How to secure any Service or Method in your Application¶

In the security chapter, you can see how to secure a controller by requesting the security.context service from the Service Container and checking the current user’s role:

// ...
use Symfony\Component\Security\Core\Exception\AccessDeniedException;

public function helloAction($name)
{
    if (false === $this->get('security.context')->isGranted('ROLE_ADMIN')) {
        throw new AccessDeniedException();
    }

    // ...
}

You can also secure any service in a similar way by injecting the security.context service into it. For a general introduction to injecting dependencies into services see the Service Container chapter of the book. For example, suppose you have a NewsletterManager class that sends out emails and you want to restrict its use to only users who have some ROLE_NEWSLETTER_ADMIN role. Before you add security, the class looks something like this:

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// src/Acme/HelloBundle/Newsletter/NewsletterManager.php
namespace Acme\HelloBundle\Newsletter;

class NewsletterManager
{

    public function sendNewsletter()
    {
        // ... where you actually do the work
    }

    // ...
}

Your goal is to check the user’s role when the sendNewsletter() method is called. The first step towards this is to inject the security.context service into the object. Since it won’t make sense not to perform the security check, this is an ideal candidate for constructor injection, which guarantees that the security context object will be available inside the NewsletterManager class:

namespace Acme\HelloBundle\Newsletter;

use Symfony\Component\Security\Core\SecurityContextInterface;

class NewsletterManager
{
    protected $securityContext;

    public function __construct(SecurityContextInterface $securityContext)
    {
        $this->securityContext = $securityContext;
    }

    // ...
}

Then in your service configuration, you can inject the service:

The injected service can then be used to perform the security check when the sendNewsletter() method is called:

namespace Acme\HelloBundle\Newsletter;

use Symfony\Component\Security\Core\Exception\AccessDeniedException;
use Symfony\Component\Security\Core\SecurityContextInterface;
// ...

class NewsletterManager
{
    protected $securityContext;

    public function __construct(SecurityContextInterface $securityContext)
    {
        $this->securityContext = $securityContext;
    }

    public function sendNewsletter()
    {
        if (false === $this->securityContext->isGranted('ROLE_NEWSLETTER_ADMIN')) {
            throw new AccessDeniedException();
        }

        // ...
    }

    // ...
}

If the current user does not have the ROLE_NEWSLETTER_ADMIN, they will be prompted to log in.

namespace Acme\HelloBundle\Newsletter;

use JMS\SecurityExtraBundle\Annotation\Secure;
// ...

class NewsletterManager
{

    /**
     * @Secure(roles="ROLE_NEWSLETTER_ADMIN")
     */
    public function sendNewsletter()
    {
        // ...
    }

    // ...
}