class-wc-rest-terms-controller.php
<?php
/**
* Abstract Rest Terms Controller
*
* @package WooCommerce\RestApi
* @version 3.3.0
*/
if ( ! defined( 'ABSPATH' ) ) {
exit;
}
use Automattic\WooCommerce\Internal\AssignDefaultCategory;
/**
* Terms controller class.
*/
abstract class WC_REST_Terms_Controller extends WC_REST_Controller {
/**
* Route base.
*
* @var string
*/
protected $rest_base = '';
/**
* Taxonomy.
*
* @var string
*/
protected $taxonomy = '';
/**
* Cached taxonomies by attribute id.
*
* @var array
*/
protected $taxonomies_by_id = array();
/**
* Register the routes for terms.
*/
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' => array_merge(
$this->get_endpoint_args_for_item_schema( WP_REST_Server::CREATABLE ),
array(
'name' => array(
'type' => 'string',
'description' => __( 'Name for the resource.', 'woocommerce' ),
'required' => true,
),
)
),
),
'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 resource.', 'woocommerce' ),
'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(
'default' => false,
'type' => 'boolean',
'description' => __( 'Required to be true, as resource does not support trashing.', 'woocommerce' ),
),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
register_rest_route(
$this->namespace,
'/' . $this->rest_base . '/batch',
array(
array(
'methods' => WP_REST_Server::EDITABLE,
'callback' => array( $this, 'batch_items' ),
'permission_callback' => array( $this, 'batch_items_permissions_check' ),
'args' => $this->get_endpoint_args_for_item_schema( WP_REST_Server::EDITABLE ),
),
'schema' => array( $this, 'get_public_batch_schema' ),
)
);
}
/**
* Check if a given request has access to read the terms.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|boolean
*/
public function get_items_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'read' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_view', __( 'Sorry, you cannot list resources.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check if a given request has access to create a term.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|boolean
*/
public function create_item_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'create' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_create', __( 'Sorry, you are not allowed to create resources.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check if a given request has access to read a term.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|boolean
*/
public function get_item_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'read' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_view', __( 'Sorry, you cannot view this resource.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check if a given request has access to update a term.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|boolean
*/
public function update_item_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'edit' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_edit', __( 'Sorry, you are not allowed to edit this resource.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check if a given request has access to delete a term.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_Error|boolean
*/
public function delete_item_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'delete' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_delete', __( 'Sorry, you are not allowed to delete this resource.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check if a given request has access batch create, update and delete items.
*
* @param WP_REST_Request $request Full details about the request.
* @return boolean|WP_Error
*/
public function batch_items_permissions_check( $request ) {
$permissions = $this->check_permissions( $request, 'batch' );
if ( is_wp_error( $permissions ) ) {
return $permissions;
}
if ( ! $permissions ) {
return new WP_Error( 'woocommerce_rest_cannot_batch', __( 'Sorry, you are not allowed to batch manipulate this resource.', 'woocommerce' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Check permissions.
*
* @param WP_REST_Request $request Full details about the request.
* @param string $context Request context.
* @return bool|WP_Error
*/
protected function check_permissions( $request, $context = 'read' ) {
// Get taxonomy.
$taxonomy = $this->get_taxonomy( $request );
if ( ! $taxonomy || ! taxonomy_exists( $taxonomy ) ) {
return new WP_Error( 'woocommerce_rest_taxonomy_invalid', __( 'Taxonomy does not exist.', 'woocommerce' ), array( 'status' => 404 ) );
}
// Check permissions for a single term.
$id = intval( $request['id'] );
if ( $id ) {
$term = get_term( $id, $taxonomy );
if ( is_wp_error( $term ) || ! $term || $term->taxonomy !== $taxonomy ) {
return new WP_Error( 'woocommerce_rest_term_invalid', __( 'Resource does not exist.', 'woocommerce' ), array( 'status' => 404 ) );
}
return wc_rest_check_product_term_permissions( $taxonomy, $context, $term->term_id );
}
return wc_rest_check_product_term_permissions( $taxonomy, $context );
}
/**
* Get terms associated with a taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error
*/
public function get_items( $request ) {
$taxonomy = $this->get_taxonomy( $request );
$prepared_args = array(
'exclude' => $request['exclude'],
'include' => $request['include'],
'order' => $request['order'],
'orderby' => $request['orderby'],
'product' => $request['product'],
'hide_empty' => $request['hide_empty'],
'number' => $request['per_page'],
'search' => $request['search'],
'slug' => $request['slug'],
);
if ( ! empty( $request['offset'] ) ) {
$prepared_args['offset'] = $request['offset'];
} else {
$prepared_args['offset'] = ( $request['page'] - 1 ) * $prepared_args['number'];
}
$taxonomy_obj = get_taxonomy( $taxonomy );
if ( $taxonomy_obj->hierarchical && isset( $request['parent'] ) ) {
if ( 0 === $request['parent'] ) {
// Only query top-level terms.
$prepared_args['parent'] = 0;
} else {
if ( $request['parent'] ) {
$prepared_args['parent'] = $request['parent'];
}
}
}
/**
* Filter the query arguments, before passing them to `get_terms()`.
*
* Enables adding extra arguments or setting defaults for a terms
* collection request.
*
* @see https://developer.wordpress.org/reference/functions/get_terms/
*
* @param array $prepared_args Array of arguments to be
* passed to get_terms.
* @param WP_REST_Request $request The current request.
*/
$prepared_args = apply_filters( "woocommerce_rest_{$taxonomy}_query", $prepared_args, $request );
if ( ! empty( $prepared_args['product'] ) ) {
$query_result = $this->get_terms_for_product( $prepared_args, $request );
$total_terms = $this->total_terms;
} else {
$query_result = get_terms( $taxonomy, $prepared_args );
$count_args = $prepared_args;
unset( $count_args['number'] );
unset( $count_args['offset'] );
$total_terms = wp_count_terms( $taxonomy, $count_args );
// Ensure we don't return results when offset is out of bounds.
// See https://core.trac.wordpress.org/ticket/35935.
if ( $prepared_args['offset'] && $prepared_args['offset'] >= $total_terms ) {
$query_result = array();
}
// wp_count_terms can return a falsy 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 then unset for count query.
$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 );
$base = str_replace( '(?P<attribute_id>[\d]+)', $request['attribute_id'] ?? '', $this->rest_base );
$base = add_query_arg( $request->get_query_params(), rest_url( '/' . $this->namespace . '/' . $base ) );
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;
}
/**
* Create a single term for a taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Request|WP_Error
*/
public function create_item( $request ) {
$taxonomy = $this->get_taxonomy( $request );
$name = $request['name'];
$args = array();
$schema = $this->get_item_schema();
if ( ! empty( $schema['properties']['description'] ) && isset( $request['description'] ) ) {
$args['description'] = $request['description'];
}
if ( isset( $request['slug'] ) ) {
$args['slug'] = $request['slug'];
}
if ( isset( $request['parent'] ) ) {
if ( ! is_taxonomy_hierarchical( $taxonomy ) ) {
return new WP_Error( 'woocommerce_rest_taxonomy_not_hierarchical', __( 'Can not set resource parent, taxonomy is not hierarchical.', 'woocommerce' ), array( 'status' => 400 ) );
}
$args['parent'] = $request['parent'];
}
$term = wp_insert_term( $name, $taxonomy, $args );
if ( is_wp_error( $term ) ) {
$error_data = array( 'status' => 400 );
// If we're going to inform the client that the term exists,
// give them the identifier they can actually use.
$term_id = $term->get_error_data( 'term_exists' );
if ( $term_id ) {
$error_data['resource_id'] = $term_id;
}
return new WP_Error( $term->get_error_code(), $term->get_error_message(), $error_data );
}
$term = get_term( $term['term_id'], $taxonomy );
$this->update_additional_fields_for_object( $term, $request );
// Add term data.
$meta_fields = $this->update_term_meta_fields( $term, $request );
if ( is_wp_error( $meta_fields ) ) {
wp_delete_term( $term->term_id, $taxonomy );
return $meta_fields;
}
/**
* Fires after a single term is created or updated via the REST API.
*
* @param WP_Term $term Inserted Term object.
* @param WP_REST_Request $request Request object.
* @param boolean $creating True when creating term, false when updating.
*/
do_action( "woocommerce_rest_insert_{$taxonomy}", $term, $request, true );
$request->set_param( 'context', 'edit' );
$response = $this->prepare_item_for_response( $term, $request );
$response = rest_ensure_response( $response );
$response->set_status( 201 );
$base = '/' . $this->namespace . '/' . $this->rest_base;
if ( ! empty( $request['attribute_id'] ) ) {
$base = str_replace( '(?P<attribute_id>[\d]+)', (int) $request['attribute_id'], $base );
}
$response->header( 'Location', rest_url( $base . '/' . $term->term_id ) );
return $response;
}
/**
* Get a single term from a taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Request|WP_Error
*/
public function get_item( $request ) {
$taxonomy = $this->get_taxonomy( $request );
$term = get_term( (int) $request['id'], $taxonomy );
if ( is_wp_error( $term ) ) {
return $term;
}
$response = $this->prepare_item_for_response( $term, $request );
return rest_ensure_response( $response );
}
/**
* Update a single term from a taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Request|WP_Error
*/
public function update_item( $request ) {
$taxonomy = $this->get_taxonomy( $request );
$term = get_term( (int) $request['id'], $taxonomy );
$schema = $this->get_item_schema();
$prepared_args = array();
if ( isset( $request['name'] ) ) {
$prepared_args['name'] = $request['name'];
}
if ( ! empty( $schema['properties']['description'] ) && isset( $request['description'] ) ) {
$prepared_args['description'] = $request['description'];
}
if ( isset( $request['slug'] ) ) {
$prepared_args['slug'] = $request['slug'];
}
if ( isset( $request['parent'] ) ) {
if ( ! is_taxonomy_hierarchical( $taxonomy ) ) {
return new WP_Error( 'woocommerce_rest_taxonomy_not_hierarchical', __( 'Can not set resource parent, taxonomy is not hierarchical.', 'woocommerce' ), array( 'status' => 400 ) );
}
$prepared_args['parent'] = $request['parent'];
}
// Only update the term if we haz something to update.
if ( ! empty( $prepared_args ) ) {
$update = wp_update_term( $term->term_id, $term->taxonomy, $prepared_args );
if ( is_wp_error( $update ) ) {
return $update;
}
}
$term = get_term( (int) $request['id'], $taxonomy );
$this->update_additional_fields_for_object( $term, $request );
// Update term data.
$meta_fields = $this->update_term_meta_fields( $term, $request );
if ( is_wp_error( $meta_fields ) ) {
return $meta_fields;
}
/**
* Fires after a single term is created or updated via the REST API.
*
* @param WP_Term $term Inserted Term object.
* @param WP_REST_Request $request Request object.
* @param boolean $creating True when creating term, false when updating.
*/
do_action( "woocommerce_rest_insert_{$taxonomy}", $term, $request, false );
$request->set_param( 'context', 'edit' );
$response = $this->prepare_item_for_response( $term, $request );
return rest_ensure_response( $response );
}
/**
* Delete a single term from a taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response|WP_Error
*/
public function delete_item( $request ) {
$taxonomy = $this->get_taxonomy( $request );
$force = isset( $request['force'] ) ? (bool) $request['force'] : false;
// We don't support trashing for this type, error out.
if ( ! $force ) {
return new WP_Error( 'woocommerce_rest_trash_not_supported', __( 'Resource does not support trashing.', 'woocommerce' ), array( 'status' => 501 ) );
}
$term = get_term( (int) $request['id'], $taxonomy );
// Get default category id.
$default_category_id = absint( get_option( 'default_product_cat', 0 ) );
// Prevent deleting the default product category.
if ( $default_category_id === (int) $request['id'] ) {
return new WP_Error( 'woocommerce_rest_cannot_delete', __( 'Default product category cannot be deleted.', 'woocommerce' ), array( 'status' => 500 ) );
}
$request->set_param( 'context', 'edit' );
$response = $this->prepare_item_for_response( $term, $request );
$retval = wp_delete_term( $term->term_id, $term->taxonomy );
if ( ! $retval ) {
return new WP_Error( 'woocommerce_rest_cannot_delete', __( 'The resource cannot be deleted.', 'woocommerce' ), array( 'status' => 500 ) );
}
// Schedule action to assign default category.
wc_get_container()->get( AssignDefaultCategory::class )->schedule_action();
/**
* Fires after a single term is deleted via the REST API.
*
* @param WP_Term $term The deleted term.
* @param WP_REST_Response $response The response data.
* @param WP_REST_Request $request The request sent to the API.
*/
do_action( "woocommerce_rest_delete_{$taxonomy}", $term, $response, $request );
return $response;
}
/**
* Prepare links for the request.
*
* @param object $term Term object.
* @param WP_REST_Request $request Full details about the request.
* @return array Links for the given term.
*/
protected function prepare_links( $term, $request ) {
$base = '/' . $this->namespace . '/' . $this->rest_base;
if ( ! empty( $request['attribute_id'] ) ) {
$base = str_replace( '(?P<attribute_id>[\d]+)', (int) $request['attribute_id'], $base );
}
$links = array(
'self' => array(
'href' => rest_url( trailingslashit( $base ) . $term->term_id ),
),
'collection' => array(
'href' => rest_url( $base ),
),
);
if ( $term->parent ) {
$parent_term = get_term( (int) $term->parent, $term->taxonomy );
if ( $parent_term ) {
$links['up'] = array(
'href' => rest_url( trailingslashit( $base ) . $parent_term->term_id ),
);
}
}
return $links;
}
/**
* Update term meta fields.
*
* @param WP_Term $term Term object.
* @param WP_REST_Request $request Full details about the request.
* @return bool|WP_Error
*/
protected function update_term_meta_fields( $term, $request ) {
return true;
}
/**
* Get the terms attached to a product.
*
* This is an alternative to `get_terms()` that uses `get_the_terms()`
* instead, which hits the object cache. There are a few things not
* supported, notably `include`, `exclude`. In `self::get_items()` these
* are instead treated as a full query.
*
* @param array $prepared_args Arguments for `get_terms()`.
* @param WP_REST_Request $request Full details about the request.
* @return array List of term objects. (Total count in `$this->total_terms`).
*/
protected function get_terms_for_product( $prepared_args, $request ) {
$taxonomy = $this->get_taxonomy( $request );
$query_result = get_the_terms( $prepared_args['product'], $taxonomy );
if ( empty( $query_result ) ) {
$this->total_terms = 0;
return array();
}
// get_items() verifies that we don't have `include` set, and default.
// ordering is by `name`.
if ( ! in_array( $prepared_args['orderby'], array( 'name', 'none', 'include' ), true ) ) {
switch ( $prepared_args['orderby'] ) {
case 'id':
$this->sort_column = 'term_id';
break;
case 'slug':
case 'term_group':
case 'description':
case 'count':
$this->sort_column = $prepared_args['orderby'];
break;
}
usort( $query_result, array( $this, 'compare_terms' ) );
}
if ( strtolower( $prepared_args['order'] ) !== 'asc' ) {
$query_result = array_reverse( $query_result );
}
// Pagination.
$this->total_terms = count( $query_result );
$query_result = array_slice( $query_result, $prepared_args['offset'], $prepared_args['number'] );
return $query_result;
}
/**
* Comparison function for sorting terms by a column.
*
* Uses `$this->sort_column` to determine field to sort by.
*
* @param stdClass $left Term object.
* @param stdClass $right Term object.
* @return int <0 if left is higher "priority" than right, 0 if equal, >0 if right is higher "priority" than left.
*/
protected function compare_terms( $left, $right ) {
$col = $this->sort_column;
$left_val = $left->$col;
$right_val = $right->$col;
if ( is_int( $left_val ) && is_int( $right_val ) ) {
return $left_val - $right_val;
}
return strcmp( $left_val, $right_val );
}
/**
* Get the query params for collections
*
* @return array
*/
public function get_collection_params() {
$params = parent::get_collection_params();
$params['context']['default'] = 'view';
$params['exclude'] = array(
'description' => __( 'Ensure result set excludes specific IDs.', 'woocommerce' ),
'type' => 'array',
'items' => array(
'type' => 'integer',
),
'default' => array(),
'sanitize_callback' => 'wp_parse_id_list',
);
$params['include'] = array(
'description' => __( 'Limit result set to specific ids.', 'woocommerce' ),
'type' => 'array',
'items' => array(
'type' => 'integer',
),
'default' => array(),
'sanitize_callback' => 'wp_parse_id_list',
);
$params['offset'] = array(
'description' => __( 'Offset the result set by a specific number of items. Applies to hierarchical taxonomies only.', 'woocommerce' ),
'type' => 'integer',
'sanitize_callback' => 'absint',
'validate_callback' => 'rest_validate_request_arg',
);
$params['order'] = array(
'description' => __( 'Order sort attribute ascending or descending.', 'woocommerce' ),
'type' => 'string',
'sanitize_callback' => 'sanitize_key',
'default' => 'asc',
'enum' => array(
'asc',
'desc',
),
'validate_callback' => 'rest_validate_request_arg',
);
$params['orderby'] = array(
'description' => __( 'Sort collection by resource attribute.', 'woocommerce' ),
'type' => 'string',
'sanitize_callback' => 'sanitize_key',
'default' => 'name',
'enum' => array(
'id',
'include',
'name',
'slug',
'term_group',
'description',
'count',
),
'validate_callback' => 'rest_validate_request_arg',
);
$params['hide_empty'] = array(
'description' => __( 'Whether to hide resources not assigned to any products.', 'woocommerce' ),
'type' => 'boolean',
'default' => false,
'validate_callback' => 'rest_validate_request_arg',
);
$params['parent'] = array(
'description' => __( 'Limit result set to resources assigned to a specific parent. Applies to hierarchical taxonomies only.', 'woocommerce' ),
'type' => 'integer',
'sanitize_callback' => 'absint',
'validate_callback' => 'rest_validate_request_arg',
);
$params['product'] = array(
'description' => __( 'Limit result set to resources assigned to a specific product.', 'woocommerce' ),
'type' => 'integer',
'default' => null,
'validate_callback' => 'rest_validate_request_arg',
);
$params['slug'] = array(
'description' => __( 'Limit result set to resources with a specific slug.', 'woocommerce' ),
'type' => 'string',
'validate_callback' => 'rest_validate_request_arg',
);
return $params;
}
/**
* Get taxonomy.
*
* @param WP_REST_Request $request Full details about the request.
* @return int|WP_Error
*/
protected function get_taxonomy( $request ) {
$attribute_id = $request['attribute_id'];
if ( empty( $attribute_id ) ) {
return $this->taxonomy;
}
if ( isset( $this->taxonomies_by_id[ $attribute_id ] ) ) {
return $this->taxonomies_by_id[ $attribute_id ];
}
$taxonomy = WC()->call_function( 'wc_attribute_taxonomy_name_by_id', (int) $request['attribute_id'] );
if ( ! empty( $taxonomy ) ) {
$this->taxonomy = $taxonomy;
$this->taxonomies_by_id[ $attribute_id ] = $taxonomy;
}
return $taxonomy;
}
}
