RenderView in Symfony Command usage - symfony

Question

How can I use $this->renderView inside a symfony Command (not inside a controller)? I new about the function "renderView" but what do I have to setup to use it wihtin a command?
Thank you in advance an regards

Answer 1

Your command class must extends the ContainerAwareCommand abstract class and then you can do:
$this->getContainer()->get('templating')->render($view, $parameters);
When it comes to commands that extend ContainerAwareCommand the proper way to obtain the container is by getContainer() unlike in controller shortcut.

Answer 2

In Symfony 4 I could not get $this->getContainer()->get('templating')->render($view, $parameters); to work.
I set the namespace use for Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand and extended ContainerAwareCommand class EmailCommand extends ContainerAwareCommand
I get an exception thrown
[Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException]
You have requested a non-existent service "templating".
For Symfony 4, this is the solution I came up with.
First I installed Twig.
composer require twig
Then created my own twig service.
<?php
# src/Service/Twig.php
namespace App\Service;
use Symfony\Component\HttpKernel\KernelInterface;
class Twig extends \Twig_Environment {
public function __construct(KernelInterface $kernel) {
$loader = new \Twig_Loader_Filesystem($kernel->getProjectDir());
parent::__construct($loader);
}
}
Now my email command looks like this.
<?php
# src/Command/EmailCommand.php
namespace App\Command;
use Symfony\Component\Console\Command\Command,
Symfony\Component\Console\Input\InputInterface,
Symfony\Component\Console\Output\OutputInterface,
App\Service\Twig;
class EmailCommand extends Command {
protected static $defaultName = 'mybot:email';
private $mailer,
$twig;
public function __construct(\Swift_Mailer $mailer, Twig $twig) {
$this->mailer = $mailer;
$this->twig = $twig;
parent::__construct();
}
protected function configure() {
$this->setDescription('Email bot.');
}
protected function execute(InputInterface $input, OutputInterface $output) {
$template = $this->twig->load('templates/email.html.twig');
$message = (new \Swift_Message('Hello Email'))
->setFrom('emailbot#domain.com')
->setTo('someone#somewhere.com')
->setBody(
$template->render(['name' => 'Fabien']),
'text/html'
);
$this->mailer->send($message);
}
}

Answer 3

Yet another one: rely on dependency injection, i.e. inject ContainerInterface
namespace AppBundle\Command;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Psr\Container\ContainerInterface;
class SampleCommand extends Command
{
public function __construct(ContainerInterface $container)
{
$this->templating = $container->get('templating');
parent::__construct();
}
protected function configure()
{
$this->setName('app:my-command')
->setDescription('Do my command using render');
}
protected function execute(InputInterface $input, OutputInterface $output)
{
$data = retrieveSomeData();
$csv = $this->templating->render('path/to/sample.csv.twig',
array('data' => $data));
$output->write($csv);
}
private $templating;
}
This relies on Symfony to inject the container, which in turn is used to retrieve either templating or twig or whatever you need for your custom command.