What is Twig Profiler in twig template engine and how do we use it?

Question

Twig comes with some extensions, one of these extensions is Twig_Profiler , I tried to inject a Profiler object but it does not work:

$twig->addExtension(new Twig_Extension_Profiler(new Twig_Profiler_Profile()));

This code won't show me any profiling nor a toolbar ( What Symfony does in its Profiler ).

Any idea please?

Answer 1

The Twig Profiler is a visual shell for the symfony profiler in twig.

By default only requests with a bad response are logged into the profiler. When you have an exception in your code, the twig profiler toolbar will apear which you can then click to see a detailed overview of the request and the exception