Add new base controller file and tests. Use patternProperties to acco…

…mmodate dynamic post status keys

src/wp-config-sample.php

@@ -0,0 +1,96 @@
+<?php
+/**
+ * The base configuration for WordPress
+ *
+ * The wp-config.php creation script uses this file during the installation.
+ * You don't have to use the website, you can copy this file to "wp-config.php"
+ * and fill in the values.
+ *
+ * This file contains the following configurations:
+ *
+ * * Database settings
+ * * Secret keys
+ * * Database table prefix
+ * * ABSPATH
+ *
+ * @link https://developer.wordpress.org/advanced-administration/wordpress/wp-config/
+ *
+ * @package WordPress
+ */
+
+// ** Database settings - You can get this info from your web host ** //
+/** The name of the database for WordPress */
+define( 'DB_NAME', 'database_name_here' );
+
+/** Database username */
+define( 'DB_USER', 'username_here' );
+
+/** Database password */
+define( 'DB_PASSWORD', 'password_here' );
+
+/** Database hostname */
+define( 'DB_HOST', 'localhost' );
+
+/** Database charset to use in creating database tables. */
+define( 'DB_CHARSET', 'utf8' );
+
+/** The database collate type. Don't change this if in doubt. */
+define( 'DB_COLLATE', '' );
+
+/**#@+
+ * Authentication unique keys and salts.
+ *
+ * Change these to different unique phrases! You can generate these using
+ * the {@link https://api.wordpress.org/secret-key/1.1/salt/ WordPress.org secret-key service}.
+ *
+ * You can change these at any point in time to invalidate all existing cookies.
+ * This will force all users to have to log in again.
+ *
+ * @since 2.6.0
+ */
+define( 'AUTH_KEY',         'put your unique phrase here' );
+define( 'SECURE_AUTH_KEY',  'put your unique phrase here' );
+define( 'LOGGED_IN_KEY',    'put your unique phrase here' );
+define( 'NONCE_KEY',        'put your unique phrase here' );
+define( 'AUTH_SALT',        'put your unique phrase here' );
+define( 'SECURE_AUTH_SALT', 'put your unique phrase here' );
+define( 'LOGGED_IN_SALT',   'put your unique phrase here' );
+define( 'NONCE_SALT',       'put your unique phrase here' );
+
+/**#@-*/
+
+/**
+ * WordPress database table prefix.
+ *
+ * You can have multiple installations in one database if you give each
+ * a unique prefix. Only numbers, letters, and underscores please!
+ */
+$table_prefix = 'wp_';
+
+/**
+ * For developers: WordPress debugging mode.
+ *
+ * Change this to true to enable the display of notices during development.
+ * It is strongly recommended that plugin and theme developers use WP_DEBUG
+ * in their development environments.
+ *
+ * For information on other constants that can be used for debugging,
+ * visit the documentation.
+ *
+ * @link https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/
+ */
+define( 'WP_DEBUG', false );
+
+/* Add any custom values between this line and the "stop editing" line. */
+
+
+
+/* That's all, stop editing! Happy publishing. */
+
+/** Absolute path to the WordPress directory. */
+if ( ! defined( 'ABSPATH' ) ) {
+	define( 'ABSPATH', __DIR__ . '/' );
+}
+
+/** Sets up WordPress vars and included files. */
+require_once ABSPATH . 'wp-settings.php';

src/wp-includes/rest-api.php

@@ -297,6 +297,10 @@ function create_initial_rest_routes() {
 	$controller = new WP_REST_Post_Statuses_Controller();
 	$controller->register_routes();
 
+	// Post counts.
+	$controller = new WP_REST_Post_Counts_Controller();
+	$controller->register_routes();
+
 	// Taxonomies.
 	$controller = new WP_REST_Taxonomies_Controller();
 	$controller->register_routes();

src/wp-includes/rest-api/endpoints/class-wp-rest-post-counts-controller.php

@@ -0,0 +1,179 @@
+<?php
+/**
+ * REST API: WP_REST_Post_Counts_Controller class
+ *
+ * @since 6.8.0
+ *
+ * @package WordPress
+ * @subpackage REST_API
+ */
+
+/**
+ * Core class used to return post counts by post type via the REST API.
+ *
+ * @since 6.8.0
+ *
+ * @see WP_REST_Controller
+ */
+class WP_REST_Post_Counts_Controller extends WP_REST_Controller {
+
+	/**
+	 * Constructor.
+	 */
+	public function __construct() {
+		$this->namespace = 'wp/v2';
+		$this->rest_base = 'counts';
+	}
+
+	/**
+	 * Registers the routes for post counts.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @see register_rest_route()
+	 */
+	public function register_routes() {
+		register_rest_route(
+			$this->namespace,
+			'/' . $this->rest_base . '/(?P<post_type>[\w-]+)',
+			array(
+				'args'   => array(
+					'post_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' => array( $this, 'get_item_permissions_check' ),
+					'args'                => array(
+						'context' => $this->get_context_param( array( 'default' => 'view' ) ),
+					),
+				),
+				'schema' => array( $this, 'get_public_item_schema' ),
+			)
+		);
+	}
+
+	/**
+	 * Checks if a given request has access to read post counts.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @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_item_permissions_check( $request ) {
+		$post_type = get_post_type_object( $request['post_type'] );
+
+		if ( ! $post_type ) {
+			return new WP_Error(
+				'rest_invalid_post_type',
+				__( 'Invalid post type.' ),
+				array( 'status' => 404 )
+			);
+		}
+
+		if ( ! current_user_can( $post_type->cap->read ) ) {
+			return new WP_Error(
+				'rest_cannot_read',
+				__( 'Sorry, you are not allowed to read post counts for this post type.' ),
+				array( 'status' => rest_authorization_required_code() )
+			);
+		}
+
+		return true;
+	}
+
+	/**
+	 * Retrieves post counts for a specific post type.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @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 ) {
+		$post_type = $request['post_type'];
+		$counts    = wp_count_posts( $post_type );
+		$data      = $this->prepare_item_for_response( $counts, $request );
+
+		return rest_ensure_response( $data );
+	}
+
+	/**
+	 * Prepares post counts for response.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @param object          $item    Post counts data.
+	 * @param WP_REST_Request $request Request object.
+	 * @return WP_REST_Response Response object.
+	 */
+	public function prepare_item_for_response( $item, $request ) {
+		$data = array();
+
+		if ( ! empty( $item ) ) {
+			/*
+			 * The fields comprise all non-internal post statuses,
+			 * including any custom statuses that may be registered.
+			 * 'trash' is an exception, so if it exists, it is added separately.
+			 */
+			$post_stati = get_post_stati( array( 'internal' => false ) );
+
+			if ( get_post_status_object( 'trash' ) ) {
+				$post_stati[] = 'trash';
+			}
+			// Include all public statuses in the response if there is a count.
+			foreach ( $post_stati as $status ) {
+				if ( isset( $item->$status ) ) {
+					$data[ $status ] = (int) $item->$status;
+				}
+			}
+		}
+
+		$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
+		$data    = $this->add_additional_fields_to_object( $data, $request );
+		$data    = $this->filter_response_by_context( $data, $context );
+
+		return rest_ensure_response( $data );
+	}
+
+	/**
+	 * Retrieves the post counts schema, conforming to JSON Schema.
+	 *
+	 * @since 6.8.0
+	 *
+	 * @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-counts',
+			'type'                 => 'object',
+			/*
+			 * Use a pattern matcher for post status keys.
+			 * This allows for custom post statuses to be included,
+			 * which can be registered after the schema is generated.
+			 */
+			'patternProperties'    => array(
+				'^\w+$' => array(
+					'description' => __( 'The number of posts for a given status.' ),
+					'type'        => 'integer',
+					'context'     => array( 'view', 'edit', 'embed' ),
+					'readonly'    => true,
+				),
+			),
+			'additionalProperties' => false,
+		);
+
+		$this->schema = $schema;
+
+		return $this->add_additional_fields_schema( $this->schema );
+	}
+}

src/wp-settings.php

@@ -291,6 +291,7 @@
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-global-styles-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-post-types-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-post-statuses-controller.php';
+require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-post-counts-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-revisions-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-global-styles-revisions-controller.php';
 require ABSPATH . WPINC . '/rest-api/endpoints/class-wp-rest-template-revisions-controller.php';