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5dbb64d0dd
Caches the output of get_item_schema() to avoid redundant recomputation of translatable strings and other computed values. This method is called many times per item in each REST request, and the results of the method should not vary between calls. Additional schema fields are not cached. Props kadamwhite, joehoyle, TimothyBlynJacobs. Fixes #47871. Built from https://develop.svn.wordpress.org/trunk@45811 git-svn-id: http://core.svn.wordpress.org/trunk@45622 1a063a9b-81f0-0310-95a4-ce76da25c4cd
365 lines
10 KiB
PHP
365 lines
10 KiB
PHP
<?php
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/**
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* REST API: WP_REST_Search_Controller class
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*
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* @package WordPress
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* @subpackage REST_API
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* @since 5.0.0
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*/
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/**
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* Core class to search through all WordPress content via the REST API.
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*
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* @since 5.0.0
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*
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* @see WP_REST_Controller
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*/
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class WP_REST_Search_Controller extends WP_REST_Controller {
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/**
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* ID property name.
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*/
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const PROP_ID = 'id';
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/**
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* Title property name.
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*/
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const PROP_TITLE = 'title';
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/**
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* URL property name.
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*/
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const PROP_URL = 'url';
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/**
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* Type property name.
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*/
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const PROP_TYPE = 'type';
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/**
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* Subtype property name.
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*/
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const PROP_SUBTYPE = 'subtype';
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/**
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* Identifier for the 'any' type.
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*/
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const TYPE_ANY = 'any';
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/**
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* Search handlers used by the controller.
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*
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* @since 5.0.0
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* @var array
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*/
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protected $search_handlers = array();
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/**
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* Constructor.
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*
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* @since 5.0.0
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*
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* @param array $search_handlers List of search handlers to use in the controller. Each search
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* handler instance must extend the `WP_REST_Search_Handler` class.
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*/
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public function __construct( array $search_handlers ) {
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$this->namespace = 'wp/v2';
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$this->rest_base = 'search';
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foreach ( $search_handlers as $search_handler ) {
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if ( ! $search_handler instanceof WP_REST_Search_Handler ) {
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/* translators: %s: PHP class name */
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_doing_it_wrong( __METHOD__, sprintf( __( 'REST search handlers must extend the %s class.' ), 'WP_REST_Search_Handler' ), '5.0.0' );
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continue;
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}
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$this->search_handlers[ $search_handler->get_type() ] = $search_handler;
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}
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}
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/**
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* Registers the routes for the objects of the controller.
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*
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* @since 5.0.0
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*
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* @see register_rest_route()
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*/
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public function register_routes() {
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register_rest_route(
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$this->namespace,
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'/' . $this->rest_base,
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array(
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array(
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'methods' => WP_REST_Server::READABLE,
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'callback' => array( $this, 'get_items' ),
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'permission_callback' => array( $this, 'get_items_permission_check' ),
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'args' => $this->get_collection_params(),
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),
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'schema' => array( $this, 'get_public_item_schema' ),
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)
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);
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}
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/**
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* Checks if a given request has access to search content.
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*
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* @since 5.0.0
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return true|WP_Error True if the request has search access, WP_Error object otherwise.
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*/
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public function get_items_permission_check( $request ) {
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return true;
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}
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/**
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* Retrieves a collection of search results.
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*
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* @since 5.0.0
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
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*/
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public function get_items( $request ) {
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$handler = $this->get_search_handler( $request );
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if ( is_wp_error( $handler ) ) {
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return $handler;
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}
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$result = $handler->search_items( $request );
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if ( ! isset( $result[ WP_REST_Search_Handler::RESULT_IDS ] ) || ! is_array( $result[ WP_REST_Search_Handler::RESULT_IDS ] ) || ! isset( $result[ WP_REST_Search_Handler::RESULT_TOTAL ] ) ) {
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return new WP_Error( 'rest_search_handler_error', __( 'Internal search handler error.' ), array( 'status' => 500 ) );
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}
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$ids = array_map( 'absint', $result[ WP_REST_Search_Handler::RESULT_IDS ] );
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$results = array();
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foreach ( $ids as $id ) {
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$data = $this->prepare_item_for_response( $id, $request );
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$results[] = $this->prepare_response_for_collection( $data );
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}
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$total = (int) $result[ WP_REST_Search_Handler::RESULT_TOTAL ];
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$page = (int) $request['page'];
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$per_page = (int) $request['per_page'];
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$max_pages = ceil( $total / $per_page );
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if ( $page > $max_pages && $total > 0 ) {
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return new WP_Error( 'rest_search_invalid_page_number', __( 'The page number requested is larger than the number of pages available.' ), array( 'status' => 400 ) );
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}
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$response = rest_ensure_response( $results );
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$response->header( 'X-WP-Total', $total );
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$response->header( 'X-WP-TotalPages', $max_pages );
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$request_params = $request->get_query_params();
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$base = add_query_arg( urlencode_deep( $request_params ), rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ) );
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if ( $page > 1 ) {
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$prev_link = add_query_arg( 'page', $page - 1, $base );
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$response->link_header( 'prev', $prev_link );
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}
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if ( $page < $max_pages ) {
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$next_link = add_query_arg( 'page', $page + 1, $base );
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$response->link_header( 'next', $next_link );
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}
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return $response;
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}
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/**
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* Prepares a single search result for response.
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*
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* @since 5.0.0
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*
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* @param int $id ID of the item to prepare.
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* @param WP_REST_Request $request Request object.
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* @return WP_REST_Response Response object.
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*/
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public function prepare_item_for_response( $id, $request ) {
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$handler = $this->get_search_handler( $request );
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if ( is_wp_error( $handler ) ) {
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return new WP_REST_Response();
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}
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$fields = $this->get_fields_for_response( $request );
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$data = $handler->prepare_item( $id, $fields );
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$data = $this->add_additional_fields_to_object( $data, $request );
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$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
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$data = $this->filter_response_by_context( $data, $context );
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$response = rest_ensure_response( $data );
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$links = $handler->prepare_item_links( $id );
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$links['collection'] = array(
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'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
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);
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$response->add_links( $links );
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return $response;
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}
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/**
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* Retrieves the item schema, conforming to JSON Schema.
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*
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* @since 5.0.0
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*
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* @return array Item schema data.
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*/
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public function get_item_schema() {
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if ( $this->schema ) {
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return $this->add_additional_fields_schema( $this->schema );
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}
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$types = array();
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$subtypes = array();
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foreach ( $this->search_handlers as $search_handler ) {
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$types[] = $search_handler->get_type();
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$subtypes = array_merge( $subtypes, $search_handler->get_subtypes() );
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}
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$types = array_unique( $types );
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$subtypes = array_unique( $subtypes );
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$schema = array(
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'$schema' => 'http://json-schema.org/draft-04/schema#',
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'title' => 'search-result',
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'type' => 'object',
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'properties' => array(
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self::PROP_ID => array(
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'description' => __( 'Unique identifier for the object.' ),
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'type' => 'integer',
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'context' => array( 'view', 'embed' ),
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'readonly' => true,
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),
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self::PROP_TITLE => array(
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'description' => __( 'The title for the object.' ),
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'type' => 'string',
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'context' => array( 'view', 'embed' ),
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'readonly' => true,
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),
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self::PROP_URL => array(
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'description' => __( 'URL to the object.' ),
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'type' => 'string',
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'format' => 'uri',
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'context' => array( 'view', 'embed' ),
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'readonly' => true,
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),
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self::PROP_TYPE => array(
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'description' => __( 'Object type.' ),
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'type' => 'string',
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'enum' => $types,
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'context' => array( 'view', 'embed' ),
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'readonly' => true,
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),
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self::PROP_SUBTYPE => array(
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'description' => __( 'Object subtype.' ),
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'type' => 'string',
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'enum' => $subtypes,
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'context' => array( 'view', 'embed' ),
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'readonly' => true,
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),
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),
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);
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$this->schema = $schema;
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return $this->add_additional_fields_schema( $this->schema );
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}
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/**
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* Retrieves the query params for the search results collection.
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*
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* @since 5.0.0
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*
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* @return array Collection parameters.
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*/
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public function get_collection_params() {
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$types = array();
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$subtypes = array();
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foreach ( $this->search_handlers as $search_handler ) {
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$types[] = $search_handler->get_type();
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$subtypes = array_merge( $subtypes, $search_handler->get_subtypes() );
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}
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$types = array_unique( $types );
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$subtypes = array_unique( $subtypes );
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$query_params = parent::get_collection_params();
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$query_params['context']['default'] = 'view';
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$query_params[ self::PROP_TYPE ] = array(
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'default' => $types[0],
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'description' => __( 'Limit results to items of an object type.' ),
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'type' => 'string',
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'enum' => $types,
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);
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$query_params[ self::PROP_SUBTYPE ] = array(
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'default' => self::TYPE_ANY,
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'description' => __( 'Limit results to items of one or more object subtypes.' ),
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'type' => 'array',
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'items' => array(
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'enum' => array_merge( $subtypes, array( self::TYPE_ANY ) ),
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'type' => 'string',
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),
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'sanitize_callback' => array( $this, 'sanitize_subtypes' ),
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);
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return $query_params;
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}
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/**
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* Sanitizes the list of subtypes, to ensure only subtypes of the passed type are included.
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*
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* @since 5.0.0
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*
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* @param string|array $subtypes One or more subtypes.
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* @param WP_REST_Request $request Full details about the request.
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* @param string $parameter Parameter name.
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* @return array|WP_Error List of valid subtypes, or WP_Error object on failure.
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*/
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public function sanitize_subtypes( $subtypes, $request, $parameter ) {
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$subtypes = wp_parse_slug_list( $subtypes );
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$subtypes = rest_parse_request_arg( $subtypes, $request, $parameter );
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if ( is_wp_error( $subtypes ) ) {
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return $subtypes;
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}
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// 'any' overrides any other subtype.
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if ( in_array( self::TYPE_ANY, $subtypes, true ) ) {
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return array( self::TYPE_ANY );
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}
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$handler = $this->get_search_handler( $request );
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if ( is_wp_error( $handler ) ) {
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return $handler;
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}
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return array_intersect( $subtypes, $handler->get_subtypes() );
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}
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/**
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* Gets the search handler to handle the current request.
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*
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* @since 5.0.0
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return WP_REST_Search_Handler|WP_Error Search handler for the request type, or WP_Error object on failure.
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*/
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protected function get_search_handler( $request ) {
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$type = $request->get_param( self::PROP_TYPE );
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if ( ! $type || ! isset( $this->search_handlers[ $type ] ) ) {
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return new WP_Error( 'rest_search_invalid_type', __( 'Invalid type parameter.' ), array( 'status' => 400 ) );
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}
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return $this->search_handlers[ $type ];
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}
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}
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