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Prime users cache in WP_Query and post REST API controller.

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For a call to `WP_Query` or a post REST API request that contains posts from multiple authors, call the `cache_users` function, to ensure that all user data for post authors is primed in 
a single database query. This results in far fewer database queries on multiple author sites. 

Props spacedmonkey, timothyblynjacobs, peterwilsoncc.
Fixes #55716.


git-svn-id: https://develop.svn.wordpress.org/trunk@53482 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Jonny Harris
2022-06-10 13:37:52 +00:00
parent f52d476bc6
commit aff6a79b27
5 changed files with 54 additions and 4 deletions
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33
tests/phpunit/tests/query.php
View File

@@ -620,6 +620,39 @@ class Tests_Query extends WP_UnitTestCase {
$this->assertSame( array( $p2 ), $q->posts );
}
/**
* @ticket 55716
*/
public function test_prime_user_cache() {
$action = new MockAction();
add_filter( 'update_user_metadata_cache', array( $action, 'filter' ), 10, 2 );
$user_ids = array();
$count = 5;
for ( $i = 0; $i < $count; $i ++ ) {
$user_ids[ $i ] = self::factory()->user->create();
self::factory()->post->create(
array(
'post_type' => 'post',
'post_author' => $user_ids[ $i ],
)
);
}
$q = new WP_Query(
array(
'post_type' => 'post',
'posts_per_page' => $count,
)
);
while ( $q->have_posts() ) {
$q->the_post();
}
$args = $action->get_args();
$last_args = end( $args );
$this->assertSameSets( $user_ids, $last_args[1], 'Ensure that user ids are primed' );
}
/**
* @ticket 35601
*/