Why doesn't $em = $this->getDoctrine()->getManager(); code work?

Question

symfony

Ordinary controller (extends from Controller). throws an error:
$em = $this->getDoctrine()->getManager();

Error: Call to a member function get() on a non-object

What is the problem?

Answer 1

debug, break, see what $this is.

Answer 2

Your Controller doesn't have a Container. Maybe you manually created a controller instance: new MyController() without injecting a Container into it?