diff options
Diffstat (limited to 'wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php')
| -rw-r--r-- | wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php | 1211 |
1 files changed, 1211 insertions, 0 deletions
diff --git a/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php b/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php new file mode 100644 index 0000000..cf9dc91 --- /dev/null +++ b/wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php @@ -0,0 +1,1211 @@ +<?php +/** + * REST API: WP_REST_Terms_Controller class + * + * @package WordPress + * @subpackage REST_API + * @since 4.7.0 + */ + +/** + * Core class used to managed terms associated with a taxonomy via the REST API. + * + * @since 4.7.0 + * + * @see WP_REST_Controller + */ +class WP_REST_Terms_Controller extends WP_REST_Controller { + + /** + * Taxonomy key. + * + * @since 4.7.0 + * @var string + */ + protected $taxonomy; + + /** + * Instance of a term meta fields object. + * + * @since 4.7.0 + * @var WP_REST_Term_Meta_Fields + */ + protected $meta; + + /** + * Column to have the terms be sorted by. + * + * @since 4.7.0 + * @var string + */ + protected $sort_column; + + /** + * Number of terms that were found. + * + * @since 4.7.0 + * @var int + */ + protected $total_terms; + + /** + * Whether the controller supports batching. + * + * @since 5.9.0 + * @var array + */ + protected $allow_batch = array( 'v1' => true ); + + /** + * Constructor. + * + * @since 4.7.0 + * + * @param string $taxonomy Taxonomy key. + */ + public function __construct( $taxonomy ) { + $this->taxonomy = $taxonomy; + $tax_obj = get_taxonomy( $taxonomy ); + $this->rest_base = ! empty( $tax_obj->rest_base ) ? $tax_obj->rest_base : $tax_obj->name; + $this->namespace = ! empty( $tax_obj->rest_namespace ) ? $tax_obj->rest_namespace : 'wp/v2'; + + $this->meta = new WP_REST_Term_Meta_Fields( $taxonomy ); + } + + /** + * Registers the routes for terms. + * + * @since 4.7.0 + * + * @see register_rest_route() + */ + public function register_routes() { + + register_rest_route( + $this->namespace, + '/' . $this->rest_base, + array( + array( + 'methods' => WP_REST_Server::READABLE, + 'callback' => array( $this, 'get_items' ), + 'permission_callback' => array( $this, 'get_items_permissions_check' ), + 'args' => $this->get_collection_params(), + ), + array( + 'methods' => WP_REST_Server::CREATABLE, + 'callback' => array( $this, 'create_item' ), + 'permission_callback' => array( $this, 'create_item_permissions_check' ), + 'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ), + ), + 'allow_batch' => $this->allow_batch, + 'schema' => array( $this, 'get_public_item_schema' ), + ) + ); + + register_rest_route( + $this->namespace, + '/' . $this->rest_base . '/(?P<id>[\d]+)', + array( + 'args' => array( + 'id' => array( + 'description' => __( 'Unique identifier for the term.' ), + 'type' => 'integer', + ), + ), + array( + 'methods' => WP_REST_Server::READABLE, + 'callback' => array( $this, 'get_item' ), + 'permission_callback' => array( $this, 'get_item_permissions_check' ), + 'args' => array( + '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 ), + ), + array( + 'methods' => WP_REST_Server::DELETABLE, + 'callback' => array( $this, 'delete_item' ), + 'permission_callback' => array( $this, 'delete_item_permissions_check' ), + 'args' => array( + 'force' => array( + 'type' => 'boolean', + 'default' => false, + 'description' => __( 'Required to be true, as terms do not support trashing.' ), + ), + ), + ), + 'allow_batch' => $this->allow_batch, + 'schema' => array( $this, 'get_public_item_schema' ), + ) + ); + } + + /** + * Checks if the terms for a post can be read. + * + * @since 6.0.3 + * + * @param WP_Post $post Post object. + * @param WP_REST_Request $request Full details about the request. + * @return bool Whether the terms for the post can be read. + */ + public function check_read_terms_permission_for_post( $post, $request ) { + // If the requested post isn't associated with this taxonomy, deny access. + if ( ! is_object_in_taxonomy( $post->post_type, $this->taxonomy ) ) { + return false; + } + + // Grant access if the post is publicly viewable. + if ( is_post_publicly_viewable( $post ) ) { + return true; + } + + // Otherwise grant access if the post is readable by the logged in user. + if ( current_user_can( 'read_post', $post->ID ) ) { + return true; + } + + // Otherwise, deny access. + return false; + } + + /** + * Checks if a request has access to read terms in the specified taxonomy. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return bool|WP_Error True if the request has read access, otherwise false or WP_Error object. + */ + public function get_items_permissions_check( $request ) { + $tax_obj = get_taxonomy( $this->taxonomy ); + + if ( ! $tax_obj || ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { + return false; + } + + if ( 'edit' === $request['context'] && ! current_user_can( $tax_obj->cap->edit_terms ) ) { + return new WP_Error( + 'rest_forbidden_context', + __( 'Sorry, you are not allowed to edit terms in this taxonomy.' ), + array( 'status' => rest_authorization_required_code() ) + ); + } + + if ( ! empty( $request['post'] ) ) { + $post = get_post( $request['post'] ); + + if ( ! $post ) { + return new WP_Error( + 'rest_post_invalid_id', + __( 'Invalid post ID.' ), + array( + 'status' => 400, + ) + ); + } + + if ( ! $this->check_read_terms_permission_for_post( $post, $request ) ) { + return new WP_Error( + 'rest_forbidden_context', + __( 'Sorry, you are not allowed to view terms for this post.' ), + array( + 'status' => rest_authorization_required_code(), + ) + ); + } + } + + return true; + } + + /** + * Retrieves terms associated with a taxonomy. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return WP_REST_Response|WP_Error Response object on success, or WP_Error object on failure. + */ + public function get_items( $request ) { + + // Retrieve the list of registered collection query parameters. + $registered = $this->get_collection_params(); + + /* + * This array defines mappings between public API query parameters whose + * values are accepted as-passed, and their internal WP_Query parameter + * name equivalents (some are the same). Only values which are also + * present in $registered will be set. + */ + $parameter_mappings = array( + 'exclude' => 'exclude', + 'include' => 'include', + 'order' => 'order', + 'orderby' => 'orderby', + 'post' => 'post', + 'hide_empty' => 'hide_empty', + 'per_page' => 'number', + 'search' => 'search', + 'slug' => 'slug', + ); + + $prepared_args = array( 'taxonomy' => $this->taxonomy ); + + /* + * For each known parameter which is both registered and present in the request, + * set the parameter's value on the query $prepared_args. + */ + foreach ( $parameter_mappings as $api_param => $wp_param ) { + if ( isset( $registered[ $api_param ], $request[ $api_param ] ) ) { + $prepared_args[ $wp_param ] = $request[ $api_param ]; + } + } + + if ( isset( $prepared_args['orderby'] ) && isset( $request['orderby'] ) ) { + $orderby_mappings = array( + 'include_slugs' => 'slug__in', + ); + + if ( isset( $orderby_mappings[ $request['orderby'] ] ) ) { + $prepared_args['orderby'] = $orderby_mappings[ $request['orderby'] ]; + } + } + + if ( isset( $registered['offset'] ) && ! empty( $request['offset'] ) ) { + $prepared_args['offset'] = $request['offset']; + } else { + $prepared_args['offset'] = ( $request['page'] - 1 ) * $prepared_args['number']; + } + + $taxonomy_obj = get_taxonomy( $this->taxonomy ); + + if ( $taxonomy_obj->hierarchical && isset( $registered['parent'], $request['parent'] ) ) { + if ( 0 === $request['parent'] ) { + // Only query top-level terms. + $prepared_args['parent'] = 0; + } else { + if ( $request['parent'] ) { + $prepared_args['parent'] = $request['parent']; + } + } + } + + /** + * Filters get_terms() arguments when querying terms via the REST API. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_category_query` + * - `rest_post_tag_query` + * + * Enables adding extra arguments or setting defaults for a terms + * collection request. + * + * @since 4.7.0 + * + * @link https://developer.wordpress.org/reference/functions/get_terms/ + * + * @param array $prepared_args Array of arguments for get_terms(). + * @param WP_REST_Request $request The REST API request. + */ + $prepared_args = apply_filters( "rest_{$this->taxonomy}_query", $prepared_args, $request ); + + if ( ! empty( $prepared_args['post'] ) ) { + $query_result = wp_get_object_terms( $prepared_args['post'], $this->taxonomy, $prepared_args ); + + // Used when calling wp_count_terms() below. + $prepared_args['object_ids'] = $prepared_args['post']; + } else { + $query_result = get_terms( $prepared_args ); + } + + $count_args = $prepared_args; + + unset( $count_args['number'], $count_args['offset'] ); + + $total_terms = wp_count_terms( $count_args ); + + // wp_count_terms() can return a falsey value when the term has no children. + if ( ! $total_terms ) { + $total_terms = 0; + } + + $response = array(); + + foreach ( $query_result as $term ) { + $data = $this->prepare_item_for_response( $term, $request ); + $response[] = $this->prepare_response_for_collection( $data ); + } + + $response = rest_ensure_response( $response ); + + // Store pagination values for headers. + $per_page = (int) $prepared_args['number']; + $page = ceil( ( ( (int) $prepared_args['offset'] ) / $per_page ) + 1 ); + + $response->header( 'X-WP-Total', (int) $total_terms ); + + $max_pages = ceil( $total_terms / $per_page ); + + $response->header( 'X-WP-TotalPages', (int) $max_pages ); + + $request_params = $request->get_query_params(); + $collection_url = rest_url( rest_get_route_for_taxonomy_items( $this->taxonomy ) ); + $base = add_query_arg( urlencode_deep( $request_params ), $collection_url ); + + if ( $page > 1 ) { + $prev_page = $page - 1; + + if ( $prev_page > $max_pages ) { + $prev_page = $max_pages; + } + + $prev_link = add_query_arg( 'page', $prev_page, $base ); + $response->link_header( 'prev', $prev_link ); + } + if ( $max_pages > $page ) { + $next_page = $page + 1; + $next_link = add_query_arg( 'page', $next_page, $base ); + + $response->link_header( 'next', $next_link ); + } + + return $response; + } + + /** + * Get the term, if the ID is valid. + * + * @since 4.7.2 + * + * @param int $id Supplied ID. + * @return WP_Term|WP_Error Term object if ID is valid, WP_Error otherwise. + */ + protected function get_term( $id ) { + $error = new WP_Error( + 'rest_term_invalid', + __( 'Term does not exist.' ), + array( 'status' => 404 ) + ); + + if ( ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { + return $error; + } + + if ( (int) $id <= 0 ) { + return $error; + } + + $term = get_term( (int) $id, $this->taxonomy ); + if ( empty( $term ) || $term->taxonomy !== $this->taxonomy ) { + return $error; + } + + return $term; + } + + /** + * Checks if a request has access to read or edit the specified term. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return true|WP_Error True if the request has read access for the item, otherwise WP_Error object. + */ + public function get_item_permissions_check( $request ) { + $term = $this->get_term( $request['id'] ); + + if ( is_wp_error( $term ) ) { + return $term; + } + + if ( 'edit' === $request['context'] && ! current_user_can( 'edit_term', $term->term_id ) ) { + return new WP_Error( + 'rest_forbidden_context', + __( 'Sorry, you are not allowed to edit this term.' ), + array( 'status' => rest_authorization_required_code() ) + ); + } + + return true; + } + + /** + * Gets a single term from a taxonomy. + * + * @since 4.7.0 + * + * @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 ) { + $term = $this->get_term( $request['id'] ); + if ( is_wp_error( $term ) ) { + return $term; + } + + $response = $this->prepare_item_for_response( $term, $request ); + + return rest_ensure_response( $response ); + } + + /** + * Checks if a request has access to create a term. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return true|WP_Error True if the request has access to create items, false or WP_Error object otherwise. + */ + public function create_item_permissions_check( $request ) { + + if ( ! $this->check_is_taxonomy_allowed( $this->taxonomy ) ) { + return false; + } + + $taxonomy_obj = get_taxonomy( $this->taxonomy ); + + if ( ( is_taxonomy_hierarchical( $this->taxonomy ) + && ! current_user_can( $taxonomy_obj->cap->edit_terms ) ) + || ( ! is_taxonomy_hierarchical( $this->taxonomy ) + && ! current_user_can( $taxonomy_obj->cap->assign_terms ) ) ) { + return new WP_Error( + 'rest_cannot_create', + __( 'Sorry, you are not allowed to create terms in this taxonomy.' ), + array( 'status' => rest_authorization_required_code() ) + ); + } + + return true; + } + + /** + * Creates a single term in a taxonomy. + * + * @since 4.7.0 + * + * @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 create_item( $request ) { + if ( isset( $request['parent'] ) ) { + if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) { + return new WP_Error( + 'rest_taxonomy_not_hierarchical', + __( 'Cannot set parent term, taxonomy is not hierarchical.' ), + array( 'status' => 400 ) + ); + } + + $parent = get_term( (int) $request['parent'], $this->taxonomy ); + + if ( ! $parent ) { + return new WP_Error( + 'rest_term_invalid', + __( 'Parent term does not exist.' ), + array( 'status' => 400 ) + ); + } + } + + $prepared_term = $this->prepare_item_for_database( $request ); + + $term = wp_insert_term( wp_slash( $prepared_term->name ), $this->taxonomy, wp_slash( (array) $prepared_term ) ); + if ( is_wp_error( $term ) ) { + /* + * If we're going to inform the client that the term already exists, + * give them the identifier for future use. + */ + $term_id = $term->get_error_data( 'term_exists' ); + if ( $term_id ) { + $existing_term = get_term( $term_id, $this->taxonomy ); + $term->add_data( $existing_term->term_id, 'term_exists' ); + $term->add_data( + array( + 'status' => 400, + 'term_id' => $term_id, + ) + ); + } + + return $term; + } + + $term = get_term( $term['term_id'], $this->taxonomy ); + + /** + * Fires after a single term is created or updated via the REST API. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_insert_category` + * - `rest_insert_post_tag` + * + * @since 4.7.0 + * + * @param WP_Term $term Inserted or updated term object. + * @param WP_REST_Request $request Request object. + * @param bool $creating True when creating a term, false when updating. + */ + do_action( "rest_insert_{$this->taxonomy}", $term, $request, true ); + + $schema = $this->get_item_schema(); + if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) { + $meta_update = $this->meta->update_value( $request['meta'], $term->term_id ); + + if ( is_wp_error( $meta_update ) ) { + return $meta_update; + } + } + + $fields_update = $this->update_additional_fields_for_object( $term, $request ); + + if ( is_wp_error( $fields_update ) ) { + return $fields_update; + } + + $request->set_param( 'context', 'edit' ); + + /** + * Fires after a single term is completely created or updated via the REST API. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_after_insert_category` + * - `rest_after_insert_post_tag` + * + * @since 5.0.0 + * + * @param WP_Term $term Inserted or updated term object. + * @param WP_REST_Request $request Request object. + * @param bool $creating True when creating a term, false when updating. + */ + do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, true ); + + $response = $this->prepare_item_for_response( $term, $request ); + $response = rest_ensure_response( $response ); + + $response->set_status( 201 ); + $response->header( 'Location', rest_url( $this->namespace . '/' . $this->rest_base . '/' . $term->term_id ) ); + + return $response; + } + + /** + * Checks if a request has access to update the specified term. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return true|WP_Error True if the request has access to update the item, false or WP_Error object otherwise. + */ + public function update_item_permissions_check( $request ) { + $term = $this->get_term( $request['id'] ); + + if ( is_wp_error( $term ) ) { + return $term; + } + + if ( ! current_user_can( 'edit_term', $term->term_id ) ) { + return new WP_Error( + 'rest_cannot_update', + __( 'Sorry, you are not allowed to edit this term.' ), + array( 'status' => rest_authorization_required_code() ) + ); + } + + return true; + } + + /** + * Updates a single term from a taxonomy. + * + * @since 4.7.0 + * + * @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 update_item( $request ) { + $term = $this->get_term( $request['id'] ); + if ( is_wp_error( $term ) ) { + return $term; + } + + if ( isset( $request['parent'] ) ) { + if ( ! is_taxonomy_hierarchical( $this->taxonomy ) ) { + return new WP_Error( + 'rest_taxonomy_not_hierarchical', + __( 'Cannot set parent term, taxonomy is not hierarchical.' ), + array( 'status' => 400 ) + ); + } + + $parent = get_term( (int) $request['parent'], $this->taxonomy ); + + if ( ! $parent ) { + return new WP_Error( + 'rest_term_invalid', + __( 'Parent term does not exist.' ), + array( 'status' => 400 ) + ); + } + } + + $prepared_term = $this->prepare_item_for_database( $request ); + + // Only update the term if we have something to update. + if ( ! empty( $prepared_term ) ) { + $update = wp_update_term( $term->term_id, $term->taxonomy, wp_slash( (array) $prepared_term ) ); + + if ( is_wp_error( $update ) ) { + return $update; + } + } + + $term = get_term( $term->term_id, $this->taxonomy ); + + /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */ + do_action( "rest_insert_{$this->taxonomy}", $term, $request, false ); + + $schema = $this->get_item_schema(); + if ( ! empty( $schema['properties']['meta'] ) && isset( $request['meta'] ) ) { + $meta_update = $this->meta->update_value( $request['meta'], $term->term_id ); + + if ( is_wp_error( $meta_update ) ) { + return $meta_update; + } + } + + $fields_update = $this->update_additional_fields_for_object( $term, $request ); + + if ( is_wp_error( $fields_update ) ) { + return $fields_update; + } + + $request->set_param( 'context', 'edit' ); + + /** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-terms-controller.php */ + do_action( "rest_after_insert_{$this->taxonomy}", $term, $request, false ); + + $response = $this->prepare_item_for_response( $term, $request ); + + return rest_ensure_response( $response ); + } + + /** + * Checks if a request has access to delete the specified term. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Full details about the request. + * @return true|WP_Error True if the request has access to delete the item, otherwise false or WP_Error object. + */ + public function delete_item_permissions_check( $request ) { + $term = $this->get_term( $request['id'] ); + + if ( is_wp_error( $term ) ) { + return $term; + } + + if ( ! current_user_can( 'delete_term', $term->term_id ) ) { + return new WP_Error( + 'rest_cannot_delete', + __( 'Sorry, you are not allowed to delete this term.' ), + array( 'status' => rest_authorization_required_code() ) + ); + } + + return true; + } + + /** + * Deletes a single term from a taxonomy. + * + * @since 4.7.0 + * + * @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 delete_item( $request ) { + $term = $this->get_term( $request['id'] ); + if ( is_wp_error( $term ) ) { + return $term; + } + + $force = isset( $request['force'] ) ? (bool) $request['force'] : false; + + // We don't support trashing for terms. + if ( ! $force ) { + return new WP_Error( + 'rest_trash_not_supported', + /* translators: %s: force=true */ + sprintf( __( "Terms do not support trashing. Set '%s' to delete." ), 'force=true' ), + array( 'status' => 501 ) + ); + } + + $request->set_param( 'context', 'view' ); + + $previous = $this->prepare_item_for_response( $term, $request ); + + $retval = wp_delete_term( $term->term_id, $term->taxonomy ); + + if ( ! $retval ) { + return new WP_Error( + 'rest_cannot_delete', + __( 'The term cannot be deleted.' ), + array( 'status' => 500 ) + ); + } + + $response = new WP_REST_Response(); + $response->set_data( + array( + 'deleted' => true, + 'previous' => $previous->get_data(), + ) + ); + + /** + * Fires after a single term is deleted via the REST API. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_delete_category` + * - `rest_delete_post_tag` + * + * @since 4.7.0 + * + * @param WP_Term $term The deleted term. + * @param WP_REST_Response $response The response data. + * @param WP_REST_Request $request The request sent to the API. + */ + do_action( "rest_delete_{$this->taxonomy}", $term, $response, $request ); + + return $response; + } + + /** + * Prepares a single term for create or update. + * + * @since 4.7.0 + * + * @param WP_REST_Request $request Request object. + * @return object Term object. + */ + public function prepare_item_for_database( $request ) { + $prepared_term = new stdClass(); + + $schema = $this->get_item_schema(); + if ( isset( $request['name'] ) && ! empty( $schema['properties']['name'] ) ) { + $prepared_term->name = $request['name']; + } + + if ( isset( $request['slug'] ) && ! empty( $schema['properties']['slug'] ) ) { + $prepared_term->slug = $request['slug']; + } + + if ( isset( $request['taxonomy'] ) && ! empty( $schema['properties']['taxonomy'] ) ) { + $prepared_term->taxonomy = $request['taxonomy']; + } + + if ( isset( $request['description'] ) && ! empty( $schema['properties']['description'] ) ) { + $prepared_term->description = $request['description']; + } + + if ( isset( $request['parent'] ) && ! empty( $schema['properties']['parent'] ) ) { + $parent_term_id = 0; + $requested_parent = (int) $request['parent']; + + if ( $requested_parent ) { + $parent_term = get_term( $requested_parent, $this->taxonomy ); + + if ( $parent_term instanceof WP_Term ) { + $parent_term_id = $parent_term->term_id; + } + } + + $prepared_term->parent = $parent_term_id; + } + + /** + * Filters term data before inserting term via the REST API. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_pre_insert_category` + * - `rest_pre_insert_post_tag` + * + * @since 4.7.0 + * + * @param object $prepared_term Term object. + * @param WP_REST_Request $request Request object. + */ + return apply_filters( "rest_pre_insert_{$this->taxonomy}", $prepared_term, $request ); + } + + /** + * Prepares a single term output for response. + * + * @since 4.7.0 + * + * @param WP_Term $item Term object. + * @param WP_REST_Request $request Request object. + * @return WP_REST_Response Response object. + */ + public function prepare_item_for_response( $item, $request ) { + + $fields = $this->get_fields_for_response( $request ); + $data = array(); + + if ( in_array( 'id', $fields, true ) ) { + $data['id'] = (int) $item->term_id; + } + + if ( in_array( 'count', $fields, true ) ) { + $data['count'] = (int) $item->count; + } + + if ( in_array( 'description', $fields, true ) ) { + $data['description'] = $item->description; + } + + if ( in_array( 'link', $fields, true ) ) { + $data['link'] = get_term_link( $item ); + } + + if ( in_array( 'name', $fields, true ) ) { + $data['name'] = $item->name; + } + + if ( in_array( 'slug', $fields, true ) ) { + $data['slug'] = $item->slug; + } + + if ( in_array( 'taxonomy', $fields, true ) ) { + $data['taxonomy'] = $item->taxonomy; + } + + if ( in_array( 'parent', $fields, true ) ) { + $data['parent'] = (int) $item->parent; + } + + if ( in_array( 'meta', $fields, true ) ) { + $data['meta'] = $this->meta->get_value( $item->term_id, $request ); + } + + $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( $item ) ); + } + + /** + * Filters the term data for a REST API response. + * + * The dynamic portion of the hook name, `$this->taxonomy`, refers to the taxonomy slug. + * + * Possible hook names include: + * + * - `rest_prepare_category` + * - `rest_prepare_post_tag` + * + * Allows modification of the term data right before it is returned. + * + * @since 4.7.0 + * + * @param WP_REST_Response $response The response object. + * @param WP_Term $item The original term object. + * @param WP_REST_Request $request Request used to generate the response. + */ + return apply_filters( "rest_prepare_{$this->taxonomy}", $response, $item, $request ); + } + + /** + * Prepares links for the request. + * + * @since 4.7.0 + * + * @param WP_Term $term Term object. + * @return array Links for the given term. + */ + protected function prepare_links( $term ) { + $links = array( + 'self' => array( + 'href' => rest_url( rest_get_route_for_term( $term ) ), + ), + 'collection' => array( + 'href' => rest_url( rest_get_route_for_taxonomy_items( $this->taxonomy ) ), + ), + 'about' => array( + 'href' => rest_url( sprintf( 'wp/v2/taxonomies/%s', $this->taxonomy ) ), + ), + ); + + if ( $term->parent ) { + $parent_term = get_term( (int) $term->parent, $term->taxonomy ); + + if ( $parent_term ) { + $links['up'] = array( + 'href' => rest_url( rest_get_route_for_term( $parent_term ) ), + 'embeddable' => true, + ); + } + } + + $taxonomy_obj = get_taxonomy( $term->taxonomy ); + + if ( empty( $taxonomy_obj->object_type ) ) { + return $links; + } + + $post_type_links = array(); + + foreach ( $taxonomy_obj->object_type as $type ) { + $rest_path = rest_get_route_for_post_type_items( $type ); + + if ( empty( $rest_path ) ) { + continue; + } + + $post_type_links[] = array( + 'href' => add_query_arg( $this->rest_base, $term->term_id, rest_url( $rest_path ) ), + ); + } + + if ( ! empty( $post_type_links ) ) { + $links['https://api.w.org/post_type'] = $post_type_links; + } + + return $links; + } + + /** + * Retrieves the term's schema, conforming to JSON Schema. + * + * @since 4.7.0 + * + * @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' => 'post_tag' === $this->taxonomy ? 'tag' : $this->taxonomy, + 'type' => 'object', + 'properties' => array( + 'id' => array( + 'description' => __( 'Unique identifier for the term.' ), + 'type' => 'integer', + 'context' => array( 'view', 'embed', 'edit' ), + 'readonly' => true, + ), + 'count' => array( + 'description' => __( 'Number of published posts for the term.' ), + 'type' => 'integer', + 'context' => array( 'view', 'edit' ), + 'readonly' => true, + ), + 'description' => array( + 'description' => __( 'HTML description of the term.' ), + 'type' => 'string', + 'context' => array( 'view', 'edit' ), + ), + 'link' => array( + 'description' => __( 'URL of the term.' ), + 'type' => 'string', + 'format' => 'uri', + 'context' => array( 'view', 'embed', 'edit' ), + 'readonly' => true, + ), + 'name' => array( + 'description' => __( 'HTML title for the term.' ), + 'type' => 'string', + 'context' => array( 'view', 'embed', 'edit' ), + 'arg_options' => array( + 'sanitize_callback' => 'sanitize_text_field', + ), + 'required' => true, + ), + 'slug' => array( + 'description' => __( 'An alphanumeric identifier for the term unique to its type.' ), + 'type' => 'string', + 'context' => array( 'view', 'embed', 'edit' ), + 'arg_options' => array( + 'sanitize_callback' => array( $this, 'sanitize_slug' ), + ), + ), + 'taxonomy' => array( + 'description' => __( 'Type attribution for the term.' ), + 'type' => 'string', + 'enum' => array( $this->taxonomy ), + 'context' => array( 'view', 'embed', 'edit' ), + 'readonly' => true, + ), + ), + ); + + $taxonomy = get_taxonomy( $this->taxonomy ); + + if ( $taxonomy->hierarchical ) { + $schema['properties']['parent'] = array( + 'description' => __( 'The parent term ID.' ), + 'type' => 'integer', + 'context' => array( 'view', 'edit' ), + ); + } + + $schema['properties']['meta'] = $this->meta->get_field_schema(); + + $this->schema = $schema; + + return $this->add_additional_fields_schema( $this->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(); + $taxonomy = get_taxonomy( $this->taxonomy ); + + $query_params['context']['default'] = 'view'; + + $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(), + ); + + if ( ! $taxonomy->hierarchical ) { + $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' => 'asc', + 'enum' => array( + 'asc', + 'desc', + ), + ); + + $query_params['orderby'] = array( + 'description' => __( 'Sort collection by term attribute.' ), + 'type' => 'string', + 'default' => 'name', + 'enum' => array( + 'id', + 'include', + 'name', + 'slug', + 'include_slugs', + 'term_group', + 'description', + 'count', + ), + ); + + $query_params['hide_empty'] = array( + 'description' => __( 'Whether to hide terms not assigned to any posts.' ), + 'type' => 'boolean', + 'default' => false, + ); + + if ( $taxonomy->hierarchical ) { + $query_params['parent'] = array( + 'description' => __( 'Limit result set to terms assigned to a specific parent.' ), + 'type' => 'integer', + ); + } + + $query_params['post'] = array( + 'description' => __( 'Limit result set to terms assigned to a specific post.' ), + 'type' => 'integer', + 'default' => null, + ); + + $query_params['slug'] = array( + 'description' => __( 'Limit result set to terms with one or more specific slugs.' ), + 'type' => 'array', + 'items' => array( + 'type' => 'string', + ), + ); + + /** + * Filters collection parameters for the terms controller. + * + * The dynamic part of the filter `$this->taxonomy` refers to the taxonomy + * slug for the controller. + * + * This filter registers the collection parameter, but does not map the + * collection parameter to an internal WP_Term_Query parameter. Use the + * `rest_{$this->taxonomy}_query` filter to set WP_Term_Query parameters. + * + * @since 4.7.0 + * + * @param array $query_params JSON Schema-formatted collection parameters. + * @param WP_Taxonomy $taxonomy Taxonomy object. + */ + return apply_filters( "rest_{$this->taxonomy}_collection_params", $query_params, $taxonomy ); + } + + /** + * Checks that the taxonomy is valid. + * + * @since 4.7.0 + * + * @param string $taxonomy Taxonomy to check. + * @return bool Whether the taxonomy is allowed for REST management. + */ + protected function check_is_taxonomy_allowed( $taxonomy ) { + $taxonomy_obj = get_taxonomy( $taxonomy ); + if ( $taxonomy_obj && ! empty( $taxonomy_obj->show_in_rest ) ) { + return true; + } + return false; + } +} |