[Catalyst] Unable to output anything in Root.pm -> 'auto'

[Craig Chant]

"By the way, what do you need the session-id for? Catalyst handles sessions in a transparent way"

To authenticate users, I don't want to store authentication in the hash and it seems the only other way to do this is via ORM, which I don't want to use either.

I find catalyst whenever I look at how it implements anything to do with DB access, it forces ORM upon you, so I need to write my own authentication code don't I ?

-----Original Message-----
From: Lukas Thiemeier [mailto:spamcatcher at thiemeier.net]
Sent: 29 October 2012 15:39
To: catalyst at lists.scsys.co.uk
Subject: Re: [Catalyst] Unable to output anything in Root.pm -> 'auto'

Hi again,

about the missing sessionid:

I don't know much about the internals of Catalyst::Plugin::Session, but I guess that the session is a lazy attribute, and only created if used.
This means: unless you put something in the session, you will not have one, and therefore have no session-id.

This is very handy, because the overhead related to creating and restoring a session is only executed if the session is really needed.
If your app has a session-less interface without authentication, and extra functionality for authenticated users, the session will only be created for authenticated users.

If you touch your session object before fetching the session-id, it will
work:

$c->session;
$c->res->body("SESSIONID " . $c->sessionid);

As soon as you implemented authentication, the session will be used and the session-id will be set.

By the way, what do you need the session-id for? Catalyst handles sessions in a transparent way. In most cases, you don't need to access the session-id in your code. And if it is only for debugging: The session plugin writes the session-id to $c->log when a session is created or restored. This means: the code showed above will result in the session-id being printed twice :)

Lukas

On 10/29/2012 04:04 PM, Craig Chant wrote:
> Oh I also tried changing it to 'begin' instead of 'auto', still
> doesn't work?
>
>
>
> I also thought that all calls to ANY method / sub will always be
> passed $self & $c , only it doesn't seem to be passing in $c and I've
> had to manually do it?
>
>
>
> I've tried...
>
>
>
> # always runs first!
>
> sub begin :Private {
>
>     my ( $self, $c ) = @_;
>
>
>
>     # Authenticate
>
>     $self->AuthenticateUser($c);
>
>     return 1;
>
>
>
> }
>
>
>
> sub AuthenticateUser {
>
>
>
>     my ( $self, $c ) = @_;
>
>
>
>     die 'Session ID = ' . $c->sessionid;
>
>
>
> }
>
>
>
> But there is no session ID.
>
>
>
> I am still getting the "Use of uninitialized value in concatenation
> (.) or string"  error.
>
>
>
> I've read
> http://search.cpan.org/~mramberg/Catalyst-Plugin-Session-0.14/lib/Cata
> lyst/Plugin/Session/Tutorial.pod
>
>
>
> Where it states :  These plugins will automatically set
> |$c->sessionid|at the begining of the request, and automatically cause
> |$c->sessionid|to be saved by the client at the end of the request.
>
> So why is $c->sessionid uninitialized?
>
>
>
> Any ideas where my session info is?
>
>
>
> Thanks,
>
>
>
> Craig
>
>
>
> *From:*Craig Chant [mailto:craig at homeloanpartnership.com]
> *Sent:* 29 October 2012 14:54
> *To:* The elegant MVC web framework
> *Subject:* RE: [Catalyst] Unable to output anything in Root.pm -> 'auto'
>
>
>
> Nope, no change; same warning in the devel output and all that happens
> is the  welcome screen loads?
>
>
>
> *From:*Ben Vinnerd [mailto:ben+catalyst at vinnerd.com]
> <mailto:[mailto:ben+catalyst at vinnerd.com]>
> *Sent:* 29 October 2012 14:48
> *To:* The elegant MVC web framework
> *Subject:* Re: [Catalyst] Unable to output anything in Root.pm -> 'auto'
>
>
>
> Private methods have to return a true value to continue processing.
>
> Try adding "return 1" at the end of the method.
>
> Ben
>
> On 29 October 2012 14:23, Craig Chant <craig at homeloanpartnership.com
> <mailto:craig at homeloanpartnership.com>> wrote:
>
> Hi,
>
>
>
> I seem to be going round in circles unable to get Catalyst to output
> anything via 'auto'?
>
>
>
> I made a change to the Root.pm to try to add authentication via the
> 'auto' method, but it does nothing?
>
>
>
> # always runs first!
>
> sub auto :Private {
>
>     my ( $self, $c ) = @_;
>
>
>
>     # Authenticate
>
>     $c->response->body('Matched Members::Controller::Auto in Root.' .
> $c->sessionid);
>
>
>
> }
>
>
>
> This doesn't output anything and I simply get the welcome screen, plus
> there is a warning in the devel server output of
>
>
>
> "Use of uninitialized value in concatenation (.) or string"
>
>
>
> I have ..
>
>
>
> use Catalyst qw/
>
>     -Debug
>
>     ConfigLoader
>
>     Static::Simple
>
>     StackTrace
>
>     Session
>
>     Session::Store::FastMmap
>
>     Session::State::Cookie
>
> /;
>
>
>
> In my main MyApp.pm
>
>
>
> Why is $c->response->body not working and why is the sessionid empty?
>
>
>
> Thanks
>
>
>
> */Craig Chant/*
>
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