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mojoliciousreal-time web framework
NPW2012, Stockholm Lars Thegler
meta
I’m not a mojolicious expert
I will talk about how to start
I will talk about what to expect
I will hint at how to continue
agenda
Mojolicious::Lite
routes and placeholders
templates and layouts
graduating from ::Lite to Mojolicious proper
Mojo as client
mojolicious - what? who?
“real-time web application framework”
written by Sebastian Riedel (sri) &c
who also wrote Catalyst
current core: ams, tempire, mramberg
timeline
first release 0.2 2008-09-24
release 1.0 ‘snowflake’ 2010-12-26
release 2.0 ‘leaf fluttering in the wind’ 2011-10-17
release 3.0 ‘rainbow’ 2012-06-25
release 3.46 2012-10-11
installation
no dependencies
# cpanm Mojolicious
easy curl recipe
# curl get.mojolicio.us | sh
execution
builtin (simple, morbo, hypnotoad)
nginx
apache/mod_proxy, CGI
PSGI/plack
anatomy of aweb framework
incoming request =>
dispatcher =>
action code =>
outgoing response
dispatcher
small language
matching incoming request => action code
“routes”
getting started
# GET /
get '/' => sub {
my $self = shift;
$self->render(text => 'Hello');
};
# 200 OK, text/html, Hello
placeholder
# /hello/Lars
get '/hello/:name' => sub {
my $self = shift;
my $name = $self->param(‘name’);
$self->render(text => “Hello $name”);
};
# 200 OK, text/html, Hello Lars
url parameters# /hello/Lars?greet=Hej
get '/hello/:name' => sub {
my $self = shift;
my $name = $self->param(‘name’);
my $greet = $self->param(‘greet’);
$self->render(text => “$greet $name”);
} => ‘greeting’;
# 200 OK, text/html, Hej Lars
placeholders and routes, next level
slurpy placeholders
wildcard placeholders
formats (‘.html’, ‘.txt’)
bridging routes
conditional routes
stash
nonpresistent data store
keep data for the duration of the request
carries data from action code to template
with a bunch of reserved keys
format, text, template, ...
$self->stash(name => ‘Lars’);
template
builtin ‘Embedded Perl’
variables in templates from stash
instantiated as normal values
Hello, <%= $name %>
structures in templates
It’s all Perl, so Perl control structures just work:
% for my $i (0..3) { ... <%= $i %> ...% }
inline templates
__DATA__
@@ hello.html.epHello, World!
@@ goodbye.html.epGoodbye, and thanks!
template selection
explicit template name in render() call
$self->render(template => ‘hello’);
name in stash
$self->stash(template => ‘hello’);
defaults to name of router
get ‘/welcome’ => ‘hello’;
auto render
no need to call render() yourself
if you don’t, mojo will do it for you
get ‘/’ => ‘index’;
__DATA__@@ index.html.ep
layouts
__DATA__@@ index.html.ep% layout ‘default’Hello, World!
@@ layouts/default.html.ep<html> <head><title>moo</title></head> <body><%= $content %></body></html>
templates, next level
includes
partial templates
404, 500 pages
blocks
template inheritance
...
sessions
built in
data stored in cookies, client-side
cookie signed to prevent tampering
you can use something else, if you want
growing out of ::Lite
inflate inline templates into proper files
move routes into application class
move action code into controller class
testing with Test::Mojo
but wait, there’s more!
Mojo::UserAgent
nice web client
Mojo::DOM
excellent HTML/XML parser
ojo
for one-liners
resources
http://mojolicio.us
Mojolicious::Guides::{Routing,Rendering,Growing,...}
http://mojocasts.com by tempire
https://github.com/kraih/mojo
incl wiki
thank you :)
tagg @ irc
taggg @ twitter
lars@thegler.dk
LTHEGLER@cpan.org
lth@FreeBSD.org
lars.thegler@teliasonera.com
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