Imagine you have a class manager to manages sending mails (be called MailManager).
In this, you have to log mails that are sent. A good solution is to transform the MailManager class into a service
and then inject class for creating logs (Monolog
for example) into the MailManager creating a service.
To do this :
1- Declare future MailManager class as service (in services.yml)
services:
mail.manager.class:
class: Vendor/YourBundle/Manager/MailManager
2- Inject logger existant service using argument
method
services:
mail.manager.class:
class: Project/Bundle/Manager/MailManager
arguments: ["@logger"] # inject logger service into constructor
3- Create MailManager class
<?php
namespace Project\Bundle\Manager;
use Symfony\Component\HttpKernel\Log\LoggerInterface;
class MailManager
{
protected $logger;
//initialized logger object
public function __construct(LoggerInterface $logger)
{
$this->logger = $logger;
}
public function sendMail($parameters)
{
//some codes to send mail
//example using logger
$this->logger->info('Mail sending');
}
}
4- Call MailManager in a Controller for example
<?php
class TestController extends Controller
{
public function indexAction()
{
//some codes...
//call mail manager service
$mailManager = $this->get('mail.manager.class');
//call 'sendMail' function from this service
$mailManager->sendMail($parameters);
}
}