inanzzz | Calling a console command from a controller to get a result

We can create a console command to do some work for us and return a result after calling it from a controller. Example below multiplies given numbers, returns the result and takes a log.

Services.yml

services:
    application_backend.command.calculator:
        class: Application\BackendBundle\Command\CalculatorCommand
        calls:
            - [setContainer, [@service_container]]

CalculatorCommand

namespace Application\BackendBundle\Command;

use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Output\OutputInterface;

class CalculatorCommand extends ContainerAwareCommand
{
    /**
     * @var $logger LoggerInterface
     */
    private $logger;

    protected function configure()
    {
        $this
            ->setName('get:total')
            ->addArgument(
                'controller',
                InputArgument::REQUIRED,
                'What is controller name?'
            )
            ->addArgument(
                'primary',
                InputArgument::REQUIRED,
                'What is primary number?'
            )
            ->addArgument(
                'secondary',
                InputArgument::OPTIONAL,
                'What is secondary number?'
            )
            ->setDescription('This multiplies given numbers.');
    }

    protected function initialize(InputInterface $input, OutputInterface $output)
    {
        $this->logger = $this->getContainer()->get('logger');
    }

    protected function execute(InputInterface $input, OutputInterface $output)
    {
        $this->logger->info(
            sprintf(
                'Calling CalculatorCommand from [%s] with [%s] [%s] argument(s) at %s.',
                $input->getArgument('controller'),
                $input->getArgument('primary'),
                $input->getArgument('secondary'),
                date('Y-m-d H:i:s')
            )
        );

        return $input->getArgument('primary') * $input->getArgument('secondary');
    }
}

ApiController

Assuming that you've injected @application_backend.command.calculator into controller via controllers.yml file.

namespace Application\BackendBundle\Controller;

use Application\BackendBundle\Command\CalculatorCommand;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Output\NullOutput;
use Symfony\Component\HttpFoundation\Response;

class ApiController extends AbstractController
{
    ......
    ......

    public function indexAction()
    {
        $input = new ArrayInput(['controller'=> 'ApiController', 'primary'=> 5, 'secondary'=> 3]);
        $output = new NullOutput();
        $result = $this->calculatorCommand->run($input, $output);

        return new Response($result);
    }
}

Test

If you call controller above, the response will be 15 and the log record in dev.log file will contain line below.

[2015-07-26 17:02:35] app.INFO: Calling CalculatorCommand from [ApiController] with [5] [3] argument(s) at 2015-07-26 17:02:35. [] []