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WP_REST_Meta_Fields::prepare_value( mixed $value, WP_REST_Request $request, array $args )

Prepares a meta value for output.

Description

Default preparation for meta fields. Override by passing the prepare_callback in your show_in_rest options.

Parameters

$value

(mixed) (Required) Meta value from the database.

$request

(WP_REST_Request) (Required) Request object.

$args

(array) (Required) REST-specific options for the meta key.

Return

(mixed) Value prepared for output. If a non-JsonSerializable object, null.

Source

File: wp-includes/rest-api/fields/class-wp-rest-meta-fields.php 

public static function prepare_value( $value, $request, $args ) {
		if ( $args['single'] ) {
			$schema = $args['schema'];
		} else {
			$schema = $args['schema']['items'];
		}

		if ( '' === $value && in_array( $schema['type'], array( 'boolean', 'integer', 'number' ), true ) ) {
			$value = static::get_empty_value_for_type( $schema['type'] );
		}

		if ( is_wp_error( rest_validate_value_from_schema( $value, $schema ) ) ) {
			return null;
		}

		return rest_sanitize_value_from_schema( $value, $schema );
	}

Changelog

Version Description
4.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/classes/wp_rest_meta_fields/prepare_value