1341 lines
40 KiB
PHP
1341 lines
40 KiB
PHP
<?php
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class Jetpack_RelatedPosts {
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const VERSION = '20150408';
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const SHORTCODE = 'jetpack-related-posts';
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/**
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* Creates and returns a static instance of Jetpack_RelatedPosts.
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*
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* @return Jetpack_RelatedPosts
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*/
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public static function init() {
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static $instance = NULL;
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if ( ! $instance ) {
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if ( class_exists('WPCOM_RelatedPosts') && method_exists( 'WPCOM_RelatedPosts', 'init' ) ) {
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$instance = WPCOM_RelatedPosts::init();
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} else {
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$instance = new Jetpack_RelatedPosts(
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get_current_blog_id(),
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Jetpack_Options::get_option( 'id' )
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);
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}
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}
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return $instance;
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}
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/**
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* Creates and returns a static instance of Jetpack_RelatedPosts_Raw.
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*
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* @return Jetpack_RelatedPosts
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*/
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public static function init_raw() {
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static $instance = NULL;
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if ( ! $instance ) {
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if ( class_exists('WPCOM_RelatedPosts') && method_exists( 'WPCOM_RelatedPosts', 'init_raw' ) ) {
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$instance = WPCOM_RelatedPosts::init_raw();
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} else {
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$instance = new Jetpack_RelatedPosts_Raw(
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get_current_blog_id(),
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Jetpack_Options::get_option( 'id' )
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);
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}
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}
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return $instance;
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}
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protected $_blog_id_local;
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protected $_blog_id_wpcom;
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protected $_options;
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protected $_allow_feature_toggle;
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protected $_blog_charset;
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protected $_convert_charset;
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protected $_previous_post_id;
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protected $_found_shortcode = false;
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/**
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* Constructor for Jetpack_RelatedPosts.
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*
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* @param int $blog_id_local
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* @param int $blog_id_wpcom
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* @uses get_option, add_action, apply_filters
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* @return null
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*/
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public function __construct( $blog_id_local, $blog_id_wpcom ) {
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$this->_blog_id_local = $blog_id_local;
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$this->_blog_id_wpcom = $blog_id_wpcom;
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$this->_blog_charset = get_option( 'blog_charset' );
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$this->_convert_charset = ( function_exists( 'iconv' ) && ! preg_match( '/^utf\-?8$/i', $this->_blog_charset ) );
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add_action( 'admin_init', array( $this, 'action_admin_init' ) );
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add_action( 'wp', array( $this, 'action_frontend_init' ) );
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if ( ! class_exists( 'Jetpack_Media_Summary' ) ) {
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jetpack_require_lib( 'class.media-summary' );
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}
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}
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/**
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* =================
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* ACTIONS & FILTERS
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* =================
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*/
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/**
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* Add a checkbox field to Settings > Reading for enabling related posts.
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*
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* @action admin_init
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* @uses add_settings_field, __, register_setting, add_action
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* @return null
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*/
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public function action_admin_init() {
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// Add the setting field [jetpack_relatedposts] and place it in Settings > Reading
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add_settings_field( 'jetpack_relatedposts', '<span id="jetpack_relatedposts">' . __( 'Related posts', 'jetpack' ) . '</span>', array( $this, 'print_setting_html' ), 'reading' );
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register_setting( 'reading', 'jetpack_relatedposts', array( $this, 'parse_options' ) );
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add_action('admin_head', array( $this, 'print_setting_head' ) );
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if( 'options-reading.php' == $GLOBALS['pagenow'] ) {
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// Enqueue style for live preview on the reading settings page
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$this->_enqueue_assets( false, true );
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}
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}
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/**
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* Load related posts assets if it's a elegiable frontend page or execute search and return JSON if it's an endpoint request.
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*
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* @global $_GET
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* @action wp
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* @uses add_shortcode, get_the_ID
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* @returns null
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*/
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public function action_frontend_init() {
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// Add a shortcode handler that outputs nothing, this gets overridden later if we can display related content
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add_shortcode( self::SHORTCODE, array( $this, 'get_target_html_unsupported' ) );
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if ( ! $this->_enabled_for_request() )
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return;
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if ( isset( $_GET['relatedposts'] ) ) {
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$excludes = array();
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if ( isset( $_GET['relatedposts_exclude'] ) ) {
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$excludes = explode( ',', $_GET['relatedposts_exclude'] );
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}
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$this->_action_frontend_init_ajax( $excludes );
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} else {
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if ( isset( $_GET['relatedposts_hit'], $_GET['relatedposts_origin'], $_GET['relatedposts_position'] ) ) {
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$this->_log_click( $_GET['relatedposts_origin'], get_the_ID(), $_GET['relatedposts_position'] );
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$this->_previous_post_id = (int) $_GET['relatedposts_origin'];
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}
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$this->_action_frontend_init_page();
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}
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}
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/**
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* Adds a target to the post content to load related posts into if a shortcode for it did not already exist.
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*
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* @filter the_content
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* @param string $content
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* @returns string
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*/
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public function filter_add_target_to_dom( $content ) {
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if ( !$this->_found_shortcode ) {
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$content .= "\n" . $this->get_target_html();
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}
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return $content;
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}
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/**
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* Looks for our shortcode on the unfiltered content, this has to execute early.
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*
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* @filter the_content
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* @param string $content
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* @uses has_shortcode
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* @returns string
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*/
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public function test_for_shortcode( $content ) {
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$this->_found_shortcode = has_shortcode( $content, self::SHORTCODE );
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return $content;
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}
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/**
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* Returns the HTML for the related posts section.
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*
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* @uses esc_html__, apply_filters
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* @returns string
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*/
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public function get_target_html() {
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$options = $this->get_options();
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if ( $options['show_headline'] ) {
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$headline = sprintf(
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'<h3 class="jp-relatedposts-headline"><em>%s</em></h3>',
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esc_html__( 'Related', 'jetpack' )
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);
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} else {
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$headline = '';
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}
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/**
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* Filter the Related Posts headline.
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*
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* @module related-posts
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*
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* @since 3.0.0
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*
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* @param string $headline Related Posts heading.
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*/
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$headline = apply_filters( 'jetpack_relatedposts_filter_headline', $headline );
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if ( $this->_previous_post_id ) {
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$exclude = "data-exclude='{$this->_previous_post_id}'";
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} else {
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$exclude = "";
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}
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return <<<EOT
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<div id='jp-relatedposts' class='jp-relatedposts' $exclude>
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$headline
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</div>
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EOT;
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}
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/**
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* 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.
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*
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* @returns string
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*/
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public function get_target_html_unsupported() {
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return "\n\n<!-- Jetpack Related Posts is not supported in this context. -->\n\n";
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}
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/**
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* ========================
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* PUBLIC UTILITY FUNCTIONS
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* ========================
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*/
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/**
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* Gets options set for Jetpack_RelatedPosts and merge with defaults.
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*
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* @uses Jetpack_Options::get_option, apply_filters
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* @return array
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*/
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public function get_options() {
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if ( null === $this->_options ) {
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$this->_options = Jetpack_Options::get_option( 'relatedposts' );
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if ( ! is_array( $this->_options ) )
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$this->_options = array();
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if ( ! isset( $this->_options['enabled'] ) )
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$this->_options['enabled'] = true;
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if ( ! isset( $this->_options['show_headline'] ) )
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$this->_options['show_headline'] = true;
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if ( ! isset( $this->_options['show_thumbnails'] ) )
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$this->_options['show_thumbnails'] = false;
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if ( empty( $this->_options['size'] ) || (int)$this->_options['size'] < 1 )
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$this->_options['size'] = 3;
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/**
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* Filter Related Posts basic options.
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*
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* @module related-posts
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*
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* @since 2.8.0
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*
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* @param array $this->_options Array of basic Related Posts options.
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*/
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$this->_options = apply_filters( 'jetpack_relatedposts_filter_options', $this->_options );
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}
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return $this->_options;
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}
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/**
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* Parses input and returnes normalized options array.
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*
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* @param array $input
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* @uses self::get_options
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* @return array
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*/
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public function parse_options( $input ) {
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$current = $this->get_options();
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if ( !is_array( $input ) )
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$input = array();
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if ( isset( $input['enabled'] ) && '1' == $input['enabled'] ) {
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$current['enabled'] = true;
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$current['show_headline'] = ( isset( $input['show_headline'] ) && '1' == $input['show_headline'] );
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$current['show_thumbnails'] = ( isset( $input['show_thumbnails'] ) && '1' == $input['show_thumbnails'] );
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} else {
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$current['enabled'] = false;
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}
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if ( isset( $input['size'] ) && (int)$input['size'] > 0 )
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$current['size'] = (int)$input['size'];
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else
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$current['size'] = null;
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return $current;
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}
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/**
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* HTML for admin settings page.
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*
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* @uses self::get_options, checked, esc_html__
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* @returns null
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*/
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public function print_setting_html() {
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$options = $this->get_options();
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$ui_settings_template = <<<EOT
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<ul id="settings-reading-relatedposts-customize">
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<li>
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<label><input name="jetpack_relatedposts[show_headline]" type="checkbox" value="1" %s /> %s</label>
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</li>
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<li>
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<label><input name="jetpack_relatedposts[show_thumbnails]" type="checkbox" value="1" %s /> %s</label>
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</li>
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</ul>
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<div id='settings-reading-relatedposts-preview'>
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%s
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<div id="jp-relatedposts" class="jp-relatedposts"></div>
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</div>
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EOT;
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$ui_settings = sprintf(
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$ui_settings_template,
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checked( $options['show_headline'], true, false ),
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esc_html__( 'Show a "Related" header to more clearly separate the related section from posts', 'jetpack' ),
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checked( $options['show_thumbnails'], true, false ),
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esc_html__( 'Use a large and visually striking layout', 'jetpack' ),
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esc_html__( 'Preview:', 'jetpack' )
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);
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if ( !$this->_allow_feature_toggle() ) {
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$template = <<<EOT
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<input type="hidden" name="jetpack_relatedposts[enabled]" value="1" />
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%s
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EOT;
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printf(
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$template,
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$ui_settings
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);
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} else {
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$template = <<<EOT
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<ul id="settings-reading-relatedposts">
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<li>
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<label><input type="radio" name="jetpack_relatedposts[enabled]" value="0" class="tog" %s /> %s</label>
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</li>
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<li>
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<label><input type="radio" name="jetpack_relatedposts[enabled]" value="1" class="tog" %s /> %s</label>
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%s
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</li>
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</ul>
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EOT;
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printf(
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$template,
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checked( $options['enabled'], false, false ),
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esc_html__( 'Hide related content after posts', 'jetpack' ),
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checked( $options['enabled'], true, false ),
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esc_html__( 'Show related content after posts', 'jetpack' ),
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$ui_settings
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);
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}
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}
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/**
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* Head JS/CSS for admin settings page.
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*
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* @uses esc_html__
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* @returns null
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*/
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public function print_setting_head() {
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// only dislay the Related Posts JavaScript on the Reading Settings Admin Page
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$current_screen = get_current_screen();
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if ( is_null( $current_screen ) ) {
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return;
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}
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if( 'options-reading' != $current_screen->id )
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return;
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$related_headline = sprintf(
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'<h3 class="jp-relatedposts-headline"><em>%s</em></h3>',
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esc_html__( 'Related', 'jetpack' )
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);
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$href_params = 'class="jp-relatedposts-post-a" href="#jetpack_relatedposts" rel="nofollow" data-origin="0" data-position="0"';
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$related_with_images = <<<EOT
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<div class="jp-relatedposts-items jp-relatedposts-items-visual">
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<div class="jp-relatedposts-post jp-relatedposts-post0 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image">
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<a $href_params>
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<img class="jp-relatedposts-post-img" src="http://jetpackme.files.wordpress.com/2014/08/1-wpios-ipad-3-1-viewsite.png?w=350&h=200&crop=1" width="350" alt="Big iPhone/iPad Update Now Available" scale="0">
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</a>
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<h4 class="jp-relatedposts-post-title">
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<a $href_params>Big iPhone/iPad Update Now Available</a>
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</h4>
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<p class="jp-relatedposts-post-excerpt">Big iPhone/iPad Update Now Available</p>
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<p class="jp-relatedposts-post-context">In "Mobile"</p>
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</div>
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<div class="jp-relatedposts-post jp-relatedposts-post1 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image">
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<a $href_params>
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<img class="jp-relatedposts-post-img" src="http://jetpackme.files.wordpress.com/2014/08/wordpress-com-news-wordpress-for-android-ui-update2.jpg?w=350&h=200&crop=1" width="350" alt="The WordPress for Android App Gets a Big Facelift" scale="0">
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</a>
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<h4 class="jp-relatedposts-post-title">
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<a $href_params>The WordPress for Android App Gets a Big Facelift</a>
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</h4>
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<p class="jp-relatedposts-post-excerpt">The WordPress for Android App Gets a Big Facelift</p>
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<p class="jp-relatedposts-post-context">In "Mobile"</p>
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</div>
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<div class="jp-relatedposts-post jp-relatedposts-post2 jp-relatedposts-post-thumbs" data-post-id="0" data-post-format="image">
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<a $href_params>
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<img class="jp-relatedposts-post-img" src="http://jetpackme.files.wordpress.com/2014/08/videopresswedding.jpg?w=350&h=200&crop=1" width="350" alt="Upgrade Focus: VideoPress For Weddings" scale="0">
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</a>
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<h4 class="jp-relatedposts-post-title">
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<a $href_params>Upgrade Focus: VideoPress For Weddings</a>
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</h4>
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<p class="jp-relatedposts-post-excerpt">Upgrade Focus: VideoPress For Weddings</p>
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<p class="jp-relatedposts-post-context">In "Upgrade"</p>
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</div>
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</div>
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EOT;
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$related_with_images = str_replace( "\n", '', $related_with_images );
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$related_without_images = <<<EOT
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<div class="jp-relatedposts-items jp-relatedposts-items-minimal">
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<p class="jp-relatedposts-post jp-relatedposts-post0" data-post-id="0" data-post-format="image">
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<span class="jp-relatedposts-post-title"><a $href_params>Big iPhone/iPad Update Now Available</a></span>
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<span class="jp-relatedposts-post-context">In "Mobile"</span>
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</p>
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<p class="jp-relatedposts-post jp-relatedposts-post1" data-post-id="0" data-post-format="image">
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<span class="jp-relatedposts-post-title"><a $href_params>The WordPress for Android App Gets a Big Facelift</a></span>
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<span class="jp-relatedposts-post-context">In "Mobile"</span>
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</p>
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<p class="jp-relatedposts-post jp-relatedposts-post2" data-post-id="0" data-post-format="image">
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<span class="jp-relatedposts-post-title"><a $href_params>Upgrade Focus: VideoPress For Weddings</a></span>
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<span class="jp-relatedposts-post-context">In "Upgrade"</span>
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</p>
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</div>
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EOT;
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$related_without_images = str_replace( "\n", '', $related_without_images );
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if ( $this->_allow_feature_toggle() ) {
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$extra_css = '#settings-reading-relatedposts-customize { padding-left:2em; margin-top:.5em; }';
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} else {
|
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$extra_css = '';
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}
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|
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echo <<<EOT
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|
<style type="text/css">
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#settings-reading-relatedposts .disabled { opacity:.5; filter:Alpha(opacity=50); }
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#settings-reading-relatedposts-preview .jp-relatedposts { background:#fff; padding:.5em; width:75%; }
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$extra_css
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</style>
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|
<script type="text/javascript">
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jQuery( document ).ready( function($) {
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var update_ui = function() {
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var is_enabled = true;
|
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if ( 'radio' == $( 'input[name="jetpack_relatedposts[enabled]"]' ).attr('type') ) {
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if ( '0' == $( 'input[name="jetpack_relatedposts[enabled]"]:checked' ).val() ) {
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is_enabled = false;
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}
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}
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if ( is_enabled ) {
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$( '#settings-reading-relatedposts-customize' )
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.removeClass( 'disabled' )
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.find( 'input' )
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.attr( 'disabled', false );
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$( '#settings-reading-relatedposts-preview' )
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.removeClass( 'disabled' );
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} else {
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$( '#settings-reading-relatedposts-customize' )
|
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.addClass( 'disabled' )
|
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.find( 'input' )
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.attr( 'disabled', true );
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$( '#settings-reading-relatedposts-preview' )
|
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.addClass( 'disabled' );
|
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}
|
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};
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|
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var update_preview = function() {
|
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var html = '';
|
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if ( $( 'input[name="jetpack_relatedposts[show_headline]"]:checked' ).size() ) {
|
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html += '$related_headline';
|
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}
|
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if ( $( 'input[name="jetpack_relatedposts[show_thumbnails]"]:checked' ).size() ) {
|
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html += '$related_with_images';
|
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} else {
|
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html += '$related_without_images';
|
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}
|
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$( '#settings-reading-relatedposts-preview .jp-relatedposts' )
|
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.html( html )
|
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.show();
|
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};
|
|
|
|
// 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;
|
|
}
|
|
|
|
/**
|
|
* Gets an array of related posts that match the given post_id.
|
|
*
|
|
* @param int $post_id
|
|
* @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 string $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
|
|
* @param array $args
|
|
* @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 ) )
|
|
$sanitized_post_types[] = $pt;
|
|
}
|
|
if ( ! empty( $sanitized_post_types ) )
|
|
$filters[] = array( 'terms' => array( 'post_type' => $sanitized_post_types ) );
|
|
} else if ( in_array( $args['post_type'], $valid_post_types ) && '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'] ) ) {
|
|
foreach ( $args['exclude_post_ids'] as $exclude_post_id) {
|
|
$exclude_post_id = (int)$exclude_post_id;
|
|
|
|
if ( $exclude_post_id > 0 )
|
|
$filters[] = array( 'not' => array( 'term' => array( 'post_id' => $exclude_post_id ) ) );
|
|
}
|
|
}
|
|
|
|
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.
|
|
*
|
|
* @param array $date_range
|
|
* @return array
|
|
*/
|
|
protected function _get_coalesced_range( array $date_range ) {
|
|
$now = time();
|
|
$coalesce_time = $this->_blog_id_wpcom % 86400;
|
|
$current_time = $now - strtotime( 'today', $now );
|
|
|
|
if ( $current_time < $coalesce_time && '01' == date( 'd', $now ) ) {
|
|
// Move back 1 period
|
|
return array(
|
|
'from' => date( 'Y-m-01', strtotime( '-1 month', $date_range['from'] ) ) . ' ' . date( 'H:i:s', $coalesce_time ),
|
|
'to' => date( 'Y-m-01', $date_range['to'] ) . ' ' . date( 'H:i:s', $coalesce_time ),
|
|
);
|
|
} else {
|
|
// Use current period
|
|
return array(
|
|
'from' => date( 'Y-m-01', $date_range['from'] ) . ' ' . date( 'H:i:s', $coalesce_time ),
|
|
'to' => date( 'Y-m-01', strtotime( '+1 month', $date_range['to'] ) ) . ' ' . date( 'H:i:s', $coalesce_time ),
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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 null
|
|
*/
|
|
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();
|
|
|
|
$related_posts = $this->get_for_post_id(
|
|
get_the_ID(),
|
|
array(
|
|
'exclude_post_ids' => $excludes,
|
|
)
|
|
);
|
|
|
|
$options = $this->get_options();
|
|
|
|
$response = array(
|
|
'version' => self::VERSION,
|
|
'show_thumbnails' => (bool) $options['show_thumbnails'],
|
|
'items' => array(),
|
|
);
|
|
|
|
if ( count( $related_posts ) == $options['size'] )
|
|
$response['items'] = $related_posts;
|
|
|
|
echo json_encode( $response );
|
|
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Returns a UTF-8 encoded array of post information for the given post_id
|
|
*
|
|
* @param int $post_id
|
|
* @param int $position
|
|
* @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
|
|
*/
|
|
protected 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 ) ),
|
|
'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
|
|
*
|
|
* @param string nofollow Link rel attribute for Related Posts' link. Default is nofollow.
|
|
* @param int $post->ID Post ID.
|
|
*/
|
|
'rel' => apply_filters( 'jetpack_relatedposts_filter_post_link_rel', 'nofollow', $post->ID ),
|
|
/**
|
|
* Filter the context displayed below each Related Post.
|
|
*
|
|
* @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 string $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
|
|
),
|
|
'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.
|
|
*
|
|
* @param string $post_title
|
|
* @param string $post_content
|
|
* @uses strip_shortcodes, wp_trim_words, __
|
|
* @return string
|
|
*/
|
|
protected function _get_title( $post_title, $post_content ) {
|
|
if ( ! empty( $post_title ) ) {
|
|
return wp_strip_all_tags( $post_title );
|
|
}
|
|
|
|
$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
|
|
* @param string $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
|
|
* @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 ) {
|
|
$options = $this->get_options();
|
|
$image_params = array(
|
|
'src' => '',
|
|
'width' => 0,
|
|
'height' => 0,
|
|
);
|
|
|
|
if ( ! $options['show_thumbnails'] ) {
|
|
return $image_params;
|
|
}
|
|
|
|
/**
|
|
* 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 ) ) {
|
|
$image_params['width'] = $thumbnail_size['width'];
|
|
$image_params['height'] = $thumbnail_size['height'];
|
|
$image_params['src'] = Jetpack_PostImages::fit_image_url(
|
|
$img_url,
|
|
$thumbnail_size['width'],
|
|
$thumbnail_size['height']
|
|
);
|
|
}
|
|
}
|
|
|
|
return $image_params;
|
|
}
|
|
|
|
/**
|
|
* Returns the string UTF-8 encoded
|
|
*
|
|
* @param string $text
|
|
* @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
|
|
* @param int $size
|
|
* @param array $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
|
|
* @param int $size
|
|
* @param array $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 ) {
|
|
$now_ts = time();
|
|
$cache_meta_key = '_jetpack_related_posts_cache';
|
|
|
|
$body = array(
|
|
'size' => (int) $size,
|
|
);
|
|
|
|
if ( !empty( $filters ) )
|
|
$body['filter'] = array( 'and' => $filters );
|
|
|
|
// Load all cached values
|
|
$cache = get_post_meta( $post_id, $cache_meta_key, true );
|
|
if ( empty( $cache ) )
|
|
$cache = array();
|
|
|
|
// Build cache key
|
|
$cache_key = md5( serialize( $body ) );
|
|
|
|
// 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' ];
|
|
}
|
|
|
|
$response = wp_remote_post(
|
|
"https://public-api.wordpress.com/rest/v1/sites/{$this->_blog_id_wpcom}/posts/$post_id/related/",
|
|
array(
|
|
'timeout' => 10,
|
|
'user-agent' => 'jetpack_related_posts',
|
|
'sslverify' => true,
|
|
'body' => $body,
|
|
)
|
|
);
|
|
|
|
// Oh no... return nothing don't cache errors.
|
|
if ( is_wp_error( $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'],
|
|
);
|
|
}
|
|
}
|
|
|
|
// 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 if valid
|
|
if ( ! empty( $related_posts ) ) {
|
|
$new_cache[ $cache_key ] = array(
|
|
'expires' => 12 * HOUR_IN_SECONDS + $now_ts,
|
|
'payload' => $related_posts,
|
|
);
|
|
}
|
|
|
|
// Update cache
|
|
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
|
|
* @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 ) ) {
|
|
$filtered[] = $hit;
|
|
}
|
|
}
|
|
return $filtered;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @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(
|
|
_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(
|
|
_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(
|
|
_n( 'With 1 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.
|
|
*
|
|
* @return null
|
|
*/
|
|
protected function _log_click( $post_id, $to_post_id, $link_position ) {
|
|
|
|
}
|
|
|
|
/**
|
|
* Determines if the current post is able to use related posts.
|
|
*
|
|
* @uses self::get_options, is_admin, is_single, apply_filters
|
|
* @return bool
|
|
*/
|
|
protected function _enabled_for_request() {
|
|
// Default to enabled
|
|
$enabled = true;
|
|
|
|
// Must have feature enabled
|
|
$options = $this->get_options();
|
|
if ( ! $options['enabled'] ) {
|
|
$enabled = false;
|
|
}
|
|
|
|
// Only run for frontend pages
|
|
if ( is_admin() ) {
|
|
$enabled = false;
|
|
}
|
|
|
|
// Only run for standalone posts
|
|
if ( ! is_single() ) {
|
|
$enabled = false;
|
|
}
|
|
|
|
/**
|
|
* Filter the Enabled value to allow related posts to be shown on pages as well.
|
|
*
|
|
* @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 and enqueues assets.
|
|
*
|
|
* @uses self::_enqueue_assets, self::_setup_shortcode, add_filter
|
|
* @return null
|
|
*/
|
|
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 );
|
|
}
|
|
|
|
/**
|
|
* Enqueues assets needed to do async loading of related posts.
|
|
*
|
|
* @uses wp_enqueue_script, wp_enqueue_style, plugins_url
|
|
* @return null
|
|
*/
|
|
protected function _enqueue_assets( $script, $style ) {
|
|
if ( $script ) {
|
|
wp_enqueue_script( 'jetpack_related-posts', plugins_url( 'related-posts.js', __FILE__ ), array( 'jquery' ), self::VERSION );
|
|
$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 ){
|
|
if( is_rtl() ) {
|
|
wp_enqueue_style( 'jetpack_related-posts', plugins_url( 'rtl/related-posts-rtl.css', __FILE__ ), array(), self::VERSION );
|
|
} else {
|
|
wp_enqueue_style( 'jetpack_related-posts', plugins_url( 'related-posts.css', __FILE__ ), array(), self::VERSION );
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Sets up the shortcode processing.
|
|
*
|
|
* @uses add_filter, add_shortcode
|
|
* @return null
|
|
*/
|
|
protected function _setup_shortcode() {
|
|
add_filter( 'the_content', array( $this, 'test_for_shortcode' ), 0 );
|
|
|
|
add_shortcode( self::SHORTCODE, array( $this, 'get_target_html' ) );
|
|
}
|
|
|
|
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 false 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;
|
|
}
|
|
}
|
|
|
|
class Jetpack_RelatedPosts_Raw extends Jetpack_RelatedPosts {
|
|
protected $_query_name;
|
|
|
|
/**
|
|
* Allows callers of this class to tag each query with a unique name for tracking purposes.
|
|
*
|
|
* @param string $name
|
|
* @return Jetpack_RelatedPosts_Raw
|
|
*/
|
|
public function set_query_name( $name ) {
|
|
$this->_query_name = (string) $name;
|
|
return $this;
|
|
}
|
|
|
|
/**
|
|
* 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 is done
|
|
* programmatically.
|
|
*/
|
|
public function action_admin_init() {}
|
|
public function action_frontend_init() {}
|
|
public function get_options() {
|
|
return array(
|
|
'enabled' => true,
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Workhorse method to return array of related posts ids matched by ElasticSearch.
|
|
*
|
|
* @param int $post_id
|
|
* @param int $size
|
|
* @param array $filters
|
|
* @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;
|
|
}
|
|
}
|