Mojolicious

Mojolicious -
Web development
rethought
Marcus Ramberg

Nordaaker

Sebastian Riedel

• twitter.com/kraih

Sebastian Riedel


• Creator of Catalyst

Sebastian Riedel



• Went over to the dark side
(*cough*RoR*cough*)

Sebastian Riedel



• Went over to the dark side
(*cough*RoR*cough*)
• This is what he brought back

Installation

• cpan Mojolicious

Installation


• There is no step 2

Installation



• No dependencies beyond Perl
5.8.1+

Installation



• No dependencies beyond Perl
5.8.1+
• Could also easily be bundled
with your app.

With an unconﬁgured Perl

★ $ curl -L cpanmin.us | perl - Mojolicious
Fetching http://search.cpan.org/CPAN/
authors/id/K/KR/KRAIH/
Mojolicious-0.999922.tar.gz ... OK
Conﬁguring Mojolicious-0.999922 ... OK
Building and testing Mojolicious-0.999922
for Mojolicious ... OK
Successfully installed Mojolicious-0.999922

With an unconﬁgured Perl

★ $ curl -L cpanmin.us | perl - Mojolicious
Fetching http://search.cpan.org/CPAN/
authors/id/K/KR/KRAIH/
Mojolicious-0.999922.tar.gz ... OK
Conﬁguring Mojolicious-0.999922 ... OK
Building and testing Mojolicious-0.999922
for Mojolicious ... OK
Successfully installed Mojolicious-0.999922
★ Gratuitous App::cpanminus plug :)

$ mojolicious generate lite_app

[exist] /Users/marcus
[write] /Users/marcus/foosball
[chmod] foosball 744

That was easy. Now let’s check out the contents of
the ﬁle

Lite app

#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => 'index';
get '/:groovy' => sub {
my $self = shift;
$self->render_text(
$self->param('groovy'));
};
shagadelic;

Lite app (enterprise edition)

#!/usr/bin/env perl
use Mojolicious::Lite;
get '/' => 'index';
get '/:synergy' => sub {
my $self = shift;
$self->render_text(
$self->param('synergy'));
};
app->start;

View

__DATA__
@@ index.html.ep
% layout 'funky';
Yea baby!

@@ layouts/funky.html.ep
<!doctype html><html>
<head><title>Funky!</title></head>
<body><%== content %></body>
</html>

Let’s fire her up:
$ ./foosball

usage: foosball COMMAND [OPTIONS]

These commands are currently available:

generate Generate files and directories from templates.

routes Show available routes.

cgi Start application with CGI backend.

daemon Start application with HTTP 1.1 backend.

daemon_prefork Start application with preforking HTTP 1.1 backend.

fastcgi Start application with FastCGI backend.

get Get file from URL.

psgi Start application with PSGI backend.

test Run unit tests.

version Show versions of installed modules.

See 'foosball help COMMAND' for more information on a specific command.

$ ./foosball daemon

Server available at http://Command-Central.local:3000.

Handles 3 different urls

•/

• /*

• /*/*

Features

★ A powerful routes based dispatcher

Features

★ Full HTTP 1/1 implementation (Client/
Server)

Features

Server)
★ Simple Template System

Features

Server)
★ JSON support built-in

Features

Server)
★ Elegant plugin system

Features

Server)
★ Class reloader

Features

Server)
★ Class reloader
★ And a lot more

Routes - snakes and ladders

# ::Lite
get ‘/’ => ‘index’;
# sub refs for functions
post ‘/login’ => sub { .. };
# Placeholders & Actions:
get ‘/:foo’ => sub {},‘ctrl’
# All together
get '/everything/:stuff' => [stuff => qr/d+/] =>
{stuff => 23} =>
sub { shift->render('welcome'); }

Routes - snakes and ladders

ladder sub {
my $self = shift
# Authenticated
my $name = $self->param('name') || '';
return 1 if $name eq 'Bender';

# Not authenticated
$self->render('denied');
return;
}

More routes

$r->route(‘/’)->to
(controller=>‘foo’,action=> ‘bar’);
('lists#new', id => 1)->name('new');
('/:controller/:action/:id')->to
('example#welcome', id => 1)

# Bridges
my $auth=$r->bridge->to(‘auth#check’);
$auth->route(...)

HTTP 1.1 stack

• HTTP Stack implemented
based on RFCs
• Full HTTP implementation,
including pipelining
• Does not use LWP, No request
body in memory.

Classes

Mojo::Base
Mojo::ByteStream
Mojo::Template, Mojo::JSON
Mojo::Loader,Mojo::Log,Mojo::Path
Mojo::URL,Mojo::Parameters
Mojo::Content
Mojo::Message::Request
Mojo::Message::Response
Mojo::Headers,Mojo::Cookie, Mojo::Date

Base Classes

Mojo::Base
Mojo::ByteStream
Mojo::Template, Mojo::JSON
Mojo::Loader,Mojo::Log,Mojo::Path
Mojo::URL,Mojo::Parameters
Mojo::Content
Mojo::Message::Request
Mojo::Message::Response
Mojo::Headers,Mojo::Cookie, Mojo::Date

Mojo::Template

% my $player=$self->stash(‘players’);
%= $player; # print
%== $player; # raw
<%= player %> # inline style
% # Normal comment
<% # inline comment %>

.ep - prepopulates stash for you
.epl - same templates, less magic

JSON support

use Mojo::JSON;

my $json=Mojo::JSON->new;
my $str=$json->encode({foo => ‘bar’});
my $strct=$json->decode
(‘[“foo”,”bar”’]);

More Classes

Mojo::Transaction, Mojo::Stateful
Mojo::IOLoop
Mojo::Client, Mojo::Server
Mojo::Server::CGI
Mojo::Server::FastCGI
Mojo::Server::PSGI
Mojo::Server::Daemon, ::Prefork
Mojo::Command::*

HTTP Client

my $client=Mojo::Client->new;

$client->get(
‘http://iusethis.com/new.rss’ => sub {
my ($self,$tx)=@_;
say $tx->res;
})->process;
#inside mojolicious
$self->client->post(...);
# also works with the ioloop.

Mojolicious classes

Mojolicious
Mojolicios::Lite
Mojolicious::Command::*
Mojolicious::Plugins
Mojolicious::Plugin::*
Mojolicious::Controller

Plugin system

★ Hook based
★ before_dispatch
★ after_dispatch
★ after_static_dispatch
★ after_build_tx
★ Also apropriate place to add types & renders
& custom routes extension.

Mojolicious default plugins
★ Mojolicious::Plugin::AgentCondition - Agent Condition
★ Mojolicious::Plugin::Charset - Default Charset
★ Mojolicious::Plugin::DefaultHelpers - Default Helpers
★ Mojolicious::Plugin::EpRenderer - EP Renderer
★ Mojolicious::Plugin::EplRenderer -EPL Renderer
★ Mojolicious::Plugin::HeaderCondition - Header Condition
★ Mojolicious::Plugin::I18n Internationalization Plugin
★ Mojolicious::Plugin::JsonConﬁg - JSON Conﬁguration
★ Mojolicious::Plugin::PodRenderer - POD Renderer
★ Mojolicious::Plugin::PoweredBy - Powered By Plugin
★ Mojolicious::Plugin::RequestTimer - Time requests

default helpers

★ dumper
★ param
★ stash
★ layout
★ include
★ content
★ extends
★ url_for

Mojolicious::Controller

->render
->render(template=>‘foo/bar’)
->render(controller=>‘foo’,action=>‘bar’)
->render(‘foo#bar’)
->render_text
->render_json
->render_inner
->render_partial
->pause / ->resume
->redirect_to / ->url_for

STOP THE PRESS!
WEBSOCKET!
HTML5 protocol for long running processes
Mojo ﬁrst Perl framework to add support
perl -MMojolicious::Lite -e "websocket '/' => sub
{shift->receive_message(sub { shift-
>send_message(shift)})}; shagadelic 'daemon'"

Get the source

• http://github.com/kraih/
mojo
• Pull requests welcome

• Just fork and play

Questions?

• Thanks for listening

Questions?

• Thanks for listening

• marcus@nordaaker.com

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