Big iPhone/iPad Update Now Available
In "Mobile"
The WordPress for Android App Gets a Big Facelift
In "Mobile"
Upgrade Focus: VideoPress For Weddings
In "Upgrade"
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 <<
#settings-reading-relatedposts .disabled { opacity:.5; filter:Alpha(opacity=50); }
#settings-reading-relatedposts-preview .jp-relatedposts { background:#fff; padding:.5em; width:75%; }
$extra_css
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( 0 );
}
/**
* 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;
}
}
