I want to avoid hard-coding relative URLs in my twig templates in a Symfony2 project.

I have defined some route names in my controllers, for example:

```
@Route("/", name="homepage")

```

Is there a Twig or Symfony2 function that could help me generate links properly? Something like:

```
<a href='{{ magic_fct("homepage") }}'>Home</a>

```

would return:

```
<a href='/'>Home</a>

```