( ! 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 )
);
}
}
/*
* If the file doesn't exist, attempt a URL fopen on the src link.
* This can occur with certain file replication plugins.
* Keep the original file path to get a modified name later.
*/
$image_file_to_edit = $image_file;
if ( ! file_exists( $image_file_to_edit ) ) {
$image_file_to_edit = _load_image_to_edit_path( $attachment_id );
}
$image_editor = wp_get_image_editor( $image_file_to_edit );
if ( is_wp_error( $image_editor ) ) {
return new WP_Error(
'rest_unknown_image_file_type',
__( 'Unable to edit this image.' ),
array( 'status' => 500 )
);
}
foreach ( $modifiers as $modifier ) {
$args = $modifier['args'];
switch ( $modifier['type'] ) {
case 'rotate':
// Rotation direction: clockwise vs. counter clockwise.
$rotate = 0 - $args['angle'];
if ( 0 !== $rotate ) {
$result = $image_editor->rotate( $rotate );
if ( is_wp_error( $result ) ) {
return new WP_Error(
'rest_image_rotation_failed',
__( 'Unable to rotate this image.' ),
array( 'status' => 500 )
);
}
}
break;
case 'crop':
$size = $image_editor->get_size();
$crop_x = round( ( $size['width'] * $args['left'] ) / 100.0 );
$crop_y = round( ( $size['height'] * $args['top'] ) / 100.0 );
$width = round( ( $size['width'] * $args['width'] ) / 100.0 );
$height = round( ( $size['height'] * $args['height'] ) / 100.0 );
if ( $size['width'] !== $width && $size['height'] !== $height ) {
$result = $image_editor->crop( $crop_x, $crop_y, $width, $height );
if ( is_wp_error( $result ) ) {
return new WP_Error(
'rest_image_crop_failed',
__( 'Unable to crop this image.' ),
array( 'status' => 500 )
);
}
}
break;
}
}
// Calculate the file name.
$image_ext = pathinfo( $image_file, PATHINFO_EXTENSION );
$image_name = wp_basename( $image_file, ".{$image_ext}" );
/*
* Do not append multiple `-edited` to the file name.
* The user may be editing a previously edited image.
*/
if ( preg_match( '/-edited(-\d+)?$/', $image_name ) ) {
// Remove any `-1`, `-2`, etc. `wp_unique_filename()` will add the proper number.
$image_name = preg_replace( '/-edited(-\d+)?$/', '-edited', $image_name );
} else {
// Append `-edited` before the extension.
$image_name .= '-edited';
}
$filename = "{$image_name}.{$image_ext}";
// Create the uploads sub-directory if needed.
$uploads = wp_upload_dir();
// Make the file name unique in the (new) upload directory.
$filename = wp_unique_filename( $uploads['path'], $filename );
// Save to disk.
$saved = $image_editor->save( $uploads['path'] . "/$filename" );
if ( is_wp_error( $saved ) ) {
return $saved;
}
// Create new attachment post.
$new_attachment_post = array(
'post_mime_type' => $saved['mime-type'],
'guid' => $uploads['url'] . "/$filename",
'post_title' => $image_name,
'post_content' => '',
);
// Copy post_content, post_excerpt, and post_title from the edited image's attachment post.
$attachment_post = get_post( $attachment_id );
if ( $attachment_post ) {
$new_attachment_post['post_content'] = $attachment_post->post_content;
$new_attachment_post['post_excerpt'] = $attachment_post->post_excerpt;
$new_attachment_post['post_title'] = $attachment_post->post_title;
}
$new_attachment_id = wp_insert_attachment( wp_slash( $new_attachment_post ), $saved['path'], 0, true );
if ( is_wp_error( $new_attachment_id ) ) {
if ( 'db_update_error' === $new_attachment_id->get_error_code() ) {
$new_attachment_id->add_data( array( 'status' => 500 ) );
} else {
$new_attachment_id->add_data( array( 'status' => 400 ) );
}
return $new_attachment_id;
}
// Copy the image alt text from the edited image.
$image_alt = get_post_meta( $attachment_id, '_wp_attachment_image_alt', true );
if ( ! empty( $image_alt ) ) {
// update_post_meta() expects slashed.
update_post_meta( $new_attachment_id, '_wp_attachment_image_alt', wp_slash( $image_alt ) );
}
if ( wp_is_serving_rest_request() ) {
/*
* Set a custom header with the attachment_id.
* Used by the browser/client to resume creating image sub-sizes after a PHP fatal error.
*/
header( 'X-WP-Upload-Attachment-ID: ' . $new_attachment_id );
}
// Generate image sub-sizes and meta.
$new_image_meta = wp_generate_attachment_metadata( $new_attachment_id, $saved['path'] );
// Copy the EXIF metadata from the original attachment if not generated for the edited image.
if ( isset( $image_meta['image_meta'] ) && isset( $new_image_meta['image_meta'] ) && is_array( $new_image_meta['image_meta'] ) ) {
// Merge but skip empty values.
foreach ( (array) $image_meta['image_meta'] as $key => $value ) {
if ( empty( $new_image_meta['image_meta'][ $key ] ) && ! empty( $value ) ) {
$new_image_meta['image_meta'][ $key ] = $value;
}
}
}
// Reset orientation. At this point the image is edited and orientation is correct.
if ( ! empty( $new_image_meta['image_meta']['orientation'] ) ) {
$new_image_meta['image_meta']['orientation'] = 1;
}
// The attachment_id may change if the site is exported and imported.
$new_image_meta['parent_image'] = array(
'attachment_id' => $attachment_id,
// Path to the originally uploaded image file relative to the uploads directory.
'file' => _wp_relative_upload_path( $image_file ),
);
/**
* Filters the meta data for the new image created by editing an existing image.
*
* @since 5.5.0
*
* @param array $new_image_meta Meta data for the new image.
* @param int $new_attachment_id Attachment post ID for the new image.
* @param int $attachment_id Attachment post ID for the edited (parent) image.
*/
$new_image_meta = apply_filters( 'wp_edited_image_metadata', $new_image_meta, $new_attachment_id, $attachment_id );
wp_update_attachment_metadata( $new_attachment_id, $new_image_meta );
$response = $this->prepare_item_for_response( get_post( $new_attachment_id ), $request );
$response->set_status( 201 );
$response->header( 'Location', rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $new_attachment_id ) ) );
return $response;
}
/**
* Prepares a single attachment for create or update.
*
* @since 4.7.0
*
* @param WP_REST_Request $request Request object.
* @return stdClass|WP_Error Post object.
*/
protected function prepare_item_for_database( $request ) {
$prepared_attachment = parent::prepare_item_for_database( $request );
// Attachment caption (post_excerpt internally).
if ( isset( $request['caption'] ) ) {
if ( is_string( $request['caption'] ) ) {
$prepared_attachment->post_excerpt = $request['caption'];
} elseif ( isset( $request['caption']['raw'] ) ) {
$prepared_attachment->post_excerpt = $request['caption']['raw'];
}
}
// Attachment description (post_content internally).
if ( isset( $request['description'] ) ) {
if ( is_string( $request['description'] ) ) {
$prepared_attachment->post_content = $request['description'];
} elseif ( isset( $request['description']['raw'] ) ) {
$prepared_attachment->post_content = $request['description']['raw'];
}
}
if ( isset( $request['post'] ) ) {
$prepared_attachment->post_parent = (int) $request['post'];
}
return $prepared_attachment;
}
/**
* Prepares a single attachment output for response.
*
* @since 4.7.0
* @since 5.9.0 Renamed `$post` to `$item` to match parent class for PHP 8 named parameter support.
*
* @param WP_Post $item Attachment object.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $item, $request ) {
// Restores the more descriptive, specific name for use within this method.
$post = $item;
$response = parent::prepare_item_for_response( $post, $request );
$fields = $this->get_fields_for_response( $request );
$data = $response->get_data();
if ( in_array( 'description', $fields, true ) ) {
$data['description'] = array(
'raw' => $post->post_content,
/** This filter is documented in wp-includes/post-template.php */
'rendered' => apply_filters( 'the_content', $post->post_content ),
);
}
if ( in_array( 'caption', $fields, true ) ) {
/** This filter is documented in wp-includes/post-template.php */
$caption = apply_filters( 'get_the_excerpt', $post->post_excerpt, $post );
/** This filter is documented in wp-includes/post-template.php */
$caption = apply_filters( 'the_excerpt', $caption );
$data['caption'] = array(
'raw' => $post->post_excerpt,
'rendered' => $caption,
);
}
if ( in_array( 'alt_text', $fields, true ) ) {
$data['alt_text'] = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
}
if ( in_array( 'media_type', $fields, true ) ) {
$data['media_type'] = wp_attachment_is_image( $post->ID ) ? 'image' : 'file';
}
if ( in_array( 'mime_type', $fields, true ) ) {
$data['mime_type'] = $post->post_mime_type;
}
if ( in_array( 'media_details', $fields, true ) ) {
$data['media_details'] = wp_get_attachment_metadata( $post->ID );
// Ensure empty details is an empty object.
if ( empty( $data['media_details'] ) ) {
$data['media_details'] = new stdClass();
} elseif ( ! empty( $data['media_details']['sizes'] ) ) {
foreach ( $data['media_details']['sizes'] as $size => &$size_data ) {
if ( isset( $size_data['mime-type'] ) ) {
$size_data['mime_type'] = $size_data['mime-type'];
unset( $size_data['mime-type'] );
}
// Use the same method image_downsize() does.
$image_src = wp_get_attachment_image_src( $post->ID, $size );
if ( ! $image_src ) {
continue;
}
$size_data['source_url'] = $image_src[0];
}
$full_src = wp_get_attachment_image_src( $post->ID, 'full' );
if ( ! empty( $full_src ) ) {
$data['media_details']['sizes']['full'] = array(
'file' => wp_basename( $full_src[0] ),
'width' => $full_src[1],
'height' => $full_src[2],
'mime_type' => $post->post_mime_type,
'source_url' => $full_src[0],
);
}
} else {
$data['media_details']['sizes'] = new stdClass();
}
}
if ( in_array( 'post', $fields, true ) ) {
$data['post'] = ! empty( $post->post_parent ) ? (int) $post->post_parent : null;
}
if ( in_array( 'source_url', $fields, true ) ) {
$data['source_url'] = wp_get_attachment_url( $post->ID );
}
if ( in_array( 'missing_image_sizes', $fields, true ) ) {
require_once ABSPATH . 'wp-admin/includes/image.php';
$data['missing_image_sizes'] = array_keys( wp_get_missing_image_subsizes( $post->ID ) );
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->filter_response_by_context( $data, $context );
$links = $response->get_links();
// Wrap the data in a response object.
$response = rest_ensure_response( $data );
foreach ( $links as $rel => $rel_links ) {
foreach ( $rel_links as $link ) {
$response->add_link( $rel, $link['href'], $link['attributes'] );
}
}
/**
* Filters an attachment returned from the REST API.
*
* Allows modification of the attachment right before it is returned.
*
* @since 4.7.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Post $post The original attachment post.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_attachment', $response, $post, $request );
}
/**
* Retrieves the attachment's schema, conforming to JSON Schema.
*
* @since 4.7.0
*
* @return array Item schema as an array.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
$schema = parent::get_item_schema();
$schema['properties']['alt_text'] = array(
'description' => __( 'Alternative text to display when attachment is not displayed.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'arg_options' => array(
'sanitize_callback' => 'sanitize_text_field',
),
);
$schema['properties']['caption'] = array(
'description' => __( 'The attachment caption.' ),
'type' => 'object',
'context' => array( 'view', 'edit', 'embed' ),
'arg_options' => array(
'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
'validate_callback' => null, // Note: validation implemented in self::prepare_item_for_database().
),
'properties' => array(
'raw' => array(
'description' => __( 'Caption for the attachment, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'edit' ),
),
'rendered' => array(
'description' => __( 'HTML caption for the attachment, transformed for display.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
),
);
$schema['properties']['description'] = array(
'description' => __( 'The attachment description.' ),
'type' => 'object',
'context' => array( 'view', 'edit' ),
'arg_options' => array(
'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database().
'validate_callback' => null, // Note: validation implemented in self::prepare_item_for_database().
),
'properties' => array(
'raw' => array(
'description' => __( 'Description for the attachment, as it exists in the database.' ),
'type' => 'string',
'context' => array( 'edit' ),
),
'rendered' => array(
'description' => __( 'HTML description for the attachment, transformed for display.' ),
'type' => 'string',
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
),
);
$schema['properties']['media_type'] = array(
'description' => __( 'Attachment type.' ),
'type' => 'string',
'enum' => array( 'image', 'file' ),
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
);
$schema['properties']['mime_type'] = array(
'description' => __( 'The attachment MIME type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
);
$schema['properties']['media_details'] = array(
'description' => __( 'Details about the media file, specific to its type.' ),
'type' => 'object',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
);
$schema['properties']['post'] = array(
'description' => __( 'The ID for the associated post of the attachment.' ),
'type' => 'integer',
'context' => array( 'view', 'edit' ),
);
$schema['properties']['source_url'] = array(
'description' => __( 'URL to the original attachment file.' ),
'type' => 'string',
'format' => 'uri',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
);
$schema['properties']['missing_image_sizes'] = array(
'description' => __( 'List of the missing image sizes of the attachment.' ),
'type' => 'array',
'items' => array( 'type' => 'string' ),
'context' => array( 'edit' ),
'readonly' => true,
);
unset( $schema['properties']['password'] );
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Handles an upload via raw POST data.
*
* @since 4.7.0
*
* @param string $data Supplied file data.
* @param array $headers HTTP headers from the request.
* @return array|WP_Error Data from wp_handle_sideload().
*/
protected function upload_from_data( $data, $headers ) {
if ( empty( $data ) ) {
return new WP_Error(
'rest_upload_no_data',
__( 'No data supplied.' ),
array( 'status' => 400 )
);
}
if ( empty( $headers['content_type'] ) ) {
return new WP_Error(
'rest_upload_no_content_type',
__( 'No Content-Type supplied.' ),
array( 'status' => 400 )
);
}
if ( empty( $headers['content_disposition'] ) ) {
return new WP_Error(
'rest_upload_no_content_disposition',
__( 'No Content-Disposition supplied.' ),
array( 'status' => 400 )
);
}
$filename = self::get_filename_from_disposition( $headers['content_disposition'] );
if ( empty( $filename ) ) {
return new WP_Error(
'rest_upload_invalid_disposition',
__( 'Invalid Content-Disposition supplied. Content-Disposition needs to be formatted as `attachment; filename="image.png"` or similar.' ),
array( 'status' => 400 )
);
}
if ( ! empty( $headers['content_md5'] ) ) {
$content_md5 = array_shift( $headers['content_md5'] );
$expected = trim( $content_md5 );
$actual = md5( $data );
if ( $expected !== $actual ) {
return new WP_Error(
'rest_upload_hash_mismatch',
__( 'Content hash did not match expected.' ),
array( 'status' => 412 )
);
}
}
// Get the content-type.
$type = array_shift( $headers['content_type'] );
// Include filesystem functions to get access to wp_tempnam() and wp_handle_sideload().
require_once ABSPATH . 'wp-admin/includes/file.php';
// Save the file.
$tmpfname = wp_tempnam( $filename );
$fp = fopen( $tmpfname, 'w+' );
if ( ! $fp ) {
return new WP_Error(
'rest_upload_file_error',
__( 'Could not open file handle.' ),
array( 'status' => 500 )
);
}
fwrite( $fp, $data );
fclose( $fp );
// Now, sideload it in.
$file_data = array(
'error' => null,
'tmp_name' => $tmpfname,
'name' => $filename,
'type' => $type,
);
$size_check = self::check_upload_size( $file_data );
if ( is_wp_error( $size_check ) ) {
return $size_check;
}
$overrides = array(
'test_form' => false,
);
$sideloaded = wp_handle_sideload( $file_data, $overrides );
if ( isset( $sideloaded['error'] ) ) {
@unlink( $tmpfname );
return new WP_Error(
'rest_upload_sideload_error',
$sideloaded['error'],
array( 'status' => 500 )
);
}
return $sideloaded;
}
/**
* Parses filename from a Content-Disposition header value.
*
* As per RFC6266:
*
* content-disposition = "Content-Disposition" ":"
* disposition-type *( ";" disposition-parm )
*
* disposition-type = "inline" | "attachment" | disp-ext-type
* ; case-insensitive
* disp-ext-type = token
*
* disposition-parm = filename-parm | disp-ext-parm
*
* filename-parm = "filename" "=" value
* | "filename*" "=" ext-value
*
* disp-ext-parm = token "=" value
* | ext-token "=" ext-value
* ext-token = <the characters in token, followed by "*">
*
* @since 4.7.0
*
* @link https://tools.ietf.org/html/rfc2388
* @link https://tools.ietf.org/html/rfc6266
*
* @param string[] $disposition_header List of Content-Disposition header values.
* @return string|null Filename if available, or null if not found.
*/
public static function get_filename_from_disposition( $disposition_header ) {
// Get the filename.
$filename = null;
foreach ( $disposition_header as $value ) {
$value = trim( $value );
if ( ! str_contains( $value, ';' ) ) {
continue;
}
list( $type, $attr_parts ) = explode( ';', $value, 2 );
$attr_parts = explode( ';', $attr_parts );
$attributes = array();
foreach ( $attr_parts as $part ) {
if ( ! str_contains( $part, '=' ) ) {
continue;
}
list( $key, $value ) = explode( '=', $part, 2 );
$attributes[ trim( $key ) ] = trim( $value );
}
if ( empty( $attributes['filename'] ) ) {
continue;
}
$filename = trim( $attributes['filename'] );
// Unquote quoted filename, but after trimming.
if ( str_starts_with( $filename, '"' ) && str_ends_with( $filename, '"' ) ) {
$filename = substr( $filename, 1, -1 );
}
}
return $filename;
}
/**
* Retrieves the query params for collections of attachments.
*
* @since 4.7.0
*
* @return array Query parameters for the attachment collection as an array.
*/
public function get_collection_params() {
$params = parent::get_collection_params();
$params['status']['default'] = 'inherit';
$params['status']['items']['enum'] = array( 'inherit', 'private', 'trash' );
$media_types = $this->get_media_types();
$params['media_type'] = array(
'default' => null,
'description' => __( 'Limit result set to attachments of a particular media type.' ),
'type' => 'string',
'enum' => array_keys( $media_types ),
);
$params['mime_type'] = array(
'default' => null,
'description' => __( 'Limit result set to attachments of a particular MIME type.' ),
'type' => 'string',
);
return $params;
}
/**
* Handles an upload via multipart/form-data ($_FILES).
*
* @since 4.7.0
*
* @param array $files Data from the `$_FILES` superglobal.
* @param array $headers HTTP headers from the request.
* @return array|WP_Error Data from wp_handle_upload().
*/
protected function upload_from_file( $files, $headers ) {
if ( empty( $files ) ) {
return new WP_Error(
'rest_upload_no_data',
__( 'No data supplied.' ),
array( 'status' => 400 )
);
}
// Verify hash, if given.
if ( ! empty( $headers['content_md5'] ) ) {
$content_md5 = array_shift( $headers['content_md5'] );
$expected = trim( $content_md5 );
$actual = md5_file( $files['file']['tmp_name'] );
if ( $expected !== $actual ) {
return new WP_Error(
'rest_upload_hash_mismatch',
__( 'Content hash did not match expected.' ),
array( 'status' => 412 )
);
}
}
// Pass off to WP to handle the actual upload.
$overrides = array(
'test_form' => false,
);
// Bypasses is_uploaded_file() when running unit tests.
if ( defined( 'DIR_TESTDATA' ) && DIR_TESTDATA ) {
$overrides['action'] = 'wp_handle_mock_upload';
}
$size_check = self::check_upload_size( $files['file'] );
if ( is_wp_error( $size_check ) ) {
return $size_check;
}
// Include filesystem functions to get access to wp_handle_upload().
require_once ABSPATH . 'wp-admin/includes/file.php';
$file = wp_handle_upload( $files['file'], $overrides );
if ( isset( $file['error'] ) ) {
return new WP_Error(
'rest_upload_unknown_error',
$file['error'],
array( 'status' => 500 )
);
}
return $file;
}
/**
* Retrieves the supported media types.
*
* Media types are considered the MIME type category.
*
* @since 4.7.0
*
* @return array Array of supported media types.
*/
protected function get_media_types() {
$media_types = array();
foreach ( get_allowed_mime_types() as $mime_type ) {
$parts = explode( '/', $mime_type );
if ( ! isset( $media_types[ $parts[0] ] ) ) {
$media_types[ $parts[0] ] = array();
}
$media_types[ $parts[0] ][] = $mime_type;
}
return $media_types;
}
/**
* Determine if uploaded file exceeds space quota on multisite.
*
* Replicates check_upload_size().
*
* @since 4.9.8
*
* @param array $file $_FILES array for a given file.
* @return true|WP_Error True if can upload, error for errors.
*/
protected function check_upload_size( $file ) {
if ( ! is_multisite() ) {
return true;
}
if ( get_site_option( 'upload_space_check_disabled' ) ) {
return true;
}
$space_left = get_upload_space_available();
$file_size = filesize( $file['tmp_name'] );
if ( $space_left < $file_size ) {
return new WP_Error(
'rest_upload_limited_space',
/* translators: %s: Required disk space in kilobytes. */
sprintf( __( 'Not enough space to upload. %s KB needed.' ), number_format( ( $file_size - $space_left ) / KB_IN_BYTES ) ),
array( 'status' => 400 )
);
}
if ( $file_size > ( KB_IN_BYTES * get_site_option( 'fileupload_maxk', 1500 ) ) ) {
return new WP_Error(
'rest_upload_file_too_big',
/* translators: %s: Maximum allowed file size in kilobytes. */
sprintf( __( 'This file is too big. Files must be less than %s KB in size.' ), get_site_option( 'fileupload_maxk', 1500 ) ),
array( 'status' => 400 )
);
}
// Include multisite admin functions to get access to upload_is_user_over_quota().
require_once ABSPATH . 'wp-admin/includes/ms.php';
if ( upload_is_user_over_quota( false ) ) {
return new WP_Error(
'rest_upload_user_quota_exceeded',
__( 'You have used your space quota. Please delete files before uploading.' ),
array( 'status' => 400 )
);
}
return true;
}
/**
* Gets the request args for the edit item route.
*
* @since 5.5.0
*
* @return array
*/
protected function get_edit_media_item_args() {
return array(
'src' => array(
'description' => __( 'URL to the edited image file.' ),
'type' => 'string',
'format' => 'uri',
'required' => true,
),
'modifiers' => array(
'description' => __( 'Array of image edits.' ),
'type' => 'array',
'minItems' => 1,
'items' => array(
'description' => __( 'Image edit.' ),
'type' => 'object',
'required' => array(
'type',
'args',
),
'oneOf' => array(
array(
'title' => __( 'Rotation' ),
'properties' => array(
'type' => array(
'description' => __( 'Rotation type.' ),
'type' => 'string',
'enum' => array( 'rotate' ),
),
'args' => array(
'description' => __( 'Rotation arguments.' ),
'type' => 'object',
'required' => array(
'angle',
),
'properties' => array(
'angle' => array(
'description' => __( 'Angle to rotate clockwise in degrees.' ),
'type' => 'number',
),
),
),
),
),
array(
'title' => __( 'Crop' ),
'properties' => array(
'type' => array(
'description' => __( 'Crop type.' ),
'type' => 'string',
'enum' => array( 'crop' ),
),
'args' => array(
'description' => __( 'Crop arguments.' ),
'type' => 'object',
'required' => array(
'left',
'top',
'width',
'height',
),
'properties' => array(
'left' => array(
'description' => __( 'Horizontal position from the left to begin the crop as a percentage of the image width.' ),
'type' => 'number',
),
'top' => array(
'description' => __( 'Vertical position from the top to begin the crop as a percentage of the image height.' ),
'type' => 'number',
),
'width' => array(
'description' => __( 'Width of the crop as a percentage of the image width.' ),
'type' => 'number',
),
'height' => array(
'description' => __( 'Height of the crop as a percentage of the image height.' ),
'type' => 'number',
),
),
),
),
),
),
),
),
'rotation' => array(
'description' => __( 'The amount to rotate the image clockwise in degrees. DEPRECATED: Use `modifiers` instead.' ),
'type' => 'integer',
'minimum' => 0,
'exclusiveMinimum' => true,
'maximum' => 360,
'exclusiveMaximum' => true,
),
'x' => array(
'description' => __( 'As a percentage of the image, the x position to start the crop from. DEPRECATED: Use `modifiers` instead.' ),
'type' => 'number',
'minimum' => 0,
'maximum' => 100,
),
'y' => array(
'description' => __( 'As a percentage of the image, the y position to start the crop from. DEPRECATED: Use `modifiers` instead.' ),
'type' => 'number',
'minimum' => 0,
'maximum' => 100,
),
'width' => array(
'description' => __( 'As a percentage of the image, the width to crop the image to. DEPRECATED: Use `modifiers` instead.' ),
'type' => 'number',
'minimum' => 0,
'maximum' => 100,
),
'height' => array(
'description' => __( 'As a percentage of the image, the height to crop the image to. DEPRECATED: Use `modifiers` instead.' ),
'type' => 'number',
'minimum' => 0,
'maximum' => 100,
),
);
}
}