/**
* REST API: WP_REST_Post_Types_Controller class
*
* @package WordPress
* @subpackage REST_API
* @since 4.7.0
*/
/**
* Core class to access post types via the REST API.
*
* @since 4.7.0
*
* @see WP_REST_Controller
*/
class WP_REST_Post_Types_Controller extends WP_REST_Controller {
/**
* Constructor.
*
* @since 4.7.0
*/
public function __construct() {
$this->namespace = 'wp/v2';
$this->rest_base = 'types';
}
/**
* Registers the routes for post types.
*
* @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[\w-]+)',
array(
'args' => array(
'type' => array(
'description' => __( 'An alphanumeric identifier for the post type.' ),
'type' => 'string',
),
),
array(
'methods' => WP_REST_Server::READABLE,
'callback' => array( $this, 'get_item' ),
'permission_callback' => '__return_true',
'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 types.
*
* @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'] ) {
$types = get_post_types( array( 'show_in_rest' => true ), 'objects' );
foreach ( $types as $type ) {
if ( current_user_can( $type->cap->edit_posts ) ) {
return true;
}
}
return new WP_Error(
'rest_cannot_view',
__( 'Sorry, you are not allowed to edit posts in this post type.' ),
array( 'status' => rest_authorization_required_code() )
);
}
return true;
}
/**
* Retrieves all public post types.
*
* @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 ) {
$data = array();
$types = get_post_types( array( 'show_in_rest' => true ), 'objects' );
foreach ( $types as $type ) {
if ( 'edit' === $request['context'] && ! current_user_can( $type->cap->edit_posts ) ) {
continue;
}
$post_type = $this->prepare_item_for_response( $type, $request );
$data[ $type->name ] = $this->prepare_response_for_collection( $post_type );
}
return rest_ensure_response( $data );
}
/**
* Retrieves a specific post type.
*
* @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 ) {
$obj = get_post_type_object( $request['type'] );
if ( empty( $obj ) ) {
return new WP_Error(
'rest_type_invalid',
__( 'Invalid post type.' ),
array( 'status' => 404 )
);
}
if ( empty( $obj->show_in_rest ) ) {
return new WP_Error(
'rest_cannot_read_type',
__( 'Cannot view post type.' ),
array( 'status' => rest_authorization_required_code() )
);
}
if ( 'edit' === $request['context'] && ! current_user_can( $obj->cap->edit_posts ) ) {
return new WP_Error(
'rest_forbidden_context',
__( 'Sorry, you are not allowed to edit posts in this post type.' ),
array( 'status' => rest_authorization_required_code() )
);
}
$data = $this->prepare_item_for_response( $obj, $request );
return rest_ensure_response( $data );
}
/**
* Prepares a post type object for serialization.
*
* @since 4.7.0
* @since 5.9.0 Renamed `$post_type` to `$item` to match parent class for PHP 8 named parameter support.
*
* @param WP_Post_Type $item Post type object.
* @param WP_REST_Request $request Full details about the request.
* @return WP_REST_Response Response object.
*/
public function prepare_item_for_response( $item, $request ) {
// Restores the more descriptive, specific name for use within this method.
$post_type = $item;
$taxonomies = wp_list_filter( get_object_taxonomies( $post_type->name, 'objects' ), array( 'show_in_rest' => true ) );
$taxonomies = wp_list_pluck( $taxonomies, 'name' );
$base = ! empty( $post_type->rest_base ) ? $post_type->rest_base : $post_type->name;
$namespace = ! empty( $post_type->rest_namespace ) ? $post_type->rest_namespace : 'wp/v2';
$supports = get_all_post_type_supports( $post_type->name );
$fields = $this->get_fields_for_response( $request );
$data = array();
if ( rest_is_field_included( 'capabilities', $fields ) ) {
$data['capabilities'] = $post_type->cap;
}
if ( rest_is_field_included( 'description', $fields ) ) {
$data['description'] = $post_type->description;
}
if ( rest_is_field_included( 'hierarchical', $fields ) ) {
$data['hierarchical'] = $post_type->hierarchical;
}
if ( rest_is_field_included( 'has_archive', $fields ) ) {
$data['has_archive'] = $post_type->has_archive;
}
if ( rest_is_field_included( 'visibility', $fields ) ) {
$data['visibility'] = array(
'show_in_nav_menus' => (bool) $post_type->show_in_nav_menus,
'show_ui' => (bool) $post_type->show_ui,
);
}
if ( rest_is_field_included( 'viewable', $fields ) ) {
$data['viewable'] = is_post_type_viewable( $post_type );
}
if ( rest_is_field_included( 'labels', $fields ) ) {
$data['labels'] = $post_type->labels;
}
if ( rest_is_field_included( 'name', $fields ) ) {
$data['name'] = $post_type->label;
}
if ( rest_is_field_included( 'slug', $fields ) ) {
$data['slug'] = $post_type->name;
}
if ( rest_is_field_included( 'icon', $fields ) ) {
$data['icon'] = $post_type->menu_icon;
}
if ( rest_is_field_included( 'supports', $fields ) ) {
$data['supports'] = $supports;
}
if ( rest_is_field_included( 'taxonomies', $fields ) ) {
$data['taxonomies'] = array_values( $taxonomies );
}
if ( rest_is_field_included( 'rest_base', $fields ) ) {
$data['rest_base'] = $base;
}
if ( rest_is_field_included( 'rest_namespace', $fields ) ) {
$data['rest_namespace'] = $namespace;
}
if ( rest_is_field_included( 'template', $fields ) ) {
$data['template'] = $post_type->template ?? array();
}
if ( rest_is_field_included( 'template_lock', $fields ) ) {
$data['template_lock'] = ! empty( $post_type->template_lock ) ? $post_type->template_lock : false;
}
$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 );
if ( rest_is_field_included( '_links', $fields ) || rest_is_field_included( '_embedded', $fields ) ) {
$response->add_links( $this->prepare_links( $post_type ) );
}
/**
* Filters a post type returned from the REST API.
*
* Allows modification of the post type data right before it is returned.
*
* @since 4.7.0
*
* @param WP_REST_Response $response The response object.
* @param WP_Post_Type $post_type The original post type object.
* @param WP_REST_Request $request Request used to generate the response.
*/
return apply_filters( 'rest_prepare_post_type', $response, $post_type, $request );
}
/**
* Prepares links for the request.
*
* @since 6.1.0
*
* @param WP_Post_Type $post_type The post type.
* @return array Links for the given post type.
*/
protected function prepare_links( $post_type ) {
return array(
'collection' => array(
'href' => rest_url( sprintf( '%s/%s', $this->namespace, $this->rest_base ) ),
),
'https://api.w.org/items' => array(
'href' => rest_url( rest_get_route_for_post_type_items( $post_type->name ) ),
),
);
}
/**
* Retrieves the post type's schema, conforming to JSON Schema.
*
* @since 4.7.0
* @since 4.8.0 The `supports` property was added.
* @since 5.9.0 The `visibility` and `rest_namespace` properties were added.
* @since 6.1.0 The `icon` property was added.
*
* @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' => 'type',
'type' => 'object',
'properties' => array(
'capabilities' => array(
'description' => __( 'All capabilities used by the post type.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
),
'description' => array(
'description' => __( 'A human-readable description of the post type.' ),
'type' => 'string',
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'hierarchical' => array(
'description' => __( 'Whether or not the post type should have children.' ),
'type' => 'boolean',
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'viewable' => array(
'description' => __( 'Whether or not the post type can be viewed.' ),
'type' => 'boolean',
'context' => array( 'edit' ),
'readonly' => true,
),
'labels' => array(
'description' => __( 'Human-readable labels for the post type for various contexts.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
),
'name' => array(
'description' => __( 'The title for the post type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'slug' => array(
'description' => __( 'An alphanumeric identifier for the post type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'supports' => array(
'description' => __( 'All features, supported by the post type.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
),
'has_archive' => array(
'description' => __( 'If the value is a string, the value will be used as the archive slug. If the value is false the post type has no archive.' ),
'type' => array( 'string', 'boolean' ),
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'taxonomies' => array(
'description' => __( 'Taxonomies associated with post type.' ),
'type' => 'array',
'items' => array(
'type' => 'string',
),
'context' => array( 'view', 'edit' ),
'readonly' => true,
),
'rest_base' => array(
'description' => __( 'REST base route for the post type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'rest_namespace' => array(
'description' => __( 'REST route\'s namespace for the post type.' ),
'type' => 'string',
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'visibility' => array(
'description' => __( 'The visibility settings for the post type.' ),
'type' => 'object',
'context' => array( 'edit' ),
'readonly' => true,
'properties' => array(
'show_ui' => array(
'description' => __( 'Whether to generate a default UI for managing this post type.' ),
'type' => 'boolean',
),
'show_in_nav_menus' => array(
'description' => __( 'Whether to make the post type available for selection in navigation menus.' ),
'type' => 'boolean',
),
),
),
'icon' => array(
'description' => __( 'The icon for the post type.' ),
'type' => array( 'string', 'null' ),
'context' => array( 'view', 'edit', 'embed' ),
'readonly' => true,
),
'template' => array(
'type' => array( 'array' ),
'description' => __( 'The block template associated with the post type.' ),
'readonly' => true,
'context' => array( 'view', 'edit', 'embed' ),
),
'template_lock' => array(
'type' => array( 'string', 'boolean' ),
'enum' => array( 'all', 'insert', 'contentOnly', false ),
'description' => __( 'The template_lock associated with the post type, or false if none.' ),
'readonly' => true,
'context' => array( 'view', 'edit', 'embed' ),
),
),
);
$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() {
return array(
'context' => $this->get_context_param( array( 'default' => 'view' ) ),
);
}
}
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