How to get the full url for an asset in Controller?

Question

I need to generate some JSON content in controller and I need to get the full URL to an uploaded image situated here : /web/uploads/myimage.jpg.

How can

Answer 1

For CDNs, you can also inject the Packages directly into your service.

First the asset base url in config.yml:

framework:
    assets:
        base_url:
            - 'http://cdn.mysite.com'

Then the fun part:

namespace App\Service;

use Symfony\Component\Asset\Packages;

class SomeClass
{
    private $packages;

    public function __construct(Packages $packages)
    {
        $this->packages = $packages;
    }

    public function proxyToAssetUrl(string $path): string
    {
        return $this->packages->getUrl($path);
    }
}

If you have autowiring enabled then you won't need to configure anything in your services.yml, otherwise something like:

services:
    App\Service\SomeClass:
        class: App\Service\SomeClass
        arguments: ['@assets.packages']