get( 'dir' ) . '/upgrades', $container->get( 'db_version' ), $container->get( 'version' ) ); $did_upgrade = $upgrade_handler->maybe_upgrade(); if ( $did_upgrade ) { update_option( 'hide_from_search_plugin_version', $container->get( 'version' ), true ); } } /** * Hide page/post from search engines. */ public static function hideFromSearchEngines() { if ( is_admin() || ! get_option( 'blog_public' ) ) { return; } if ( (bool) get_post_meta( get_the_ID(), '_hide_from_search_engines', true ) ) { echo ''; } } /** * Filter the 'where' clause to exclude any hidden posts from search * * @param string $where The SQL `where` clause. * * @return string */ public static function hideFromWordPressSearch( $where ) { global $wpdb; if ( is_search() && ! is_admin() ) { $where .= $wpdb->prepare( "AND ID NOT IN ( SELECT post_id FROM {$wpdb->postmeta} WHERE meta_key = %s AND meta_value = %d )", '_hide_from_search_wp', 1 ); } return $where; } /** * Load plugin text domain. */ public static function loadTextDomain() { load_plugin_textdomain( 'mpress-hide-from-search', false, dirname( HIDE_FROM_SEARCH_FILE ) . '/languages' ); } /** * Register fields. */ public static function registerFields() { // Up to WP 5.4 remove_filter( 'register_meta_args', '_wp_register_meta_args_whitelist' ); // WP 5.5+ remove_filter( 'register_meta_args', '_wp_register_meta_args_allowed_list' ); register_meta( 'post', '_hide_from_search_wp', array( 'type' => 'boolean', 'description' => esc_html__( 'Hide from WordPress search', 'mpress-hide-from-search' ), 'single' => true, 'sanitize_callback' => function ( $value ) { return filter_var( $value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ); }, 'auth_callback' => function ( $allowed, $meta_key, $object_id, $user_id ) { return user_can( $user_id, 'edit_post', $object_id ); }, 'plugin' => 'hide-from-search', 'should_render' => function () { return ! get_post_type_object( get_post_type() )->exclude_from_search; }, ) ); register_meta( 'post', '_hide_from_search_engines', array( 'type' => 'boolean', 'description' => esc_html__( 'Hide from search engines', 'mpress-hide-from-search' ), 'single' => true, 'sanitize_callback' => function ( $value ) { return filter_var( $value, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE ); }, 'auth_callback' => function ( $allowed, $meta_key, $object_id, $user_id ) { return user_can( $user_id, 'edit_post', $object_id ); }, 'plugin' => 'hide-from-search', 'should_render' => '__return_true', ) ); } /** * Set up plugin container. */ public static function setUpContainer() { self::$container = new Container( array( 'db_version' => get_option( 'hide_from_search_plugin_version', '0.1' ), 'dir' => dirname( HIDE_FROM_SEARCH_FILE ), 'file' => HIDE_FROM_SEARCH_FILE, 'nonce_name' => 'hide_from_search_nonce', 'version' => HIDE_FROM_SEARCH_VERSION, ) ); self::$container->set( 'fields', self::$container->computed( function () { $keys = get_registered_meta_keys( 'post', '' ); return array_filter( $keys, function ( $value ) { return is_array( $value ) && isset( $value['plugin'] ) && 'hide-from-search' === $value['plugin']; } ); } ) ); } /** * Set up hooks. */ public static function setUpHooks() { add_action( 'init', array( __CLASS__, 'loadTextDomain' ) ); add_action( 'init', array( __CLASS__, 'registerFields' ) ); add_action( 'wp_head', array( __CLASS__, 'hideFromSearchEngines' ), 5 ); add_filter( 'posts_where', array( __CLASS__, 'hideFromWordPressSearch' ) ); } } Plugin::initialize();