• Catalyst

package QuizBowl::Web;

use Moose;
use namespace::autoclean;

use Catalyst::Runtime;

use Catalyst qw/
  -Debug
  ConfigLoader
  Static::Simple
  Session
  Session::State::Cookie
  Session::Store::DBIC
  Authentication
  /;...

• Catalyst::Plugin::Session

__PACKAGE__->config(
    name => 'QuizBowl::Web',
    'Plugin::Session' => {
        dbic_class => 'DB::Session',
        expires    => 60 * 60 * 24 * 7 * 2,    # 2 weeks
        id_field   => 'session_id',
    },
);

• Catalyst::Plugin::Authentication

"Plugin::Authentication":
  default_realm: users
  realms:
    users:
      credential:
        class: Password
        password_field: password
        password_type: salted_hash
        password_salt_len: 4
        password_hash_type: SHA-1
      store:
        class: "DBIx::Class"
        user_model: "DB::User"

 sub login : Local {
    my ( $self, $c ) = @_; 
    if (
        $c->req->param('email')
        && $c->authenticate( ...

• Catalyst::Action::REST

package QuizBowl::Web::Controller::REST;

use Moose;
use namespace::autoclean;
BEGIN { extends 'Catalyst::Controller::REST' }
with 'Catalyst::TraitFor::Controller::DBIC::DoesPaging';
with 'Catalyst::TraitFor::Controller::DoesExtPaging';

__PACKAGE__->config(
    'default'                => 'application/json',
    'map'                    => {
        'text/html'                => 'YAML::HTML',
        'text/xml'                 => 'XML::Simple',
        'application/xml'          => 'XML::Simple',
        'text/x-yaml'              => 'YAML',
        'application/json'         => 'JSON',
...

• Catalyst::TraitFor::Controller::DBIC::DoesPaging
  
• Catalyst::TraitFor::Controller::DoesExtPaging

my $users_rs = $c->model('DB::User')->search( {} );
my $paginated_rs = $self->page_and_sort( $c, $users_rs );
my $data_r = $self->ext_paginate( $paginated_rs, 'REST_data' );

• Postgres
• DBIx::Class

package QuizBowl::Schema::Result::User;

use Moose;
use MooseX::NonMoose;
extends 'QuizBowl::Schema::Result';

__PACKAGE__->table('user_account');

__PACKAGE__->add_columns(
    user_id => {
        data_type   => 'serial',
        is_nullable => 0,
    },...

__PACKAGE__->set_primary_key('user_id');

__PACKAGE__->add_unique_constraint( unique_email => ['email'], );

__PACKAGE__->has_many(
    event_registrations => 'QuizBowl::Schema::Result::EventUser',
    'user_id',
);

__PACKAGE__->many_to_many(
    registered_events => 'event_registrations',
    'player',
);

1. DBIC_TRACE=1
2. DBIC_TRACE_PROFILE=console

• Socket.IO
• jQuery

var socket = io.connect();

socket.on('roll call requested', function(){
    $('.panel').hide();
    $('#waiting_panel').show();
    $('#round_number').text('Roll Call');
    $('#question_level').text('Press Ready');
});

socket.on('user list updated', user_list_updated);
socket.on('round started', round_started);

socket.on('reconnecting', function(){
    $.growl('Whoops, trying to reconnect...');
});

• PocketIO
• Plack::Builder

use QuizBowl::SocketIO;
use PocketIO;
use Plack::Builder;

builder {    # ...
    mount '/socket.io' => builder {
        PocketIO->new(
            instance => QuizBowl::SocketIO->new(),
            method => 'run'
        );
    };
};

package QuizBowl::SocketIO;

sub run {
    my $self = shift;
    return sub {
        my $self = shift;
        $self->on( 'submit answer' => \&submit_answer );
    };
}

sub submit_answer {
    my $self = shift;
    my $answer = shift;
}

// in JavaScript:
$('#submit_button').click(function(){
    QuizBowl.socket.emit('submit answer', $('#answer').val());
    return false;
});

• Host events simultaneously

# Join a room
$self->join($event_id);

# Send to everyone in room
$self->sockets->in($event_id)->emit(
    'answer submitted',
    {
        user_id           => $user_id,
        event_question_id => $eq->id,
    }
);

# Send to everyone in room _except_ me
$self->broadcast->to($event_id)->emit(
    'growl',
    sprintf( 'Round will close in %i seconds', $seconds )
);