Re: [Templates] how to see error messages

>>>>> "Dave" == Dave Howorth <dhoworth@xxxxxxx.xxx.xx.xx> writes:

>>>>> "Dave" == Dave Howorth <dhoworth@xxxxxxx.xxx.xx.xx> writes:

Dave> A while ago I posted a question about how to retrieve diagnostic
Dave> information but didn't get any replies. So I'd like to rephrase my
Dave> question to see if anybody can help.

Dave> In my template, I say something like:

Dave>    [% USE c = Class('MyClass') ;
Dave>       v = c.some_method(args) %]

Dave> My problem is that some_method is dying but I don't get any diagnostic
Dave> output. It seems as though TT just swallows the message. I've tried

Dave>    Template::Provider->new({DEBUG => 'all'});

Dave> but that still doesn't show the die message from my method.

Dave> Can anybody tell me how to retrieve this message?

Either use template-level TRY blocks:

    TRY;
      USE c = Class('MyClass');
      v = c.some_method(args);
    CATCH;
      FILTER stderr;
        "Caught ${error.type} with ${error.info}\n";
      END;
    END;

or be sure you're looking at the errors coming out of ->process:

    eval {
      ...
      $tt->process(...)
        or die $tt->error;
      ...
    };
    if ($@) {
      if (UNIVERSAL::isa($@, "Template::Exception")) {
        ## error came from Template or below
        if ($@->type eq "undef") { # yes, the letters u n d e f!
          die $@->info; # the error from below Template (perl code plugins)
        } else {
          ## the error came from a Template step, do what you want
          die "$@"; # stringifies the Template error
        }
      } else {
        ## the error came from above Template (something else in the eval)
        die $@; # throw it again
      }
    }        

        -- 
        Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<merlyn@xxxxxxxxxx.xxx> <URL:http://www.stonehenge.com/merlyn/>
Perl/Unix/security consulting, Technical writing, Comedy, etc. etc.
See PerlTraining.Stonehenge.com for onsite and open-enrollment Perl training!

_______________________________________________
templates mailing list
templates@xxxxxxxxxxxxxxxx.xxx
http://lists.template-toolkit.org/mailman/listinfo/templates