[Catalyst] Constructor's instrumentation

[Sebastian Riedel]

Am 04.10.2005 um 15:54 schrieb Antoine HULIN:

> I'd like to see what's going on in a model's constructor (the class is
> named Fact::M::Storage). So I added the following statement :
>
>  $c->log->info("taratata");
>
> The statement is executed but the script fails later on as shown in  
> the
> following trace :
>
>   gabuzo at meuh:~/Fact$ ./script/fact_server.pl
>   [Tue Oct  4 15:09:47 2005] [catalyst] [debug] Debug messages enabled
>   [Tue Oct  4 15:09:47 2005] [catalyst] [debug] Loaded dispatcher  
> "Catalyst::Dispatcher"
>   [Tue Oct  4 15:09:47 2005] [catalyst] [debug] Loaded engine  
> "Catalyst::Engine::HTTP"
>   [Tue Oct  4 15:09:47 2005] [catalyst] [debug] Found home "/home/ 
> gabuzo/Devel/Fact"
>   [Tue Oct  4 15:09:48 2005] [catalyst] [info] taratata
>   [Tue Oct  4 15:09:48 2005] [catalyst] [debug] Loaded components:
>   .=------------------------------------------------------------------ 
> ----------=.
>    
> |                                                                      
>        1 |
>   |  
> Fact::C::Reference                                                     
>        |
>   |  
> Fact::C::css                                                           
>        |
>   |  
> Fact::V::TT                                                            
>        |
>    
> '=-------------------------------------------------------------------- 
> --------='
>
>   Can't call method "isa" without a package or object reference at
>   /usr/share/perl5/Catalyst/Dispatcher.pm line 387.
>   Compilation failed in require at ./script/fact_server.pl line 13.
>   BEGIN failed--compilation aborted at ./script/fact_server.pl line  
> 13.
>
>
> Line 387 in Dispatcher is the inheritance test in setup_action() :
>
>         # We only setup components that inherit from Catalyst::Base
>     next unless $comp->isa('Catalyst::Base');
>
> I also replaced $c-log->info() with a print statement and got the same
> behaviour.
>
> I don't understand why this logging is so disturbing and I'd like to
> know what the right way to see what's going on in a constructor is.

So, you say that it didn't work, but you didn't say what it had done  
if it worked!
I'm not very good at prophesying, but i guess you borked something in  
the model class's new() method.
It always has to return a instance of itself!

--
sebastian