<?php
/**
* REST API: WP_REST_Sidebars_Controller class
*
* Original code from {@link https://github.com/martin-pettersson/wp-rest-api-sidebars Martin Pettersson (martin_pettersson@outlook.com)}.
*
* @package WordPress
* @subpackage REST_API
* @since 5.8.0
*/
/**
* Core class used to manage a site's sidebars.
*
* @since 5.8.0
*
* @see WP_REST_Controller
*/
class WP_REST_Sidebars_Controller extends WP_REST_Controller {
/**
* Tracks whether {@see retrieve_widgets()} has been called in the current request.
*
* @since 5.9.0
* @var bool
*/
protected $widgets_retrieved = false;
/**
* Sidebars controller constructor.
*
* @since 5.8.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'sidebars';
}
/**
* Registers the controllers routes.
*
* @since 5.8.0
*/
public function register_routes() {
register_rest_route(
$this->namespace,
'/' . $this->rest_base,
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_items' ),
'permission_callback' => array( $this, 'get_items_permissions_check' ),
'args' => array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/(?P<id>[\w-]+)',
array(
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => array( $this, 'get_item_permissions_check' ),
'args' => array(
'id' => array(
'description' => __( 'The id of a registered sidebar' ),
'type' => 'string',
),
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
),
),
array(
'methods' => WP_REST_Server::EDITABLE,
'callback' => array( $this, 'update_item' ),
'permission_callback' => array( $this, 'update_item_permissions_check' ),
'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Checks if a given request has access to get sidebars.
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_items_permissions_check( $request ) {
$this->retrieve_widgets();
foreach ( wp_get_sidebars_widgets() as $id => $widgets ) {
$sidebar = $this->get_sidebar( $id );
if ( ! $sidebar ) {
continue;
}
if ( $this->check_read_permission( $sidebar ) ) {
return true;
}
}
return $this->do_permissions_check();
}
/**
* Retrieves the list of sidebars (active or inactive).
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Response object on success.
*/
public function get_items( $request ) {
if ( $request->is_method( 'HEAD' ) ) {
// Return early as this handler doesn't add any response headers.
return new WP_REST_Response( array() );
}
$this->retrieve_widgets();
$data = array();
$permissions_check = $this->do_permissions_check();
foreach ( wp_get_sidebars_widgets() as $id => $widgets ) {
$sidebar = $this->get_sidebar( $id );
if ( ! $sidebar ) {
continue;
}
if ( is_wp_error( $permissions_check ) && ! $this->check_read_permission( $sidebar ) ) {
continue;
}
$data[] = $this->prepare_response_for_collection(
$this->prepare_item_for_response( $sidebar, $request )
);
}
return rest_ensure_response( $data );
}
/**
* Checks if a given request has access to get a single sidebar.
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function get_item_permissions_check( $request ) {
$this->retrieve_widgets();
$sidebar = $this->get_sidebar( $request['id'] );
if ( $sidebar && $this->check_read_permission( $sidebar ) ) {
return true;
}
return $this->do_permissions_check();
}
/**
* Checks if a sidebar can be read publicly.
*
* @since 5.9.0
*
* @param array $sidebar The registered sidebar configuration.
* @return bool Whether the side can be read.
*/
protected function check_read_permission( $sidebar ) {
return ! empty( $sidebar['show_in_rest'] );
}
/**
* Retrieves one sidebar from the collection.
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.
*/
public function get_item( $request ) {
$this->retrieve_widgets();
$sidebar = $this->get_sidebar( $request['id'] );
if ( ! $sidebar ) {
return new WP_Error( 'rest_sidebar_not_found', __( 'No sidebar exists with that id.' ), array( 'status' => 404 ) );
}
return $this->prepare_item_for_response( $sidebar, $request );
}
/**
* Checks if a given request has access to update sidebars.
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
public function update_item_permissions_check( $request ) {
return $this->do_permissions_check();
}
/**
* Updates a sidebar.
*
* @since 5.8.0
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function update_item( $request ) {
if ( isset( $request['widgets'] ) ) {
$sidebars = wp_get_sidebars_widgets();
foreach ( $sidebars as $sidebar_id => $widgets ) {
foreach ( $widgets as $i => $widget_id ) {
// This automatically removes the passed widget IDs from any other sidebars in use.
if ( $sidebar_id !== $request['id'] && in_array( $widget_id, $request['widgets'], true ) ) {
unset( $sidebars[ $sidebar_id ][ $i ] );
}
// This automatically removes omitted widget IDs to the inactive sidebar.
if ( $sidebar_id === $request['id'] && ! in_array( $widget_id, $request['widgets'], true ) ) {
$sidebars['wp_inactive_widgets'][] = $widget_id;
}
}
}
$sidebars[ $request['id'] ] = $request['widgets'];
wp_set_sidebars_widgets( $sidebars );
}
$request['context'] = 'edit';
$sidebar = $this->get_sidebar( $request['id'] );
/**
* Fires after a sidebar is updated via the REST API.
*
* @since 5.8.0
*
* @param array $sidebar The updated sidebar.
* @param WP_REST_Request $request Request object.
*/
do_action( 'rest_save_sidebar', $sidebar, $request );
return $this->prepare_item_for_response( $sidebar, $request );
}
/**
* Checks if the user has permissions to make the request.
*
* @since 5.8.0
*
* @return true|WP_Error True if the request has read access, WP_Error object otherwise.
*/
protected function do_permissions_check() {
/*
* Verify if the current user has edit_theme_options capability.
* This capability is required to access the widgets screen.
*/
if ( ! current_user_can( 'edit_theme_options' ) ) {
return new WP_Error(
'rest_cannot_manage_widgets',
__( 'Sorry, you are not allowed to manage widgets on this site.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Retrieves the registered sidebar with the given id.
*
* @since 5.8.0
*
* @param string|int $id ID of the sidebar.
* @return array|null The discovered sidebar, or null if it is not registered.
*/
protected function get_sidebar( $id ) {
return wp_get_sidebar( $id );
}
/**
* Looks for "lost" widgets once per request.
*
* @since 5.9.0
*
* @see retrieve_widgets()
*/
protected function retrieve_widgets() {
if ( ! $this->widgets_retrieved ) {
retrieve_widgets();
$this->widgets_retrieved = true;
}
}
/**
* Prepares a single sidebar output for response.
*
* @since 5.8.0
* @since 5.9.0 Renamed `$raw_sidebar` to `$item` to match parent class for PHP 8 named parameter support.
*
* @global array $wp_registered_sidebars The registered sidebars.
* @global array $wp_registered_widgets The registered widgets.
*
* @param array $item Sidebar instance.
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Prepared response object.
*/
public function prepare_item_for_response( $item, $request ) {
global $wp_registered_sidebars, $wp_registered_widgets;
// Restores the more descriptive, specific name for use within this method.
$raw_sidebar = $item;
// Don't prepare the response body for HEAD requests.
if ( $request->is_method( 'HEAD' ) ) {
/** This filter is documented in wp-includes/rest-api/endpoints/class-wp-rest-sidebars-controller.php */
return apply_filters( 'rest_prepare_sidebar', new WP_REST_Response( array() ), $raw_sidebar, $request );
}
$id = $raw_sidebar['id'];
$sidebar = array( 'id' => $id );
if ( isset( $wp_registered_sidebars[ $id ] ) ) {
$registered_sidebar = $wp_registered_sidebars[ $id ];
$sidebar['status'] = 'active';
$sidebar['name'] = isset( $registered_sidebar['name'] ) ? $registered_sidebar['name'] : '';
$sidebar['description'] = isset( $registered_sidebar['description'] ) ? wp_sidebar_description( $id ) : '';
$sidebar['class'] = isset( $registered_sidebar['class'] ) ? $registered_sidebar['class'] : '';
$sidebar['before_widget'] = isset( $registered_sidebar['before_widget'] ) ? $registered_sidebar['before_widget'] : '';
$sidebar['after_widget'] = isset( $registered_sidebar['after_widget'] ) ? $registered_sidebar['after_widget'] : '';
$sidebar['before_title'] = isset( $registered_sidebar['before_title'] ) ? $registered_sidebar['before_title'] : '';
$sidebar['after_title'] = isset( $registered_sidebar['after_title'] ) ? $registered_sidebar['after_title'] : '';
} else {
$sidebar['status'] = 'inactive';
$sidebar['name'] = $raw_sidebar['name'];
$sidebar['description'] = '';
$sidebar['class'] = '';
}
if ( wp_is_block_theme() ) {
$sidebar['status'] = 'inactive';
}
$fields = $this->get_fields_for_response( $request );
if ( rest_is_field_included( 'widgets', $fields ) ) {
$sidebars = wp_get_sidebars_widgets();
$widgets = array_filter(
isset( $sidebars[ $sidebar['id'] ] ) ? $sidebars[ $sidebar['id'] ] : array(),
static function ( $widget_id ) use ( $wp_registered_widgets ) {
return isset( $wp_registered_widgets[ $widget_id ] );
}
);
$sidebar['widgets'] = array_values( $widgets );
}
$schema = $this->get_item_schema();
$data = array();
foreach ( $schema['properties'] as $property_id => $property ) {
if ( isset( $sidebar[ $property_id ] ) && true === rest_validate_value_from_schema( $sidebar[ $property_id ], $property ) ) {
$data[ $property_id ] = $sidebar[ $property_id ];
} elseif ( isset( $property['default'] ) ) {
$data[ $property_id ] = $property['default'];
}
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
$response = rest_ensure_response( $data );
if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
$response->add_links( $this->prepare_links( $sidebar ) );
}
/**
* Filters the REST API response for a sidebar.
*
* @since 5.8.0
*
* @param WP_REST_Response $response The response object.
* @param array $raw_sidebar The raw sidebar data.
* @param WP_REST_Request $request The request object.
*/
return apply_filters( 'rest_prepare_sidebar', $response, $raw_sidebar, $request );
}
/**
* Prepares links for the sidebar.
*
* @since 5.8.0
*
* @param array $sidebar Sidebar.
* @return array Links for the given widget.
*/
protected function prepare_links( $sidebar ) {
return array(
'collection' => array(
'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
),
'self' => array(
'href' => rest_url( sprintf( '%s/%s/%s', $this->namespace, $this->rest_base, $sidebar['id'] ) ),
),
'https://api.w.org/widget' => array(
'href' => add_query_arg( 'sidebar', $sidebar['id'], rest_url( '/wp/v2/widgets' ) ),
'embeddable' => true,
),
);
}
/**
* Retrieves the block type' schema, conforming to JSON Schema.
*
* @since 5.8.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
if ( $this->schema ) {
return $this->add_additional_fields_schema( $this->schema );
}
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'sidebar',
'type' => 'object',
'properties' => array(
'id' => array(
'description' => __( 'ID of sidebar.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'name' => array(
'description' => __( 'Unique name identifying the sidebar.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'description' => array(
'description' => __( 'Description of sidebar.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'class' => array(
'description' => __( 'Extra CSS class to assign to the sidebar in the Widgets interface.' ),
'type' => 'string',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'before_widget' => array(
'description' => __( 'HTML content to prepend to each widget\'s HTML output when assigned to this sidebar. Default is an opening list item element.' ),
'type' => 'string',
'default' => '',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'after_widget' => array(
'description' => __( 'HTML content to append to each widget\'s HTML output when assigned to this sidebar. Default is a closing list item element.' ),
'type' => 'string',
'default' => '',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'before_title' => array(
'description' => __( 'HTML content to prepend to the sidebar title when displayed. Default is an opening h2 element.' ),
'type' => 'string',
'default' => '',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'after_title' => array(
'description' => __( 'HTML content to append to the sidebar title when displayed. Default is a closing h2 element.' ),
'type' => 'string',
'default' => '',
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'status' => array(
'description' => __( 'Status of sidebar.' ),
'type' => 'string',
'enum' => array( 'active', 'inactive' ),
'context' => array( 'embed', 'view', 'edit' ),
'readonly' => true,
),
'widgets' => array(
'description' => __( 'Nested widgets.' ),
'type' => 'array',
'items' => array(
'type' => array( 'object', 'string' ),
),
'default' => array(),
'context' => array( 'embed', 'view', 'edit' ),
),
),
);
$this->schema = $schema;
return $this->add_additional_fields_schema( $this->schema );
}
}
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