Re: [Dancer-users] Generating PDF with Template-Plugin-Latex fails inside route handler

9 Jan 2011

      Am 08.01.2011 16:32, schrieb Alastair Sherringham:
...
Mike,
The docs for "system" e.g.
http://perldoc.perl.org/functions/system.html
talk about the return code - and how to interpret it. I've had a play
with Dancer using the code as per perldoc "system" - see below. Not
sure what the issue is.
1) Run via dancer built in server :
perl bin/app.pl
http://localhost:3000 shows :
Got : [failed to execute: No child processes]
2) Run via plackup :
plackup -p 3000 bin/app.pl
http://localhost:3000 shows :
Got : [child exited with value 0]
I expect (2) - and it is what I get on the command line (with the
subroutine run_cmd()). Something is different with running via the
dancer server - not sure what.
Code :
#-----------------------------------------------------------------------------------
package TestApp;
use Dancer ':syntax';
our $VERSION = '0.1';
get '/' => sub {
    my $o = run_cmd();
    return "<p>Got : [$o]</p>";
};
sub run_cmd
{
    my ($return,$msg);
    system("/usr/local/bin/hg","--version");
    $return = $?;
if ($? == -1) {
        $msg = "failed to execute: $!";
    }
    elsif ($? & 127) {
        $msg = sprintf("child died with signal %d, %s coredump",
            ($? & 127), ($? & 128) ? 'with' : 'without');
    }
    else {
        $msg = sprintf("child exited with value %d", $? >> 8);
    }
    return $msg;
}
true;
#------------------------------------------------------------------
Cheers,
Alastair
On 7 January 2011 23:38, Mike Mandel <mandel@stud.fh-hannover.de> wrote:
...
Hello,
I tracked it down a little bit, and found out, that the return code
of the system() function is different inside a route handler than outside.
Could please someone test this?
Hi Alastair,

thanks for the hint with plackup.
I have tried it and it works now as it should.

Thanks,

Mike