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New in Symfony 2.3: Small things matter

by Fabien Potencier – May 17, 2013

What happened last week in Symfony?

This week, Symfony 2.3.0 released its second and last beta version. Among other features, this version supports the interactive management of the parameters.yml file and some nice improvements for the Console component. In addition, the Symfony 2.1.10 maintainance version and the Twig 1.13.0 version were released.

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New in Symfony 2.2: Autocomplete on the Command Line
by Fabien Potencier – January 09, 2013 – 9 comments

Contributed by
Lee McDermott
in #6391 and #6564.

Last month, I talked about some of the enhancements we made to the Console component for 2.2. Today, I want to show you another amazing enhancement: autocompletion on the command line!

The code to make it happen is very similar to the code you are already using when asking a question from within a command:

use Symfony\Component\Console\Application;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

$app = new Application();
$app->register('ask-color')->setCode(function (InputInterface $input, OutputInterface $output) use ($app) {
    $colors = array('red', 'blue', 'yellow', 'yellow-light', 'yellow-dark');
    $validation = function ($color) use ($colors) {
        if (!in_array($color, array_values($colors))) {
            throw new \InvalidArgumentException(sprintf('Color "%s" is invalid.', $color));
        }

        return $color;
    };

    // ask and validate the answer
    $dialog = $app->getHelperSet()->get('dialog');
    $color = $dialog->askAndValidate($output, 'Enter your favorite color (default to red): ', $validation, false, 'red', $colors);

    $output->writeln(sprintf('You have just entered: %s', $color));
});

$app->run();

The only difference is that you can now pass all valid answers as the last argument to the askAndValidate() method, and that changes everything. Here is a small video that demonstrates how the command behaves:

Using tabs and arrows, you can now type the right answer faster, without any possible typos! And it even works on Windows!

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Comments

#1 Julien M. said on the 2013/01/10 at 00:50

Simply awsome!
#2 Hugo Hamon said on the 2013/01/10 at 08:44

That's a really nice improvment!
#3 Adán Lobato said on the 2013/01/10 at 09:02

Love it!
#4 Victor Melnik said on the 2013/01/10 at 10:35

Cool feature, thanx
#5 Daniel Ancuta said on the 2013/01/10 at 11:21

Great!
#6 Grégory Pelletier said on the 2013/01/10 at 21:09

This will save a lot af time, thanks for the feature
#7 Jan Kozak said on the 2013/01/11 at 10:39

awesome!
#8 Michal Klik said on the 2013/01/11 at 21:17

Great addition
#9 Marco Solis said on the 2013/03/07 at 04:33

Perfect!