%PDF-
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Mini Shell
Mini Shell
<?php
/**
* This code adds the Facebook metadata.
*
* @since 0.9.0
* @package RankMath
* @subpackage RankMath\OpenGraph
* @author Rank Math <support@rankmath.com>
*/
namespace RankMath\OpenGraph;
use RankMath\Helper;
use RankMath\Paper\Paper;
use RankMath\Helpers\Str;
defined( 'ABSPATH' ) || exit;
/**
* Facebook class.
*/
class Facebook extends OpenGraph {
/**
* Network slug.
*
* @var string
*/
public $network = 'facebook';
/**
* Metakey prefix.
*
* @var string
*/
public $prefix = 'facebook';
/**
* The Constructor.
*/
public function __construct() {
$this->hooks();
add_filter( 'jetpack_enable_open_graph', '__return_false' );
parent::__construct();
}
/**
* Hooks.
*/
private function hooks() {
if ( isset( $GLOBALS['fb_ver'] ) || class_exists( 'Facebook_Loader', false ) ) {
$this->filter( 'fb_meta_tags', 'facebook_filter', 10, 1 );
return;
}
$this->filter( 'language_attributes', 'add_namespace', 15 );
$this->action( 'rank_math/opengraph/facebook', 'locale', 1 );
$this->action( 'rank_math/opengraph/facebook', 'type', 5 );
$this->action( 'rank_math/opengraph/facebook', 'title', 10 );
$this->action( 'rank_math/opengraph/facebook', 'description', 11 );
$this->action( 'rank_math/opengraph/facebook', 'url', 12 );
$this->action( 'rank_math/opengraph/facebook', 'site_name', 13 );
$this->action( 'rank_math/opengraph/facebook', 'website', 14 );
$this->action( 'rank_math/opengraph/facebook', 'site_owner', 20 );
$this->action( 'rank_math/opengraph/facebook', 'image', 30 );
}
/**
* Filter the Facebook plugins metadata.
*
* @param array $meta_tags The array to fix.
* @return array
*/
public function facebook_filter( $meta_tags ) {
$meta_tags['http://ogp.me/ns#type'] = $this->type( false );
$meta_tags['http://ogp.me/ns#title'] = $this->title( false );
// Filter the locale too because the Facebook plugin locale code is not as good as ours.
$meta_tags['http://ogp.me/ns#locale'] = $this->locale( false );
$desc = $this->description( false );
if ( ! empty( $desc ) ) {
$meta_tags['http://ogp.me/ns#description'] = $desc;
}
return $meta_tags;
}
/**
* Adds prefix attributes to the <html> tag.
*
* @param string $input The input namespace string.
* @return string
*/
public function add_namespace( $input ) {
return $input . ' prefix="og: https://ogp.me/ns#"';
}
/**
* Output the locale, doing some conversions to make sure the proper Facebook locale is outputted.
*
* @see http://www.facebook.com/translations/FacebookLocales.xml for the list of supported locales
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*
* @param bool $echo Whether to echo or return the locale.
* @return string
*/
public function locale( $echo = true ) {
$locale = get_locale();
$locale = Facebook_Locale::sanitize( $locale );
$locale = Facebook_Locale::validate( $locale );
if ( $echo ) {
$this->tag( 'og:locale', $locale );
}
return $locale;
}
/**
* Output the OpenGraph type.
*
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/object/
*
* @param bool $echo Whether to echo or return the type.
* @return string
*/
public function type( $echo = true ) {
$type = $this->get_type();
if ( is_singular() ) {
if ( 'article' === $type && ! is_front_page() ) {
$this->action( 'rank_math/opengraph/facebook', 'article_author', 15 );
$this->action( 'rank_math/opengraph/facebook', 'tags', 16 );
$this->action( 'rank_math/opengraph/facebook', 'category', 17 );
}
$this->action( 'rank_math/opengraph/facebook', 'publish_date', 19 );
}
/**
* Allow changing the OpenGraph type of the page.
*
* @param string $type The OpenGraph type string.
*/
$type = $this->do_filter( 'opengraph/type', $type );
if ( Str::is_non_empty( $type ) && $echo ) {
$this->tag( 'og:type', $type );
}
return $type;
}
/**
* Get type.
*
* @return string
*/
private function get_type() {
if ( is_front_page() || is_home() ) {
return 'website';
}
if ( is_author() ) {
return 'profile';
}
return $this->is_product() ? 'product' : 'article';
}
/**
* Outputs the SEO title as OpenGraph title.
*
* @copyright Copyright (C) 2008-2019, Yoast BV
* The following code is a derivative work of the code from the Yoast(https://github.com/Yoast/wordpress-seo/), which is licensed under GPL v3.
*
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*
* @param bool $echo Whether or not to echo the output.
*
* @return string
*/
public function title( $echo = true ) {
$title = trim( $this->get_title() );
if ( $echo ) {
$this->tag( 'og:title', $title );
}
return $title;
}
/**
* Output the OpenGraph description, specific OG description first, if not, grab the meta description.
*
* @param bool $echo Whether to echo or return the description.
* @return string
*/
public function description( $echo = true ) {
$desc = trim( $this->get_description() );
if ( $echo ) {
$this->tag( 'og:description', $desc );
}
return $desc;
}
/**
* Output the canonical URL for the OpenGraph URL.
*
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*/
public function url() {
/**
* Filter the OpenGraph URL.
*/
$url = $this->do_filter( 'opengraph/url', esc_url( Paper::get()->get_canonical() ) );
$this->tag( 'og:url', $url );
}
/**
* Output the site name straight from the blog info.
*/
public function site_name() {
$this->tag( 'og:site_name', Helper::get_settings( 'titles.website_name', get_bloginfo( 'name' ) ) );
}
/**
* Outputs the websites FB page.
*
* @link https://developers.facebook.com/blog/post/2013/06/19/platform-updates--new-open-graph-tags-for-media-publishers-and-more/
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*/
public function website() {
$site = Helper::get_settings( 'titles.social_url_facebook' );
if ( 'article' === $this->type( false ) && '' !== $site ) {
$this->tag( 'article:publisher', $site );
}
}
/**
* Outputs the site owner.
*
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*/
public function site_owner() {
$app_id = Helper::get_settings( 'titles.facebook_app_id' );
if ( 0 !== absint( $app_id ) ) {
$this->tag( 'fb:app_id', $app_id );
return;
}
$admins = Helper::get_settings( 'titles.facebook_admin_id' );
if ( '' !== trim( $admins ) ) {
$this->tag( 'fb:admins', $admins );
return;
}
}
/**
* Create new Image class and get the images to set the `og:image`.
*
* @param string|bool $image Optional. Image URL.
*/
public function image( $image = false ) {
$images = new Image( $image, $this );
$images->show();
}
/**
* Outputs the authors FB page.
*
* @link https://developers.facebook.com/blog/post/2013/06/19/platform-updates--new-open-graph-tags-for-media-publishers-and-more/
* @link https://developers.facebook.com/docs/reference/opengraph/object-type/article/
*/
public function article_author() {
$this->tag( 'article:author', $this->get_author() );
}
/**
* Output the article tags as `article:tag` tags.
*/
public function tags() {
$tags = get_the_tags();
if ( is_wp_error( $tags ) || empty( $tags ) ) {
return;
}
foreach ( $tags as $tag ) {
$this->tag( 'article:tag', $tag->name );
}
}
/**
* Output the article category as an `article:section` tag.
*/
public function category() {
$terms = get_the_category();
if ( is_wp_error( $terms ) || empty( $terms ) ) {
return;
}
// We can only show one section here, so we take the first one.
$this->tag( 'article:section', $terms[0]->name );
}
/**
* Output the article publish and last modification date.
*/
public function publish_date() {
$post = get_post();
$pub = mysql2date( DATE_W3C, $post->post_date, false );
$mod = mysql2date( DATE_W3C, $post->post_modified, false );
if ( strtotime( $mod ) > strtotime( $pub ) ) {
$this->tag( 'og:updated_time', $mod );
}
}
/**
* Get author.
*
* @return string
*/
private function get_author() {
$author = Helper::get_user_meta( 'facebook_author', $GLOBALS['post']->post_author );
if ( $author ) {
return $author;
}
$author = get_user_meta( $GLOBALS['post']->post_author, 'facebook', true );
if ( $author ) {
return $author;
}
return Helper::get_settings( 'titles.facebook_author_urls' );
}
/**
* Is WooCommerce product
*
* @return bool
*/
private function is_product() {
return function_exists( 'is_woocommerce' ) && function_exists( 'is_product' ) && is_product();
}
}
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