[Dancer-users] Debugging with Dancer

Alexis Sukrieh sukria at sukria.net
Tue Aug 24 10:42:39 CEST 2010

Le 24/08/2010 10:09, Peter Gordon a écrit :
> When debugging a web app, I find it much easier if I can run the app
> like this:
> perl -d myApp.pl color=red name=apple
Here is a way to go:

package FooApp;
use Dancer ':syntax';

our $VERSION = '0.1';

before sub {
     my $args = {};
     for my $arg (@ARGV) {
         my ($key, $val) = split(/=/, $arg);
         $args->{$key} = $val;
     return 1;

get '/' => sub {
     my $params = request->params;


$ perl -d ./FooApp.pl color=red name=apple

Loading DB routines from perl5db.pl version 1.32
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(./FooApp.pl:4):    load_app 'FooApp';
   DB<1> n
main::(./FooApp.pl:5):    dance;
 >> Dancer server 13461 listening on
== Entering the development dance floor ...

$ curl http://0:3000/
color: red
name: apple

This is indeed a good idea and I think this hack would deserve a plugin, 
like Dancer::Debug::ParamsFromArgv or something alike.

Happy dancing.

Alexis Sukrieh

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