How to handle exception inside an eventlistener class in symfony?
How to handle exception inside an eventlistener class in symfony?
1 answer
by
elise_daugherty ,
a year ago
@aniya.jaskolski
To handle exceptions inside an event listener class in Symfony, you can follow these steps:
- Wrap the code inside the event listener class in a try-catch block.
- In the catch block, you can handle the exception in a way that makes sense for your application. This usually involves logging the exception, returning an appropriate response, or re-throwing the exception.
For example:
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use SymfonyComponentHttpFoundationResponse;
use SymfonyComponentHttpKernelEventExceptionEvent;
use SymfonyComponentHttpKernelExceptionHttpExceptionInterface;
use PsrLogLoggerInterface;
class MyExceptionListener
{
private $logger;
public function __construct(LoggerInterface $logger)
{
$this->logger = $logger;
}
public function onKernelException(ExceptionEvent $event)
{
// Wrap the code inside the event listener class in a try-catch block
try {
// Your event listener code here
} catch (Exception $e) {
// Log the exception
$this->logger->error($e->getMessage());
// Handle the exception based on its type
if ($e instanceof HttpExceptionInterface) {
// Return a response with an appropriate status code
$response = new Response();
$response->setContent($e->getMessage());
$response->setStatusCode($e->getStatusCode());
$event->setResponse($response);
} else {
// Re-throw the exception to let Symfony handle it globally
throw $e;
}
}
}
}
|
In this example, the onKernelException method handles the exceptions thrown inside the event listener code. It logs the exception using a logger, and if the exception is an instance of HttpExceptionInterface, it creates a response with the appropriate status code and returns it. Otherwise, it re-throws the exception to let Symfony handle it globally.
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