Symfony 2 service container is null

php, symfony

Solution

//services.yml
service:
    myname_googleapi_youtube:
        class: Myname\GoogleApiBundle\Controller\YouTubeController
        arguments: [@service_container]

And you would have:

<?php

namespace Myname\GoogleApiBundle\Controller

use Symfony\Component\DependencyInjection\ContainerInterface;

class YouTubeController
{
    /**
    * @param ContainerInterface $container
    */
    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
    }

    /**
    * Obtain some results
    */
    public function getResultFunction()
    {
        $parameter = $this->container->getParameter('a');
        //...
    }

    /**
    * Get a service from the container
    *
    * @param string The service to get
    */
    protected function get($service)
    {
        return $this->container->get($service);
    }
}

This practice is very controversial, so I'd recommend that you have a quick read at these:

- Controllers as Services in Symfony2

- Do you want DIC with that Controller?

- Symfony2: Make my Controllers Services?

Problem

I am new to Symfony 2 and trying to create some simple application to learn. I created a bundle `GoogleApiBundle`. Inside the bundle, I have a controller `YouTubeController`, which is a service: ``` //services.yml service: myname_googleapi_youtube: class: Myname\GoogleApiBundle\Controller\YouTubeController ``` In another bundle, I try to call a function in `YouTubeController` ``` //anotherController.php $service = $this->get('myname_googleapi_youtube'); $result = $service->getResultFunction(); //YouTubeController.php public function getResultFunction() { $parameter = $this->container->getParameter('a'); //... } ``` Then I get an exception `FatalErrorException: Error: Call to a member function getParameter() on a non-object ...`, because `$this->container` is `NULL`. I searched but didn't get an answer. Am I doing wrong?

Original source