WordPress/wp-includes/rest-api/endpoints/class-wp-rest-taxonomies-controller.php
Gary Pendergast fd6f50e86f REST API: Tweak permission checks for taxonomy and term endpoints
To match behaviour in the Classic Editor, we need to slightly loosen permissions on taxonomy and term endpoints. This allows users to create terms to assign to a post that they're editing.

Props danielbachhuber.
Fixes #44096.


Built from https://develop.svn.wordpress.org/trunk@43440


git-svn-id: http://core.svn.wordpress.org/trunk@43267 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-07-13 04:24:25 +00:00

393 lines
12 KiB
PHP

<?php
/**
* REST API: WP_REST_Taxonomies_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 4.7.0
*/
/**
* Core class used to manage taxonomies via the REST API.
*
* @since 4.7.0
*
* @see WP_REST_Controller
*/
class WP_REST_Taxonomies_Controller extends WP_REST_Controller {
/**
* Constructor.
*
* @since 4.7.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'taxonomies';
}
/**
* Registers the routes for the objects of the controller.
*
* @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(),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
register_rest_route(
$this->namespace, '/' . $this->rest_base . '/(?P<taxonomy>[\w-]+)', array(
'args' => array(
'taxonomy' => array(
'description' => __( 'An alphanumeric identifier for the taxonomy.' ),
'type' => 'string',
),
),
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' ) ),
),
),
'schema' => array( $this, 'get_public_item_schema' ),
)
);
}
/**
* Checks whether a given request has permission to read taxonomies.
*
* @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, WP_Error object otherwise.
*/
public function get_items_permissions_check( $request ) {
if ( 'edit' === $request['context'] ) {
if ( ! empty( $request['type'] ) ) {
$taxonomies = get_object_taxonomies( $request['type'], 'objects' );
} else {
$taxonomies = get_taxonomies( '', 'objects' );
}
foreach ( $taxonomies as $taxonomy ) {
if ( ! empty( $taxonomy->show_in_rest ) && current_user_can( $taxonomy->cap->assign_terms ) ) {
return true;
}
}
return new WP_Error( 'rest_cannot_view', __( 'Sorry, you are not allowed to manage terms in this taxonomy.' ), array( 'status' => rest_authorization_required_code() ) );
}
return true;
}
/**
* Retrieves all public taxonomies.
*
* @since 4.7.0
*
* @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 get_items( $request ) {
// Retrieve the list of registered collection query parameters.
$registered = $this->get_collection_params();
if ( isset( $registered['type'] ) && ! empty( $request['type'] ) ) {
$taxonomies = get_object_taxonomies( $request['type'], 'objects' );
} else {
$taxonomies = get_taxonomies( '', 'objects' );
}
$data = array();
foreach ( $taxonomies as $tax_type => $value ) {
if ( empty( $value->show_in_rest ) || ( 'edit' === $request['context'] && ! current_user_can( $value->cap->assign_terms ) ) ) {
continue;
}
$tax = $this->prepare_item_for_response( $value, $request );
$tax = $this->prepare_response_for_collection( $tax );
$data[ $tax_type ] = $tax;
}
if ( empty( $data ) ) {
// Response should still be returned as a JSON object when it is empty.
$data = (object) $data;
}
return rest_ensure_response( $data );
}
/**
* Checks if a given request has access to a taxonomy.
*
* @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 false or WP_Error object.
*/
public function get_item_permissions_check( $request ) {
$tax_obj = get_taxonomy( $request['taxonomy'] );
if ( $tax_obj ) {
if ( empty( $tax_obj->show_in_rest ) ) {
return false;
}
if ( 'edit' === $request['context'] && ! current_user_can( $tax_obj->cap->assign_terms ) ) {
return new WP_Error( 'rest_forbidden_context', __( 'Sorry, you are not allowed to manage terms in this taxonomy.' ), array( 'status' => rest_authorization_required_code() ) );
}
}
return true;
}
/**
* Retrieves a specific 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 ) {
$tax_obj = get_taxonomy( $request['taxonomy'] );
if ( empty( $tax_obj ) ) {
return new WP_Error( 'rest_taxonomy_invalid', __( 'Invalid taxonomy.' ), array( 'status' => 404 ) );
}
$data = $this->prepare_item_for_response( $tax_obj, $request );
return rest_ensure_response( $data );
}
/**
* Prepares a taxonomy object for serialization.
*
* @since 4.7.0
*
* @param stdClass $taxonomy Taxonomy data.
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $taxonomy, $request ) {
$base = ! empty( $taxonomy->rest_base ) ? $taxonomy->rest_base : $taxonomy->name;
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( in_array( 'name', $fields, true ) ) {
$data['name'] = $taxonomy->label;
}
if ( in_array( 'slug', $fields, true ) ) {
$data['slug'] = $taxonomy->name;
}
if ( in_array( 'capabilities', $fields, true ) ) {
$data['capabilities'] = $taxonomy->cap;
}
if ( in_array( 'description', $fields, true ) ) {
$data['description'] = $taxonomy->description;
}
if ( in_array( 'labels', $fields, true ) ) {
$data['labels'] = $taxonomy->labels;
}
if ( in_array( 'types', $fields, true ) ) {
$data['types'] = $taxonomy->object_type;
}
if ( in_array( 'show_cloud', $fields, true ) ) {
$data['show_cloud'] = $taxonomy->show_tagcloud;
}
if ( in_array( 'hierarchical', $fields, true ) ) {
$data['hierarchical'] = $taxonomy->hierarchical;
}
if ( in_array( 'rest_base', $fields, true ) ) {
$data['rest_base'] = $base;
}
if ( in_array( 'visibility', $fields, true ) ) {
$data['visibility'] = array(
'public' => (bool) $taxonomy->public,
'publicly_queryable' => (bool) $taxonomy->publicly_queryable,
'show_admin_column' => (bool) $taxonomy->show_admin_column,
'show_in_nav_menus' => (bool) $taxonomy->show_in_nav_menus,
'show_in_quick_edit' => (bool) $taxonomy->show_in_quick_edit,
'show_ui' => (bool) $taxonomy->show_ui,
);
}
$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
$data = $this->add_additional_fields_to_object( $data, $request );
$data = $this->filter_response_by_context( $data, $context );
// Wrap the data in a response object.
$response = rest_ensure_response( $data );
$response->add_links(
array(
'collection' => array(
'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
),
'https://api.w.org/items' => array(
'href' => rest_url( sprintf( 'wp/v2/%s', $base ) ),
),
)
);
/**
* Filters a taxonomy returned from the REST API.
*
* Allows modification of the taxonomy data right before it is returned.
*
* @since 4.7.0
*
* @param WP_REST_Response $response The response object.
* @param object $item The original taxonomy object.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_taxonomy', $response, $taxonomy, $request );
}
/**
* Retrieves the taxonomy's schema, conforming to JSON Schema.
*
* @since 4.7.0
*
* @return array Item schema data.
*/
public function get_item_schema() {
$schema = array(
'$schema' => 'http://json-schema.org/draft-04/schema#',
'title' => 'taxonomy',
'type' => 'object',
'properties' => array(
'capabilities' => array(
'description' => __( 'All capabilities used by the taxonomy.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
),
'description' => array(
'description' => __( 'A human-readable description of the taxonomy.' ),
'type' => 'string',
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'hierarchical' => array(
'description' => __( 'Whether or not the taxonomy should have children.' ),
'type' => 'boolean',
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'labels' => array(
'description' => __( 'Human-readable labels for the taxonomy for various contexts.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
),
'name' => array(
'description' => __( 'The title for the taxonomy.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'slug' => array(
'description' => __( 'An alphanumeric identifier for the taxonomy.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'show_cloud' => array(
'description' => __( 'Whether or not the term cloud should be displayed.' ),
'type' => 'boolean',
'context' => array( 'edit' ),
'readonly' => true,
),
'types' => array(
'description' => __( 'Types associated with the taxonomy.' ),
'type' => 'array',
'items' => array(
'type' => 'string',
),
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'rest_base' => array(
'description' => __( 'REST base route for the taxonomy.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'visibility' => array(
'description' => __( 'The visibility settings for the taxonomy.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
'properties' => array(
'public' => array(
'description' => __( 'Whether a taxonomy is intended for use publicly either via the admin interface or by front-end users.' ),
'type' => 'boolean',
),
'publicly_queryable' => array(
'description' => __( 'Whether the taxonomy is publicly queryable.' ),
'type' => 'boolean',
),
'show_ui' => array(
'description' => __( 'Whether to generate a default UI for managing this taxonomy.' ),
'type' => 'boolean',
),
'show_admin_column' => array(
'description' => __( 'Whether to allow automatic creation of taxonomy columns on associated post-types table.' ),
'type' => 'boolean',
),
'show_in_nav_menus' => array(
'description' => __( 'Whether to make the taxonomy available for selection in navigation menus.' ),
'type' => 'boolean',
),
'show_in_quick_edit' => array(
'description' => __( 'Whether to show the taxonomy in the quick/bulk edit panel.' ),
'type' => 'boolean',
),
),
),
),
);
return $this->add_additional_fields_schema( $schema );
}
/**
* Retrieves the query params for collections.
*
* @since 4.7.0
*
* @return array Collection parameters.
*/
public function get_collection_params() {
$new_params = array();
$new_params['context'] = $this->get_context_param( array( 'default' => 'view' ) );
$new_params['type'] = array(
'description' => __( 'Limit results to taxonomies associated with a specific post type.' ),
'type' => 'string',
);
return $new_params;
}
}