NAME
Mojolicious - The Web In A Box!
SYNOPSIS
# Mojolicious application
package MyApp;
use Mojo::Base 'Mojolicious';
sub startup {
my $self = shift;
# Routes
my $r = $self->routes;
# Default route
$r->route('/:controller/:action/:id')->to('foo#welcome');
}
# Mojolicious controller
package MyApp::Foo;
use Mojo::Base 'Mojolicious::Controller';
# Say hello
sub welcome {
my $self = shift;
$self->render_text('Hi there!');
}
# Say goodbye from a template (foo/bye.html.ep)
sub bye { shift->render }
DESCRIPTION
Back in the early days of the web, many people learned Perl because of a wonderful Perl library called CGI. It was simple enough to get started without knowing much about the language and powerful enough to keep you going, learning by doing was much fun. While most of the techniques used are outdated now, the idea behind it is not. Mojolicious is a new attempt at implementing this idea using state of the art technology.
Features
An amazing MVC web framework supporting a simplified single file mode through Mojolicious::Lite.
Powerful out of the box with RESTful routes, plugins, Perl-ish templates, session management, signed cookies, testing framework, static file server, I18N, first class unicode support and much more for you to discover.
Very clean, portable and Object Oriented pure Perl API without any hidden magic and no requirements besides Perl 5.8.7 (although 5.12+ is recommended).
Full stack HTTP 1.1 and WebSocket client/server implementation with IPv6, TLS, Bonjour, IDNA, Comet (long polling), chunking and multipart support.
Built-in async IO web server supporting libev and hot deployment, perfect for embedding.
Automatic CGI, FastCGI and PSGI detection.
JSON and HTML5/XML parser with CSS3 selector support.
Fresh code based upon years of experience developing Catalyst.
Installation
All you need is a oneliner, it takes less than a minute.
sudo sh -c "curl -L cpanmin.us | perl - Mojolicious"
Getting Started
These three lines are a whole web application.
use Mojolicious::Lite;
get '/' => {text => 'Hello World!'};
app->start;
To run this example with the built-in development web server just put the code into a file and execute it with perl
.
% perl hello.pl daemon
Server available at http://127.0.0.1:3000.
% curl http://127.0.0.1:3000/
Hello World!
Duct Tape For The HTML5 Web
Web development for humans, making hard things possible and everything fun.
use Mojolicious::Lite;
# Simple plain text response
get '/' => sub {
my $self = shift;
$self->render_text('Hello World!');
};
# Route associating the "/time" URL to template in DATA section
get '/time' => 'clock';
# RESTful web service sending JSON responses
get '/list/:offset' => sub {
my $self = shift;
$self->render_json({list => [0 .. $self->param('offset')]});
};
# Scrape and return information from remote sites
post '/title' => sub {
my $self = shift;
my $url = $self->param('url') || 'http://mojolicio.us';
$self->render_text(
$self->ua->get($url)->res->dom->html->head->title->text);
};
# WebSocket echo service
websocket '/echo' => sub {
my $self = shift;
$self->on_message(sub {
my ($self, $message) = @_;
$self->send_message("echo: $message");
});
};
app->start;
__DATA__
@@ clock.html.ep
% use Time::Piece;
% my $now = localtime;
<%= link_to clock => begin %>
The time is <%= $now->hms %>.
<% end %>
Growing
Single file prototypes can easily grow into well-structured applications. A controller collects several actions together.
package MyApp::Example;
use Mojo::Base 'Mojolicious::Controller';
# Plain text response
sub hello {
my $self = shift;
$self->render_text('Hello World!');
}
# Render external template "templates/example/clock.html.ep"
sub clock { }
# RESTful web service sending JSON responses
sub restful {
my $self = shift;
$self->render_json({list => [0 .. $self->param('offset')]});
}
# Scrape and return information from remote sites
sub title {
my $self = shift;
my $url = $self->param('url') || 'http://mojolicio.us';
$self->render_text(
$self->ua->get($url)->res->dom->html->head->title->text);
}
1;
While the application class is unique, you can have as many controllers as you like.
package MyApp::Realtime;
use Mojo::Base 'Mojolicious::Controller';
# WebSocket echo service
sub echo {
my $self = shift;
$self->on_message(sub {
my ($self, $message) = @_;
$self->send_message("echo: $message");
});
}
1;
Larger applications benefit from the separation of actions and routes, especially when working in a team.
package MyApp;
use Mojo::Base 'Mojolicious';
# Runs once on application startup
sub startup {
my $self = shift;
my $r = $self->routes;
# Create a route at "/example" for the "MyApp::Example" controller
my $example = $r->route('/example')->to('example#');
# Connect these HTTP GET routes to actions in the controller
# (paths are relative to the controller)
$example->get('/')->to('#hello');
$example->get('/time')->to('#clock');
$example->get('/list/:offset')->to('#restful');
# All common HTTP verbs are supported
$example->post('/title')->to('#title');
# ...and much, much more
# (including multiple, auto-discovered controllers)
$r->websocket('/echo')->to('realtime#echo');
}
1;
Through all of these changes, your action code and templates can stay almost exactly the same.
% use Time::Piece;
% my $now = localtime;
<%= link_to clock => begin %>
The time is <%= $now->hms %>.
<% end %>
Mojolicious has been designed from the ground up for a fun and unique workflow.
Want To Know More?
Take a look at our excellent documentation in Mojolicious::Guides!
ARCHITECTURE
Loosely coupled building blocks, use what you like and just ignore the rest.
.---------------------------------------------------------------.
| |
| .----------------------------------------------'
| | .--------------------------------------------.
| Application | | Mojolicious::Lite |
| | '--------------------------------------------'
| | .--------------------------------------------.
| | | Mojolicious |
'----------------' '--------------------------------------------'
.---------------------------------------------------------------.
| Mojo |
'---------------------------------------------------------------'
.-------. .-----------. .--------. .------------. .-------------.
| CGI | | FastCGI | | PSGI | | HTTP 1.1 | | WebSocket |
'-------' '-----------' '--------' '------------' '-------------'
ATTRIBUTES
Mojolicious inherits all attributes from Mojo and implements the following new ones.
controller_class
my $class = $app->controller_class;
$app = $app->controller_class('Mojolicious::Controller');
Class to be used for the default controller, defaults to Mojolicious::Controller.
mode
my $mode = $app->mode;
$app = $app->mode('production');
The operating mode for your application. It defaults to the value of the environment variable MOJO_MODE
or development
. Mojo will name the log file after the current mode and modes other than development
will result in limited log output.
If you want to add per mode logic to your application, you can add a sub to your application named $mode_mode
.
sub development_mode {
my $self = shift;
}
sub production_mode {
my $self = shift;
}
on_process
my $process = $app->on_process;
$app = $app->on_process(sub {...});
Request processing callback, defaults to calling the dispatch
method. Generally you will use a plugin or controller instead of this, consider it the sledgehammer in your toolbox.
$app->on_process(sub {
my ($self, $c) = @_;
$self->dispatch($c);
});
plugins
my $plugins = $app->plugins;
$app = $app->plugins(Mojolicious::Plugins->new);
The plugin loader, by default a Mojolicious::Plugins object. You can usually leave this alone, see Mojolicious::Plugin if you want to write a plugin.
renderer
my $renderer = $app->renderer;
$app = $app->renderer(Mojolicious::Renderer->new);
Used in your application to render content, by default a Mojolicious::Renderer object. The two main renderer plugins Mojolicious::Plugin::EpRenderer and Mojolicious::Plugin::EplRenderer contain more specific information.
routes
my $routes = $app->routes;
$app = $app->routes(Mojolicious::Routes->new);
The routes dispatcher, by default a Mojolicious::Routes object. You use this in your startup method to define the url endpoints for your application.
sub startup {
my $self = shift;
my $r = $self->routes;
$r->route('/:controller/:action')->to('test#welcome');
}
secret
my $secret = $app->secret;
$app = $app->secret('passw0rd');
A secret passphrase used for signed cookies and the like, defaults to the application name which is not very secure, so you should change it!!! As long as you are using the unsecure default there will be debug messages in the log file reminding you to change your passphrase.
sessions
my $sessions = $app->sessions;
$app = $app->sessions(Mojolicious::Sessions->new);
Simple signed cookie based sessions, by default a Mojolicious::Sessions object.
static
my $static = $app->static;
$app = $app->static(Mojolicious::Static->new);
For serving static assets from your public
directory, by default a Mojolicious::Static object.
types
my $types = $app->types;
$app = $app->types(Mojolicious::Types->new);
Responsible for tracking the types of content you want to serve in your application, by default a Mojolicious::Types object. You can easily register new types.
$app->types->type(twitter => 'text/tweet');
METHODS
Mojolicious inherits all methods from Mojo and implements the following new ones.
new
my $app = Mojolicious->new;
Construct a new Mojolicious application. Will automatically detect your home directory and set up logging based on your current operating mode. Also sets up the renderer, static dispatcher and a default set of plugins.
defaults
my $defaults = $app->defaults;
my $foo = $app->defaults('foo');
$app = $app->defaults({foo => 'bar'});
$app = $app->defaults(foo => 'bar');
Default values for the stash, assigned for every new request.
$app->defaults->{foo} = 'bar';
my $foo = $app->defaults->{foo};
delete $app->defaults->{foo};
dispatch
$app->dispatch($c);
The heart of every Mojolicious application, calls the static and routes dispatchers for every request and passes them a Mojolicious::Controller object.
handler
$tx = $app->handler($tx);
Sets up the default controller and calls process for every request.
helper
$app->helper(foo => sub {...});
Add a new helper that will be available as a method of the controller object and the application object, as well as a function in ep
templates.
# Helper
$app->helper(add => sub { $_[1] + $_[2] });
# Controller/Application
my $result = $self->add(2, 3);
# Template
<%= add 2, 3 %>
hook
$app->hook(after_dispatch => sub {...});
Extend Mojolicious by adding hooks to named events.
The following events are available and run in the listed order.
- after_build_tx
-
Triggered right after the transaction is built and before the HTTP request gets parsed, the callbacks of this hook run in the order they were added. One use case would be upload progress bars. (Passed the transaction and application instances)
$app->hook(after_build_tx => sub { my ($tx, $app) = @_; });
- before_dispatch
-
Triggered right before the static and routes dispatchers start their work, the callbacks of this hook run in the order they were added. Very useful for rewriting incoming requests and other preprocessing tasks. (Passed the default controller instance)
$app->hook(before_dispatch => sub { my $self = shift; });
- after_static_dispatch
-
Triggered after the static dispatcher determined if a static file should be served and before the routes dispatcher starts its work, the callbacks of this hook run in reverse order. Mostly used for custom dispatchers and postprocessing static file responses. (Passed the default controller instance)
$app->hook(after_static_dispatch => sub { my $self = shift; });
- before_render
-
Triggered right before the renderer turns the stash into a response, the callbacks of this hook run in the order they were added. Very useful for making adjustments to the stash right before rendering. (Passed the current controller instance and argument hash)
$app->hook(before_render => sub { my ($self, $args) = @_; });
Note that this hook is EXPERIMENTAL and might change without warning!
- after_dispatch
-
Triggered after a response has been rendered, the callbacks of this hook run in reverse order. Note that this hook can trigger before
after_static_dispatch
due to its dynamic nature. Useful for all kinds of postprocessing tasks. (Passed the current controller instance)$app->hook(after_dispatch => sub { my $self = shift; });
plugin
$app->plugin('something');
$app->plugin('something', foo => 23);
$app->plugin('something', {foo => 23});
$app->plugin('Foo::Bar');
$app->plugin('Foo::Bar', foo => 23);
$app->plugin('Foo::Bar', {foo => 23});
Load a plugin.
The following plugins are included in the Mojolicious distribution as examples.
- Mojolicious::Plugin::CallbackCondition
-
Very versatile route condition for arbitrary callbacks.
- Mojolicious::Plugin::Charset
-
Change the application charset.
- Mojolicious::Plugin::Config
-
Perl-ish configuration files.
- Mojolicious::Plugin::DefaultHelpers
-
General purpose helper collection.
- Mojolicious::Plugin::EplRenderer
-
Renderer for plain embedded Perl templates.
- Mojolicious::Plugin::EpRenderer
-
Renderer for more sophisiticated embedded Perl templates.
- Mojolicious::Plugin::HeaderCondition
-
Route condition for all kinds of headers.
- Mojolicious::Plugin::I18n
-
Internationalization helpers.
- Mojolicious::Plugin::JsonConfig
-
JSON configuration files.
- Mojolicious::Plugin::Mount
-
Mount whole Mojolicious applications.
- Mojolicious::Plugin::PodRenderer
-
Renderer for POD files and documentation browser.
- Mojolicious::Plugin::PoweredBy
-
Add an
X-Powered-By
header to outgoing responses. - Mojolicious::Plugin::RequestTimer
-
Log timing information.
- Mojolicious::Plugin::TagHelpers
-
Template specific helper collection.
start
Mojolicious->start;
Mojolicious->start('daemon');
Start the Mojolicious::Commands command line interface for your application.
startup
$app->startup;
This is your main hook into the application, it will be called at application startup.
sub startup {
my $self = shift;
}
HELPERS
In addition to the attributes and methods above you can also call helpers on instances of Mojolicious. This includes all helpers from Mojolicious::Plugin::DefaultHelpers and Mojolicious::Plugin::TagHelpers.
$app->log->debug($app->dumper({foo => 'bar'}));
SUPPORT
Web
http://mojolicio.us
IRC
#mojo on irc.perl.org
Mailing-List
http://groups.google.com/group/mojolicious
DEVELOPMENT
Repository
http://github.com/kraih/mojo
BUNDLED FILES
Mojolicious ships with a few popular static files bundled in the public
directory.
Mojolicious Artwork
Copyright (C) 2010-2011, Sebastian Riedel.
Licensed under the CC-SA License, Version 3.0 http://creativecommons.org/licenses/by-sa/3.0.
jQuery
Version 1.6.2
jQuery is a fast and concise JavaScript Library that simplifies HTML document traversing, event handling, animating, and Ajax interactions for rapid web development. jQuery is designed to change the way that you write JavaScript.
Copyright 2011, John Resig.
Licensed under the MIT License, http://creativecommons.org/licenses/MIT.
prettify.js
Version 1-Jun-2011
A Javascript module and CSS file that allows syntax highlighting of source code snippets in an html page.
Copyright (C) 2006, Google Inc.
Licensed under the Apache License, Version 2.0 http://www.apache.org/licenses/LICENSE-2.0.
CODE NAMES
Every major release of Mojolicious has a code name, these are the ones that have been used in the past.
1.4, Smiling Face With Sunglasses
(u1F60E)
1.3, Tropical Drink
(u1F379)
1.1, Smiling Cat Face With Heart-Shaped Eyes
(u1F63B)
1.0, Snowflake
(u2744)
0.999930, Hot Beverage
(u2615)
0.999927, Comet
(u2604)
0.999920, Snowman
(u2603)
AUTHOR
Sebastian Riedel, sri@cpan.org
.
CORE DEVELOPERS EMERITUS
Retired members of the core team, we thank you dearly for your service.
Viacheslav Tykhanovskyi, vti@cpan.org
.
CREDITS
In alphabetical order.
Abhijit Menon-Sen
Adam Kennedy
Adriano Ferreira
Al Newkirk
Alex Salimon
Alexey Likhatskiy
Anatoly Sharifulin
Andre Vieth
Andrew Fresh
Andreas Koenig
Andy Grundman
Aristotle Pagaltzis
Ashley Dev
Ask Bjoern Hansen
Audrey Tang
Ben van Staveren
Breno G. de Oliveira
Brian Duggan
Burak Gursoy
Ch Lamprecht
Charlie Brady
Chas. J. Owens IV
Christian Hansen
chromatic
Curt Tilmes
Daniel Kimsey
Danijel Tasov
David Davis
Dmitriy Shalashov
Dmitry Konstantinov
Eugene Toropov
Gisle Aas
Glen Hinkle
Graham Barr
Henry Tang
Hideki Yamamura
James Duncan
Jan Jona Javorsek
Jaroslav Muhin
Jesse Vincent
John Kingsley
Jonathan Yu
Kazuhiro Shibuya
Kevin Old
KITAMURA Akatsuki
Lars Balker Rasmussen
Leon Brocard
Magnus Holm
Maik Fischer
Marcus Ramberg
Mark Stosberg
Matthew Lineen
Maksym Komar
Maxim Vuets
Michael Harris
Mirko Westermeier
Mons Anderson
Moritz Lenz
Nils Diewald
Oleg Zhelo
Pascal Gaudette
Paul Tomlin
Pedro Melo
Peter Edwards
Pierre-Yves Ritschard
Quentin Carbonneaux
Rafal Pocztarski
Randal Schwartz
Robert Hicks
Robin Lee
Roland Lammel
Ryan Jendoubi
Sascha Kiefer
Sergey Zasenko
Simon Bertrang
Simone Tampieri
Shu Cho
Stanis Trendelenburg
Tatsuhiko Miyagawa
Terrence Brannon
The Perl Foundation
Tomas Znamenacek
Ulrich Habel
Ulrich Kautz
Uwe Voelker
Victor Engmark
Yaroslav Korshak
Yuki Kimoto
Zak B. Elep
COPYRIGHT AND LICENSE
Copyright (C) 2008-2011, Sebastian Riedel.
This program is free software, you can redistribute it and/or modify it under the terms of the Artistic License version 2.0.