758 lines
23 KiB
PHP
758 lines
23 KiB
PHP
<?php
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/**
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* REST API: WP_REST_Revisions_Controller class
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*
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* @package WordPress
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* @subpackage REST_API
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* @since 4.7.0
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*/
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/**
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* Core class used to access revisions via the REST API.
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*
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* @since 4.7.0
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*
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* @see WP_REST_Controller
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*/
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class WP_REST_Revisions_Controller extends WP_REST_Controller {
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/**
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* Parent post type.
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*
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* @since 4.7.0
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* @var string
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*/
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private $parent_post_type;
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/**
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* Parent controller.
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*
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* @since 4.7.0
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* @var WP_REST_Controller
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*/
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private $parent_controller;
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/**
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* The base of the parent controller's route.
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*
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* @since 4.7.0
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* @var string
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*/
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private $parent_base;
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/**
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* Constructor.
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*
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* @since 4.7.0
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*
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* @param string $parent_post_type Post type of the parent.
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*/
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public function __construct( $parent_post_type ) {
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$this->parent_post_type = $parent_post_type;
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$this->parent_controller = new WP_REST_Posts_Controller( $parent_post_type );
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$this->namespace = 'wp/v2';
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$this->rest_base = 'revisions';
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$post_type_object = get_post_type_object( $parent_post_type );
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$this->parent_base = ! empty( $post_type_object->rest_base ) ? $post_type_object->rest_base : $post_type_object->name;
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}
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/**
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* Registers routes for revisions based on post types supporting revisions.
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*
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* @since 4.7.0
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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( $this->namespace, '/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base, array(
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'args' => array(
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'parent' => array(
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'description' => __( 'The ID for the parent of the object.' ),
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'type' => 'integer',
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),
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),
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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_permissions_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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register_rest_route( $this->namespace, '/' . $this->parent_base . '/(?P<parent>[\d]+)/' . $this->rest_base . '/(?P<id>[\d]+)', array(
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'args' => array(
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'parent' => array(
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'description' => __( 'The ID for the parent of the object.' ),
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'type' => 'integer',
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),
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'id' => array(
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'description' => __( 'Unique identifier for the object.' ),
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'type' => 'integer',
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),
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),
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array(
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'methods' => WP_REST_Server::READABLE,
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'callback' => array( $this, 'get_item' ),
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'permission_callback' => array( $this, 'get_item_permissions_check' ),
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'args' => array(
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'context' => $this->get_context_param( array( 'default' => 'view' ) ),
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),
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),
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array(
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'methods' => WP_REST_Server::DELETABLE,
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'callback' => array( $this, 'delete_item' ),
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'permission_callback' => array( $this, 'delete_item_permissions_check' ),
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'args' => array(
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'force' => array(
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'type' => 'boolean',
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'default' => false,
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'description' => __( 'Required to be true, as revisions do not support trashing.' ),
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),
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),
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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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* Get the parent post, if the ID is valid.
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*
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* @since 4.7.2
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*
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* @param int $id Supplied ID.
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* @return WP_Post|WP_Error Post object if ID is valid, WP_Error otherwise.
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*/
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protected function get_parent( $parent ) {
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$error = new WP_Error( 'rest_post_invalid_parent', __( 'Invalid post parent ID.' ), array( 'status' => 404 ) );
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if ( (int) $parent <= 0 ) {
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return $error;
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}
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$parent = get_post( (int) $parent );
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if ( empty( $parent ) || empty( $parent->ID ) || $this->parent_post_type !== $parent->post_type ) {
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return $error;
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}
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return $parent;
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}
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/**
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* Checks if a given request has access to get revisions.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Request $request Full data about the request.
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* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
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*/
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public function get_items_permissions_check( $request ) {
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$parent = $this->get_parent( $request['parent'] );
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if ( is_wp_error( $parent ) ) {
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return $parent;
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}
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$parent_post_type_obj = get_post_type_object( $parent->post_type );
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if ( ! current_user_can( $parent_post_type_obj->cap->edit_post, $parent->ID ) ) {
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return new WP_Error( 'rest_cannot_read', __( 'Sorry, you are not allowed to view revisions of this post.' ), array( 'status' => rest_authorization_required_code() ) );
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}
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return true;
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}
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/**
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* Get the revision, if the ID is valid.
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*
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* @since 4.7.2
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*
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* @param int $id Supplied ID.
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* @return WP_Post|WP_Error Revision post object if ID is valid, WP_Error otherwise.
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*/
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protected function get_revision( $id ) {
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$error = new WP_Error( 'rest_post_invalid_id', __( 'Invalid revision ID.' ), array( 'status' => 404 ) );
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if ( (int) $id <= 0 ) {
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return $error;
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}
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$revision = get_post( (int) $id );
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if ( empty( $revision ) || empty( $revision->ID ) || 'revision' !== $revision->post_type ) {
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return $error;
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}
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return $revision;
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}
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/**
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* Gets a collection of revisions.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Request $request Full data 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( $request ) {
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$parent = $this->get_parent( $request['parent'] );
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if ( is_wp_error( $parent ) ) {
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return $parent;
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}
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// Ensure a search string is set in case the orderby is set to 'relevance'.
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if ( ! empty( $request['orderby'] ) && 'relevance' === $request['orderby'] && empty( $request['search'] ) ) {
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return new WP_Error( 'rest_no_search_term_defined', __( 'You need to define a search term to order by relevance.' ), array( 'status' => 400 ) );
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}
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// Ensure an include parameter is set in case the orderby is set to 'include'.
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if ( ! empty( $request['orderby'] ) && 'include' === $request['orderby'] && empty( $request['include'] ) ) {
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return new WP_Error( 'rest_orderby_include_missing_include', __( 'You need to define an include parameter to order by include.' ), array( 'status' => 400 ) );
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}
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if ( wp_revisions_enabled( $parent ) ) {
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$registered = $this->get_collection_params();
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$args = array(
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'post_parent' => $parent->ID,
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'post_type' => 'revision',
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'post_status' => 'inherit',
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'posts_per_page' => -1,
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'orderby' => 'date ID',
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'order' => 'DESC',
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'suppress_filters' => true,
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);
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$parameter_mappings = array(
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'exclude' => 'post__not_in',
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'include' => 'post__in',
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'offset' => 'offset',
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'order' => 'order',
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'orderby' => 'orderby',
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'page' => 'paged',
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'per_page' => 'posts_per_page',
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'search' => 's',
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);
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foreach ( $parameter_mappings as $api_param => $wp_param ) {
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if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) {
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$args[ $wp_param ] = $request[ $api_param ];
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}
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}
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// For backward-compatibility, 'date' needs to resolve to 'date ID'.
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if ( isset( $args['orderby'] ) && 'date' === $args['orderby'] ) {
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$args['orderby'] = 'date ID';
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}
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/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
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$args = apply_filters( 'rest_revision_query', $args, $request );
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$query_args = $this->prepare_items_query( $args, $request );
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$revisions_query = new WP_Query();
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$revisions = $revisions_query->query( $query_args );
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$offset = isset( $query_args['offset'] ) ? (int) $query_args['offset'] : 0;
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$page = (int) $query_args['paged'];
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$total_revisions = $revisions_query->found_posts;
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if ( $total_revisions < 1 ) {
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// Out-of-bounds, run the query again without LIMIT for total count.
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unset( $query_args['paged'], $query_args['offset'] );
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$count_query = new WP_Query();
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$count_query->query( $query_args );
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$total_revisions = $count_query->found_posts;
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}
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if ( $revisions_query->query_vars['posts_per_page'] > 0 ) {
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$max_pages = ceil( $total_revisions / (int) $revisions_query->query_vars['posts_per_page'] );
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} else {
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$max_pages = $total_revisions > 0 ? 1 : 0;
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}
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if ( $total_revisions > 0 ) {
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if ( $offset >= $total_revisions ) {
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return new WP_Error( 'rest_revision_invalid_offset_number', __( 'The offset number requested is larger than or equal to the number of available revisions.' ), array( 'status' => 400 ) );
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} elseif ( ! $offset && $page > $max_pages ) {
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return new WP_Error( 'rest_revision_invalid_page_number', __( 'The page number requested is larger than the number of pages available.' ), array( 'status' => 400 ) );
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}
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}
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} else {
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$revisions = array();
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$total_revisions = 0;
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$max_pages = 0;
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$page = (int) $request['page'];
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}
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$response = array();
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foreach ( $revisions as $revision ) {
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$data = $this->prepare_item_for_response( $revision, $request );
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$response[] = $this->prepare_response_for_collection( $data );
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}
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$response = rest_ensure_response( $response );
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$response->header( 'X-WP-Total', (int) $total_revisions );
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$response->header( 'X-WP-TotalPages', (int) $max_pages );
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$request_params = $request->get_query_params();
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$base = add_query_arg( $request_params, rest_url( sprintf( '%s/%s/%d/%s', $this->namespace, $this->parent_base, $request['parent'], $this->rest_base ) ) );
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if ( $page > 1 ) {
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$prev_page = $page - 1;
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if ( $prev_page > $max_pages ) {
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$prev_page = $max_pages;
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}
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$prev_link = add_query_arg( 'page', $prev_page, $base );
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$response->link_header( 'prev', $prev_link );
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}
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if ( $max_pages > $page ) {
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$next_page = $page + 1;
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$next_link = add_query_arg( 'page', $next_page, $base );
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$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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* Checks if a given request has access to get a specific revision.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Request $request Full data about the request.
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* @return bool|WP_Error True if the request has read access for the item, WP_Error object otherwise.
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*/
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public function get_item_permissions_check( $request ) {
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return $this->get_items_permissions_check( $request );
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}
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/**
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* Retrieves one revision from the collection.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Request $request Full data 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_item( $request ) {
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$parent = $this->get_parent( $request['parent'] );
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if ( is_wp_error( $parent ) ) {
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return $parent;
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}
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$revision = $this->get_revision( $request['id'] );
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if ( is_wp_error( $revision ) ) {
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return $revision;
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}
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$response = $this->prepare_item_for_response( $revision, $request );
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return rest_ensure_response( $response );
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}
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/**
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* Checks if a given request has access to delete a revision.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return bool|WP_Error True if the request has access to delete the item, WP_Error object otherwise.
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*/
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public function delete_item_permissions_check( $request ) {
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$parent = $this->get_parent( $request['parent'] );
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if ( is_wp_error( $parent ) ) {
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return $parent;
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}
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$revision = $this->get_revision( $request['id'] );
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if ( is_wp_error( $revision ) ) {
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return $revision;
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}
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$response = $this->get_items_permissions_check( $request );
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if ( ! $response || is_wp_error( $response ) ) {
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return $response;
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}
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$post_type = get_post_type_object( 'revision' );
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return current_user_can( $post_type->cap->delete_post, $revision->ID );
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}
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/**
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* Deletes a single revision.
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*
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* @since 4.7.0
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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 on success, or WP_Error object on failure.
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*/
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public function delete_item( $request ) {
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$revision = $this->get_revision( $request['id'] );
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if ( is_wp_error( $revision ) ) {
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return $revision;
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}
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$force = isset( $request['force'] ) ? (bool) $request['force'] : false;
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// We don't support trashing for revisions.
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if ( ! $force ) {
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/* translators: %s: force=true */
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return new WP_Error( 'rest_trash_not_supported', sprintf( __( "Revisions do not support trashing. Set '%s' to delete." ), 'force=true' ), array( 'status' => 501 ) );
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}
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$previous = $this->prepare_item_for_response( $revision, $request );
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$result = wp_delete_post( $request['id'], true );
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/**
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* Fires after a revision is deleted via the REST API.
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*
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* @since 4.7.0
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*
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* @param (mixed) $result The revision object (if it was deleted or moved to the trash successfully)
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* or false (failure). If the revision was moved to the trash, $result represents
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* its new state; if it was deleted, $result represents its state before deletion.
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* @param WP_REST_Request $request The request sent to the API.
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*/
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do_action( 'rest_delete_revision', $result, $request );
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if ( ! $result ) {
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return new WP_Error( 'rest_cannot_delete', __( 'The post cannot be deleted.' ), array( 'status' => 500 ) );
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}
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$response = new WP_REST_Response();
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$response->set_data( array( 'deleted' => true, 'previous' => $previous->get_data() ) );
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return $response;
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}
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/**
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* Determines the allowed query_vars for a get_items() response and prepares
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* them for WP_Query.
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*
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* @since 5.0.0
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*
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* @param array $prepared_args Optional. Prepared WP_Query arguments. Default empty array.
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* @param WP_REST_Request $request Optional. Full details about the request.
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* @return array Items query arguments.
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*/
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protected function prepare_items_query( $prepared_args = array(), $request = null ) {
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$query_args = array();
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foreach ( $prepared_args as $key => $value ) {
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/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-posts-controller.php */
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$query_args[ $key ] = apply_filters( "rest_query_var-{$key}", $value ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
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}
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// Map to proper WP_Query orderby param.
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if ( isset( $query_args['orderby'] ) && isset( $request['orderby'] ) ) {
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$orderby_mappings = array(
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'id' => 'ID',
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'include' => 'post__in',
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'slug' => 'post_name',
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'include_slugs' => 'post_name__in',
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);
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if ( isset( $orderby_mappings[ $request['orderby'] ] ) ) {
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$query_args['orderby'] = $orderby_mappings[ $request['orderby'] ];
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}
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}
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return $query_args;
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}
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/**
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* Prepares the revision for the REST response.
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*
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* @since 4.7.0
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*
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* @param WP_Post $post Post revision object.
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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( $post, $request ) {
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$GLOBALS['post'] = $post;
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setup_postdata( $post );
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$fields = $this->get_fields_for_response( $request );
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$data = array();
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if ( in_array( 'author', $fields, true ) ) {
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$data['author'] = (int) $post->post_author;
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}
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if ( in_array( 'date', $fields, true ) ) {
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$data['date'] = $this->prepare_date_response( $post->post_date_gmt, $post->post_date );
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}
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if ( in_array( 'date_gmt', $fields, true ) ) {
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$data['date_gmt'] = $this->prepare_date_response( $post->post_date_gmt );
|
|
}
|
|
|
|
if ( in_array( 'id', $fields, true ) ) {
|
|
$data['id'] = $post->ID;
|
|
}
|
|
|
|
if ( in_array( 'modified', $fields, true ) ) {
|
|
$data['modified'] = $this->prepare_date_response( $post->post_modified_gmt, $post->post_modified );
|
|
}
|
|
|
|
if ( in_array( 'modified_gmt', $fields, true ) ) {
|
|
$data['modified_gmt'] = $this->prepare_date_response( $post->post_modified_gmt );
|
|
}
|
|
|
|
if ( in_array( 'parent', $fields, true ) ) {
|
|
$data['parent'] = (int) $post->post_parent;
|
|
}
|
|
|
|
if ( in_array( 'slug', $fields, true ) ) {
|
|
$data['slug'] = $post->post_name;
|
|
}
|
|
|
|
if ( in_array( 'guid', $fields, true ) ) {
|
|
$data['guid'] = array(
|
|
/** This filter is documented in wp-includes/post-template.php */
|
|
'rendered' => apply_filters( 'get_the_guid', $post->guid, $post->ID ),
|
|
'raw' => $post->guid,
|
|
);
|
|
}
|
|
|
|
if ( in_array( 'title', $fields, true ) ) {
|
|
$data['title'] = array(
|
|
'raw' => $post->post_title,
|
|
'rendered' => get_the_title( $post->ID ),
|
|
);
|
|
}
|
|
|
|
if ( in_array( 'content', $fields, true ) ) {
|
|
|
|
$data['content'] = 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( 'excerpt', $fields, true ) ) {
|
|
$data['excerpt'] = array(
|
|
'raw' => $post->post_excerpt,
|
|
'rendered' => $this->prepare_excerpt_response( $post->post_excerpt, $post ),
|
|
);
|
|
}
|
|
|
|
$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 ( ! empty( $data['parent'] ) ) {
|
|
$response->add_link( 'parent', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->parent_base, $data['parent'] ) ) );
|
|
}
|
|
|
|
/**
|
|
* Filters a revision returned from the API.
|
|
*
|
|
* Allows modification of the revision right before it is returned.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param WP_REST_Response $response The response object.
|
|
* @param WP_Post $post The original revision object.
|
|
* @param WP_REST_Request $request Request used to generate the response.
|
|
*/
|
|
return apply_filters( 'rest_prepare_revision', $response, $post, $request );
|
|
}
|
|
|
|
/**
|
|
* Checks the post_date_gmt or modified_gmt and prepare any post or
|
|
* modified date for single post output.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param string $date_gmt GMT publication time.
|
|
* @param string|null $date Optional. Local publication time. Default null.
|
|
* @return string|null ISO8601/RFC3339 formatted datetime, otherwise null.
|
|
*/
|
|
protected function prepare_date_response( $date_gmt, $date = null ) {
|
|
if ( '0000-00-00 00:00:00' === $date_gmt ) {
|
|
return null;
|
|
}
|
|
|
|
if ( isset( $date ) ) {
|
|
return mysql_to_rfc3339( $date );
|
|
}
|
|
|
|
return mysql_to_rfc3339( $date_gmt );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the revision's schema, conforming to JSON Schema.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @return array Item schema data.
|
|
*/
|
|
public function get_item_schema() {
|
|
$schema = array(
|
|
'$schema' => 'http://json-schema.org/draft-04/schema#',
|
|
'title' => "{$this->parent_post_type}-revision",
|
|
'type' => 'object',
|
|
// Base properties for every Revision.
|
|
'properties' => array(
|
|
'author' => array(
|
|
'description' => __( 'The ID for the author of the object.' ),
|
|
'type' => 'integer',
|
|
'context' => array( 'view', 'edit', 'embed' ),
|
|
),
|
|
'date' => array(
|
|
'description' => __( "The date the object was published, in the site's timezone." ),
|
|
'type' => 'string',
|
|
'format' => 'date-time',
|
|
'context' => array( 'view', 'edit', 'embed' ),
|
|
),
|
|
'date_gmt' => array(
|
|
'description' => __( 'The date the object was published, as GMT.' ),
|
|
'type' => 'string',
|
|
'format' => 'date-time',
|
|
'context' => array( 'view', 'edit' ),
|
|
),
|
|
'guid' => array(
|
|
'description' => __( 'GUID for the object, as it exists in the database.' ),
|
|
'type' => 'string',
|
|
'context' => array( 'view', 'edit' ),
|
|
),
|
|
'id' => array(
|
|
'description' => __( 'Unique identifier for the object.' ),
|
|
'type' => 'integer',
|
|
'context' => array( 'view', 'edit', 'embed' ),
|
|
),
|
|
'modified' => array(
|
|
'description' => __( "The date the object was last modified, in the site's timezone." ),
|
|
'type' => 'string',
|
|
'format' => 'date-time',
|
|
'context' => array( 'view', 'edit' ),
|
|
),
|
|
'modified_gmt' => array(
|
|
'description' => __( 'The date the object was last modified, as GMT.' ),
|
|
'type' => 'string',
|
|
'format' => 'date-time',
|
|
'context' => array( 'view', 'edit' ),
|
|
),
|
|
'parent' => array(
|
|
'description' => __( 'The ID for the parent of the object.' ),
|
|
'type' => 'integer',
|
|
'context' => array( 'view', 'edit', 'embed' ),
|
|
),
|
|
'slug' => array(
|
|
'description' => __( 'An alphanumeric identifier for the object unique to its type.' ),
|
|
'type' => 'string',
|
|
'context' => array( 'view', 'edit', 'embed' ),
|
|
),
|
|
),
|
|
);
|
|
|
|
$parent_schema = $this->parent_controller->get_item_schema();
|
|
|
|
if ( ! empty( $parent_schema['properties']['title'] ) ) {
|
|
$schema['properties']['title'] = $parent_schema['properties']['title'];
|
|
}
|
|
|
|
if ( ! empty( $parent_schema['properties']['content'] ) ) {
|
|
$schema['properties']['content'] = $parent_schema['properties']['content'];
|
|
}
|
|
|
|
if ( ! empty( $parent_schema['properties']['excerpt'] ) ) {
|
|
$schema['properties']['excerpt'] = $parent_schema['properties']['excerpt'];
|
|
}
|
|
|
|
if ( ! empty( $parent_schema['properties']['guid'] ) ) {
|
|
$schema['properties']['guid'] = $parent_schema['properties']['guid'];
|
|
}
|
|
|
|
return $this->add_additional_fields_schema( $schema );
|
|
}
|
|
|
|
/**
|
|
* Retrieves the query params for collections.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @return array Collection parameters.
|
|
*/
|
|
public function get_collection_params() {
|
|
$query_params = parent::get_collection_params();
|
|
|
|
$query_params['context']['default'] = 'view';
|
|
|
|
unset( $query_params['per_page']['default'] );
|
|
|
|
$query_params['exclude'] = array(
|
|
'description' => __( 'Ensure result set excludes specific IDs.' ),
|
|
'type' => 'array',
|
|
'items' => array(
|
|
'type' => 'integer',
|
|
),
|
|
'default' => array(),
|
|
);
|
|
|
|
$query_params['include'] = array(
|
|
'description' => __( 'Limit result set to specific IDs.' ),
|
|
'type' => 'array',
|
|
'items' => array(
|
|
'type' => 'integer',
|
|
),
|
|
'default' => array(),
|
|
);
|
|
|
|
$query_params['offset'] = array(
|
|
'description' => __( 'Offset the result set by a specific number of items.' ),
|
|
'type' => 'integer',
|
|
);
|
|
|
|
$query_params['order'] = array(
|
|
'description' => __( 'Order sort attribute ascending or descending.' ),
|
|
'type' => 'string',
|
|
'default' => 'desc',
|
|
'enum' => array( 'asc', 'desc' ),
|
|
);
|
|
|
|
$query_params['orderby'] = array(
|
|
'description' => __( 'Sort collection by object attribute.' ),
|
|
'type' => 'string',
|
|
'default' => 'date',
|
|
'enum' => array(
|
|
'date',
|
|
'id',
|
|
'include',
|
|
'relevance',
|
|
'slug',
|
|
'include_slugs',
|
|
'title',
|
|
),
|
|
);
|
|
|
|
return $query_params;
|
|
}
|
|
|
|
/**
|
|
* Checks the post excerpt and prepare it for single post output.
|
|
*
|
|
* @since 4.7.0
|
|
*
|
|
* @param string $excerpt The post excerpt.
|
|
* @param WP_Post $post Post revision object.
|
|
* @return string Prepared excerpt or empty string.
|
|
*/
|
|
protected function prepare_excerpt_response( $excerpt, $post ) {
|
|
|
|
/** This filter is documented in wp-includes/post-template.php */
|
|
$excerpt = apply_filters( 'the_excerpt', $excerpt, $post );
|
|
|
|
if ( empty( $excerpt ) ) {
|
|
return '';
|
|
}
|
|
|
|
return $excerpt;
|
|
}
|
|
}
|