Modern Catalyst

modern Catalyst Hideo Kimura

about me

about me • hide-k

about me • hide-k • hideki

about me • hide-k • hideki • hide

about me • hide-k • hideki • hide • DeNA

about me • hide-k • hideki • hide • DeNA • MobaSif

Catalyst

Agenda

Agenda • How to extend modern Catalyst on your applications

Agenda • How to extend modern Catalyst on your applications • Not Catalyst introducing

Agenda • How to extend modern Catalyst on your applications • Not Catalyst introducing • Not plugin recomendation

Agenda • How to extend modern Catalyst on your applications • Not Catalyst introducing • Not plugin recomendation • Not tips

Agenda • How to extend modern Catalyst on your applications • Not Catalyst introducing • Not plugin recomendation • Not tips • No

Catalyst 5.8

Catalyst 5.8 • 13 Oct 2008

Catalyst 5.8 • 13 Oct 2008 • Deprecation

Catalyst 5.8 • 13 Oct 2008 • Deprecation • Catamoose

Deprecation

Deprecation • ::[M V C]:: style

Deprecation • ::[M V C]:: style • NEXT

Deprecation • ::[M V C]:: style • NEXT • use MRO::Compat

Deprecation • ::[M V C]:: style • NEXT • use MRO::Compat • __PACKAGE__->mk_accessors()

Deprecation • ::[M V C]:: style • NEXT • use MRO::Compat • __PACKAGE__->mk_accessors() • use Moose attribute ‘has’

Deprecation • ::[M V C]:: style • NEXT • use MRO::Compat • __PACKAGE__->mk_accessors() • use Moose attribute ‘has’ • and more...

Moose • A postmodern object system for Perl5

Moose • A postmodern object system for Perl5 • Meta Object Protocol sugar syntax

Moose • A postmodern object system for Perl5 • Meta Object Protocol sugar syntax • attributes

Moose • A postmodern object system for Perl5 • Meta Object Protocol sugar syntax • attributes • method modiﬁers

Moose • A postmodern object system for Perl5 • Meta Object Protocol sugar syntax • attributes • method modiﬁers • roles

Application package MyApp; use strict; use warnings; use parent qw/Catalyst/; use Catalyst qw/ -Debug ConfigLoader Static::Simple/; __PACKAGE__->config( name => 'MyApp' ); __PACKAGE__->setup(); 1;

Moose-iﬁed Applicatoion package MyApp; use Moose; extends 'Catalyst'; __PACKAGE__->config(name => 'MyApp'); __PACKAGE__->setup( qw/ -Debug ConfigLoader Static::Simple/ ); 1;

Extend Application

Extend Application • Plugin?

Extend Application • Plugin? • Application namespace

Extend Application • Plugin? • Application namespace • Helper Method

Extend Application • Plugin? • Application namespace • Helper Method • Role

Extend Application • Plugin? • Application namespace • Helper Method • Role • base Controller

Extend Applicatoion package MyApp; ... after finalize => sub { my $c = shift; $c->log->(‘finalize’); }; sub foo { my $c = shift; $c->log->debug(‘foo’); } 1;

Extend Applicatoion package MyApp::Role::Foo; use Moose::Role; after finalize => sub { my $c = shift; $c->log->(‘finalize’); }; sub foo { my $c = shift; $c->log->debug(‘foo’); } 1;

Extend Applicatoion package MyApp; ... __PACKAGE__->setup( qw/ -Debug ConfigLoader Static::Simple +MyApp::Role::Foo/ ); 1;

Controller package MyApp::Contorller::Foo; use strict; use warnings; use parent ‘Catalyst::Controller’; sub foo : Path('foo') { my ($self, $c) = @_; $c->res->body('foo'); } 1;

Moose-iﬁed Controller package MyApp::Contorller::Foo; use Moose; BEGIN {extends ‘Catalyst::Controller}; sub foo : Path('foo') { my ($self, $c) = @_; $c->res->body('foo'); } 1;

Extend Controller

Extend Controller • Moose::Role

Extend Controller • Moose::Role • MooseX::MethodAttributes

Extend Controller • Moose::Role • MooseX::MethodAttributes • ActionClass

Extend Controller • Moose::Role • MooseX::MethodAttributes • ActionClass • ActionRole

Extend Controller package MyApp::Role; use Moose::Role -traits => 'MethodAttributes'; sub foo : Path('foo') { my ($self, $c) = @_; $c->log->debug('foo'); } 1;

Extend Controller package MyApp::Controller::Foo; use Moose; BEGIN {extends ‘Catalyst::Controller’} with MyApp::Role; 1;

ActionClass package MyApp::Action::Foo; use Moose; extends 'Catalyst::Action'; after execute => sub { my ($self, $controller, $c) = @_; $c->log->debug(‘foo’); }; 1;

ActionClass ... sub foo : Path('foo') ActionClass('+MyApp::Action::Foo') { my ($self, $c) = @_; $c->res->body('foo'); } ...

ActionClass ... sub _parse_Foo_attr { return ActionClass => ‘MyApp::Action::Foo’; } sub foo : Path('foo') Foo { ...

ActionClass

ActionClass • Pros

ActionClass • Pros • Reusable

Action Class

Action Class sub foobar : Path(‘foobar’) ActionClass(‘Foo’) ActionClass(‘Bar’) {

Action Class • Cons sub foobar : Path(‘foobar’) ActionClass(‘Foo’) ActionClass(‘Bar’) {

Action Class • Cons sub foobar : Path(‘foobar’) ActionClass(‘Foo’) ActionClass(‘Bar’) { • NG

Action Class • Cons sub foobar : Path(‘foobar’) ActionClass(‘Foo’) ActionClass(‘Bar’) { • NG • Sucks

ActionRole

ActionRole • Catalyst::Controller::ActionRole

ActionRole • Catalyst::Controller::ActionRole • Moose::Role as Action

ActionRole package MyApp::ActionRole::Foo; use Moose::Role; after execute => sub { my ($self, $controller, $c) = @_; $c->log->debug(‘foo’); }; 1;

ActionRole package MyApp::Contorller::Foo; use Moose; BEGIN {extends ‘Catalyst::Controller::ActionRole’}; sub foo : Path('foo') Does('Foo') { my ($self, $c) = @_; $c->res->body('foo'); } ...

ActionRole

ActionRole sub foobar : Path(‘foobar’) Does(‘Foo’) Does(‘Bar’) {

ActionRole • Pros sub foobar : Path(‘foobar’) Does(‘Foo’) Does(‘Bar’) {

ActionRole • Pros sub foobar : Path(‘foobar’) Does(‘Foo’) Does(‘Bar’) { • OK

Dispatcher • Path • Local • Global • Regex • LocalRegex

Dispatcher • begin :Private • end :Private • auto :Private

Dispatcher

Dispatcher • default :Private

Dispatcher • default :Private • default :Path

Dispatcher • default :Private • default :Path • catchall :Path

Dispatcher • default :Private • default :Path • catchall :Path • index :Private

Dispatcher • default :Private • default :Path • catchall :Path • index :Private • index :Path :Args(0)

Dispatcher • default :Private • default :Path • catchall :Path • index :Private • index :Path :Args(0) • home :Path :Args(0)

Dispatcher

Dispatcher • Chained

Dispatcher • Chained • dispatch chains of actions

Dispatcher package MyApp::Controller::Foo; use Moose; BEGIN {extends 'Catalyst::Controller'} sub root :Chained('/') PathPart('foo') CaptureArgs {} sub bar :Chained('root') PathPart Args(0) { #/foo/bar } sub baz :Chained('root') PathPart Args(1) { #/foo/baz/* } 1;

Dispatcher • $c->forward • $c->detach • $c->go • $c->visit

Model • Thin Contoroller, Smart Model

Model • Thin Contoroller, Smart Model • Do not depend on Catalyst

Model • Thin Contoroller, Smart Model • Do not depend on Catalyst • Model::Adaptor

Model::Adaptor package MyApp::Model::Foo; use Moose; extends 'Catalyst::Model::Adaptor'; __PACKAGE__->config( class => 'MyApp::Foo' ); 1;

Test • Catalyst::Test • Test::WWW::Mechanize::Catalyst

Catalyst::Test use strict; use warnings; use Test::More; use HTTP::Request::Common; BEGIN { use_ok 'Catalyst::Test', 'MyApp' } my $req = GET('/'); my $res = request($req); #$res = get(‘/’) ok($res->is_success, 'index return ok'); is($res->content_type, 'text/html', 'content type is HTML'); like($res->content, qr/Home/, 'contains Home'); done_testing();

Catalyst::Test ... my ($res, $c) = ctx_request('/'); ok($res->is_success, 'index return ok'); is($c->stash->{foo}, 'foo', 'statsh foo is foo'); ...

Test::WWW::Mechanize::Catalyst use Test::WWW::Mechanize::Catalyst; my $mech = Test::WWW::Mecanize::Catalyst->new( catalyst_app => ‘MyApp’ ); $mech->get(‘/’); $mech->content_contains(‘Home’, ‘contains Home’); $mech->submit_form( form_number => 1, fields => { foo => ‘foo’, bar => ‘bar’ } ); $mech->content_contains(‘Foo’, ‘contains Foo’); ...

Resources • Catalyst::Delta • Catalyst::Upgrading • Catalyst::Manual::ExtendingCatalyst • Catalyst::Manual::CatalystAndMoose • Catalyst::Manual::Cookbook • Perl • http://gihyo.jp/dev/serial/01/modern-perl • The Deﬁnitive Guide to Catalyst

One more thing...

PSGI • Perl Server Gateway Interface • just speciﬁcation, not implementation • start developing at 2009/09/04 • talk in this morning • miyaga-san, tokuhirom-san

Catalyst::Engine::PSGI MyApp Catalyst::Engine::PSGI Catalyst::Engine::* ::Impl::Coro ::Impl::Mojo

Thank you

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Modern Catalyst

by Hideo Kimura

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