APCu Adapter & Symfony 3.3 -> Error - php

Question

I am trying to plug APCu into the Symfony 3.3 test project.
I am getting an error, when I add ApcuAdapter to AppKernel.php.
Here is the list of what I have done:
in ./app/AppKernel.php i have added a "new" line to $bundles in public function registerBundles():
public function registerBundles()
{
$bundles = [
... ,
new Symfony\Component\Cache\Adapter\ApcuAdapter()
];
...
return $bundles;
}
Opened the project's site. It shows an error:
Attempted to call an undefined method named "getName" of class "Symfony\Component\Cache\Adapter\ApcuAdapter".
(./ means the root folder of the project)
Please, tell me why does this error happen and how to plug this adapter into the symfony framework. Thank you.

Answer 1

me have found the solution somewhere on the framework's website.
somehow, we should use not the Adapter, but the Simple instead.
seems very un-logical to me.
so, the Service now works and looks this way:
<?php
namespace AppBundle\Service;
use Symfony\Component\Cache\Simple\ApcuCache;
class ApcuTester
{
public function __construct
(
)
{
}
public function testMe()
{
$cache = new ApcuCache();
$TestVar_dv = 0;
$TestVar_vn = 'TestVar';
$TestVar = NULL;
//$cache-> deleteItem($TestVar_vn); // dbg
// Read
if ( $cache->hasItem($TestVar_vn) )
{
$TestVar = $cache->get($TestVar_vn);
}
else
{
$cache->set($TestVar_vn, $TestVar_dv);
$TestVar = $TestVar_dv;
}
// Modify
$TestVar++;
// Save
$cache->set($TestVar_vn, $TestVar);
// Return
return $TestVar;
}
}
And the Controller which executes this Service looks as this:
<?php
namespace AppBundle\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
use Symfony\Component\HttpFoundation\Request;
use AppBundle\Service\MessageGenerator;
use AppBundle\Service\ApcuTester;
class LuckyController extends Controller
{
/**
* #Route("/lucky/number", name="lucky")
*/
public function numberAction
(
Request $request,
MessageGenerator $messageGenerator,
ApcuTester $apcuTester
)
{
$lucky_number = mt_rand(0, 100);
$message = $messageGenerator->getHappyMessage();
$testvar = $apcuTester->testMe();
$tpl = 'default/lucky_number.html.twig';
$tpl_vars =
[
'lucky_number' => $lucky_number,
'message' => $message,
'testvar' => $testvar
];
return $this->render($tpl, $tpl_vars);
}
}
If i wrote the same thing in pure PHP i would have done it an hour earlier :) Oh these crazy frameworks...