How to use Swift Mailer in Command - php

Question

I have this code...
namespace AppBundle\Command;
use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
class NotificationCommand extends ContainerAwareCommand
{
protected function configure()
{
$this->setName('app:notif');
}
public function execute(InputInterface $input, OutputInterface $output)
{
$message = \Swift_Message::newInstance()
->setFrom([
'from#example.com' => 'Example'
])
->setTo('to#example.com')
->setSubject('Subject')
->setBody(
$this->getContainer()->renderView(
'emails/notify.html.twig', [
'foo' => 'bar',
]
),
'text/html'
);
$this->getContainer()->get('mailer')->send($message);
}
}
And I get an error in response
Attempted to call an undefined method named "renderView" of class
"ContainerV5drzta\appDevDebugProjectContainer".
How do I use Swift Mailer in my Command (Symfony 3.4)?

Answer 1

You can dependency inject these services that should solve the problem and it's also the way Symfony is trying to turn towards.
public function __construct(
EngineInterface $templating,
\Swift_Mailer $mailer,
) {
$this->templating = $templating;
$this->mailer = $mailer;
parent::__construct();
}
You can now in your execute() render a template like so:
$message = (new \Swift_Message('My message'))
->setFrom('foo#bar.com')
->setTo('bar#foo.com')
->setBody($this->templating->render('mytemplate.html.twig'), 'text/html');
$this->mailer->send($message);
You can read more about dependency injecting in Symfony here or a more generic article here.