How to use authorizationChecker inside a trait - symfony

Question

I have a trait that checks if a user is logged in or not and number of attempts to a specific location.
This trait I am trying to use inside a FormType in order to display a captcha after a number of attempts.
Inside getIpOrUserId() I am trying to check if user is logged in $this->get('security.authorization_checker')->isGranted('IS_AUTHENTICATED_FULLY') but it returns an error
Attempted to call an undefined method named "get" of class.
I don't think that it is possible to create a Trait as a Service so I can inject the security object.
Is there a way to achieve this?
Trait
<?php
Trait CheckAttempts {
public function getTryAttempts()
{
if ($this->getIpOrUserId() == null) {
return false;
} else {
$attempts = $this->getDoctrine()
->getRepository('SiteBundle:LoginAttempts')
->findOneByIpOrUserId($this->getIpOrUserId());
}
return $attempts->getAttempts();
}
protected function getIpOrUserId()
{
//get logged in user
//if ($this->authorizationChecker->isGranted('IS_AUTHENTICATED_FULLY')) {
if ($this->get('security.authorization_checker')->isGranted('IS_AUTHENTICATED_FULLY')) {
$ipOrUserId = $this->get('security.token_storage')->getToken()->getUser()->getId();
} else {
$ipOrUserId = $this->container->get('request_stack')->getCurrentRequest()->getClientIp();
}
return $ipOrUserId;
}
FormType
class RegisterType extends AbstractType
{
use FormSendLimitTrait;
public function buildForm(FormBuilderInterface $builder, array $options)
{
$builder->addEventListener(FormEvents::PRE_SET_DATA, function (FormEvent $event) {
$form = $event->getForm();
var_dump($this->getTryAttempts());
$form->add('captcha', 'captcha',
'label' => 'site.captcha'
]);
/*if ($attempts->getAttempts() > 6) {
$form->add('captcha', 'captcha', [
'label' => 'site.captcha'
]);
}*/
})

Answer 1

get method works only if you extend Symfony\Bundle\FrameworkBundle\Controller\Controller class, usually it is used inside your controller classes. And it returns only $this->container->get($id), nothing else, this means it returns Symfony\Component\DependencyInjection\Container class. You should inject security.authorization_checker service into your class (or other services which you want), or even whole service_container service (but it's not recommended).
Example:
class MyClass
{
private $securityChecker;
public function __construct(Symfony\Component\Security\Core\Authorization\AuthorizationChecker $securityChecker)
{
$this->securityChecker = $securityChecker;
}
...
}
services.yml
services:
my_class_service:
class: Acme\DemoBundle\MyClass
arguments:
- #security.authorization_checker
But in your case you should not use traits like you're doing.