symfony - 如何要求用户在自定义控制台命令中提供输入？

Question

所以我用两个参数发出命令:

class ServerCommand extends ContainerAwareCommand
{
    protected function configure()
    {
        $this
            ->setName('chat:server')
            ->setDescription('Start the Chat server')
            ->addArgument('host', InputArgument::REQUIRED, 'Provide a hostname')
            ->addArgument('port', InputArgument::OPTIONAL, 'Provide a port number')
        ;
    }

但是 server:chat 命令没有要求我提供参数。

如何要求用户在自定义控制台命令中提供输入？

Answer 1

http://symfony.com/doc/current/components/console/helpers/questionhelper.html

protected function configure()
{
    $this
        ->setName('chat:server')
        ->setDescription('Start the Chat server')
        ->addArgument('host', InputArgument::REQUIRED, 'Provide a hostname')
        ->addArgument('port', InputArgument::OPTIONAL, 'Provide a port number')
    ;
}

protected function execute(InputInterface $input, OutputInterface $output)
{
    $helper = $this->getHelper('question');
    $question1 = new Question('Provide a hostname: ', 'localhost');
    $question2 = new Question('Provide a port number: ', '8080');

    $localhost = $helper->ask($input, $output, $question1);
    $port = $helper->ask($input, $output, $question2);