Symfony -undefined method named "render" of class - symfony

Question

im new to symfony framework. it raises render error. i tried all suggestions
#App/default/index.html.twig
AppBundle:default:index.html.twig
default/index.html.twig
routing.yml
app:
resource: "#AppBundle/Controller/"
type: annotation
lucky_number:
path: /lucky/number/{count}
defaults: { _controller: AppBundle:Lucky:number }
LuckyController.php
namespace AppBundle\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class LuckyController
{
/**
* #Route("/lucky/number/{count}")
*/
public function numberAction($count)
{
$number = rand(0, 100);
$html = $this->render('#App/default/index.html.twig','number'=>$number);
//$html = $this->container->get('templating')->render('AppBundle:default:index.html.twig',array('number' => $number));
//$html = $this->container->get('templating')->render('default/index.html.twig',array('number' => $number));
return new Response($html);
}
}
Error:
Attempted to call an undefined method named "render" of class
"AppBundle\Controller\LuckyController".

Answer 1

You forgot to extend your controller class with the symfony controller.
namespace AppBundle\Controller;
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;
class LuckyController extends Controller // <-- HERE
{
/**
* #Route("/lucky/number/{count}")
*/
public function numberAction($count)
{
$number = rand(0, 100);
return $this->render('AppBundle:default:index.html.twig',array('number' => $number));
}
}