Override bundle template from another bundle in Symfony 4/5

Question

because bundle inheritance is deprecated since Symfony 3.4 and will be removed in 4.0, I\'m finding a new solution. I have:

• Application
• FooBundle

Answer 1

So I have recently needed same functionality and with help from comment @NicoHasse I managed to make working example

In your bundle bundle extension class you need to implement PrependExtensionInterface and then you can modify twig paths. Then you need to know original namespace your you need to override (php bin/console debug:twig).

You can confirm its working with twig debug command where you should see your path at first place of that namespace.

class YourExtensionClass extends Extension implements PrependExtensionInterface
{
    public function prepend(ContainerBuilder $container)
    {
        $container->loadFromExtension('twig', [
            'paths' => [
                '%kernel.project_dir%/vendor/xx/yy/zzz' => 'OriginalVNamespace',
            ]
        ]);