How to inject the @request into a service?

Question

When I try to inject the @request into any of my services, I get this exception:

ScopeWideningInjectionException: Scope Widening Injection detected:

Answer 1

I think it's more important to focus on getting the request instead of setting it. I would do something similar to @Blowski's solution, except using a getter. This is very similar to the documentation's example.

namespace Acme\HelloBundle\Newsletter;

use Symfony\Component\HttpFoundation\RequestStack;

class NewsletterManager
{
    protected $requestStack;

    public function __construct(RequestStack $requestStack)
    {
        $this->requestStack = $requestStack;
    }

    protected function getRequest()
    {
        return $this->requestStack->getCurrentRequest();
    }

    public function foo()
    {
        $request = $this->getRequest();
        // Do something with the request
    }
}

And your services.yml config file.

services:
    newsletter_manager:
        class:     Acme\HelloBundle\Newsletter\NewsletterManager
        arguments: ["@request_stack"]

Now you're always sure that you're getting the correct request, and you don't have to worry about setting/re-setting the request.