| 1 |
<?php |
| 2 |
/** |
| 3 |
* Desktop Mode — My WordPress: per-attachment "used in" endpoint. |
| 4 |
* |
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* `GET /desktop-mode/v1/media-usage/<id>` returns the list of public |
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* post-type entries that reference a given attachment, either as |
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* featured image (`_thumbnail_id` meta) or as an embed inside |
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* `post_content` (block-editor `wp-image-<id>` class or a direct URL |
| 9 |
* to the attachment file). |
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* |
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* Payload shape: |
| 12 |
* |
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* { |
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* media: { id, title, mime, sourceUrl, filename, date, author }, |
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* usedIn: [ |
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* { postId, postType, postTypeLabel, title, status, link, |
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* editLink, usedAs: 'featured'|'content'|'meta', |
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* authorId, authorName, date } |
| 19 |
* ] |
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* } |
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* |
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* Rows are filtered per-row with `current_user_can( 'read_post' )`, |
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* so subscribers never see drafts/private posts they can't read. |
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* |
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* Results are cached in a transient keyed on the attachment id + |
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* the viewer's effective capability scope. Cache is busted whenever |
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* any post is saved or deleted. |
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* |
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* @package WPDesktopMode |
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* @since 0.21.0 |
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*/ |
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|
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defined( 'ABSPATH' ) || exit; |
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|
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/** |
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* Register the route. |
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* |
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* @since 0.21.0 |
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*/ |
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function desktop_mode_my_wordpress_register_media_usage_route() { |
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register_rest_route( |
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'desktop-mode/v1', |
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'/media-usage/(?P<id>\d+)', |
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array( |
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'methods' => WP_REST_Server::READABLE, |
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'callback' => 'desktop_mode_my_wordpress_media_usage_callback', |
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'permission_callback' => static function ( $request ) { |
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$id = (int) $request->get_param( 'id' ); |
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if ( $id <= 0 ) { |
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return false; |
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} |
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$post = get_post( $id ); |
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if ( ! $post || 'attachment' !== $post->post_type ) { |
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return false; |
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} |
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return current_user_can( 'read_post', $id ); |
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}, |
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'args' => array( |
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'id' => array( |
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'required' => true, |
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'type' => 'integer', |
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'sanitize_callback' => 'absint', |
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), |
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), |
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) |
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); |
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} |
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add_action( 'rest_api_init', 'desktop_mode_my_wordpress_register_media_usage_route' ); |
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|
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/** |
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* Cache TTL (seconds). Filterable so sites that bulk-import media |
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* can shorten the window, or sites with stable libraries can |
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* lengthen it. |
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* |
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* @since 0.21.0 |
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* |
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* @param int $attachment_id Attachment id. |
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* @return int |
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*/ |
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function desktop_mode_my_wordpress_media_usage_ttl( $attachment_id ) { |
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/** |
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* Filter the media-usage transient TTL. |
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* |
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* @since 0.21.0 |
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* |
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* @param int $seconds Default 300 (5 minutes). |
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* @param int $attachment_id Attachment id the cache key is for. |
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*/ |
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return (int) apply_filters( 'desktop_mode_my_wordpress_media_usage_cache_ttl', 300, $attachment_id ); |
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} |
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|
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/** |
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* Capability buckets the cache namespaces over. A second-tier |
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* change to the gating logic must update this list — the busters |
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* iterate over the same array, so the writer and the buster can |
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* never go out of sync. |
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* |
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* @since 0.21.0 |
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* |
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* @return string[] |
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*/ |
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function desktop_mode_my_wordpress_media_usage_cache_buckets() { |
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return array( 'edit', 'read' ); |
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} |
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|
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/** |
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* Bucket key for the current user — the writer's view of which |
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* cache slot to read/write. |
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* |
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* @since 0.21.0 |
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* |
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* @return string |
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*/ |
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function desktop_mode_my_wordpress_media_usage_current_bucket() { |
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return current_user_can( 'edit_others_posts' ) ? 'edit' : 'read'; |
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} |
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|
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/** |
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* Build the transient key — namespaces the cache by attachment id |
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* AND a coarse capability bucket so admins and viewers never share |
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* a hit. |
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* |
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* @since 0.21.0 |
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* |
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* @param int $attachment_id Attachment id. |
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* @param string $bucket Optional bucket override. Defaults to |
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* the current user's bucket. |
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* @return string |
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*/ |
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function desktop_mode_my_wordpress_media_usage_cache_key( $attachment_id, $bucket = null ) { |
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if ( null === $bucket ) { |
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$bucket = desktop_mode_my_wordpress_media_usage_current_bucket(); |
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} |
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return 'dm_media_usage_' . (int) $attachment_id . '_' . $bucket . '_v1'; |
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} |
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|
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/** |
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* Endpoint callback. See file docblock for payload shape. |
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* |
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* @since 0.21.0 |
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* |
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* @param WP_REST_Request $request REST request. |
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* @return array|WP_Error |
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*/ |
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function desktop_mode_my_wordpress_media_usage_callback( $request ) { |
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$attachment_id = (int) $request->get_param( 'id' ); |
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$attachment = get_post( $attachment_id ); |
| 148 |
if ( ! $attachment || 'attachment' !== $attachment->post_type ) { |
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return new WP_Error( |
| 150 |
'desktop_mode_media_not_found', |
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__( 'Attachment not found.', 'desktop-mode' ), |
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array( 'status' => 404 ) |
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); |
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} |
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|
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$cache_key = desktop_mode_my_wordpress_media_usage_cache_key( $attachment_id ); |
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$cached = get_transient( $cache_key ); |
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if ( is_array( $cached ) ) { |
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/* |
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* Cache stores the PRE-filter payload. We re-run the filter |
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* on every hit so plugin extensions (ACF image meta, page- |
| 162 |
* builder galleries, etc.) stay live even while the heavy |
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* SQL portion of the payload is cached. Plugin output is |
| 164 |
* cheaper to recompute than the LIKE-scan; the base payload |
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* only refreshes on the cache-bust events (save_post, |
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* deleted_post, delete_attachment). |
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*/ |
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/** This filter is documented in includes/my-wordpress/media-usage.php */ |
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return apply_filters( 'desktop_mode_my_wordpress_media_usage', $cached, $attachment_id ); |
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} |
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|
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$payload = desktop_mode_my_wordpress_media_usage_build( $attachment ); |
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|
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set_transient( |
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$cache_key, |
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$payload, |
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desktop_mode_my_wordpress_media_usage_ttl( $attachment_id ) |
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); |
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|
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/** |
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* Filter the media-usage payload before returning to the bundle. |
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* Plugins (ACF, page builders, Yoast image meta) can append rows |
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* to `usedIn` describing their own attachment references. |
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* |
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* @since 0.21.0 |
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* |
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* @param array $payload Default payload. |
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* @param int $attachment_id Subject attachment id. |
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*/ |
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return apply_filters( 'desktop_mode_my_wordpress_media_usage', $payload, $attachment_id ); |
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} |
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|
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/** |
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* Build the un-filtered payload. Separated from the callback so the |
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* cache bypass can short-circuit before any DB work. |
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* |
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* @since 0.21.0 |
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* |
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* @param WP_Post $attachment Attachment post. |
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* @return array |
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*/ |
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function desktop_mode_my_wordpress_media_usage_build( $attachment ) { |
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global $wpdb; |
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|
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$attachment_id = (int) $attachment->ID; |
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$file_url = (string) wp_get_attachment_url( $attachment_id ); |
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$file_basename = '' !== $file_url ? wp_basename( $file_url ) : ''; |
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|
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$author = get_userdata( (int) $attachment->post_author ); |
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$media_info = array( |
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'id' => $attachment_id, |
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'title' => (string) get_the_title( $attachment_id ), |
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'mime' => (string) $attachment->post_mime_type, |
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'sourceUrl' => $file_url, |
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'filename' => $file_basename, |
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'date' => mysql2date( 'c', $attachment->post_date_gmt, false ), |
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'author' => array( |
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'id' => (int) $attachment->post_author, |
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'name' => $author ? (string) $author->display_name : '', |
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), |
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); |
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|
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$public_types = array_values( get_post_types( array( 'public' => true ), 'names' ) ); |
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// Filter out `attachment` from the search — attachments don't |
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// reference other attachments in a meaningful way for this view. |
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$public_types = array_values( array_diff( $public_types, array( 'attachment' ) ) ); |
| 227 |
if ( empty( $public_types ) ) { |
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return array( |
| 229 |
'media' => $media_info, |
| 230 |
'usedIn' => array(), |
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); |
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} |
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|
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// `usedAs` priority: featured > content > meta. We collect every |
| 235 |
// hit per post id, then collapse to the highest-priority kind for |
| 236 |
// display so a row isn't double-listed. |
| 237 |
$rows_by_post = array(); |
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|
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// --- Featured image references -------------------------------------- |
| 240 |
$thumb_post_ids = $wpdb->get_col( |
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$wpdb->prepare( |
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"SELECT post_id FROM {$wpdb->postmeta} |
| 243 |
WHERE meta_key = '_thumbnail_id' AND meta_value = %s", |
| 244 |
(string) $attachment_id |
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) |
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); |
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foreach ( (array) $thumb_post_ids as $pid ) { |
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$pid = (int) $pid; |
| 249 |
if ( $pid > 0 ) { |
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$rows_by_post[ $pid ] = 'featured'; |
| 251 |
} |
| 252 |
} |
| 253 |
|
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// --- Content embeds (block class + raw URL) ------------------------- |
| 255 |
// We need to match the file basename AND its variants — WP |
| 256 |
// auto-generates `image-scaled.jpg` for big uploads and stores |
| 257 |
// THAT as `_wp_attached_file`, while editors emit the original |
| 258 |
// URL in `<img src>`. Without trying both, a post embedding the |
| 259 |
// unscaled URL never matches a `-scaled` attachment. |
| 260 |
if ( '' !== $file_basename ) { |
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$basename_variants = array( $file_basename ); |
| 262 |
if ( preg_match( '/^(.*)-scaled(\.[a-zA-Z0-9]+)$/', $file_basename, $m ) ) { |
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$basename_variants[] = $m[1] . $m[2]; |
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} |
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$basename_variants = array_values( array_unique( $basename_variants ) ); |
| 266 |
|
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$class_pattern = '%wp-image-' . $attachment_id . '%'; |
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$url_patterns = array(); |
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foreach ( $basename_variants as $variant ) { |
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$url_patterns[] = '%' . $wpdb->esc_like( $variant ) . '%'; |
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} |
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|
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// Build the OR-arms — one for class, N for URL variants. |
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$pattern_args = array_merge( array( $class_pattern ), $url_patterns ); |
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$pattern_clause = implode( ' OR ', array_fill( 0, count( $pattern_args ), 'post_content LIKE %s' ) ); |
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$type_holders = implode( ',', array_fill( 0, count( $public_types ), '%s' ) ); |
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$query_args = array_merge( $pattern_args, $public_types ); |
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|
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// phpcs:ignore WordPress.DB.PreparedSQL.InterpolatedNotPrepared |
| 280 |
$content_rows = $wpdb->get_col( |
| 281 |
$wpdb->prepare( |
| 282 |
"SELECT ID FROM {$wpdb->posts} |
| 283 |
WHERE ( {$pattern_clause} ) |
| 284 |
AND post_status NOT IN ( 'auto-draft', 'inherit', 'trash' ) |
| 285 |
AND post_type IN ( {$type_holders} )", |
| 286 |
$query_args |
| 287 |
) |
| 288 |
); |
| 289 |
|
| 290 |
// Build the URL-variant list (canonical + unscaled) for the |
| 291 |
// confirmation pass below. `wp_get_attachment_image_src` is |
| 292 |
// unaware of these — we precompute them here. |
| 293 |
$url_variants = array(); |
| 294 |
if ( '' !== $file_url ) { |
| 295 |
$url_variants[] = $file_url; |
| 296 |
if ( preg_match( '/^(.*)-scaled(\.[a-zA-Z0-9]+)$/', $file_url, $m ) ) { |
| 297 |
$url_variants[] = $m[1] . $m[2]; |
| 298 |
} elseif ( preg_match( '/^(.*)(\.[a-zA-Z0-9]+)$/', $file_url, $m ) ) { |
| 299 |
$url_variants[] = $m[1] . '-scaled' . $m[2]; |
| 300 |
} |
| 301 |
} |
| 302 |
|
| 303 |
// The LIKE scan over-fetches: `%wp-image-12%` matches |
| 304 |
// `wp-image-123`. Re-check each candidate with a word- |
| 305 |
// boundary regex (matches `wp-image-12` followed by any |
| 306 |
// non-digit, or end of string), AND accept any post that |
| 307 |
// contains any of the URL variants. |
| 308 |
$class_re = '/wp-image-' . $attachment_id . '(?!\d)/'; |
| 309 |
foreach ( (array) $content_rows as $pid ) { |
| 310 |
$pid = (int) $pid; |
| 311 |
if ( $pid <= 0 || isset( $rows_by_post[ $pid ] ) ) { |
| 312 |
continue; |
| 313 |
} |
| 314 |
$content_post = get_post( $pid ); |
| 315 |
if ( ! $content_post || ! isset( $content_post->post_content ) ) { |
| 316 |
continue; |
| 317 |
} |
| 318 |
$haystack = (string) $content_post->post_content; |
| 319 |
$has_class = (bool) preg_match( $class_re, $haystack ); |
| 320 |
$has_url = false; |
| 321 |
foreach ( $url_variants as $variant ) { |
| 322 |
if ( '' !== $variant && false !== strpos( $haystack, $variant ) ) { |
| 323 |
$has_url = true; |
| 324 |
break; |
| 325 |
} |
| 326 |
} |
| 327 |
if ( ! $has_class && ! $has_url ) { |
| 328 |
continue; |
| 329 |
} |
| 330 |
$rows_by_post[ $pid ] = 'content'; |
| 331 |
} |
| 332 |
} |
| 333 |
|
| 334 |
// --- Build the row payload, per-row capability gated ---------------- |
| 335 |
$type_objects = array(); |
| 336 |
foreach ( $public_types as $type ) { |
| 337 |
$type_objects[ $type ] = get_post_type_object( $type ); |
| 338 |
} |
| 339 |
|
| 340 |
$used_in = array(); |
| 341 |
foreach ( $rows_by_post as $post_id => $used_as ) { |
| 342 |
$post = get_post( $post_id ); |
| 343 |
if ( ! $post ) { |
| 344 |
continue; |
| 345 |
} |
| 346 |
if ( ! in_array( $post->post_type, $public_types, true ) ) { |
| 347 |
continue; |
| 348 |
} |
| 349 |
if ( ! current_user_can( 'read_post', $post_id ) ) { |
| 350 |
continue; |
| 351 |
} |
| 352 |
$author_obj = get_userdata( (int) $post->post_author ); |
| 353 |
$type_obj = isset( $type_objects[ $post->post_type ] ) ? $type_objects[ $post->post_type ] : null; |
| 354 |
$used_in[] = array( |
| 355 |
'postId' => (int) $post->ID, |
| 356 |
'postType' => (string) $post->post_type, |
| 357 |
'postTypeLabel' => $type_obj && isset( $type_obj->labels->singular_name ) |
| 358 |
? (string) $type_obj->labels->singular_name |
| 359 |
: (string) $post->post_type, |
| 360 |
'title' => (string) get_the_title( $post ), |
| 361 |
'status' => (string) $post->post_status, |
| 362 |
'link' => (string) get_permalink( $post ), |
| 363 |
'editLink' => (string) get_edit_post_link( $post->ID, 'raw' ), |
| 364 |
'usedAs' => $used_as, |
| 365 |
'authorId' => (int) $post->post_author, |
| 366 |
'authorName' => $author_obj ? (string) $author_obj->display_name : '', |
| 367 |
'date' => mysql2date( 'c', $post->post_date_gmt, false ), |
| 368 |
); |
| 369 |
} |
| 370 |
|
| 371 |
// Stable sort: most recent first. |
| 372 |
usort( |
| 373 |
$used_in, |
| 374 |
static function ( $a, $b ) { |
| 375 |
return strcmp( (string) $b['date'], (string) $a['date'] ); |
| 376 |
} |
| 377 |
); |
| 378 |
|
| 379 |
return array( |
| 380 |
'media' => $media_info, |
| 381 |
'usedIn' => $used_in, |
| 382 |
); |
| 383 |
} |
| 384 |
|
| 385 |
/** |
| 386 |
* Per-post stash of attachment ids referenced BEFORE an in-progress |
| 387 |
* update. Populated on `pre_post_update` (where the DB row still |
| 388 |
* reflects the previous state), drained on `save_post` so the |
| 389 |
* buster can union pre + post sets — otherwise removing a |
| 390 |
* `wp-image-N` block from a post would leave the cache for |
| 391 |
* attachment N stale until the TTL expires. |
| 392 |
* |
| 393 |
* @since 0.21.0 |
| 394 |
* |
| 395 |
* @var array<int,array<int,true>> |
| 396 |
*/ |
| 397 |
$GLOBALS['desktop_mode_media_usage_pre_save_refs'] = array(); |
| 398 |
|
| 399 |
/** |
| 400 |
* Extract attachment ids referenced by a post — featured image plus |
| 401 |
* everything resolvable from `post_content`. Defers to the canonical |
| 402 |
* resolver in `attached-media.php` so this buster catches the same |
| 403 |
* cases the REST field does (block-class scan, classic `[caption]` |
| 404 |
* shortcodes, `data-id` / `data-attachment-id`, and raw `<img src>` |
| 405 |
* URL resolution including `-scaled.jpg` ↔ original swaps), plus |
| 406 |
* any ids appended via the `desktop_mode_my_wordpress_attached_media` |
| 407 |
* filter (ACF, page builders, post-meta galleries). Without this |
| 408 |
* delegation, editing a post to add or remove a raw URL embed |
| 409 |
* wouldn't bust the affected attachment's media-usage cache until |
| 410 |
* the TTL expired. |
| 411 |
* |
| 412 |
* @since 0.21.0 |
| 413 |
* |
| 414 |
* @param int|WP_Post $post Post id or object. |
| 415 |
* @return array<int,true> Set of attachment ids keyed for dedup. |
| 416 |
*/ |
| 417 |
function desktop_mode_my_wordpress_media_usage_extract_refs( $post ) { |
| 418 |
$ids = array(); |
| 419 |
$obj = is_object( $post ) ? $post : get_post( (int) $post ); |
| 420 |
if ( ! $obj || ! isset( $obj->ID ) ) { |
| 421 |
return $ids; |
| 422 |
} |
| 423 |
if ( ! function_exists( 'desktop_mode_my_wordpress_post_attached_media' ) ) { |
| 424 |
// Defensive: bootstrap order should always load |
| 425 |
// attached-media.php before this can be called from a save |
| 426 |
// hook, but fall back to the legacy minimal scan just in |
| 427 |
// case so the buster never silently no-ops. |
| 428 |
$thumb = (int) get_post_meta( (int) $obj->ID, '_thumbnail_id', true ); |
| 429 |
if ( $thumb > 0 ) { |
| 430 |
$ids[ $thumb ] = true; |
| 431 |
} |
| 432 |
$content = isset( $obj->post_content ) ? (string) $obj->post_content : ''; |
| 433 |
if ( '' !== $content && preg_match_all( '/wp-image-(\d+)/', $content, $m ) ) { |
| 434 |
foreach ( $m[1] as $id ) { |
| 435 |
$ids[ (int) $id ] = true; |
| 436 |
} |
| 437 |
} |
| 438 |
return $ids; |
| 439 |
} |
| 440 |
foreach ( desktop_mode_my_wordpress_post_attached_media( (int) $obj->ID ) as $id ) { |
| 441 |
$id = (int) $id; |
| 442 |
if ( $id > 0 ) { |
| 443 |
$ids[ $id ] = true; |
| 444 |
} |
| 445 |
} |
| 446 |
return $ids; |
| 447 |
} |
| 448 |
|
| 449 |
/** |
| 450 |
* Snapshot the attachment refs of a post just before it's updated. |
| 451 |
* Fired by `pre_post_update`, which runs before the DB row mutates, |
| 452 |
* so `get_post` here returns the OLD content. We stash the ref set |
| 453 |
* in a per-request global and read it back in the `save_post` hook. |
| 454 |
* |
| 455 |
* @since 0.21.0 |
| 456 |
* |
| 457 |
* @param int $post_id Post id about to be updated. |
| 458 |
*/ |
| 459 |
function desktop_mode_my_wordpress_media_usage_snapshot_pre_save( $post_id ) { |
| 460 |
$post_id = (int) $post_id; |
| 461 |
if ( $post_id <= 0 ) { |
| 462 |
return; |
| 463 |
} |
| 464 |
$GLOBALS['desktop_mode_media_usage_pre_save_refs'][ $post_id ] = |
| 465 |
desktop_mode_my_wordpress_media_usage_extract_refs( $post_id ); |
| 466 |
} |
| 467 |
add_action( 'pre_post_update', 'desktop_mode_my_wordpress_media_usage_snapshot_pre_save' ); |
| 468 |
|
| 469 |
/** |
| 470 |
* Bust the transient when a post changes. The cache key is |
| 471 |
* per-attachment, so we don't know which entries reference what — |
| 472 |
* the correct move is to delete cache for every attachment |
| 473 |
* referenced by the saved/deleted post. The union of: |
| 474 |
* |
| 475 |
* - pre-save refs (captured by `pre_post_update` above) so a |
| 476 |
* reference removal still busts the dropped attachment's cache, |
| 477 |
* - post-save refs (read here) so a freshly-added reference |
| 478 |
* busts the cache too. |
| 479 |
* |
| 480 |
* Bounded by the actual count of `wp-image-N` matches in either |
| 481 |
* version of the content + the post's `_thumbnail_id`. |
| 482 |
* |
| 483 |
* @since 0.21.0 |
| 484 |
* |
| 485 |
* @param int $post_id Post id that was just modified. |
| 486 |
*/ |
| 487 |
function desktop_mode_my_wordpress_media_usage_bust_for_post( $post_id ) { |
| 488 |
$post_id = (int) $post_id; |
| 489 |
if ( $post_id <= 0 ) { |
| 490 |
return; |
| 491 |
} |
| 492 |
|
| 493 |
$ids = desktop_mode_my_wordpress_media_usage_extract_refs( $post_id ); |
| 494 |
|
| 495 |
if ( isset( $GLOBALS['desktop_mode_media_usage_pre_save_refs'][ $post_id ] ) ) { |
| 496 |
$ids += $GLOBALS['desktop_mode_media_usage_pre_save_refs'][ $post_id ]; |
| 497 |
unset( $GLOBALS['desktop_mode_media_usage_pre_save_refs'][ $post_id ] ); |
| 498 |
} |
| 499 |
|
| 500 |
foreach ( array_keys( $ids ) as $attachment_id ) { |
| 501 |
foreach ( desktop_mode_my_wordpress_media_usage_cache_buckets() as $bucket ) { |
| 502 |
delete_transient( |
| 503 |
desktop_mode_my_wordpress_media_usage_cache_key( (int) $attachment_id, $bucket ) |
| 504 |
); |
| 505 |
} |
| 506 |
} |
| 507 |
} |
| 508 |
add_action( 'save_post', 'desktop_mode_my_wordpress_media_usage_bust_for_post' ); |
| 509 |
// `before_delete_post`, NOT `deleted_post`. By the time `deleted_post` |
| 510 |
// fires, `delete_all_meta_for_post` has already wiped `_thumbnail_id` |
| 511 |
// and the row itself is gone — `extract_refs()` would return an empty |
| 512 |
// set, so the cache for any referenced attachment would survive until |
| 513 |
// its 5-minute TTL. `before_delete_post` fires while the post + meta |
| 514 |
// are still readable. Signature matches (we only consume the first |
| 515 |
// arg, the post id). |
| 516 |
add_action( 'before_delete_post', 'desktop_mode_my_wordpress_media_usage_bust_for_post' ); |
| 517 |
// New posts skip `pre_post_update` but still go through `save_post`, |
| 518 |
// so the buster works as-is — the pre-snapshot is just empty. |
| 519 |
|
| 520 |
/** |
| 521 |
* Bust the transient when the attachment itself is deleted. |
| 522 |
* |
| 523 |
* @since 0.21.0 |
| 524 |
* |
| 525 |
* @param int $post_id Attachment id. |
| 526 |
*/ |
| 527 |
function desktop_mode_my_wordpress_media_usage_bust_for_attachment( $post_id ) { |
| 528 |
$post_id = (int) $post_id; |
| 529 |
if ( $post_id <= 0 ) { |
| 530 |
return; |
| 531 |
} |
| 532 |
foreach ( desktop_mode_my_wordpress_media_usage_cache_buckets() as $bucket ) { |
| 533 |
delete_transient( |
| 534 |
desktop_mode_my_wordpress_media_usage_cache_key( $post_id, $bucket ) |
| 535 |
); |
| 536 |
} |
| 537 |
} |
| 538 |
add_action( 'delete_attachment', 'desktop_mode_my_wordpress_media_usage_bust_for_attachment' ); |
| 539 |
|
