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<?php //phpcs:ignore WordPress.Files.FileName.InvalidClassFileName /** * The Jetpack_RelatedPosts class. * * @package automattic/jetpack / use Automattic\Jetpack\Assets; use Automattic\Jetpack\Blocks; use Automattic\Jetpack\Sync\Settings; /* * The Jetpack_RelatedPosts class. / class Jetpack_RelatedPosts { const VERSION = '20240116'; const SHORTCODE = 'jetpack-related-posts'; /* * Instance of the class. * * @var Jetpack_RelatedPosts / private static $instance = null; /* * Instance of the raw class (?). * * @var Jetpack_RelatedPosts / private static $instance_raw = null; /* * Creates and returns a static instance of Jetpack_RelatedPosts. * * @return Jetpack_RelatedPosts / public static function init() { if ( ! self::$instance ) { if ( class_exists( 'WPCOM_RelatedPosts' ) && method_exists( 'WPCOM_RelatedPosts', 'init' ) ) { self::$instance = WPCOM_RelatedPosts::init(); } else { self::$instance = new Jetpack_RelatedPosts(); } } return self::$instance; } /* * Creates and returns a static instance of Jetpack_RelatedPosts_Raw. * * @return Jetpack_RelatedPosts / public static function init_raw() { if ( ! self::$instance_raw ) { if ( class_exists( 'WPCOM_RelatedPosts' ) && method_exists( 'WPCOM_RelatedPosts', 'init_raw' ) ) { self::$instance_raw = WPCOM_RelatedPosts::init_raw(); } else { self::$instance_raw = new Jetpack_RelatedPosts_Raw(); } } return self::$instance_raw; } /* * Options. * * @var array $options / protected $options; /* * Allow feature toggle variable. * * @var bool / protected $allow_feature_toggle; /* * Blog character set. * * @var mixed / protected $blog_charset; /* * Convert character set. * * @var bool / protected $convert_charset; /* * Previous Post ID * * @var int / protected $previous_post_id; /* * Shortcode usage. * * @var bool / protected $found_shortcode = false; /* * Constructor for Jetpack_RelatedPosts. * * @uses get_option, add_action, apply_filters / public function __construct() { $this->blog_charset = get_option( 'blog_charset' ); $this->convert_charset = ( function_exists( 'iconv' ) && ! preg_match( '/^utf\-?8$/i', $this->blog_charset ) ); add_action( 'admin_init', array( $this, 'action_admin_init' ) ); add_action( 'wp', array( $this, 'action_frontend_init' ) ); if ( ! class_exists( 'Jetpack_Media_Summary' ) ) { require_once JETPACK__PLUGIN_DIR . '_inc/lib/class.media-summary.php'; } // Add Related Posts to the REST API Post response. add_action( 'rest_api_init', array( $this, 'rest_register_related_posts' ) ); } /* * Get the blog ID. * * @return Object current blog id. / protected function get_blog_id() { return Jetpack_Options::get_option( 'id' ); } /* * ================= * ACTIONS & FILTERS * ================= / /* * Add a checkbox field to Settings > Reading for enabling related posts. * * @action admin_init * @uses add_settings_field, __, register_setting, add_action / public function action_admin_init() { // Add the setting field [jetpack_relatedposts] and place it in Settings > Reading. add_settings_field( 'jetpack_relatedposts', '<span id="jetpack_relatedposts">' . __( 'Related posts', 'jetpack' ) . '</span>', array( $this, 'print_setting_html' ), 'reading' ); register_setting( 'reading', 'jetpack_relatedposts', array( $this, 'parse_options' ) ); add_action( 'admin_head', array( $this, 'print_setting_head' ) ); if ( 'options-reading.php' === $GLOBALS['pagenow'] ) { // Enqueue style for live preview on the reading settings page. $this->enqueue_assets( false, true ); } } /* * Load related posts assets if it's an eligible front end page or execute search and return JSON if it's an endpoint request. * * @global $_GET * @action wp * @uses add_shortcode, get_the_ID / public function action_frontend_init() { // Add a shortcode handler that outputs nothing, this gets overridden later if we can display related content. add_shortcode( self::SHORTCODE, array( $this, 'get_client_rendered_html_unsupported' ) ); if ( ! $this->enabled_for_request() ) { return; } if ( isset( $_GET['relatedposts'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reading and checking if we need to generate a list of excuded posts, does not update anything on the site. $excludes = $this->parse_numeric_get_arg( 'relatedposts_exclude' ); $this->action_frontend_init_ajax( $excludes ); } else { if ( isset( $_GET['relatedposts_hit'] ) && isset( $_GET['relatedposts_origin'] ) && isset( $_GET['relatedposts_position'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- checking if fields are set to setup tracking, nothing is changing on the site. $this->previous_post_id = (int) $_GET['relatedposts_origin']; // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- fetching a previous post ID for tracking, nothing is changing on the site. $this->log_click( $this->previous_post_id, get_the_ID(), sanitize_text_field( wp_unslash( $_GET['relatedposts_position'] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- logging the click for tracking, nothing is changing on the site. } $this->action_frontend_init_page(); } } /* * Render insertion point. * * @since 4.2.0 * * @return string / public function get_headline() { $options = $this->get_options(); if ( $options['show_headline'] ) { $headline = sprintf( /* This filter is already documented in modules/sharedaddy/sharing-service.php / apply_filters( 'jetpack_sharing_headline_html', '<h3 class="jp-relatedposts-headline"><em>%s</em></h3>', esc_html( $options['headline'] ), 'related-posts' ), esc_html( $options['headline'] ) ); } else { $headline = ''; } return $headline; } /* * Adds a target to the post content to load related posts into if a shortcode for it did not already exist. * Will skip adding the target if the post content contains a Related Posts block, if the 'get_the_excerpt' * hook is in the current filter list, or if the site is running an FSE/Site Editor theme. * * @filter the_content * * @param string $content Post content. * * @return string / public function filter_add_target_to_dom( $content ) { // Do not output related posts for ActivityPub requests. if ( function_exists( '\Activitypub\is_activitypub_request' ) && \Activitypub\is_activitypub_request() ) { return $content; } if ( has_block( 'jetpack/related-posts' ) \|\| Blocks::is_fse_theme() ) { return $content; } if ( ! $this->found_shortcode && ! doing_filter( 'get_the_excerpt' ) ) { if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) { $content .= "\n" . $this->get_server_rendered_html(); } else { $content .= "\n" . $this->get_client_rendered_html(); } } return $content; } /* * Render static markup based on the Gutenberg block code * * @return string Rendered related posts HTML. / public function get_server_rendered_html() { $rp_settings = $this->get_options(); $block_rp_settings = array( 'displayThumbnails' => $rp_settings['show_thumbnails'], 'showHeadline' => $rp_settings['show_headline'], 'displayDate' => isset( $rp_settings['show_date'] ) ? (bool) $rp_settings['show_date'] : true, 'displayContext' => isset( $rp_settings['show_context'] ) && $rp_settings['show_context'], 'postLayout' => isset( $rp_settings['layout'] ) ? $rp_settings['layout'] : 'grid', 'postsToShow' => isset( $rp_settings['size'] ) ? $rp_settings['size'] : 3, /* This filter is already documented in modules/related-posts/jetpack-related-posts.php / 'headline' => apply_filters( 'jetpack_relatedposts_filter_headline', $this->get_headline() ), 'isServerRendered' => true, ); return $this->render_block( $block_rp_settings, '' ); } /* * Looks for our shortcode on the unfiltered content, this has to execute early. * * @filter the_content * @param string $content - content of the post. * @uses has_shortcode * @return string $content / public function test_for_shortcode( $content ) { $this->found_shortcode = has_shortcode( $content, self::SHORTCODE ); return $content; } /* * Returns the HTML for the related posts section. * * @uses esc_html__, apply_filters * @return string / public function get_client_rendered_html() { if ( Settings::is_syncing() ) { return ''; } /* * Filter the Related Posts headline. * * @module related-posts * * @since 3.0.0 * * @param string $headline Related Posts heading. / $headline = apply_filters( 'jetpack_relatedposts_filter_headline', $this->get_headline() ); if ( $this->previous_post_id ) { $exclude = "data-exclude='{$this->previous_post_id}'"; } else { $exclude = ''; } return <<<EOT <div id='jp-relatedposts' class='jp-relatedposts' $exclude> $headline </div> EOT; } /* * Returns the HTML for the related posts section if it's running in the loop or other instances where we don't support related posts. * * @return string / public function get_client_rendered_html_unsupported() { if ( Settings::is_syncing() ) { return ''; } return "\n\n<!-- Jetpack Related Posts is not supported in this context. -->\n\n"; } /* * =============== * GUTENBERG BLOCK * =============== / /* * Echoes out items for the Gutenberg block * * @param array $related_post The post object. * @param array $block_attributes The block attributes. / public function render_block_item( $related_post, $block_attributes ) { $instance_id = 'related-posts-item-' . uniqid(); $label_id = $instance_id . '-label'; $title = $related_post['title']; $url = $related_post['url']; $rel = $related_post['rel']; $img = ''; $list = ''; $item_markup = sprintf( '<li id="%1$s" class="jp-related-posts-i2__post">', esc_attr( $instance_id ) ); // Thumbnail if ( ! empty( $block_attributes['show_thumbnails'] ) && ! empty( $related_post['img']['src'] ) ) { $img = sprintf( '<img loading="lazy" class="jp-related-posts-i2__post-img" src="%1$s" alt="%2$s" %3$s/>', esc_url( $related_post['img']['src'] ), esc_attr( $related_post['img']['alt_text'] ), ( ! empty( $related_post['img']['srcset'] ) ? 'srcset="' . esc_attr( $related_post['img']['srcset'] ) . '"' : '' ) ); } // Link $item_markup .= sprintf( '<a id="%1$s" href="%2$s" class="jp-related-posts-i2__post-link" %3$s>%4$s%5$s</a>', esc_attr( $label_id ), esc_url( $url ), ( ! empty( $rel ) ? 'rel="' . esc_attr( $rel ) . '"' : '' ), esc_html( $title ), $img ); // Date if ( $block_attributes['show_date'] ) { $list .= '<dt>' . __( 'Date', 'jetpack' ) . '</dt>'; $list .= '<dd class="jp-related-posts-i2__post-date">'; $list .= esc_html( $related_post['date'] ); $list .= '</dd>'; } // Author if ( $block_attributes['show_author'] ) { $list .= '<dt>' . __( 'Author', 'jetpack' ) . '</dt>'; $list .= '<dd class="jp-related-posts-i2__post-author">'; $list .= esc_html( $related_post['author'] ); $list .= '</dd>'; } // Context if ( ( $block_attributes['show_context'] ) && ! empty( $related_post['block_context'] ) ) { // translators: this is followed by the reason why the item is related to the current post $list .= '<dt>' . __( 'In relation to', 'jetpack' ) . '</dt>'; $list .= '<dd class="jp-related-posts-i2__post-context">'; // Note: The original 'context' value is not used when rendering the block. // It is still generated and available for the legacy rendering code path though. // See './related-posts.js' for that usage. $block_context = $related_post['block_context']; if ( ! empty( $block_context['link'] ) ) { $list .= sprintf( '<a href="%1$s">%2$s</a>', esc_url( $block_context['link'] ), esc_html( $block_context['text'] ) ); } else { $list .= esc_html( $block_context['text'] ); } $list .= '</dd>'; } // Metadata if ( ! empty( $list ) ) { $item_markup .= '<dl class="jp-related-posts-i2__post-defs">' . $list . '</dl>'; } $item_markup .= '</li>'; return $item_markup; } /* * Render the list of related posts. * * @param array $posts The posts to render into the list. * @param array $block_attributes Block attributes. * @return string / public function render_post_list( $posts, $block_attributes ) { $markup = ''; foreach ( $posts as $post ) { $markup .= $this->render_block_item( $post, $block_attributes ); } return sprintf( // role="list" is required for accessibility as VoiceOver ignores unstyled lists. '<ul class="jp-related-posts-i2__list" role="list" data-post-count="%1$s">%2$s</ul>', count( $posts ), $markup ); } /* * Render the related posts markup. * * @param array $attributes Block attributes. * @param string $content String containing the related Posts block content. * @param WP_Block $block The block object. * @return string / public function render_block( $attributes, $content, $block = null ) { if ( ! jetpack_is_frontend() ) { return $content; } $wrapper_attributes = array(); $post_id = get_the_ID(); $block_attributes = array( 'headline' => isset( $attributes['headline'] ) ? $attributes['headline'] : null, 'show_thumbnails' => isset( $attributes['displayThumbnails'] ) && $attributes['displayThumbnails'], 'show_author' => isset( $attributes['displayAuthor'] ) ? (bool) $attributes['displayAuthor'] : false, 'show_headline' => isset( $attributes['displayHeadline'] ) ? (bool) $attributes['displayHeadline'] : false, 'show_date' => isset( $attributes['displayDate'] ) ? (bool) $attributes['displayDate'] : true, 'show_context' => isset( $attributes['displayContext'] ) && $attributes['displayContext'], 'layout' => isset( $attributes['postLayout'] ) && 'list' === $attributes['postLayout'] ? $attributes['postLayout'] : 'grid', 'size' => ! empty( $attributes['postsToShow'] ) ? absint( $attributes['postsToShow'] ) : 3, ); $excludes = $this->parse_numeric_get_arg( 'relatedposts_origin' ); $related_posts = $this->get_for_post_id( $post_id, array( 'size' => $block_attributes['size'], 'exclude_post_ids' => $excludes, ) ); if ( empty( $related_posts ) ) { return ''; } $list_markup = $this->render_post_list( $related_posts, $block_attributes ); if ( empty( $attributes['isServerRendered'] ) ) { // The get_server_rendered_html() path won't register a block, // so only apply block supports when not server rendered. $wrapper_attributes = \WP_Block_Supports::get_instance()->apply_block_supports(); } $headline_markup = ''; if ( isset( $block ) ) { foreach ( $block->inner_blocks as $inner_block ) { if ( 'core/heading' === $inner_block->name && ! empty( wp_strip_all_tags( $inner_block->inner_html ) ) ) { $headline_markup = trim( $inner_block->inner_html ); break; } } } if ( empty( $headline_markup ) && $block_attributes['show_headline'] === true ) { $headline = $block_attributes['headline']; if ( strlen( trim( $headline ) ) !== 0 ) { $headline_markup = sprintf( '<h3 class="jp-relatedposts-headline">%1$s</h3>', esc_html( $headline ) ); } } $display_markup = sprintf( '<nav class="jp-relatedposts-i2%1$s"%2$s data-layout="%3$s" aria-label="%6$s">%4$s%5$s</nav>', ! empty( $wrapper_attributes['class'] ) ? ' ' . esc_attr( $wrapper_attributes['class'] ) : '', ! empty( $wrapper_attributes['style'] ) ? ' style="' . esc_attr( $wrapper_attributes['style'] ) . '"' : '', esc_attr( $block_attributes['layout'] ), $headline_markup, $list_markup, empty( $headline_markup ) ? esc_attr__( 'Related Posts', 'jetpack' ) : esc_attr( wp_strip_all_tags( $headline_markup ) ) ); /* * Filter the output HTML of Related Posts. * * @module related-posts * * @since 10.7 * * @param string $display_markup HTML output of Related Posts. * @param int\|false get_the_ID() Post ID of the post for which we are retrieving Related Posts. * @param array $related_posts Array of related posts. * @param array $block_attributes Array of Block attributes. / return (string) apply_filters( 'jetpack_related_posts_display_markup', $display_markup, $post_id, $related_posts, $block_attributes ); } /* * ======================== * PUBLIC UTILITY FUNCTIONS * ======================== / /* * Parse a numeric GET variable to an array of values. * * @since 6.9.0 * * @uses absint * * @param string $arg Name of the GET variable. * @return array $result Parsed value(s) / public function parse_numeric_get_arg( $arg ) { $result = array(); if ( isset( $_GET[ $arg ] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- requests are used to generate a list of related posts we want to exclude. if ( is_string( $_GET[ $arg ] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended $result = explode( ',', sanitize_text_field( wp_unslash( $_GET[ $arg ] ) ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended } elseif ( is_array( $_GET[ $arg ] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended $args = array_map( 'sanitize_text_field', wp_unslash( $_GET[ $arg ] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended $result = array_values( $args ); } $result = array_unique( array_filter( array_map( 'absint', $result ) ) ); } return $result; } /* * Gets options set for Jetpack_RelatedPosts and merge with defaults. * * @uses Jetpack_Options::get_option, apply_filters * @return array / public function get_options() { if ( null === $this->options ) { $this->options = Jetpack_Options::get_option( 'relatedposts', array() ); if ( ! is_array( $this->options ) ) { $this->options = array(); } if ( ! isset( $this->options['enabled'] ) ) { $this->options['enabled'] = true; } if ( ! isset( $this->options['show_headline'] ) ) { $this->options['show_headline'] = true; } if ( ! isset( $this->options['show_thumbnails'] ) ) { $this->options['show_thumbnails'] = false; } if ( ! isset( $this->options['show_date'] ) ) { $this->options['show_date'] = true; } if ( ! isset( $this->options['show_context'] ) ) { $this->options['show_context'] = true; } if ( ! isset( $this->options['layout'] ) ) { $this->options['layout'] = 'grid'; } if ( ! isset( $this->options['headline'] ) ) { $this->options['headline'] = esc_html__( 'Related', 'jetpack' ); } if ( empty( $this->options['size'] ) \|\| (int) $this->options['size'] < 1 ) { $this->options['size'] = 3; } /* * Filter Related Posts basic options. * * @module related-posts * * @since 2.8.0 * * @param array $this->_options Array of basic Related Posts options. / $this->options = apply_filters( 'jetpack_relatedposts_filter_options', $this->options ); } return $this->options; } /* * Gets options. * * @param string $option_name - option we want to get. / public function get_option( $option_name ) { $options = $this->get_options(); if ( isset( $options[ $option_name ] ) ) { return $options[ $option_name ]; } return false; } /* * Parses input and returns normalized options array. * * @param array $input - input we're parsing. * @uses self::get_options * @return array / public function parse_options( $input ) { $current = $this->get_options(); if ( ! is_array( $input ) ) { $input = array(); } if ( ! isset( $input['enabled'] ) \|\| isset( $input['show_date'] ) \|\| isset( $input['show_context'] ) \|\| isset( $input['layout'] ) \|\| isset( $input['headline'] ) ) { $input['enabled'] = '1'; } if ( '1' == $input['enabled'] ) { // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual -- expecting string, but may return bools. $current['enabled'] = true; $current['show_headline'] = ( isset( $input['show_headline'] ) && '1' == $input['show_headline'] ); // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual $current['show_thumbnails'] = ( isset( $input['show_thumbnails'] ) && '1' == $input['show_thumbnails'] ); // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual $current['show_date'] = ( isset( $input['show_date'] ) && '1' == $input['show_date'] ); // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual $current['show_context'] = ( isset( $input['show_context'] ) && '1' == $input['show_context'] ); // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual $current['layout'] = isset( $input['layout'] ) && in_array( $input['layout'], array( 'grid', 'list' ), true ) ? $input['layout'] : 'grid'; $current['headline'] = isset( $input['headline'] ) ? $input['headline'] : esc_html__( 'Related', 'jetpack' ); } else { $current['enabled'] = false; } if ( isset( $input['size'] ) && (int) $input['size'] > 0 ) { $current['size'] = (int) $input['size']; } else { $current['size'] = null; } return $current; } /* * HTML for admin settings page. * * @uses self::get_options, checked, esc_html__ / public function print_setting_html() { $options = $this->get_options(); $ui_settings_template = <<<EOT <p class="description">%s</p> <ul id="settings-reading-relatedposts-customize"> <li> <label><input name="jetpack_relatedposts[show_headline]" type="checkbox" value="1" %s /> %s</label> </li> <li> <label><input name="jetpack_relatedposts[show_thumbnails]" type="checkbox" value="1" %s /> %s</label> </li> <li> <label><input name="jetpack_relatedposts[show_date]" type="checkbox" value="1" %s /> %s</label> </li> <li> <label><input name="jetpack_relatedposts[show_context]" type="checkbox" value="1" %s /> %s</label> </li> </ul> <div id='settings-reading-relatedposts-preview'> %s <div id="jp-relatedposts" class="jp-relatedposts"></div> </div> EOT; $ui_settings = sprintf( $ui_settings_template, esc_html__( 'The following settings will impact all related posts on your site, except for those you created via the block editor:', 'jetpack' ), checked( $options['show_headline'], true, false ), esc_html__( 'Highlight related content with a heading', 'jetpack' ), checked( $options['show_thumbnails'], true, false ), esc_html__( 'Show a thumbnail image where available', 'jetpack' ), checked( $options['show_date'], true, false ), esc_html__( 'Show entry date', 'jetpack' ), checked( $options['show_context'], true, false ), esc_html__( 'Show context (category or tag)', 'jetpack' ), esc_html__( 'Preview:', 'jetpack' ) ); if ( ! $this->allow_feature_toggle() ) { $template = <<<EOT <input type="hidden" name="jetpack_relatedposts[enabled]" value="1" /> %s EOT; printf( $template, // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped $ui_settings // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- data is escaped when variable is set. ); } else { $template = <<<EOT <ul id="settings-reading-relatedposts"> <li> <label><input type="radio" name="jetpack_relatedposts[enabled]" value="0" class="tog" %s /> %s</label> </li> <li> <label><input type="radio" name="jetpack_relatedposts[enabled]" value="1" class="tog" %s /> %s</label> %s </li> </ul> EOT; printf( $template, // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped checked( $options['enabled'], false, false ), esc_html__( 'Hide related content after posts', 'jetpack' ), checked( $options['enabled'], true, false ), esc_html__( 'Show related content after posts', 'jetpack' ), $ui_settings // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped -- data is escaped when variable is set. ); } } /* * Head JS/CSS for admin settings page. * * @uses esc_html__ * @return null / public function print_setting_head() { // only dislay the Related Posts JavaScript on the Reading Settings Admin Page. $current_screen = get_current_screen(); if ( $current_screen === null ) { return; } if ( 'options-reading' !== $current_screen->id ) { return; } $related_headline = sprintf( '<h3 class="jp-relatedposts-headline"><em>%s</em></h3>', esc_html__( 'Related', 'jetpack' ) ); $href_params = 'class="jp-relatedposts-post-a" href="#jetpack_relatedposts" rel="nofollow" data-origin="0" data-position="0"'; $related_with_images = <<<EOT <div class="jp-relatedposts-items jp-relatedposts-items-visual"> <div class="jp-relatedposts-post jp-relatedposts-post0 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image"> <a $href_params> <img class="jp-relatedposts-post-img" src="https://jetpackme.files.wordpress.com/2019/03/cat-blog.png" width="350" alt="Big iPhone/iPad Update Now Available" scale="0"> </a> <h4 class="jp-relatedposts-post-title"> <a $href_params>Big iPhone/iPad Update Now Available</a> </h4> <p class="jp-relatedposts-post-excerpt">Big iPhone/iPad Update Now Available</p> <p class="jp-relatedposts-post-context">In "Mobile"</p> </div> <div class="jp-relatedposts-post jp-relatedposts-post1 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image"> <a $href_params> <img class="jp-relatedposts-post-img" src="https://jetpackme.files.wordpress.com/2019/03/devices.jpg" width="350" alt="The WordPress for Android App Gets a Big Facelift" scale="0"> </a> <h4 class="jp-relatedposts-post-title"> <a $href_params>The WordPress for Android App Gets a Big Facelift</a> </h4> <p class="jp-relatedposts-post-excerpt">The WordPress for Android App Gets a Big Facelift</p> <p class="jp-relatedposts-post-context">In "Mobile"</p> </div> <div class="jp-relatedposts-post jp-relatedposts-post2 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image"> <a $href_params> <img class="jp-relatedposts-post-img" src="https://jetpackme.files.wordpress.com/2019/03/mobile-wedding.jpg" width="350" alt="Upgrade Focus: VideoPress For Weddings" scale="0"> </a> <h4 class="jp-relatedposts-post-title"> <a $href_params>Upgrade Focus: VideoPress For Weddings</a> </h4> <p class="jp-relatedposts-post-excerpt">Upgrade Focus: VideoPress For Weddings</p> <p class="jp-relatedposts-post-context">In "Upgrade"</p> </div> </div> EOT; $related_with_images = str_replace( "\n", '', $related_with_images ); $related_without_images = <<<EOT <div class="jp-relatedposts-items jp-relatedposts-items-minimal"> <p class="jp-relatedposts-post jp-relatedposts-post0" data-post-id="0" data-post-format="image"> <span class="jp-relatedposts-post-title"><a $href_params>Big iPhone/iPad Update Now Available</a></span> <span class="jp-relatedposts-post-context">In "Mobile"</span> </p> <p class="jp-relatedposts-post jp-relatedposts-post1" data-post-id="0" data-post-format="image"> <span class="jp-relatedposts-post-title"><a $href_params>The WordPress for Android App Gets a Big Facelift</a></span> <span class="jp-relatedposts-post-context">In "Mobile"</span> </p> <p class="jp-relatedposts-post jp-relatedposts-post2" data-post-id="0" data-post-format="image"> <span class="jp-relatedposts-post-title"><a $href_params>Upgrade Focus: VideoPress For Weddings</a></span> <span class="jp-relatedposts-post-context">In "Upgrade"</span> </p> </div> EOT; $related_without_images = str_replace( "\n", '', $related_without_images ); if ( $this->allow_feature_toggle() ) { $extra_css = '#settings-reading-relatedposts-customize { padding-left:2em; margin-top:.5em; }'; } else { $extra_css = ''; } // phpcs:disable WordPress.Security.EscapeOutput.HeredocOutputNotEscaped -- Escaped above where needed. echo <<<EOT <style type="text/css"> #settings-reading-relatedposts .disabled { opacity:.5; filter:Alpha(opacity=50); } #settings-reading-relatedposts-preview .jp-relatedposts { background:#fff; padding:.5em; width:75%; } $extra_css </style> <script type="text/javascript"> jQuery( document ).ready( function($) { var update_ui = function() { var is_enabled = true; if ( 'radio' == $( 'input[name="jetpack_relatedposts[enabled]"]' ).attr('type') ) { if ( '0' == $( 'input[name="jetpack_relatedposts[enabled]"]:checked' ).val() ) { is_enabled = false; } } if ( is_enabled ) { $( '#settings-reading-relatedposts-customize' ) .removeClass( 'disabled' ) .find( 'input' ) .attr( 'disabled', false ); $( '#settings-reading-relatedposts-preview' ) .removeClass( 'disabled' ); } else { $( '#settings-reading-relatedposts-customize' ) .addClass( 'disabled' ) .find( 'input' ) .attr( 'disabled', true ); $( '#settings-reading-relatedposts-preview' ) .addClass( 'disabled' ); } }; var update_preview = function() { var html = ''; if ( $( 'input[name="jetpack_relatedposts[show_headline]"]:checked' ).length ) { html += '$related_headline'; } if ( $( 'input[name="jetpack_relatedposts[show_thumbnails]"]:checked' ).length ) { html += '$related_with_images'; } else { html += '$related_without_images'; } $( '#settings-reading-relatedposts-preview .jp-relatedposts' ).html( html ); if ( $( 'input[name="jetpack_relatedposts[show_date]"]:checked' ).length ) { $( '.jp-relatedposts-post-title' ).each( function() { $( this ).after( $( '<span>August 8, 2005</span>' ) ); } ); } if ( $( 'input[name="jetpack_relatedposts[show_context]"]:checked' ).length ) { $( '.jp-relatedposts-post-context' ).show(); } else { $( '.jp-relatedposts-post-context' ).hide(); } $( '#settings-reading-relatedposts-preview .jp-relatedposts' ).show(); }; // Update on load update_preview(); update_ui(); // Update on change $( '#settings-reading-relatedposts-customize input' ) .change( update_preview ); $( '#settings-reading-relatedposts' ) .find( 'input.tog' ) .change( update_ui ); }); </script> EOT; // phpcs:enable WordPress.Security.EscapeOutput.HeredocOutputNotEscaped } /* * Gets an array of related posts that match the given post_id. * * @param int $post_id Post which we want to find related posts for. * @param array $args - params to use when building Elasticsearch filters to narrow down the search domain. * @uses self::get_options, get_post_type, wp_parse_args, apply_filters * @return array / public function get_for_post_id( $post_id, array $args ) { $options = $this->get_options(); if ( ! empty( $args['size'] ) ) { $options['size'] = $args['size']; } if ( ! $options['enabled'] \|\| 0 === (int) $post_id \|\| empty( $options['size'] ) ) { return array(); } $defaults = array( 'size' => (int) $options['size'], 'post_type' => get_post_type( $post_id ), 'post_formats' => array(), 'has_terms' => array(), 'date_range' => array(), 'exclude_post_ids' => array(), ); $args = wp_parse_args( $args, $defaults ); /* * Filter the arguments used to retrieve a list of Related Posts. * * @module related-posts * * @since 2.8.0 * * @param array $args Array of options to retrieve Related Posts. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args = apply_filters( 'jetpack_relatedposts_filter_args', $args, $post_id ); $filters = $this->get_es_filters_from_args( $post_id, $args ); /* * Filter Elasticsearch options used to calculate Related Posts. * * @module related-posts * * @since 2.8.0 * * @param array $filters Array of Elasticsearch filters based on the post_id and args. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $filters = apply_filters( 'jetpack_relatedposts_filter_filters', $filters, $post_id ); $results = $this->get_related_posts( $post_id, $args['size'], $filters ); /* * Filter the array of related posts matched by Elasticsearch. * * @module related-posts * * @since 2.8.0 * * @param array $results Array of related posts matched by Elasticsearch. * @param int $post_id Post ID of the post for which we are retrieving Related Posts. / return apply_filters( 'jetpack_relatedposts_returned_results', $results, $post_id ); } /* * ========================= * PRIVATE UTILITY FUNCTIONS * ========================= / /* * Creates an array of Elasticsearch filters based on the post_id and args. * * @param int $post_id - the post ID. * @param array $args - the arguments. * @uses apply_filters, get_post_types, get_post_format_strings * @return array / protected function get_es_filters_from_args( $post_id, array $args ) { $filters = array(); /* * Filter the terms used to search for Related Posts. * * @module related-posts * * @since 2.8.0 * * @param array $args['has_terms'] Array of terms associated to the Related Posts. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args['has_terms'] = apply_filters( 'jetpack_relatedposts_filter_has_terms', $args['has_terms'], $post_id ); if ( ! empty( $args['has_terms'] ) ) { foreach ( (array) $args['has_terms'] as $term ) { if ( mb_strlen( $term->taxonomy ) ) { switch ( $term->taxonomy ) { case 'post_tag': $tax_fld = 'tag.slug'; break; case 'category': $tax_fld = 'category.slug'; break; default: $tax_fld = 'taxonomy.' . $term->taxonomy . '.slug'; break; } $filters[] = array( 'term' => array( $tax_fld => $term->slug ) ); } } } /* * Filter the Post Types where we search Related Posts. * * @module related-posts * * @since 2.8.0 * * @param array $args['post_type'] Array of Post Types. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args['post_type'] = apply_filters( 'jetpack_relatedposts_filter_post_type', $args['post_type'], $post_id ); $valid_post_types = get_post_types(); if ( is_array( $args['post_type'] ) ) { $sanitized_post_types = array(); foreach ( $args['post_type'] as $pt ) { if ( in_array( $pt, $valid_post_types, true ) ) { $sanitized_post_types[] = $pt; } } if ( ! empty( $sanitized_post_types ) ) { $filters[] = array( 'terms' => array( 'post_type' => $sanitized_post_types ) ); } } elseif ( in_array( $args['post_type'], $valid_post_types, true ) && 'all' !== $args['post_type'] ) { $filters[] = array( 'term' => array( 'post_type' => $args['post_type'] ) ); } /* * Filter the Post Formats where we search Related Posts. * * @module related-posts * * @since 3.3.0 * * @param array $args['post_formats'] Array of Post Formats. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args['post_formats'] = apply_filters( 'jetpack_relatedposts_filter_post_formats', $args['post_formats'], $post_id ); $valid_post_formats = get_post_format_strings(); $sanitized_post_formats = array(); foreach ( $args['post_formats'] as $pf ) { if ( array_key_exists( $pf, $valid_post_formats ) ) { $sanitized_post_formats[] = $pf; } } if ( ! empty( $sanitized_post_formats ) ) { $filters[] = array( 'terms' => array( 'post_format' => $sanitized_post_formats ) ); } /* * Filter the date range used to search Related Posts. * * @module related-posts * * @since 2.8.0 * * @param array $args['date_range'] Array of a month interval where we search Related Posts. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args['date_range'] = apply_filters( 'jetpack_relatedposts_filter_date_range', $args['date_range'], $post_id ); if ( is_array( $args['date_range'] ) && ! empty( $args['date_range'] ) ) { $args['date_range'] = array_map( 'intval', $args['date_range'] ); if ( ! empty( $args['date_range']['from'] ) && ! empty( $args['date_range']['to'] ) ) { $filters[] = array( 'range' => array( 'date_gmt' => $this->get_coalesced_range( $args['date_range'] ), ), ); } } /* * Filter the Post IDs excluded from appearing in Related Posts. * * @module related-posts * * @since 2.9.0 * * @param array $args['exclude_post_ids'] Array of Post IDs. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $args['exclude_post_ids'] = apply_filters( 'jetpack_relatedposts_filter_exclude_post_ids', $args['exclude_post_ids'], $post_id ); if ( ! empty( $args['exclude_post_ids'] ) && is_array( $args['exclude_post_ids'] ) ) { $excluded_post_ids = array(); foreach ( $args['exclude_post_ids'] as $exclude_post_id ) { $exclude_post_id = (int) $exclude_post_id; if ( $exclude_post_id > 0 ) { $excluded_post_ids[] = $exclude_post_id; } } $filters[] = array( 'not' => array( 'terms' => array( 'post_id' => $excluded_post_ids ) ) ); } return $filters; } /* * Takes a range and coalesces it into a month interval bracketed by a time as determined by the blog_id to enhance caching. * * @todo Rewrite this function with proper date handling rather than `strtotime()` and `date()`. * * @param array $date_range - the date range. * @return array / protected function get_coalesced_range( array $date_range ) { $now = time(); $coalesce_time = $this->get_blog_id() % 86400; $current_time = $now - strtotime( 'today', $now ); if ( $current_time < $coalesce_time && '01' === date( 'd', $now ) ) { // phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date // Move back 1 period. return array( 'from' => date( 'Y-m-01', strtotime( '-1 month', $date_range['from'] ) ) . ' ' . date( 'H:i:s', $coalesce_time ), //phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date 'to' => date( 'Y-m-01', $date_range['to'] ) . ' ' . date( 'H:i:s', $coalesce_time ), //phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date ); } else { // Use current period. return array( 'from' => date( 'Y-m-01', $date_range['from'] ) . ' ' . date( 'H:i:s', $coalesce_time ), //phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date 'to' => date( 'Y-m-01', strtotime( '+1 month', $date_range['to'] ) ) . ' ' . date( 'H:i:s', $coalesce_time ), //phpcs:ignore WordPress.DateTime.RestrictedFunctions.date_date ); } } /* * Generate and output ajax response for related posts API call. * NOTE: Calls exit() to end all further processing after payload has been outputed. * * @param array $excludes array of post_ids to exclude. * @uses send_nosniff_header, self::get_for_post_id, get_the_ID * @return never / protected function action_frontend_init_ajax( array $excludes ) { define( 'DOING_AJAX', true ); header( 'Content-type: application/json; charset=utf-8' ); // JSON can only be UTF-8. send_nosniff_header(); $options = $this->get_options(); if ( isset( $_GET['jetpackrpcustomize'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Recommended -- adds dummy content if we're in the customizer. // If we're in the customizer, add dummy content. $date_now = current_time( get_option( 'date_format' ) ); $related_posts = array( array( 'id' => - 1, 'url' => 'https://jetpackme.files.wordpress.com/2019/03/cat-blog.png', 'url_meta' => array( 'origin' => 0, 'position' => 0, ), 'title' => esc_html__( 'Big iPhone/iPad Update Now Available', 'jetpack' ), 'date' => $date_now, 'format' => false, 'excerpt' => esc_html__( 'It is that time of the year when devices are shiny again.', 'jetpack' ), 'rel' => 'nofollow', 'context' => esc_html__( 'In "Mobile"', 'jetpack' ), 'img' => array( 'src' => 'https://jetpackme.files.wordpress.com/2019/03/cat-blog.png', 'width' => 350, 'height' => 200, ), 'classes' => array(), ), array( 'id' => - 1, 'url' => 'https://jetpackme.files.wordpress.com/2019/03/devices.jpg', 'url_meta' => array( 'origin' => 0, 'position' => 0, ), 'title' => esc_html__( 'The WordPress for Android App Gets a Big Facelift', 'jetpack' ), 'date' => $date_now, 'format' => false, 'excerpt' => esc_html__( 'Writing is new again in Android with the new WordPress app.', 'jetpack' ), 'rel' => 'nofollow', 'context' => esc_html__( 'In "Mobile"', 'jetpack' ), 'img' => array( 'src' => 'https://jetpackme.files.wordpress.com/2019/03/devices.jpg', 'width' => 350, 'height' => 200, ), 'classes' => array(), ), array( 'id' => - 1, 'url' => 'https://jetpackme.files.wordpress.com/2019/03/mobile-wedding.jpg', 'url_meta' => array( 'origin' => 0, 'position' => 0, ), 'title' => esc_html__( 'Upgrade Focus, VideoPress for weddings', 'jetpack' ), 'date' => $date_now, 'format' => false, 'excerpt' => esc_html__( 'Weddings are in the spotlight now with VideoPress for weddings.', 'jetpack' ), 'rel' => 'nofollow', 'context' => esc_html__( 'In "Mobile"', 'jetpack' ), 'img' => array( 'src' => 'https://jetpackme.files.wordpress.com/2019/03/mobile-wedding.jpg', 'width' => 350, 'height' => 200, ), 'classes' => array(), ), ); for ( $total = 0; $total < $options['size'] - 3; $total++ ) { $related_posts[] = $related_posts[ $total ]; } $current_post = get_post(); // Exclude current post after filtering to make sure it's excluded and not lost during filtering. $excluded_posts = array_merge( /* This filter is already documented in modules/related-posts/jetpack-related-posts.php / apply_filters( 'jetpack_relatedposts_filter_exclude_post_ids', array() ), array( $current_post->ID ) ); // Fetch posts with featured image. $with_post_thumbnails = get_posts( array( 'posts_per_page' => $options['size'], 'post__not_in' => $excluded_posts, 'post_type' => $current_post->post_type, 'meta_key' => '_thumbnail_id', 'suppress_filters' => false, ) ); // If we don't have enough, fetch posts without featured image. $count_post_with_thumbnails = is_countable( $with_post_thumbnails ) ? count( $with_post_thumbnails ) : 0; $more = $options['size'] - $count_post_with_thumbnails; if ( 0 < $more ) { $no_post_thumbnails = get_posts( array( 'posts_per_page' => $more, 'post__not_in' => $excluded_posts, 'post_type' => $current_post->post_type, 'meta_query' => array( array( 'key' => '_thumbnail_id', 'compare' => 'NOT EXISTS', ), ), 'suppress_filters' => false, ) ); } else { $no_post_thumbnails = array(); } foreach ( array_merge( $with_post_thumbnails, $no_post_thumbnails ) as $index => $real_post ) { $related_posts[ $index ]['id'] = $real_post->ID; $related_posts[ $index ]['url'] = esc_url( get_permalink( $real_post ) ); $related_posts[ $index ]['title'] = $this->to_utf8( $this->get_title( $real_post->post_title, $real_post->post_content, $real_post->ID ) ); $related_posts[ $index ]['date'] = get_the_date( '', $real_post ); $related_posts[ $index ]['excerpt'] = html_entity_decode( $this->to_utf8( $this->get_excerpt( $real_post->post_excerpt, $real_post->post_content ) ), ENT_QUOTES, 'UTF-8' ); $related_posts[ $index ]['img'] = $this->generate_related_post_image_params( $real_post->ID ); $related_posts[ $index ]['context'] = $this->generate_related_post_context( $real_post->ID ); } } else { $related_posts = $this->get_for_post_id( get_the_ID(), array( 'exclude_post_ids' => $excludes, ) ); } $response = array( 'version' => self::VERSION, 'show_thumbnails' => (bool) $options['show_thumbnails'], 'show_date' => (bool) $options['show_date'], 'show_context' => (bool) $options['show_context'], 'layout' => (string) $options['layout'], 'headline' => (string) $options['headline'], 'items' => array(), ); if ( count( $related_posts ) === $options['size'] ) { $response['items'] = $related_posts; } echo wp_json_encode( $response ); exit(); } /* * Returns a UTF-8 encoded array of post information for the given post_id * * @param int $post_id - the post ID. * @param int $position - position of the post. * @param int $origin - The post id that this is related to. * @uses get_post, get_permalink, remove_query_arg, get_post_format, apply_filters * @return array / public function get_related_post_data_for_post( $post_id, $position, $origin ) { $post = get_post( $post_id ); return array( 'id' => $post->ID, 'url' => get_permalink( $post->ID ), 'url_meta' => array( 'origin' => $origin, 'position' => $position, ), 'title' => $this->to_utf8( $this->get_title( $post->post_title, $post->post_content, $post->ID ) ), 'author' => $this->generate_related_post_display_author( $post->ID ), 'date' => get_the_date( '', $post->ID ), 'format' => get_post_format( $post->ID ), 'excerpt' => html_entity_decode( $this->to_utf8( $this->get_excerpt( $post->post_excerpt, $post->post_content ) ), ENT_QUOTES, 'UTF-8' ), /* * Filters the rel attribute for the Related Posts' links. * * @module related-posts * * @since 3.7.0 * @since 7.9.0 - Change Default value to empty. * * @param string $link_rel Link rel attribute for Related Posts' link. Default is empty. * @param int $post->ID Post ID. / 'rel' => apply_filters( 'jetpack_relatedposts_filter_post_link_rel', '', $post->ID ), /* * Filter the context displayed below each Related Post. * * This context is used when rendering the legacy 'widget' version of Related Posts. * It is not used when rendering the block-based version. See 'block_context' below for that. * * @module related-posts * * @since 3.0.0 * * @param string $this->to_utf8( $this->generate_related_post_context( $post->ID ) ) Context displayed below each related post. * @param int $post_id Post ID of the post for which we are retrieving Related Posts. / 'context' => apply_filters( 'jetpack_relatedposts_filter_post_context', $this->to_utf8( $this->generate_related_post_context( $post->ID ) ), $post->ID ), // The context used when rendering as a Block. No filtering applied. 'block_context' => $this->generate_related_post_context_block( $post->ID ), 'img' => $this->generate_related_post_image_params( $post->ID ), /* * Filter the post css classes added on HTML markup. * * @module related-posts * * @since 3.8.0 * * @param array array() CSS classes added on post HTML markup. * @param string $post_id Post ID. / 'classes' => apply_filters( 'jetpack_relatedposts_filter_post_css_classes', array(), $post->ID ), ); } /* * Returns either the title or a small excerpt to use as title for post. * * @uses strip_shortcodes, wp_trim_words, __, apply_filters * * @param string $post_title Post title. * @param string $post_content Post content. * @param int $post_id Post ID. * * @return string / protected function get_title( $post_title, $post_content, $post_id ) { if ( ! empty( $post_title ) ) { return wp_strip_all_tags( /* This filter is documented in core/src/wp-includes/post-template.php / apply_filters( 'the_title', $post_title, $post_id ) ); } $post_title = wp_trim_words( wp_strip_all_tags( strip_shortcodes( $post_content ) ), 5, '…' ); if ( ! empty( $post_title ) ) { return $post_title; } return __( 'Untitled Post', 'jetpack' ); } /* * Returns a plain text post excerpt for title attribute of links. * * @param string $post_excerpt - the post excerpt. * @param string $post_content - the post content. * @uses strip_shortcodes, wp_strip_all_tags, wp_trim_words * @return string / protected function get_excerpt( $post_excerpt, $post_content ) { if ( empty( $post_excerpt ) ) { $excerpt = $post_content; } else { $excerpt = $post_excerpt; } return wp_trim_words( wp_strip_all_tags( strip_shortcodes( $excerpt ) ), 50, '…' ); } /* * Generates the thumbnail image to be used for the post. Uses the * image as returned by Jetpack_PostImages::get_image() * * @param int $post_id - the post ID. * @uses self::get_options, apply_filters, Jetpack_PostImages::get_image, Jetpack_PostImages::fit_image_url * @return string / protected function generate_related_post_image_params( $post_id ) { $image_params = array( 'alt_text' => '', 'src' => '', 'width' => 0, 'height' => 0, ); /* * Filter the size of the Related Posts images. * * @module related-posts * * @since 2.8.0 * * @param array array( 'width' => 350, 'height' => 200 ) Size of the images displayed below each Related Post. / $thumbnail_size = apply_filters( 'jetpack_relatedposts_filter_thumbnail_size', array( 'width' => 350, 'height' => 200, ) ); if ( ! is_array( $thumbnail_size ) ) { $thumbnail_size = array( 'width' => (int) $thumbnail_size, 'height' => (int) $thumbnail_size, ); } // Try to get post image. if ( class_exists( 'Jetpack_PostImages' ) ) { $img_url = ''; $post_image = Jetpack_PostImages::get_image( $post_id, $thumbnail_size ); if ( is_array( $post_image ) ) { $img_url = $post_image['src']; } elseif ( class_exists( 'Jetpack_Media_Summary' ) ) { $media = Jetpack_Media_Summary::get( $post_id ); if ( is_array( $media ) && ! empty( $media['image'] ) ) { $img_url = $media['image']; } } if ( ! empty( $img_url ) ) { if ( ! empty( $post_image['alt_text'] ) ) { $image_params['alt_text'] = $post_image['alt_text']; } else { $image_params['alt_text'] = ''; } $thumbnail_width = 0; $thumbnail_height = 0; if ( ! empty( $thumbnail_size['width'] ) ) { $thumbnail_width = $thumbnail_size['width']; $image_params['width'] = $thumbnail_width; } if ( ! empty( $thumbnail_size['height'] ) ) { $thumbnail_height = $thumbnail_size['height']; $image_params['height'] = $thumbnail_height; } $image_params['src'] = Jetpack_PostImages::fit_image_url( $img_url, $thumbnail_width, $thumbnail_height ); // Add a srcset to handle zoomed views and high-density screens. $srcset = Jetpack_PostImages::generate_cropped_srcset( $post_image, $thumbnail_width, $thumbnail_height ); if ( ! empty( $srcset ) ) { $image_params['srcset'] = $srcset; } } } return $image_params; } /* * Returns the string UTF-8 encoded * * @param string $text - the text we want to convert. * @return string / protected function to_utf8( $text ) { if ( $this->convert_charset ) { return iconv( $this->blog_charset, 'UTF-8', $text ); } else { return $text; } } /* * ============================================= * PROTECTED UTILITY FUNCTIONS EXTENDED BY WPCOM * ============================================= / /* * Workhorse method to return array of related posts matched by Elasticsearch. * * @param int $post_id - the ID of the post. * @param int $size - the size of the post. * @param array $filters - filters. * @uses wp_remote_post, is_wp_error, get_option, wp_remote_retrieve_body, get_post, add_query_arg, remove_query_arg, get_permalink, get_post_format, apply_filters * @return array / protected function get_related_posts( $post_id, $size, array $filters ) { $hits = $this->filter_non_public_posts( $this->get_related_post_ids( $post_id, $size, $filters ) ); /* * Filter the Related Posts matched by Elasticsearch. * * @module related-posts * * @since 2.9.0 * * @param array $hits Array of Post IDs matched by Elasticsearch. * @param string $post_id Post ID of the post for which we are retrieving Related Posts. / $hits = apply_filters( 'jetpack_relatedposts_filter_hits', $hits, $post_id ); $related_posts = array(); foreach ( $hits as $i => $hit ) { $related_posts[] = $this->get_related_post_data_for_post( $hit['id'], $i, $post_id ); } return $related_posts; } /* * Get array of related posts matched by Elasticsearch. * * @param int $post_id - the post ID. * @param int $size - the size. * @param array $filters - some filters. * @uses wp_remote_post, is_wp_error, wp_remote_retrieve_body, get_post_meta, update_post_meta * @return array / protected function get_related_post_ids( $post_id, $size, array $filters ) { $transient_name = null; $now_ts = time(); $cache_meta_key = '_jetpack_related_posts_cache'; $body = array( 'size' => (int) $size, ); if ( ! empty( $filters ) ) { $body['filter'] = array( 'and' => $filters ); } // Build cache key. $cache_key = md5( serialize( $body ) ); // phpcs:ignore WordPress.PHP.DiscouragedPHPFunctions.serialize_serialize -- this is used for caching. // Load all cached values. if ( wp_using_ext_object_cache() ) { $transient_name = "{$cache_meta_key}_{$cache_key}_{$post_id}"; $cache = get_transient( $transient_name ); if ( false !== $cache ) { return $cache; } } else { $cache = get_post_meta( $post_id, $cache_meta_key, true ); if ( empty( $cache ) ) { $cache = array(); } // Cache is valid! Return cached value. if ( isset( $cache[ $cache_key ] ) && is_array( $cache[ $cache_key ] ) && $cache[ $cache_key ]['expires'] > $now_ts ) { return $cache[ $cache_key ]['payload']; } } $user_agent = ''; if ( isset( $_SERVER['HTTP_USER_AGENT'] ) ) { $user_agent = strtolower( filter_var( wp_unslash( $_SERVER['HTTP_USER_AGENT'] ) ) ); } $response = wp_remote_post( "https://public-api.wordpress.com/rest/v1/sites/{$this->get_blog_id()}/posts/$post_id/related/", array( 'timeout' => 10, 'user-agent' => "jetpack_related_posts, $user_agent", 'sslverify' => true, 'body' => $body, ) ); // Oh no... return nothing don't cache errors. Also, don't cache HTTP 409 conflict responses. if ( is_wp_error( $response ) \|\| WP_Http::CONFLICT === wp_remote_retrieve_response_code( $response ) ) { if ( isset( $cache[ $cache_key ] ) && is_array( $cache[ $cache_key ] ) ) { return $cache[ $cache_key ]['payload']; // return stale. } else { return array(); } } $results = json_decode( wp_remote_retrieve_body( $response ), true ); $related_posts = array(); if ( is_array( $results ) && ! empty( $results['hits'] ) ) { foreach ( $results['hits'] as $hit ) { $related_posts[] = array( 'id' => $hit['fields']['post_id'], ); } } // An empty array might indicate no related posts or that posts // are not yet synced to WordPress.com, so we cache for only 1 // minute in this case. if ( empty( $related_posts ) ) { $cache_ttl = 60; } else { $cache_ttl = 12 HOUR_IN_SECONDS; } // Update cache. if ( wp_using_ext_object_cache() ) { set_transient( $transient_name, $related_posts, $cache_ttl ); } else { // Copy all valid cache values. $new_cache = array(); foreach ( $cache as $k => $v ) { if ( is_array( $v ) && $v['expires'] > $now_ts ) { $new_cache[ $k ] = $v; } } // Set new cache value. $cache_expires = $cache_ttl + $now_ts; $new_cache[ $cache_key ] = array( 'expires' => $cache_expires, 'payload' => $related_posts, ); update_post_meta( $post_id, $cache_meta_key, $new_cache ); } return $related_posts; } /** * Filter out any hits that are not public anymore. * * @param array $related_posts - the related posts. * @uses get_post_stati, get_post_status * @return array / protected function filter_non_public_posts( array $related_posts ) { $public_stati = get_post_stati( array( 'public' => true ) ); $filtered = array(); foreach ( $related_posts as $hit ) { if ( in_array( get_post_status( $hit['id'] ), $public_stati, true ) ) { $filtered[] = $hit; } } return $filtered; } /* * Generates the author byline for the related post. * * @param int $post_id - the post ID. * @uses get_post_field, get_the_author_meta * @return string / protected function generate_related_post_display_author( $post_id ) { $post_author = get_post_field( 'post_author', $post_id ); $author_display_name = get_the_author_meta( 'display_name', $post_author ); if ( ! empty( $author_display_name ) ) { return $author_display_name; } return ''; } /* * Generates a context for the related content (second line in related post output). * Order of importance: * - First category (Not 'Uncategorized') * - First post tag * - Number of comments * * @param int $post_id - the post ID. * @uses get_the_category, get_the_terms, get_comments_number, number_format_i18n, __, _n * @return string / protected function generate_related_post_context_block( $post_id ) { $categories = get_the_category( $post_id ); if ( is_array( $categories ) ) { foreach ( $categories as $category ) { $cat_link = get_category_link( $category ); if ( 'uncategorized' !== $category->slug && '' !== trim( $category->name ) ) { return array( 'text' => trim( $category->name ), 'link' => $cat_link, ); } } } $tags = get_the_terms( $post_id, 'post_tag' ); if ( is_array( $tags ) ) { foreach ( $tags as $tag ) { $tag_link = get_tag_link( $tag ); if ( '' !== trim( $tag->name ) ) { return array( 'text' => trim( $tag->name ), 'link' => $tag_link, ); } } } $comment_count = get_comments_number( $post_id ); if ( $comment_count > 0 ) { $comments_string = sprintf( // Translators: amount of comments. _n( 'With %s comment', 'With %s comments', $comment_count, 'jetpack' ), number_format_i18n( $comment_count ) ); $comments_link = get_comments_link( $post_id ); return array( 'text' => $comments_string, 'link' => $comments_link, ); } $fallback_string = __( 'Similar post', 'jetpack' ); return array( 'text' => $fallback_string, 'link' => '', ); } /* * Generates a context for the related content (second line in related post output). * Order of importance: * - First category (Not 'Uncategorized') * - First post tag * - Number of comments * * @param int $post_id - the post ID. * @uses get_the_category, get_the_terms, get_comments_number, number_format_i18n, __, _n * @return string / protected function generate_related_post_context( $post_id ) { $categories = get_the_category( $post_id ); if ( is_array( $categories ) ) { foreach ( $categories as $category ) { if ( 'uncategorized' !== $category->slug && '' !== trim( $category->name ) ) { $post_cat_context = sprintf( // Translators: The category or tag name. esc_html_x( 'In "%s"', 'in {category/tag name}', 'jetpack' ), $category->name ); /* * Filter the "In Category" line displayed in the post context below each Related Post. * * @module related-posts * * @since 3.2.0 * * @param string $post_cat_context "In Category" line displayed in the post context below each Related Post. * @param array $category Array containing information about the category. / return apply_filters( 'jetpack_relatedposts_post_category_context', $post_cat_context, $category ); } } } $tags = get_the_terms( $post_id, 'post_tag' ); if ( is_array( $tags ) ) { foreach ( $tags as $tag ) { if ( '' !== trim( $tag->name ) ) { $post_tag_context = sprintf( // Translators: the category or tag name. _x( 'In "%s"', 'in {category/tag name}', 'jetpack' ), $tag->name ); /* * Filter the "In Tag" line displayed in the post context below each Related Post. * * @module related-posts * * @since 3.2.0 * * @param string $post_tag_context "In Tag" line displayed in the post context below each Related Post. * @param array $tag Array containing information about the tag. / return apply_filters( 'jetpack_relatedposts_post_tag_context', $post_tag_context, $tag ); } } } $comment_count = get_comments_number( $post_id ); if ( $comment_count > 0 ) { return sprintf( // Translators: amount of comments. _n( 'With %s comment', 'With %s comments', $comment_count, 'jetpack' ), number_format_i18n( $comment_count ) ); } return __( 'Similar post', 'jetpack' ); } /* * Logs clicks for clickthrough analysis and related result tuning. * * @param int $post_id - the post ID. * @param int $to_post_id - the to post ID. * @param int $link_position - the link position. / protected function log_click( $post_id, $to_post_id, $link_position ) { // phpcs:ignore VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable } /* * Determines if the current post is able to use related posts. * * @since 14.0 Checks for singular instead of single to allow usage on non-posts CPTs in block themes. * @uses self::get_options, is_admin, is_singular, apply_filters * @return bool / protected function enabled_for_request() { / * On block themes, allow usage on any singular view (post, page, CPT). * On classic themes, only allow usage on single posts by default. / $enabled_on_singular_views = wp_is_block_theme() ? is_singular() : is_single(); $enabled = $enabled_on_singular_views && ! is_attachment() && ! is_admin() && ! is_embed() && ( ! $this->allow_feature_toggle() \|\| $this->get_option( 'enabled' ) ); /* * Filter the Enabled value to allow related posts to be selectively enabled/disabled. * * @module related-posts * * @since 3.3.0 * * @param bool $enabled Should Related Posts be enabled on the current page. / return apply_filters( 'jetpack_relatedposts_filter_enabled_for_request', $enabled ); } /* * Adds filters. * * @uses self::enqueue_assets, self::setup_shortcode, add_filter / protected function action_frontend_init_page() { $this->enqueue_assets( true, true ); $this->setup_shortcode(); add_filter( 'the_content', array( $this, 'filter_add_target_to_dom' ), 40 ); } /* * Determines if the scripts need be enqueued. * * @return bool / protected function requires_scripts() { return ( ! ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) && ! has_block( 'jetpack/related-posts' ) && ! Blocks::is_fse_theme() ); } /* * Enqueues assets needed to do async loading of related posts. * * @param string $script - the script we're enqueing. * @param string $style - the style we're enqueing. * * @uses wp_enqueue_script, wp_enqueue_style, plugins_url / protected function enqueue_assets( $script, $style ) { $dependencies = is_customize_preview() ? array( 'customize-base' ) : array(); // Do not enqueue scripts unless they are required. if ( $script && $this->requires_scripts() ) { wp_enqueue_script( 'jetpack_related-posts', Assets::get_file_url_for_environment( '_inc/build/related-posts/related-posts.min.js', 'modules/related-posts/related-posts.js' ), $dependencies, self::VERSION, false ); $related_posts_js_options = array( /* * Filter each Related Post Heading structure. * * @since 4.0.0 * * @param string $str Related Post Heading structure. Default to h4. / 'post_heading' => apply_filters( 'jetpack_relatedposts_filter_post_heading', esc_attr( 'h4' ) ), ); wp_localize_script( 'jetpack_related-posts', 'related_posts_js_options', $related_posts_js_options ); } if ( $style ) { wp_enqueue_style( 'jetpack_related-posts', plugins_url( 'related-posts.css', __FILE__ ), array(), self::VERSION ); wp_style_add_data( 'jetpack_related-posts', 'rtl', 'replace' ); add_action( 'amp_post_template_css', array( $this, 'render_amp_reader_mode_css' ) ); } } /* * Render AMP's reader mode CSS. / public function render_amp_reader_mode_css() { echo file_get_contents( __DIR__ . '/related-posts.css' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped, WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents -- this is loading a CSS file. } /* * Sets up the shortcode processing. * * @uses add_filter, add_shortcode / protected function setup_shortcode() { add_filter( 'the_content', array( $this, 'test_for_shortcode' ), 0 ); add_shortcode( self::SHORTCODE, array( $this, 'get_client_rendered_html' ) ); } /* * Return status of related posts toggle. / protected function allow_feature_toggle() { if ( null === $this->allow_feature_toggle ) { /* * Filter the display of the Related Posts toggle in Settings > Reading. * * @module related-posts * * @since 2.8.0 * * @param bool $allow_feature_toggle Display a feature toggle. Default to false. / $this->allow_feature_toggle = apply_filters( 'jetpack_relatedposts_filter_allow_feature_toggle', false ); } return $this->allow_feature_toggle; } /* * =================================================== * FUNCTIONS EXPOSING RELATED POSTS IN THE WP REST API * =================================================== / /* * Add Related Posts to the REST API Post response. * * @since 4.4.0 * * @action rest_api_init * @uses register_rest_field, self::rest_get_related_posts / public function rest_register_related_posts() { /* This filter is already documented in class.json-api-endpoints.php / $post_types = apply_filters( 'rest_api_allowed_post_types', array( 'post', 'page', 'revision' ) ); foreach ( $post_types as $post_type ) { register_rest_field( $post_type, 'jetpack-related-posts', array( 'get_callback' => array( $this, 'rest_get_related_posts' ), 'update_callback' => null, 'schema' => null, ) ); } } /* * Build an array of Related Posts. * By default returns cached results that are stored for up to 12 hours. * * @since 4.4.0 * * @param array $object Details of current post. * * @uses self::get_for_post_id * * @return array / public function rest_get_related_posts( $object ) { if ( ! isset( $object['id'] ) ) { return array(); } // If the Related Posts option is turned off, don't get the related posts. $options = \Jetpack_Options::get_option( 'relatedposts', array() ); if ( empty( $options['enabled'] ) \|\| ! $options['enabled'] ) { return array(); } // If the current post don't contain a Related Posts block, don't get the related posts. if ( ! has_block( 'jetpack/related-posts' ) ) { return array(); } return $this->get_for_post_id( $object['id'], array( 'size' => 6 ) ); } } /* * The raw related posts class can be used by other plugins or themes * to get related content. This class wraps the existing RelatedPosts * logic thus we never want to add anything to the DOM or do anything * for event hooks. We will also not present any settings for this * class and keep it enabled as calls to this class are done * programmatically. / class Jetpack_RelatedPosts_Raw extends Jetpack_RelatedPosts { //phpcs:ignore Generic.Classes.OpeningBraceSameLine.ContentAfterBrace, Generic.Files.OneObjectStructurePerFile.MultipleFound /* * The query name we want to look up. * * @var string / protected $query_name; /* * Allows callers of this class to tag each query with a unique name for tracking purposes. * * @param string $name - the name of the query. * @return Jetpack_RelatedPosts_Raw / public function set_query_name( $name ) { $this->query_name = (string) $name; return $this; } /* * Initialize admin. / public function action_admin_init() {} /* * Initialize front end. / public function action_frontend_init() {} /* * Get options. / public function get_options() { return array( 'enabled' => true, ); } /* * Workhorse method to return array of related posts ids matched by Elasticsearch. * * @param int $post_id - the post ID. * @param int $size - size of the post. * @param array $filters - filters we're using. * @uses wp_remote_post, is_wp_error, wp_remote_retrieve_body * @return array / protected function get_related_posts( $post_id, $size, array $filters ) { $hits = $this->filter_non_public_posts( $this->get_related_post_ids( $post_id, $size, $filters ) ); /* This filter is already documented in modules/related-posts/related-posts.php */ $hits = apply_filters( 'jetpack_relatedposts_filter_hits', $hits, $post_id ); return $hits; } }

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