Setting defaults for number_format in Symfony 2

Question

The twig documentation describes how to set the default parameters for the number_format extension. How can I set this in Symfony 2?

Answer 1

Symfony2 does not give access to core extension of twig. You can create a kernel.request event listener, inject twig service and in onKernelRequest method of the listener you have to add

$this->twig->getExtension('core')->setNumberFormat(3, ',', '.');