10000 [Console] Added a note about the behavior of the command question helper by astepin · Pull Request #16978 · symfony/symfony-docs · GitHub
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[Console] Added a note about the behavior of the command question helper #16978

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[Console] Added a note about the behavior of the command question helper #16978

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28 changes: 28 additions & 0 deletions components/console/helpers/questionhelper.rst
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Expand Up @@ -66,6 +66,34 @@ the second argument is not provided, ``true`` is assumed.

The regex defaults to ``/^y/i``.

.. note::

When your output implements ``ConsoleOutputInterface`` the ``stderr`` output is used using :method:`ConsoleOutputInterf 7F3C ace::getErrorOutput`.
This output might have a different formatter than the default one. This might lead to unexpected results.
If this is the case, you can apply custom styles directly on to the error output::

use Symfony\Component\Console\Formatter\OutputFormatterStyle;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Question\Question;

// ...
public function execute(InputInterface $input, OutputInterface $output)
{
// ...
$question = new Question('Please enter the name of the bundle', 'AcmeDemoBundle');

if($output instanceof ConsoleOutputInterface) {
$output = $output->getErrorOutput();
}

$outputStyle = new OutputFormatterStyle('red', 'yellow', ['bold', 'blink']);
$output->getFormatter()->setStyle('fire', $outputStyle);

$bundleName = $helper->ask($input, $output, $question);
}

More information on formatting can be found on the :doc:`/components/console/helpers/formatterhelper` page.

Asking the User for Information
-------------------------------

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