global $post;
if ( !
$this->in_the_loop
) { // Only prime the post cache for queries limited to the ID field.
$post_ids =
array_filter( $this->posts, 'is_numeric'
);
// Exclude any falsey values, such as 0.
$post_ids =
array_filter( $post_ids );
if ( $post_ids ) { _prime_post_caches( $post_ids,
$this->query_vars
['update_post_term_cache'
],
$this->query_vars
['update_post_meta_cache'
] );
} $post_objects =
array_map( 'get_post',
$this->posts
);
update_post_author_caches( $post_objects );
} $this->in_the_loop = true;
$this->before_loop = false;
if ( -1 ==
$this->current_post
) { // Loop has just started.
/**
* Fires once the loop is started.
*
* @since 2.0.0
*
* @param WP_Query $query The WP_Query instance (passed by reference).
*/