Hacking Movable Type

Hacking Movable Type Italian Perl Workshop 2006 Stefano Rodighiero - stefano.rodighiero@dada.net

“Movable Type 3.2 is the premier weblog publishing platform for businesses, organizations, developers, and web designers”

Le funzioni di MT MT ________ ________ Articoli, ________ template

Le funzioni di MT <MTEntries> <$MTEntryTrackbackData$> ... <a id=\"a<$MTEntryID pad=\"1\"$>\"></a> <div class=\"entry\" id=\"entry-<$MTEntryID$>\"> <h3 class=\"entry-header\"><$MTEntryTitle$></h3> <div class=\"entry-content\"> <div class=\"entry-body\"> <$MTEntryBody$> <MTEntryIfExtended> ... </div> </div> </div> </MTEntries>

Le caratteristiche di MT • Interfaccia web completa ma afﬁdabile • Sistema di gestione degli autori (con abbozzo di gestione di ruoli e permessi) • Sistema potente per la gestione dei template

Inoltre...

MT dal punto di vista del programmatore • Espone una API soﬁsticata e documentata • Incoraggia lo sviluppo di plug-in per estenderne le funzionalità • È scritto in Perl :-)

Estendere MT MT ________ ________ Articoli, ________ template Plugin

Esempi di realizzazioni

maketitle.pl my $plugin; require MT::Plugin; $plugin = MT::Plugin->new( { name => 'Maketitle', description => q{Costruisce titoli grafici}, doc_link => '', } ); MT->add_plugin($plugin);

maketitle.pl /2 # ... continua MT::Template::Context->add_tag( MakeGraphicTitle => \\&make_graphic_title );

maketitle.pl /2 nel template... ... <center> <$MTMakeGraphicTitle$> </center> ...

maketitle.pl /2 sub make_graphic_title { my $context = shift; my $params = shift; my $entry = $context->stash('entry'); my $title = $entry->title(); my $dirified_title = dirify( $title ); ... return qq{<img src=\"$imageurl\">}; }

maketitle.pl /2 nel ﬁle HTML risultante... ... <center> <img src=”...”> </center> ...

statwatch

statwatch schemas mysql.dump list.tmpl statwatch swfooter.tmpl tmpl swheader.tmpl view.tmpl

statwatch Stats.pm lib StatWatch Visit.pm statvisit.cgi StatWatch.pm statwatch statwatch.cgi StatWatchConﬁg.pm statwatch.pl

statwatch.pl ... MT::Template::Context->add_tag('Stats' => sub{&staturl}); sub staturl { my $ctx = shift; my $blog = $ctx->stash('blog'); my $cfg = MT::ConfigMgr->instance; my $script = '<script type=\"text/javascript\"> '.''.' </script>'; return $script; } 1;

Visit.pm # StatWatch - lib/StatWatch/Visit.pm # Nick O'Neill (http://www.raquo.net/statwatch/) package StatWatch::Visit; use strict; use MT::App; @StatWatch::Visit::ISA = qw( MT::App ); use Stats; my $VERSION = '1.2'; my $DEBUG = 0;

MT::ErrorHandler MT::Plugin MT MT::App MT::App::CMS MT::App::Comments MT::App::Search

Visit.pm /2 sub init { my $app = shift; $app->SUPER::init(@_) or return; $app->add_methods( visit => \\&visit, ); $app->{default_mode} = 'visit'; $app->{user_class} = 'MT::Author'; $app->{charset} = $app->{cfg}->PublishCharset; my $q = $app->{query}; $app; }

Visit.pm /2 sub visit { my $app = shift; my $q = $app->{query}; my $blog_id; if ($blog_id = $q->param('blog_id')) { require MT::Blog; my $blog = MT::Blog->load({ id => $blog_id }) or die \"Error loading blog from blog_id $blog_id\"; my $stats = Stats->new; # ...

Visit.pm /2 package Stats; use strict; use MT::Object; @Stats::ISA = qw( MT::Object ); __PACKAGE__->install_properties({ columns => [ 'id', 'blog_id', 'url', 'referrer', 'ip', ], indexes => { ip => 1, blog_id => 1, created_on => 1, }, audit => 1, datasource => 'stats', primary_key => 'id', }); 1;

MT::ErrorHandler MT::Object MT::ObjectDriver MT::ObjectDriver::DBI MT::ObjectDriver::DBM MT::Entry MT::Author MT::Config

Visit.pm /2 # ... $stats->ip($app->remote_ip); $stats->referrer($referrer); $stats->blog_id($blog_id); $stats->url($url); &compileStats($blog_id,$app->remote_ip); $stats->save or die \"Saving stats failed: \", $stats->errstr; } else { die \"No blog id\"; } }

Visit.pm /2 sub init { my $app = shift; $app->SUPER::init(@_) or return; $app->add_methods( list => \\&list, view => \\&view, ); $app->{default_mode} = 'list'; $app->{user_class} = 'MT::Author'; $app->{requires_login} = 1; $app->{charset} = $app->{cfg}->PublishCharset; my $q = $app->{query}; $app; }

Visit.pm /2 sub list { my $app = shift; my %param; my $q = $app->{query}; $param{debug} = ($DEBUG || $q->param('debug')); $param{setup} = $q->param('setup'); ( $param{script_url} , $param{statwatch_base_url} , $param{statwatch_url} , my $static_uri) = parse_cfg(); require MT::PluginData; unless (MT::PluginData->load({ plugin => 'statwatch', key => 'setup_'.$VERSION })) { &setup; $app->redirect($param{statwatch_url}.\"?setup=1\"); } require MT::Blog; my @blogs = MT::Blog->load; my $data = []; ...

Visit.pm /2 ... ### Listing the blogs on the main page ### for my $blog (@blogs) { if (Stats->count({ blog_id => $blog->id })) { # [... colleziona i dati da mostrare ...] # Row it my $row = { ... }; push @$data, $row; } } $param{blog_loop} = $data; $param{gen_time} = \" | \".$now.\" seconds\"; $param{version} = $VERSION; $app->build_page('tmpl/list.tmpl', \\%param); }

Riepilogo? • Inserire nuovi tag speciale all’interno dei template • Aggiungere pannelli (applicazioni) • ...

BigPAPI • Big Plugin API • Permette di agganciarsi all’interfaccia esistente di MT, estendendo le funzionalità dei pannelli esistenti

Perchè?

RightFields MT->add_callback( 'bigpapi::template::edit_entry::top', 9, $rightfields, \\&edit_entry_template ); MT->add_callback( 'bigpapi::param::edit_entry', 9, $rightfields, \\&edit_entry_param ); MT->add_callback( 'bigpapi::param::preview_entry', 9, $rightfields, \\&preview_entry_param);

RightFields

Approfondimenti • Six Apart Developer Wiki http://www.lifewiki.net/sixapart/ • Seedmagazine.com — Lookin’ Good http://o2b.net/archives/seedmagazine • Beyond the blog http://a.wholelottanothing.org/features/2003/07/beyond_the_blog • http://del.icio.us/slr/movabletype :-)

Grazie :) Stefano Rodighiero stefano.rodighiero@dada.net

Hacking Movable Type

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