Generate a link from a service

So : you will need two things.

First of all, you will have to have a dependency on @router (to get generate()).

Secondly, you must set the scope of your service to "request" (I've missed that).http://symfony.com/doc/current/cookbook/service_container/scopes.html

Your services.yml becomes:

services:    myservice:        class: My\MyBundle\MyService        arguments: [ @router ]        scope: request

Now you can use the @router service's generator function !

Important note regarding Symfony 3.x: As the doc says,

The "container scopes" concept explained in this article has been deprecated in Symfony 2.8 and it will be removed in Symfony 3.0.

Use the request_stack service (introduced in Symfony 2.4) instead of the request service/scope and use the shared setting (introduced in Symfony 2.8) instead of the prototype scope (read more about shared services).

For Symfony 4.x, it's much easier follow the instructions in this link Generating URLs in Services

You only need to inject UrlGeneratorInterface in your service, and then call generate('route_name') in order to retrieve the link.

// src/Service/SomeService.phpuse Symfony\Component\Routing\Generator\UrlGeneratorInterface;class SomeService{    private $router;    public function __construct(UrlGeneratorInterface $router)    {        $this->router = $router;    }    public function someMethod()    {        // ...        // generate a URL with no route arguments        $signUpPage = $this->router->generate('sign_up');    }    // ...}

I had a similar issue, but using Symfony 3.While eluded to in the previous answer, it was a bit tricky to find out how exactly one would use request_stack to achieve the same thing as scope: request.

In this question's case, it would look something like this:

The services.yml config

services:    myservice:        class: My\MyBundle\MyService        arguments:            - '@request_stack'            - '@router'

And the MyService Class

<?php    namespace My\MyBundle;    use Symfony\Component\Routing\RequestContext;    class MyService {        private $requestStack;        private $router;        public function __construct($requestStack, $router) {            $this->requestStack = $requestStack;            $this->router = $router;        }        public doThing() {            $context = new RequestContext();            $context->fromRequest($this->requestStack->getCurrentRequest());            $this->router->setContext($context);            // of course, the die is an example            die($this->router->generate('BackoffUserBundle.Profile.edit'));        }    }

Note: Accessing RequestStack in the constructor is advised against since it could potentially try to access it before the request is handled by the kernel. So it may return null when trying to fetch the request object from RequestStack.