Different Template per Firewall

Name: SymfonyCon Vienna 2024
Start: 2024-12-05
End: 2024-12-06

You're using two-factor authentication on multiple firewalls and you need to render the form differently for each firewall. Here's a basic solution for you:

Create a new form renderer class like this:

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        <?php

namespace Acme\Demo;

use Scheb\TwoFactorBundle\Security\TwoFactor\Provider\TwoFactorFormRendererInterface;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Security\Http\FirewallMapInterface;
use Twig\Environment;

class CustomFormRenderer implements TwoFactorFormRendererInterface
{
    public function __construct(
        private Environment $twigEnvironment,
        private FirewallMapInterface $firewallMap,
        private array $templates, // Map of [firewall name => template path]
    ) {
    }

    public function renderForm(Request $request, array $templateVars): Response
    {
        $firewallName = $this->firewallMap->getFirewallConfig($request)->getName();
        $template = $this->templates[$firewallName];

        $content = $this->twigEnvironment->render($template, $templateVars);
        $response = new Response();
        $response->setContent($content);

        return $response;
    }
}
    

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        # config/services.yaml
services:
    acme.custom_form_renderer:
        class: Acme\Demo\CustomFormRenderer
        arguments:
            - '@twig'
            - '@security.firewall.map'
            # This is a map of firewall name to template path
            - { main: 'security/2fa_google.html.twig', admin: 'admin/security/2fa_google.html.twig' } ]
    

Configure the new service as the form renderer:

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        # config/packages/scheb_2fa.yaml
scheb_two_factor:
    google:  # Or "totp" or "email", depending on the two-factor provider you're using
        enabled: true
        form_renderer: acme.custom_form_renderer
    

This work, including the code samples, is licensed under a Creative Commons BY-SA 3.0 license.

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