Custom sanitize callback used for all options to allow the use of ‘null’.

By default, the schema of settings will throw an error if a value is set to null as it’s not a valid value for something like "type => string". We provide a wrapper sanitizer to allow the use of null.

$value mixed Required

The value for the setting.

$request WP_REST_Request Required

The request object.

$param string Required

The parameter name.

mixed|WP_Error

File: wp-includes/rest-api/endpoints/class-wp-rest-settings-controller.php. View all references

public function sanitize_callback( $value, $request, $param ) {
	if ( is_null( $value ) ) {
		return $value;
	}

	return rest_parse_request_arg( $value, $request, $param );
}