[Catalyst] accessing the name of the logged user

[Octavian Rasnita]

Hi,

Can you tell me how can I access the name of the currently logged user for 
printing it in a TT template?

I have tried:

if ($c->user_exists) {
$c->stash->{user} = $c->user;
}

But it gives the following error:

Coldn't render template "undef error - Can't call method "from_session" on 
an undefined value at
D:/usr/site/lib/Catalyst\Plugin\Authentication.pm line 122.

I have spent a lot of time for finding that this is the problem, and I even 
found some threads on the list about this issue, but the only solution I 
have seen was to downgrade from C::P::Authentication 0.08 to 0.007, or to 
upgrade to 0.09. I am already using the version 0.09 though.

If I use the following static text, it works:

if ($c->user_exists) {
$c->stash->{user} = "Gigi";
}

So the issue is using $c->user. How can I access the user in another way 
that doesn't give errors?

I have also tried (in the code and templates):

$c->user->name
$c->user->username
[% c.user %]

But all of them use in fact $c->user, so of course they didn't work.

Thank you very much for any solution.

Octavian