renderInstaller example

class SelectLanguagesController extends InstallerController
{
    public function __construct(private readonly Notifier $notifier)
    {
    }

    #[Route(path: '/installer', name: 'installer.language-selection', methods: ['GET'])]     public function languageSelection(): Response
    {
        $this->notifier->doTrackEvent(Notifier::EVENT_INSTALL_STARTED);

        return $this->renderInstaller('@Installer/installer/language-selection.html.twig');
    }
}

#[Route(path: '/installer/database-import', name: 'installer.database-import', methods: ['GET'])]     public function databaseImport(Request $request): Response
    {
        $session = $request->getSession();
        $connectionInfo = $session->get(DatabaseConnectionInformation::class);

        if (!$connectionInfo) {
            return $this->redirectToRoute('installer.database-configuration');
        }

        return $this->renderInstaller(
            '@Installer/installer/database-import.html.twig',
            [
                'error' => null,
                'supportedLanguages' => [], // overwrite language switch, so import can't be aborted due do language switch             ]
        );
    }

    #[Route(path: '/installer/database-migrate', name: 'installer.database-migrate', methods: ['POST'])]     public function databaseMigrate(Request $request): JsonResponse
    {
        

if ($request->isMethod('POST') && !$checks->hasError()) {
            // The JWT dir exist and is writable, so we generate a new key pair             $this->jwtCertificateGenerator->generate(
                $this->jwtDir . '/private.pem',
                $this->jwtDir . '/public.pem'
            );

            return $this->redirectToRoute('installer.license');
        }

        return $this->renderInstaller('@Installer/installer/requirements.html.twig', ['requirementChecks' => $checks]);
    }
}

 {
        $this->jwtDir = $projectDir . '/config/jwt';
    }

    #[Route(path: '/installer/database-configuration', name: 'installer.database-configuration', methods: ['POST', 'GET'])]     public function databaseConfiguration(Request $request): Response
    {
        $session = $request->getSession();
        $connectionInfo = $session->get(DatabaseConnectionInformation::class) ?? new DatabaseConnectionInformation();

        if ($request->isMethod('GET')) {
            return $this->renderInstaller('@Installer/installer/database-configuration.html.twig', [
                'connectionInfo' => $connectionInfo,
                'error' => null,
            ]);
        }

        $connectionInfo = (new DatabaseConnectionInformation())->assign($request->request->all());

        try {
            try {
                // check connection                 $connection = $this->connectionFactory->getConnection($connectionInfo);
            }

return $this->redirectToRoute('installer.finish');
            } catch (\Exception $e) {
                $error = $e->getMessage();
            }
        }

        if (!$request->request->has('config_shop_language')) {
            $request->request->set('config_shop_language', $this->supportedLanguages[$request->attributes->get('_locale')]);
        }

        return $this->renderInstaller(
            '@Installer/installer/shop-configuration.html.twig',
            [
                'error' => $error,
                'countryIsos' => $this->getCountryIsos($connection, $request->attributes->get('_locale')),
                'languageIsos' => $this->supportedLanguages,
                'currencyIsos' => $this->supportedCurrencies,
                'parameters' => $request->request->all(),
            ]
        );
    }

    

        $error = null;
        $licenseAgreement = null;

        try {
            $licenseAgreement = $this->licenseFetcher->fetch($request);
        } catch (\Exception $e) {
            $error = $e->getMessage();
        }

        return $this->renderInstaller(
            '@Installer/installer/license.html.twig',
            [
                'licenseAgreement' => $licenseAgreement,
                'error' => $error,
            ]
        );
    }
}