Spatie\Activitylog\ActivityLogger::replacePlaceholders PHP Метод

    protected function replacePlaceholders(string $description, Activity $activity) : string
    {
        return preg_replace_callback('/:[a-z0-9._-]+/i', function ($match) use($activity) {
            $match = $match[0];
            $attribute = (string) string($match)->between(':', '.');
            if (!in_array($attribute, ['subject', 'causer', 'properties'])) {
                return $match;
            }
            $propertyName = substr($match, strpos($match, '.') + 1);
            $attributeValue = $activity->{$attribute};
            $attributeValue = $attributeValue->toArray();
            return array_get($attributeValue, $propertyName, $match);
        }, $description);
    }