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REST API: Introduce controller for searching across post types. 

Introduces a `WP_REST_Search_Controller` class which registers a `/wp/v2/search` endpoint. Search types are handled by extending `WP_REST_Search_Handler`. The default search type is `WP_REST_Post_Search_Handler` but can be filtered by plugins or a theme.

Props danielbachhuber, flixos90, pento, rmccue.
Fixes #39965.

Built from https://develop.svn.wordpress.org/branches/5.0@43739


git-svn-id: http://core.svn.wordpress.org/branches/5.0@43568 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
danielbachhuber 2018-10-17 17:03:26 +00:00
parent 07ea394b44
commit a2d601024f
6 changed files with 666 additions and 1 deletions
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14
wp-includes/rest-api.php
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@ -230,6 +230,20 @@ function create_initial_rest_routes() {
$controller = new WP_REST_Comments_Controller;
$controller->register_routes();
/**
* Filters the search handlers to use in the REST search controller.
*
* @since 5.0.0
*
* @param array $search_handlers List of search handlers to use in the controller. Each search
* handler instance must extend the `WP_REST_Search_Handler` class.
* Default is only a handler for posts.
*/
$search_handlers = apply_filters( 'wp_rest_search_handlers', array( new WP_REST_Post_Search_Handler() ) );
$controller = new WP_REST_Search_Controller( $search_handlers );
$controller->register_routes();
// Settings.
$controller = new WP_REST_Settings_Controller;
$controller->register_routes();

359
wp-includes/rest-api/endpoints/class-wp-rest-search-controller.php Normal file
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@ -0,0 +1,359 @@
<?php
/**
* REST API: WP_REST_Search_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Core class to search through all WordPress content via the REST API.
*
* @since 5.0.0
*
* @see WP_REST_Controller
*/
class WP_REST_Search_Controller extends WP_REST_Controller {
/**
* ID property name.
*/
const PROP_ID = 'id';
/**
* Title property name.
*/
const PROP_TITLE = 'title';
/**
* URL property name.
*/
const PROP_URL = 'url';
/**
* Type property name.
*/
const PROP_TYPE = 'type';
/**
* Subtype property name.
*/
const PROP_SUBTYPE = 'subtype';
/**
* Identifier for the 'any' type.
*/
const TYPE_ANY = 'any';
/**
* Search handlers used by the controller.
*
* @since 5.0.0
* @var array
*/
protected $search_handlers = array();
/**
* Constructor.
*
* @since 5.0.0
*
* @param array $search_handlers List of search handlers to use in the controller. Each search
* handler instance must extend the `WP_REST_Search_Handler` class.
*/
public function __construct( array $search_handlers ) {
$this->namespace = 'wp/v2';
$this->rest_base = 'search';
foreach ( $search_handlers as $search_handler ) {
if ( ! $search_handler instanceof WP_REST_Search_Handler ) {
/* translators: %s: PHP class name */
_doing_it_wrong( __METHOD__, sprintf( __( 'REST search handlers must extend the %s class.' ), 'WP_REST_Search_Handler' ), '5.5.0' );
continue;
}
$this->search_handlers[ $search_handler->get_type() ] = $search_handler;
}
}
/**
* Registers the routes for the objects of the controller.
*
* @since 5.0.0
*
* @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_permission_check' ),
'args' => $this->get_collection_params(),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Checks if a given request has access to search content.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has search access, WP_Error object otherwise.
*/
public function get_items_permission_check( $request ) {
return true;
}
/**
* Retrieves a collection of search results.
*
* @since 5.0.0
*
* @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 ) {
$handler = $this->get_search_handler( $request );
if ( is_wp_error( $handler ) ) {
return $handler;
}
$result = $handler->search_items( $request );
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 ] ) ) {
return new WP_Error( 'rest_search_handler_error', __( 'Internal search handler error.' ), array( 'status' => 500 ) );
}
$ids = array_map( 'absint', $result[ WP_REST_Search_Handler::RESULT_IDS ] );
$results = array();
foreach ( $ids as $id ) {
$data = $this->prepare_item_for_response( $id, $request );
$results[] = $this->prepare_response_for_collection( $data );
}
$total = (int) $result[ WP_REST_Search_Handler::RESULT_TOTAL ];
$page = (int) $request['page'];
$per_page = (int) $request['per_page'];
$max_pages = ceil( $total / $per_page );
if ( $page > $max_pages && $total > 0 ) {
return new WP_Error( 'rest_search_invalid_page_number', __( 'The page number requested is larger than the number of pages available.' ), array( 'status' => 400 ) );
}
$response = rest_ensure_response( $results );
$response->header( 'X-WP-Total', $total );
$response->header( 'X-WP-TotalPages', $max_pages );
$request_params = $request->get_query_params();
$base = add_query_arg( $request_params, rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ) );
if ( $page > 1 ) {
$prev_link = add_query_arg( 'page', $page - 1, $base );
$response->link_header( 'prev', $prev_link );
}
if ( $page < $max_pages ) {
$next_link = add_query_arg( 'page', $page + 1, $base );
$response->link_header( 'next', $next_link );
}
return $response;
}
/**
* Prepares a single search result for response.
*
* @since 5.0.0
*
* @param int $id ID of the item to prepare.
* @param WP_REST_Request $request Request object.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $id, $request ) {
$handler = $this->get_search_handler( $request );
if ( is_wp_error( $handler ) ) {
return new WP_REST_Response();
}
$fields = $this->get_fields_for_response( $request );
$data = $handler->prepare_item( $id, $fields );
$data = $this->add_additional_fields_to_object( $data, $request );
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
$links = $handler->prepare_item_links( $id );
$links['collection'] = array(
'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
);
$response->add_links( $links );
return $response;
}
/**
* Retrieves the item schema, conforming to JSON Schema.
*
* @since 5.0.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
$types = array();
$subtypes = array();
foreach ( $this->search_handlers as $search_handler ) {
$types[] = $search_handler->get_type();
$subtypes = array_merge( $subtypes, $search_handler->get_subtypes() );
}
$types = array_unique( $types );
$subtypes = array_unique( $subtypes );
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'search-result',
'type' => 'object',
'properties' => array(
self::PROP_ID => array(
'description' => __( 'Unique identifier for the object.' ),
'type' => 'integer',
'context' => array( 'view', 'embed' ),
'readonly' => true,
),
self::PROP_TITLE => array(
'description' => __( 'The title for the object.' ),
'type' => 'string',
'context' => array( 'view', 'embed' ),
'readonly' => true,
),
self::PROP_URL => array(
'description' => __( 'URL to the object.' ),
'type' => 'string',
'format' => 'uri',
'context' => array( 'view', 'embed' ),
'readonly' => true,
),
self::PROP_TYPE => array(
'description' => __( 'Object type.' ),
'type' => 'string',
'enum' => $types,
'context' => array( 'view', 'embed' ),
'readonly' => true,
),
self::PROP_SUBTYPE => array(
'description' => __( 'Object subtype.' ),
'type' => 'string',
'enum' => $subtypes,
'context' => array( 'view', 'embed' ),
'readonly' => true,
),
),
);
return $this->add_additional_fields_schema( $schema );
}
/**
* Retrieves the query params for the search results collection.
*
* @since 5.0.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$types = array();
$subtypes = array();
foreach ( $this->search_handlers as $search_handler ) {
$types[] = $search_handler->get_type();
$subtypes = array_merge( $subtypes, $search_handler->get_subtypes() );
}
$types = array_unique( $types );
$subtypes = array_unique( $subtypes );
$query_params = parent::get_collection_params();
$query_params['context']['default'] = 'view';
$query_params[ self::PROP_TYPE ] = array(
'default' => $types[0],
'description' => __( 'Limit results to items of an object type.' ),
'type' => 'string',
'enum' => $types,
);
$query_params[ self::PROP_SUBTYPE ] = array(
'default' => self::TYPE_ANY,
'description' => __( 'Limit results to items of one or more object subtypes.' ),
'type' => 'array',
'items' => array(
'enum' => array_merge( $subtypes, array( self::TYPE_ANY ) ),
'type' => 'string',
),
'sanitize_callback' => array( $this, 'sanitize_subtypes' ),
);
return $query_params;
}
/**
* Sanitizes the list of subtypes, to ensure only subtypes of the passed type are included.
*
* @since 5.0.0
*
* @param string|array $subtypes One or more subtypes.
* @param WP_REST_Request $request Full details about the request.
* @param string $parameter Parameter name.
* @return array|WP_Error List of valid subtypes, or WP_Error object on failure.
*/
public function sanitize_subtypes( $subtypes, $request, $parameter ) {
$subtypes = wp_parse_slug_list( $subtypes );
$subtypes = rest_parse_request_arg( $subtypes, $request, $parameter );
if ( is_wp_error( $subtypes ) ) {
return $subtypes;
}
// 'any' overrides any other subtype.
if ( in_array( self::TYPE_ANY, $subtypes, true ) ) {
return array( self::TYPE_ANY );
}
$handler = $this->get_search_handler( $request );
if ( is_wp_error( $handler ) ) {
return $handler;
}
return array_intersect( $subtypes, $handler->get_subtypes() );
}
/**
* Gets the search handler to handle the current request.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Search_Handler|WP_Error Search handler for the request type, or WP_Error object on failure.
*/
protected function get_search_handler( $request ) {
$type = $request->get_param( self::PROP_TYPE );
if ( ! $type || ! isset( $this->search_handlers[ $type ] ) ) {
return new WP_Error( 'rest_search_invalid_type', __( 'Invalid type parameter.' ), array( 'status' => 400 ) );
}
return $this->search_handlers[ $type ];
}
}

192
wp-includes/rest-api/search/class-wp-rest-post-search-handler.php Normal file
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@ -0,0 +1,192 @@
<?php
/**
* REST API: WP_REST_Post_Search_Handler class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Core class representing a search handler for posts in the REST API.
*
* @since 5.0.0
*/
class WP_REST_Post_Search_Handler extends WP_REST_Search_Handler {
/**
* Constructor.
*
* @since 5.0.0
*/
public function __construct() {
$this->type = 'post';
// Support all public post types except attachments.
$this->subtypes = array_diff(
array_values(
get_post_types(
array(
'public' => true,
'show_in_rest' => true,
),
'names'
)
),
array( 'attachment' )
);
}
/**
* Searches the object type content for a given search request.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full REST request.
* @return array Associative array containing an `WP_REST_Search_Handler::RESULT_IDS` containing
* an array of found IDs and `WP_REST_Search_Handler::RESULT_TOTAL` containing the
* total count for the matching search results.
*/
public function search_items( WP_REST_Request $request ) {
// Get the post types to search for the current request.
$post_types = $request[ WP_REST_Search_Controller::PROP_SUBTYPE ];
if ( in_array( WP_REST_Search_Controller::TYPE_ANY, $post_types, true ) ) {
$post_types = $this->subtypes;
}
$query_args = array(
'post_type' => $post_types,
'post_status' => 'publish',
'paged' => (int) $request['page'],
'posts_per_page' => (int) $request['per_page'],
'ignore_sticky_posts' => true,
'fields' => 'ids',
);
if ( ! empty( $request['search'] ) ) {
$query_args['s'] = $request['search'];
}
$query = new WP_Query();
$found_ids = $query->query( $query_args );
$total = $query->found_posts;
return array(
self::RESULT_IDS => $found_ids,
self::RESULT_TOTAL => $total,
);
}
/**
* Prepares the search result for a given ID.
*
* @since 5.0.0
*
* @param int $id Item ID.
* @param array $fields Fields to include for the item.
* @return array Associative array containing all fields for the item.
*/
public function prepare_item( $id, array $fields ) {
$post = get_post( $id );
$data = array();
if ( in_array( WP_REST_Search_Controller::PROP_ID, $fields, true ) ) {
$data[ WP_REST_Search_Controller::PROP_ID ] = (int) $post->ID;
}
if ( in_array( WP_REST_Search_Controller::PROP_TITLE, $fields, true ) ) {
if ( post_type_supports( $post->post_type, 'title' ) ) {
add_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
$data[ WP_REST_Search_Controller::PROP_TITLE ] = get_the_title( $post->ID );
remove_filter( 'protected_title_format', array( $this, 'protected_title_format' ) );
} else {
$data[ WP_REST_Search_Controller::PROP_TITLE ] = '';
}
}
if ( in_array( WP_REST_Search_Controller::PROP_URL, $fields, true ) ) {
$data[ WP_REST_Search_Controller::PROP_URL ] = get_permalink( $post->ID );
}
if ( in_array( WP_REST_Search_Controller::PROP_TYPE, $fields, true ) ) {
$data[ WP_REST_Search_Controller::PROP_TYPE ] = $this->type;
}
if ( in_array( WP_REST_Search_Controller::PROP_SUBTYPE, $fields, true ) ) {
$data[ WP_REST_Search_Controller::PROP_SUBTYPE ] = $post->post_type;
}
return $data;
}
/**
* Prepares links for the search result of a given ID.
*
* @since 5.0.0
*
* @param int $id Item ID.
* @return array Links for the given item.
*/
public function prepare_item_links( $id ) {
$post = get_post( $id );
$links = array();
$item_route = $this->detect_rest_item_route( $post );
if ( ! empty( $item_route ) ) {
$links['self'] = array(
'href' => rest_url( $item_route ),
'embeddable' => true,
);
}
$links['about'] = array(
'href' => rest_url( 'wp/v2/types/' . $post->post_type ),
);
return $links;
}
/**
* Overwrites the default protected title format.
*
* By default, WordPress will show password protected posts with a title of
* "Protected: %s". As the REST API communicates the protected status of a post
* in a machine readable format, we remove the "Protected: " prefix.
*
* @since 5.0.0
*
* @return string Protected title format.
*/
public function protected_title_format() {
return '%s';
}
/**
* Attempts to detect the route to access a single item.
*
* @since 5.0.0
*
* @param WP_Post $post Post object.
* @return string REST route relative to the REST base URI, or empty string if unknown.
*/
protected function detect_rest_item_route( $post ) {
$post_type = get_post_type_object( $post->post_type );
if ( ! $post_type ) {
return '';
}
// It's currently impossible to detect the REST URL from a custom controller.
if ( ! empty( $post_type->rest_controller_class ) && 'WP_REST_Posts_Controller' !== $post_type->rest_controller_class ) {
return '';
}
$namespace = 'wp/v2';
$rest_base = ! empty( $post_type->rest_base ) ? $post_type->rest_base : $post_type->name;
return sprintf( '%s/%s/%d', $namespace, $rest_base, $post->ID );
}
}

97
wp-includes/rest-api/search/class-wp-rest-search-handler.php Normal file
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@ -0,0 +1,97 @@
<?php
/**
* REST API: WP_REST_Search_Handler class
*
* @package WordPress
* @subpackage REST_API
* @since 5.0.0
*/
/**
* Core base class representing a search handler for an object type in the REST API.
*
* @since 5.0.0
*/
abstract class WP_REST_Search_Handler {
/**
* Field containing the IDs in the search result.
*/
const RESULT_IDS = 'ids';
/**
* Field containing the total count in the search result.
*/
const RESULT_TOTAL = 'total';
/**
* Object type managed by this search handler.
*
* @since 5.0.0
* @var string
*/
protected $type = '';
/**
* Object subtypes managed by this search handler.
*
* @since 5.0.0
* @var array
*/
protected $subtypes = array();
/**
* Gets the object type managed by this search handler.
*
* @since 5.0.0
*
* @return string Object type identifier.
*/
public function get_type() {
return $this->type;
}
/**
* Gets the object subtypes managed by this search handler.
*
* @since 5.0.0
*
* @return array Array of object subtype identifiers.
*/
public function get_subtypes() {
return $this->subtypes;
}
/**
* Searches the object type content for a given search request.
*
* @since 5.0.0
*
* @param WP_REST_Request $request Full REST request.
* @return array Associative array containing an `WP_REST_Search_Handler::RESULT_IDS` containing
* an array of found IDs and `WP_REST_Search_Handler::RESULT_TOTAL` containing the
* total count for the matching search results.
*/
abstract public function search_items( WP_REST_Request $request );
/**
* Prepares the search result for a given ID.
*
* @since 5.0.0
*
* @param int $id Item ID.
* @param array $fields Fields to include for the item.
* @return array Associative array containing all fields for the item.
*/
abstract public function prepare_item( $id, array $fields );
/**
* Prepares links for the search result of a given ID.
*
* @since 5.0.0
*
* @param int $id Item ID.
* @return array Links for the given item.
*/
abstract public function prepare_item_links( $id );
}

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '5.0-alpha-43738';
$wp_version = '5.0-alpha-43739';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

3
wp-settings.php
View File

@ -233,6 +233,7 @@ require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-taxonomies-control
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-terms-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-users-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-comments-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-search-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-settings-controller.php' );
require( ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-themes-controller.php' );
require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-meta-fields.php' );
@ -240,6 +241,8 @@ require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-comment-meta-fields.p
require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-post-meta-fields.php' );
require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-term-meta-fields.php' );
require( ABSPATH . WPINC . '/rest-api/fields/class-wp-rest-user-meta-fields.php' );
require( ABSPATH . WPINC . '/rest-api/search/class-wp-rest-search-handler.php' );
require( ABSPATH . WPINC . '/rest-api/search/class-wp-rest-post-search-handler.php' );
$GLOBALS['wp_embed'] = new WP_Embed();