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For the block editor to be able to expose the Preview button correctly, it needs to know the `is_post_type_viewable()` setting, this change adds it to the Post Type response. Props danielbachhuber. Merges [43007] to the 4.9 branch. Fixes #43739. Built from https://develop.svn.wordpress.org/branches/4.9@43038 git-svn-id: http://core.svn.wordpress.org/branches/4.9@42867 1a063a9b-81f0-0310-95a4-ce76da25c4cd
291 lines
9.0 KiB
PHP
291 lines
9.0 KiB
PHP
<?php
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/**
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* REST API: WP_REST_Post_Types_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 to access post types 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_Post_Types_Controller extends WP_REST_Controller {
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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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public function __construct() {
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$this->namespace = 'wp/v2';
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$this->rest_base = 'types';
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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 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->rest_base, 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_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->rest_base . '/(?P<type>[\w-]+)', array(
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'args' => array(
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'type' => array(
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'description' => __( 'An alphanumeric identifier for the post type.' ),
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'type' => 'string',
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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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'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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'schema' => array( $this, 'get_public_item_schema' ),
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) );
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}
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/**
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* Checks whether a given request has permission to read types.
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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 WP_Error|true 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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if ( 'edit' === $request['context'] ) {
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foreach ( get_post_types( array(), 'object' ) as $post_type ) {
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if ( ! empty( $post_type->show_in_rest ) && current_user_can( $post_type->cap->edit_posts ) ) {
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return true;
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}
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}
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return new WP_Error( 'rest_cannot_view', __( 'Sorry, you are not allowed to edit posts in this post type.' ), 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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* Retrieves all public post types.
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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 WP_Error|WP_REST_Response Response object on success, or WP_Error object on failure.
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*/
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public function get_items( $request ) {
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$data = array();
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foreach ( get_post_types( array(), 'object' ) as $obj ) {
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if ( empty( $obj->show_in_rest ) || ( 'edit' === $request['context'] && ! current_user_can( $obj->cap->edit_posts ) ) ) {
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continue;
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}
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$post_type = $this->prepare_item_for_response( $obj, $request );
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$data[ $obj->name ] = $this->prepare_response_for_collection( $post_type );
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}
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return rest_ensure_response( $data );
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}
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/**
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* Retrieves a specific post type.
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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 WP_Error|WP_REST_Response Response object on success, or WP_Error object on failure.
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*/
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public function get_item( $request ) {
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$obj = get_post_type_object( $request['type'] );
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if ( empty( $obj ) ) {
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return new WP_Error( 'rest_type_invalid', __( 'Invalid post type.' ), array( 'status' => 404 ) );
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}
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if ( empty( $obj->show_in_rest ) ) {
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return new WP_Error( 'rest_cannot_read_type', __( 'Cannot view post type.' ), array( 'status' => rest_authorization_required_code() ) );
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}
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if ( 'edit' === $request['context'] && ! current_user_can( $obj->cap->edit_posts ) ) {
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return new WP_Error( 'rest_forbidden_context', __( 'Sorry, you are not allowed to edit posts in this post type.' ), array( 'status' => rest_authorization_required_code() ) );
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}
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$data = $this->prepare_item_for_response( $obj, $request );
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return rest_ensure_response( $data );
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}
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/**
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* Prepares a post type object for serialization.
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*
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* @since 4.7.0
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*
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* @param stdClass $post_type Post type data.
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* @param WP_REST_Request $request Full details about the request.
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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_type, $request ) {
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$taxonomies = wp_list_filter( get_object_taxonomies( $post_type->name, 'objects' ), array( 'show_in_rest' => true ) );
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$taxonomies = wp_list_pluck( $taxonomies, 'name' );
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$base = ! empty( $post_type->rest_base ) ? $post_type->rest_base : $post_type->name;
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$supports = get_all_post_type_supports( $post_type->name );
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$data = array(
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'capabilities' => $post_type->cap,
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'description' => $post_type->description,
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'hierarchical' => $post_type->hierarchical,
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'viewable' => is_post_type_viewable( $post_type ),
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'labels' => $post_type->labels,
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'name' => $post_type->label,
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'slug' => $post_type->name,
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'supports' => $supports,
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'taxonomies' => array_values( $taxonomies ),
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'rest_base' => $base,
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);
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$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
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$data = $this->add_additional_fields_to_object( $data, $request );
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$data = $this->filter_response_by_context( $data, $context );
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// Wrap the data in a response object.
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$response = rest_ensure_response( $data );
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$response->add_links( array(
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'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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'https://api.w.org/items' => array(
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'href' => rest_url( sprintf( 'wp/v2/%s', $base ) ),
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),
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) );
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/**
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* Filters a post type returned from the API.
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*
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* Allows modification of the post type data right before it is returned.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Response $response The response object.
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* @param object $item The original post type object.
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* @param WP_REST_Request $request Request used to generate the response.
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*/
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return apply_filters( 'rest_prepare_post_type', $response, $post_type, $request );
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}
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/**
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* Retrieves the post type's schema, conforming to JSON Schema.
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*
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* @since 4.7.0
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*
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* @return array Item schema data.
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*/
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public function get_item_schema() {
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$schema = array(
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'$schema' => 'http://json-schema.org/draft-04/schema#',
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'title' => 'type',
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'type' => 'object',
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'properties' => array(
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'capabilities' => array(
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'description' => __( 'All capabilities used by the post type.' ),
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'type' => 'object',
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'context' => array( 'edit' ),
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'readonly' => true,
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),
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'description' => array(
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'description' => __( 'A human-readable description of the post type.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit' ),
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'readonly' => true,
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),
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'hierarchical' => array(
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'description' => __( 'Whether or not the post type should have children.' ),
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'type' => 'boolean',
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'context' => array( 'view', 'edit' ),
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'readonly' => true,
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),
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'viewable' => array(
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'description' => __( 'Whether or not the post type can be viewed.' ),
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'type' => 'boolean',
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'context' => array( 'edit' ),
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'readonly' => true,
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),
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'labels' => array(
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'description' => __( 'Human-readable labels for the post type for various contexts.' ),
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'type' => 'object',
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'context' => array( 'edit' ),
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'readonly' => true,
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),
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'name' => array(
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'description' => __( 'The title for the post type.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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),
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'slug' => array(
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'description' => __( 'An alphanumeric identifier for the post type.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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),
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'supports' => array(
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'description' => __( 'All features, supported by the post type.' ),
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'type' => 'object',
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'context' => array( 'edit' ),
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'readonly' => true,
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),
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'taxonomies' => array(
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'description' => __( 'Taxonomies associated with post type.' ),
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'type' => 'array',
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'items' => array(
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'type' => 'string',
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),
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'context' => array( 'view', 'edit' ),
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'readonly' => true,
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),
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'rest_base' => array(
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'description' => __( 'REST base route for the post type.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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),
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),
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);
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return $this->add_additional_fields_schema( $schema );
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}
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/**
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* Retrieves the query params for collections.
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*
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* @since 4.7.0
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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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return 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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}
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