<?php
/**
* REST API: WP_REST_Menu_Locations_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.9.0
*/
/**
* Core class used to access menu locations via the REST API.
*
* @since 5.9.0
*
* @see WP_REST_Controller
*/
class WP_REST_Menu_Locations_Controller extends WP_REST_Controller {
/**
* Menu Locations Constructor.
*
* @since 5.9.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'menu-locations';
}
/**
* Registers the routes for the objects of the controller.
*
* @since 5.9.0
*
* @see register_rest_route()
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->rest_base,
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'get_items_permissions_check' ),
'args' => $this->get_collection_params(),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<location>[\w-]+)',
array(
'args' => array(
'location' => array(
'description' => __( 'An alphanumeric identifier for the menu location.' ),
'type' => 'string',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Checks whether a given request has permission to read menu locations.
*
* @since 5.9.0
*
* @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 get_items_permissions_check( $request ) {
return $this->check_has_read_only_access( $request );
}
/**
* Retrieves all menu locations, depending on user context.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
$data = array();
foreach ( get_registered_nav_menus() as $name => $description ) {
$location = new stdClass();
$location->name = $name;
$location->description = $description;
$location = $this->prepare_item_for_response( $location, $request );
$data[ $name ] = $this->prepare_response_for_collection( $location );
}
return rest_ensure_response( $data );
}
/**
* Checks if a given request has access to read a menu location.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access for the item, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
return $this->check_has_read_only_access( $request );
}
/**
* Retrieves a specific menu location.
*
* @since 5.9.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_item( $request ) {
$registered_menus = get_registered_nav_menus();
if ( ! array_key_exists( $request['location'], $registered_menus ) ) {
return new WP_Error( 'rest_menu_location_invalid', __( 'Invalid menu location.' ), array( 'status' => 404 ) );
}
$location = new stdClass();
$location->name = $request['location'];
$location->description = $registered_menus[ $location->name ];
$data = $this->prepare_item_for_response( $location, $request );
return rest_ensure_response( $data );
}
/**
* Checks whether the current user has read permission for the endpoint.
*
* @since 6.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the current user has permission, WP_Error object otherwise.
*/
protected function check_has_read_only_access( $request ) {
/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-menu-items-controller.php */
$read_only_access = apply_filters( 'rest_menu_read_access', false, $request, $this );
if ( $read_only_access ) {
return true;
}
if ( ! current_user_can( 'edit_theme_options' ) ) {
return new WP_Error(
'rest_cannot_view',
__( 'Sorry, you are not allowed to view menu locations.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Prepares a menu location object for serialization.
*
* @since 5.9.0
*
* @param stdClass $item Post status data.
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Menu location data.
*/
public function prepare_item_for_response( $item, $request ) {
// Restores the more descriptive, specific name for use within this method.
$location = $item;
$locations = get_nav_menu_locations();
$menu = $locations[ $location->name ] ?? 0;
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( rest_is_field_included( 'name', $fields ) ) {
$data['name'] = $location->name;
}
if ( rest_is_field_included( 'description', $fields ) ) {
$data['description'] = $location->description;
}
if ( rest_is_field_included( 'menu', $fields ) ) {
$data['menu'] = (int) $menu;
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
$response->add_links( $this->prepare_links( $location ) );
}
/**
* Filters menu location data returned from the REST API.
*
* @since 5.9.0
*
* @param WP_REST_Response $response The response object.
* @param object $location The original location object.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_menu_location', $response, $location, $request );
}
/**
* Prepares links for the request.
*
* @since 5.9.0
*
* @param stdClass $location Menu location.
* @return array Links for the given menu location.
*/
protected function prepare_links( $location ) {
$base = sprintf( '%s/%s', $this->namespace, $this->rest_base );
// Entity meta.
$links = array(
'self' => array(
'href' => rest_url( trailingslashit( $base ) . $location->name ),
),
'collection' => array(
'href' => rest_url( $base ),
),
);
$locations = get_nav_menu_locations();
$menu = $locations[ $location->name ] ?? 0;
if ( $menu ) {
$path = rest_get_route_for_term( $menu );
if ( $path ) {
$url = rest_url( $path );
$links['https://api.w.org/menu'][] = array(
'href' => $url,
'embeddable' => true,
);
}
}
return $links;
}
/**
* Retrieves the menu location's schema, conforming to JSON Schema.
*
* @since 5.9.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
$this->schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'menu-location',
'type' => 'object',
'properties' => array(
'name' => array(
'description' => __( 'The name of the menu location.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'description' => array(
'description' => __( 'The description of the menu location.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'menu' => array(
'description' => __( 'The ID of the assigned menu.' ),
'type' => 'integer',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
),
);
return $this->add_additional_fields_schema( $this->schema );
}
/**
* Retrieves the query params for collections.
*
* @since 5.9.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
return array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
);
}
}