Source
File: wp-includes/widgets/class-wp-widget-media.php
public function update( $new_instance, $instance ) {
$schema = $this->get_instance_schema();
foreach ( $schema as $field => $field_schema ) {
if ( ! array_key_exists( $field, $new_instance ) ) {
continue;
}
$value = $new_instance[ $field ];
/*
* Workaround for rest_validate_value_from_schema() due to the fact that
* rest_is_boolean( '' ) === false, while rest_is_boolean( '1' ) is true.
*/
if ( 'boolean' === $field_schema['type'] && '' === $value ) {
$value = false;
}
if ( true !== rest_validate_value_from_schema( $value, $field_schema, $field ) ) {
continue;
}
$value = rest_sanitize_value_from_schema( $value, $field_schema );
// @codeCoverageIgnoreStart
if ( is_wp_error( $value ) ) {
continue; // Handle case when rest_sanitize_value_from_schema() ever returns WP_Error as its phpdoc @return tag indicates.
}
// @codeCoverageIgnoreEnd
if ( isset( $field_schema['sanitize_callback'] ) ) {
$value = call_user_func( $field_schema['sanitize_callback'], $value );
}
if ( is_wp_error( $value ) ) {
continue;
}
$instance[ $field ] = $value;
}
return $instance;
}