WP_Metadata_Lazyloader::lazyload_meta_callback( mixed $check, int $object_id, string $meta_key, bool $single, string $meta_type )

Lazy-loads meta for queued objects.

Description

This method is public so that it can be used as a filter callback. As a rule, there is no need to invoke it directly.

Parameters

$check

(mixed) (Required) The $check param passed from the 'get_*_metadata' hook.

$object_id

(int) (Required) ID of the object metadata is for.

$meta_key

(string) (Required) Unused.

$single

(bool) (Required) Unused.

$meta_type

(string) (Required) Type of object metadata is for. Accepts 'post', 'comment', 'term', 'user', or any other object type with an associated meta table.

Return

(mixed) In order not to short-circuit get_metadata(). Generally, this is null, but it could be another value if filtered by a plugin.

Source

File: wp-includes/class-wp-metadata-lazyloader.php 

	public function lazyload_meta_callback( $check, $object_id, $meta_key, $single, $meta_type ) {
		if ( empty( $this->pending_objects[ $meta_type ] ) ) {
			return $check;
		}

		$object_ids = array_keys( $this->pending_objects[ $meta_type ] );
		if ( $object_id && ! in_array( $object_id, $object_ids, true ) ) {
			$object_ids[] = $object_id;
		}

		update_meta_cache( $meta_type, $object_ids );

		// No need to run again for this set of objects.
		$this->reset_queue( $meta_type );

		return $check;
	}

Expand Source Code View on GitHub

Changelog

Changelog
Version Description
6.3.0 Introduced.