Devise\Support\Console\DeviseInstallCommand::askAboutDatabasePass PHP 메소드

    protected function askAboutDatabasePass($default)
    {
        // allows for empty passwords
        if ($default === '') {
            $default = ' ';
        }
        $answer = $this->io()->ask("What is your database password?", $default);
        return trim($answer) === '' ? '' : $answer;
    }