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<?php

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/**

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* REST API: WP_REST_Menus_Controller class

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* @package WordPress

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* @subpackage REST_API

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* @since 5.9.0

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/**

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* Core class used to managed menu terms associated via the REST API.

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* @since 5.9.0

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* @see WP_REST_Controller

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class WP_REST_Menus_Controller extends WP_REST_Terms_Controller {

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/**

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* Checks if a request has access to read menus.

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* @since 5.9.0

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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 read access, otherwise false or WP_Error object.

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public function get_items_permissions_check( $request ) {

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$has_permission = parent::get_items_permissions_check( $request );

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if ( true !== $has_permission ) {

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return $has_permission;

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}

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return $this->check_has_read_only_access( $request );

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}

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/**

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* Checks if a request has access to read or edit the specified menu.

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* @since 5.9.0

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* @param WP_REST_Request $request Full details about the request.

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* @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object.

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public function get_item_permissions_check( $request ) {

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$has_permission = parent::get_item_permissions_check( $request );

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if ( true !== $has_permission ) {

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return $has_permission;

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}

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return $this->check_has_read_only_access( $request );

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}

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/**

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* Gets the term, if the ID is valid.

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* @since 5.9.0

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* @param int $id Supplied ID.

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* @return WP_Term|WP_Error Term object if ID is valid, WP_Error otherwise.

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protected function get_term( $id ) {

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$term = parent::get_term( $id );

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if ( is_wp_error( $term ) ) {

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return $term;

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}

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$nav_term = wp_get_nav_menu_object( $term );

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$nav_term->auto_add = $this->get_menu_auto_add( $nav_term->term_id );

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return $nav_term;

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}

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/**

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* Checks whether the current user has read permission for the endpoint.

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* This allows for any user that can `edit_theme_options` or edit any REST API available post type.

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* @since 5.9.0

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* @param WP_REST_Request $request Full details about the request.

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* @return true|WP_Error True if the current user has permission, WP_Error object otherwise.

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protected function check_has_read_only_access( $request ) {

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if ( current_user_can( 'edit_theme_options' ) ) {

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return true;

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}

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if ( current_user_can( 'edit_posts' ) ) {

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return true;

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}

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foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) {

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if ( 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(

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'rest_cannot_view',

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__( 'Sorry, you are not allowed to view menus.' ),

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array( 'status' => rest_authorization_required_code() )

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);

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}

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/**

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* Prepares a single term output for response.

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* @since 5.9.0

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* @param WP_Term $term Term 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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public function prepare_item_for_response( $term, $request ) {

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$nav_menu = wp_get_nav_menu_object( $term );

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$response = parent::prepare_item_for_response( $nav_menu, $request );

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$fields = $this->get_fields_for_response( $request );

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$data = $response->get_data();

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if ( rest_is_field_included( 'locations', $fields ) ) {

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$data['locations'] = $this->get_menu_locations( $nav_menu->term_id );

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}

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if ( rest_is_field_included( 'auto_add', $fields ) ) {

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$data['auto_add'] = $this->get_menu_auto_add( $nav_menu->term_id );

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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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$response = rest_ensure_response( $data );

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if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {

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$response->add_links( $this->prepare_links( $term ) );

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}

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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return apply_filters( "rest_prepare_{$this->taxonomy}", $response, $term, $request );

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}

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/**

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* Prepares links for the request.

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* @since 5.9.0

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* @param WP_Term $term Term object.

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* @return array Links for the given term.

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protected function prepare_links( $term ) {

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$links = parent::prepare_links( $term );

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$locations = $this->get_menu_locations( $term->term_id );

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foreach ( $locations as $location ) {

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$url = rest_url( sprintf( 'wp/v2/menu-locations/%s', $location ) );

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$links['https://api.w.org/menu-location'][] = array(

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'href' => $url,

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'embeddable' => true,

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);

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}

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return $links;

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}

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/**

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* Prepares a single term for create or update.

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* @since 5.9.0

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* @param WP_REST_Request $request Request object.

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* @return object Prepared term data.

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public function prepare_item_for_database( $request ) {

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$prepared_term = parent::prepare_item_for_database( $request );

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$schema = $this->get_item_schema();

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if ( isset( $request['name'] ) && ! empty( $schema['properties']['name'] ) ) {

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$prepared_term->{'menu-name'} = $request['name'];

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}

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return $prepared_term;

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}

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/**

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* Creates a single term in a taxonomy.

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* @since 5.9.0

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.

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public function create_item( $request ) {

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if ( isset( $request['parent'] ) ) {

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if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) {

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return new WP_Error( 'rest_taxonomy_not_hierarchical', __( 'Cannot set parent term, taxonomy is not hierarchical.' ), array( 'status' => 400 ) );

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}

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$parent = wp_get_nav_menu_object( (int) $request['parent'] );

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if ( ! $parent ) {

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return new WP_Error( 'rest_term_invalid', __( 'Parent term does not exist.' ), array( 'status' => 400 ) );

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}

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}

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$prepared_term = $this->prepare_item_for_database( $request );

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$term = wp_update_nav_menu_object( 0, wp_slash( (array) $prepared_term ) );

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if ( is_wp_error( $term ) ) {

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* If we're going to inform the client that the term already exists,

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* give them the identifier for future use.

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if ( in_array( 'menu_exists', $term->get_error_codes(), true ) ) {

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$existing_term = get_term_by( 'name', $prepared_term->{'menu-name'}, $this->taxonomy );

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$term->add_data( $existing_term->term_id, 'menu_exists' );

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$term->add_data(

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array(

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'status' => 400,

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'term_id' => $existing_term->term_id,

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)

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);

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} else {

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$term->add_data( array( 'status' => 400 ) );

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}

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return $term;

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}

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$term = $this->get_term( $term );

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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do_action( "rest_insert_{$this->taxonomy}", $term, $request, true );

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$schema = $this->get_item_schema();

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if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) {

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$meta_update = $this->meta->update_value( $request['meta'], $term->term_id );

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if ( is_wp_error( $meta_update ) ) {

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return $meta_update;

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}

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}

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$locations_update = $this->handle_locations( $term->term_id, $request );

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if ( is_wp_error( $locations_update ) ) {

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return $locations_update;

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}

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$this->handle_auto_add( $term->term_id, $request );

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$fields_update = $this->update_additional_fields_for_object( $term, $request );

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if ( is_wp_error( $fields_update ) ) {

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return $fields_update;

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}

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$request->set_param( 'context', 'view' );

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, true );

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$response = $this->prepare_item_for_response( $term, $request );

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$response = rest_ensure_response( $response );

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$response->set_status( 201 );

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$response->header( 'Location', rest_url( $this->namespace . '/' . $this->rest_base . '/' . $term->term_id ) );

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return $response;

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}

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/**

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* Updates a single term from a taxonomy.

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* @since 5.9.0

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.

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public function update_item( $request ) {

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$term = $this->get_term( $request['id'] );

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if ( is_wp_error( $term ) ) {

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return $term;

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}

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if ( isset( $request['parent'] ) ) {

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if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) {

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return new WP_Error( 'rest_taxonomy_not_hierarchical', __( 'Cannot set parent term, taxonomy is not hierarchical.' ), array( 'status' => 400 ) );

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}

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$parent = get_term( (int) $request['parent'], $this->taxonomy );

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if ( ! $parent ) {

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return new WP_Error( 'rest_term_invalid', __( 'Parent term does not exist.' ), array( 'status' => 400 ) );

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}

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}

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$prepared_term = $this->prepare_item_for_database( $request );

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// Only update the term if we have something to update.

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if ( ! empty( $prepared_term ) ) {

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if ( ! isset( $prepared_term->{'menu-name'} ) ) {

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// wp_update_nav_menu_object() requires that the menu-name is always passed.

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$prepared_term->{'menu-name'} = $term->name;

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}

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$update = wp_update_nav_menu_object( $term->term_id, wp_slash( (array) $prepared_term ) );

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if ( is_wp_error( $update ) ) {

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return $update;

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}

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}

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$term = get_term( $term->term_id, $this->taxonomy );

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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do_action( "rest_insert_{$this->taxonomy}", $term, $request, false );

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$schema = $this->get_item_schema();

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if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) {

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$meta_update = $this->meta->update_value( $request['meta'], $term->term_id );

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if ( is_wp_error( $meta_update ) ) {

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return $meta_update;

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}

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}

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$locations_update = $this->handle_locations( $term->term_id, $request );

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if ( is_wp_error( $locations_update ) ) {

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return $locations_update;

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}

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$this->handle_auto_add( $term->term_id, $request );

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$fields_update = $this->update_additional_fields_for_object( $term, $request );

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if ( is_wp_error( $fields_update ) ) {

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return $fields_update;

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}

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$request->set_param( 'context', 'view' );

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, false );

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$response = $this->prepare_item_for_response( $term, $request );

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return rest_ensure_response( $response );

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}

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/**

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* Deletes a single term from a taxonomy.

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* @since 5.9.0

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* @param WP_REST_Request $request Full details about the request.

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* @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure.

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public function delete_item( $request ) {

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$term = $this->get_term( $request['id'] );

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if ( is_wp_error( $term ) ) {

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return $term;

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}

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// We don't support trashing for terms.

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if ( ! $request['force'] ) {

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/* translators: %s: force=true */

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return new WP_Error( 'rest_trash_not_supported', sprintf( __( "Menus do not support trashing. Set '%s' to delete." ), 'force=true' ), array( 'status' => 501 ) );

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}

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$request->set_param( 'context', 'view' );

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$previous = $this->prepare_item_for_response( $term, $request );

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$result = wp_delete_nav_menu( $term );

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if ( ! $result || is_wp_error( $result ) ) {

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return new WP_Error( 'rest_cannot_delete', __( 'The menu 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(

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array(

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'deleted' => true,

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'previous' => $previous->get_data(),

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)

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);

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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */

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do_action( "rest_delete_{$this->taxonomy}", $term, $response, $request );

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return $response;

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}

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/**

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* Returns the value of a menu's auto_add setting.

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* @since 5.9.0

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* @param int $menu_id The menu id to query.

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* @return bool The value of auto_add.

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protected function get_menu_auto_add( $menu_id ) {

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$nav_menu_option = (array) get_option( 'nav_menu_options', array( 'auto_add' => array() ) );

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return in_array( $menu_id, $nav_menu_option['auto_add'], true );

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}

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/**

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* Updates the menu's auto add from a REST request.

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* @since 5.9.0

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* @param int $menu_id The menu id to update.

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* @param WP_REST_Request $request Full details about the request.

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* @return bool True if the auto add setting was successfully updated.

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protected function handle_auto_add( $menu_id, $request ) {

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if ( ! isset( $request['auto_add'] ) ) {

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return true;

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}

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$nav_menu_option = (array) get_option( 'nav_menu_options', array( 'auto_add' => array() ) );

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if ( ! isset( $nav_menu_option['auto_add'] ) ) {

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$nav_menu_option['auto_add'] = array();

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}

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$auto_add = $request['auto_add'];

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$i = array_search( $menu_id, $nav_menu_option['auto_add'], true );

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if ( $auto_add && false === $i ) {

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$nav_menu_option['auto_add'][] = $menu_id;

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} elseif ( ! $auto_add && false !== $i ) {

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array_splice( $nav_menu_option['auto_add'], $i, 1 );

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}

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$update = update_option( 'nav_menu_options', $nav_menu_option );

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/** This action is documented in wp-includes/nav-menu.php */

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do_action( 'wp_update_nav_menu', $menu_id );

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return $update;

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}

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/**

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* Returns the names of the locations assigned to the menu.

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* @since 5.9.0

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* @param int $menu_id The menu id.

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* @return string[] The locations assigned to the menu.

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protected function get_menu_locations( $menu_id ) {

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$locations = get_nav_menu_locations();

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$menu_locations = array();

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foreach ( $locations as $location => $assigned_menu_id ) {

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if ( $menu_id === $assigned_menu_id ) {

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$menu_locations[] = $location;

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}

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}

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return $menu_locations;

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}

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/**

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* Updates the menu's locations from a REST request.

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* @since 5.9.0

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* @param int $menu_id The menu id to update.

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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, a WP_Error on an error updating any of the locations.

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protected function handle_locations( $menu_id, $request ) {

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if ( ! isset( $request['locations'] ) ) {

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return true;

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}

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$menu_locations = get_registered_nav_menus();

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$menu_locations = array_keys( $menu_locations );

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$new_locations = array();

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foreach ( $request['locations'] as $location ) {

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if ( ! in_array( $location, $menu_locations, true ) ) {

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return new WP_Error(

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'rest_invalid_menu_location',

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__( 'Invalid menu location.' ),

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array(

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'status' => 400,

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'location' => $location,

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