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Query: Prevent ID only queries erroring when starting the loop.

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Ensure only full post objects are passed to `update_post_author_caches()` when called within `WP_Query::the_post()`. This prevents an error when starting the Loop for Queries initiated with a subset of fields or IDs only.

Props konyoldeath, dd32, lozula, TimothyBlynJacobs, spacedmonkey, mxbclang, peterwilsoncc.
Fixes #56948.



git-svn-id: https://develop.svn.wordpress.org/trunk@54771 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
peterwilsoncc
2022-11-09 00:57:02 +00:00
parent 6903cfd822
commit 4edede48eb
3 changed files with 79 additions and 1 deletions
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9
src/wp-includes/post.php
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@@ -7461,6 +7461,15 @@ function update_post_caches( &$posts, $post_type = 'post', $update_term_cache =
* @param WP_Post[] $posts Array of post objects.
*/
function update_post_author_caches( $posts ) {
/*
* cache_users() is a pluggable function so is not available prior
* to the `plugins_loaded` hook firing. This is to ensure against
* fatal errors when the function is not available.
*/
if ( ! function_exists( 'cache_users' ) ) {
return;
}
$author_ids = wp_list_pluck( $posts, 'post_author' );
$author_ids = array_map( 'absint', $author_ids );
$author_ids = array_unique( array_filter( $author_ids ) );