Doctrine2 Filter Parameter empty value twig extensions - symfony

Question

In my application a company has their own subdomain. Im listening to kernel request event and setting the Company Filter(Doctrine Filter) parameter based on the company matching the subdomain.
public function setCompanyFilter($companyId)
{
/** #var EntityManager $entityManager */
$entityManager = $this->container->get('doctrine')->getManager();
$filters = $entityManager->getFilters();
$companyFilter = $filters->isEnabled('company_filter')
? $filters->getFilter('company_filter')
: $filters->enable('company_filter');
$companyFilter->setParameter('company', $companyId);
}
The issue im having is that on twig extensions(filter/functions) the parameter is not setted. If i set the value before execute a filter/function everything works as expected.
Is there any way to execute some code before every twig filter/function/tag? Like listening to an twig event? Or how can i solve this issue without calling the setCompanyFilter on every twig filter/function/tag.
Thanks

Answer 1

Why not set the custom value in the same event (i.e. kernel.request) that you are already listening to?
I assume you are using a custom twig extension. If not extend the filter/function you are already using and do the same:
<?php
// src/AppBundle/Twig/AppExtension.php
namespace AppBundle\Twig;
class AppExtension extends \Twig_Extension
{
private $customParameter;
public function getFilters()
{
return array(
new \Twig_SimpleFilter('price', array($this, 'priceFilter')),
);
}
public function priceFilter($number, $decimals = 0, $decPoint = '.', $thousandsSep = ',')
{
$price = number_format($number, $decimals, $decPoint, $thousandsSep);
$price = '$'.$price;
return $price;
}
public function getName()
{
return 'app_extension';
}
public function setCustomParameter($parameter)
{
$this->customParameter = $parameter;
}
}
Inject the twig extension into your current listener and then call the method setCustomParameter, inject your custom parameter for use later in the request lifecycle, and then just call the filter/function as your normally would in your existing twig template.