<?php
/**
* Sitemaps: WP_Sitemaps_Posts class
*
* Builds the sitemaps for the 'post' object type.
*
* @package WordPress
* @subpackage Sitemaps
* @since 5.5.0
*/
/**
* Posts XML sitemap provider.
*
* @since 5.5.0
*/
class WP_Sitemaps_Posts extends WP_Sitemaps_Provider {
/**
* WP_Sitemaps_Posts constructor.
*
* @since 5.5.0
*/
public function __construct() {
$this->name = 'posts';
$this->object_type = 'post';
}
/**
* Returns the public post types, which excludes nav_items and similar types.
* Attachments are also excluded. This includes custom post types with public = true.
*
* @since 5.5.0
*
* @return WP_Post_Type[] Array of registered post type objects keyed by their name.
*/
public function get_object_subtypes() {
$post_types = get_post_types( array( 'public' => true ), 'objects' );
unset( $post_types['attachment'] );
$post_types = array_filter( $post_types, 'is_post_type_viewable' );
/**
* Filters the list of post object sub types available within the sitemap.
*
* @since 5.5.0
*
* @param WP_Post_Type[] $post_types Array of registered post type objects keyed by their name.
*/
return apply_filters( 'wp_sitemaps_post_types', $post_types );
}
/**
* Gets a URL list for a post type sitemap.
*
* @since 5.5.0
* @since 5.9.0 Renamed `$post_type` to `$object_subtype` to match parent class
* for PHP 8 named parameter support.
*
* @param int $page_num Page of results.
* @param string $object_subtype Optional. Post type name. Default empty.
*
* @return array[] Array of URL information for a sitemap.
*/
public function get_url_list( $page_num, $object_subtype = '' ) {
// Restores the more descriptive, specific name for use within this method.
$post_type = $object_subtype;
// Bail early if the queried post type is not supported.
$supported_types = $this->get_object_subtypes();
if ( ! isset( $supported_types[ $post_type ] ) ) {
return array();
}
/**
* Filters the posts URL list before it is generated.
*
* Returning a non-null value will effectively short-circuit the generation,
* returning that value instead.
*
* @since 5.5.0
*
* @param array[]|null $url_list The URL list. Default null.
* @param string $post_type Post type name.
* @param int $page_num Page of results.
*/
$url_list = apply_filters(
'wp_sitemaps_posts_pre_url_list',
null,
$post_type,
$page_num
);
if ( null !== $url_list ) {
return $url_list;
}
$args = $this->get_posts_query_args( $post_type );
$args['paged'] = $page_num;
$query = new WP_Query( $args );
$url_list = array();
/*
* Add a URL for the homepage in the pages sitemap.
* Shows only on the first page if the reading settings are set to display latest posts.
*/
if ( 'page' === $post_type && 1 === $page_num && 'posts' === get_option( 'show_on_front' ) ) {
// Extract the data needed for home URL to add to the array.
$sitemap_entry = array(
'loc' => home_url( '/' ),
);
/*
* Get the most recent posts displayed on the homepage,
* and then sort them by their modified date to find
* the date the homepage was approximately last updated.
*/
$latest_posts = new WP_Query(
array(
'post_type' => 'post',
'post_status' => 'publish',
'orderby' => 'date',
'order' => 'DESC',
'no_found_rows' => true,
'update_post_meta_cache' => false,
'update_post_term_cache' => false,
)
);
if ( ! empty( $latest_posts->posts ) ) {
$posts = wp_list_sort( $latest_posts->posts, 'post_modified_gmt', 'DESC' );
$sitemap_entry['lastmod'] = wp_date( DATE_W3C, strtotime( $posts[0]->post_modified_gmt ) );
}
/**
* Filters the sitemap entry for the home page when the 'show_on_front' option equals 'posts'.
*
* @since 5.5.0
*
* @param array $sitemap_entry Sitemap entry for the home page.
*/
$sitemap_entry = apply_filters( 'wp_sitemaps_posts_show_on_front_entry', $sitemap_entry );
$url_list[] = $sitemap_entry;
}
foreach ( $query->posts as $post ) {
$sitemap_entry = array(
'loc' => get_permalink( $post ),
'lastmod' => wp_date( DATE_W3C, strtotime( $post->post_modified_gmt ) ),
);
/**
* Filters the sitemap entry for an individual post.
*
* @since 5.5.0
*
* @param array $sitemap_entry Sitemap entry for the post.
* @param WP_Post $post Post object.
* @param string $post_type Name of the post_type.
*/
$sitemap_entry = apply_filters( 'wp_sitemaps_posts_entry', $sitemap_entry, $post, $post_type );
$url_list[] = $sitemap_entry;
}
return $url_list;
}
/**
* Gets the max number of pages available for the object type.
*
* @since 5.5.0
* @since 5.9.0 Renamed `$post_type` to `$object_subtype` to match parent class
* for PHP 8 named parameter support.
*
* @param string $object_subtype Optional. Post type name. Default empty.
* @return int Total number of pages.
*/
public function get_max_num_pages( $object_subtype = '' ) {
if ( empty( $object_subtype ) ) {
return 0;
}
// Restores the more descriptive, specific name for use within this method.
$post_type = $object_subtype;
/**
* Filters the max number of pages before it is generated.
*
* Passing a non-null value will short-circuit the generation,
* returning that value instead.
*
* @since 5.5.0
*
* @param int|null $max_num_pages The maximum number of pages. Default null.
* @param string $post_type Post type name.
*/
$max_num_pages = apply_filters( 'wp_sitemaps_posts_pre_max_num_pages', null, $post_type );
if ( null !== $max_num_pages ) {
return $max_num_pages;
}
$args = $this->get_posts_query_args( $post_type );
$args['fields'] = 'ids';
$args['no_found_rows'] = false;
$query = new WP_Query( $args );
$min_num_pages = ( 'page' === $post_type && 'posts' === get_option( 'show_on_front' ) ) ? 1 : 0;
return isset( $query->max_num_pages ) ? max( $min_num_pages, $query->max_num_pages ) : 1;
}
/**
* Returns the query args for retrieving posts to list in the sitemap.
*
* @since 5.5.0
* @since 6.1.0 Added `ignore_sticky_posts` default parameter.
*
* @param string $post_type Post type name.
* @return array Array of WP_Query arguments.
*/
protected function get_posts_query_args( $post_type ) {
/**
* Filters the query arguments for post type sitemap queries.
*
* @see WP_Query for a full list of arguments.
*
* @since 5.5.0
* @since 6.1.0 Added `ignore_sticky_posts` default parameter.
*
* @param array $args Array of WP_Query arguments.
* @param string $post_type Post type name.
*/
$args = apply_filters(
'wp_sitemaps_posts_query_args',
array(
'orderby' => 'ID',
'order' => 'ASC',
'post_type' => $post_type,
'posts_per_page' => wp_sitemaps_get_max_urls( $this->object_type ),
'post_status' => array( 'publish' ),
'no_found_rows' => true,
'update_post_term_cache' => false,
'update_post_meta_cache' => false,
'ignore_sticky_posts' => true, // Sticky posts will still appear, but they won't be moved to the front.
),
$post_type
);
return $args;
}
}
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