use Moose::Meta::Class ();
extends 'Catalyst::Component';
use Moose::Util qw/find_meta/;
-use B::Hooks::EndOfScope ();
+use namespace::clean -except => 'meta';
use Catalyst::Exception;
use Catalyst::Exception::Detach;
use Catalyst::Exception::Go;
use URI ();
use URI::http;
use URI::https;
+use HTML::Entities;
use Tree::Simple qw/use_weak_refs/;
use Tree::Simple::Visitor::FindByUID;
use Class::C3::Adopt::NEXT;
use utf8;
use Carp qw/croak carp shortmess/;
use Try::Tiny;
+use Safe::Isa;
+use Moose::Util 'find_meta';
use Plack::Middleware::Conditional;
use Plack::Middleware::ReverseProxy;
use Plack::Middleware::IIS6ScriptNameFix;
+use Plack::Middleware::IIS7KeepAliveFix;
use Plack::Middleware::LighttpdScriptNameFix;
+use Plack::Util;
+use Class::Load 'load_class';
-BEGIN { require 5.008004; }
+BEGIN { require 5.008003; }
has stack => (is => 'ro', default => sub { [] });
has stash => (is => 'rw', default => sub { {} });
has stats => (is => 'rw');
has action => (is => 'rw');
has counter => (is => 'rw', default => sub { {} });
-has request => (is => 'rw', default => sub { $_[0]->request_class->new({}) }, required => 1, lazy => 1);
-has response => (is => 'rw', default => sub { $_[0]->response_class->new({}) }, required => 1, lazy => 1);
+has request => (
+ is => 'rw',
+ default => sub {
+ my $self = shift;
+ $self->request_class->new($self->_build_request_constructor_args);
+ },
+ lazy => 1,
+);
+sub _build_request_constructor_args {
+ my $self = shift;
+ my %p = ( _log => $self->log );
+ $p{_uploadtmp} = $self->_uploadtmp if $self->_has_uploadtmp;
+ $p{data_handlers} = {$self->registered_data_handlers};
+ $p{_use_hash_multivalue} = $self->config->{use_hash_multivalue_in_request}
+ if $self->config->{use_hash_multivalue_in_request};
+ \%p;
+}
+
+has response => (
+ is => 'rw',
+ default => sub {
+ my $self = shift;
+ $self->response_class->new($self->_build_response_constructor_args);
+ },
+ lazy => 1,
+);
+sub _build_response_constructor_args {
+ my $self = shift;
+ { _log => $self->log };
+}
+
has namespace => (is => 'rw');
sub depth { scalar @{ shift->stack || [] }; }
__PACKAGE__->mk_classdata($_)
for qw/components arguments dispatcher engine log dispatcher_class
engine_loader context_class request_class response_class stats_class
- setup_finished _psgi_app loading_psgi_file run_options/;
+ setup_finished _psgi_app loading_psgi_file run_options _psgi_middleware
+ _data_handlers/;
__PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
__PACKAGE__->request_class('Catalyst::Request');
# Remember to update this in Catalyst::Runtime as well!
-our $VERSION = '5.90005';
+our $VERSION = '5.90051';
sub import {
my ( $class, @arguments ) = @_;
sub _application { $_[0] }
+=encoding UTF-8
+
=head1 NAME
Catalyst - The Elegant MVC Web Application Framework
If none of these are set, Catalyst will attempt to automatically detect the
home directory. If you are working in a development environment, Catalyst
-will try and find the directory containing either Makefile.PL, Build.PL or
-dist.ini. If the application has been installed into the system (i.e.
-you have done C<make install>), then Catalyst will use the path to your
+will try and find the directory containing either Makefile.PL, Build.PL,
+dist.ini, or cpanfile. If the application has been installed into the system
+(i.e. you have done C<make install>), then Catalyst will use the path to your
application module, without the .pm extension (e.g., /foo/MyApp if your
application was installed at /foo/MyApp.pm)
=head2 $c->forward( $class, $method, [, \@arguments ] )
-Forwards processing to another action, by its private name. If you give a
+This is one way of calling another action (method) in the same or
+a different controller. You can also use C<< $self->my_method($c, @args) >>
+in the same controller or C<< $c->controller('MyController')->my_method($c, @args) >>
+in a different controller.
+The main difference is that 'forward' uses some of the Catalyst request
+cycle overhead, including debugging, which may be useful to you. On the
+other hand, there are some complications to using 'forward', restrictions
+on values returned from 'forward', and it may not handle errors as you prefer.
+Whether you use 'forward' or not is up to you; it is not considered superior to
+the other ways to call a method.
+
+'forward' calls another action, by its private name. If you give a
class name but no method, C<process()> is called. You may also optionally
pass arguments in an arrayref. The action will receive the arguments in
C<@_> and C<< $c->req->args >>. Upon returning from the function,
sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
+=head2 $c->visit( $action [, \@arguments ] )
+
=head2 $c->visit( $action [, \@captures, \@arguments ] )
+=head2 $c->visit( $class, $method, [, \@arguments ] )
+
=head2 $c->visit( $class, $method, [, \@captures, \@arguments ] )
Almost the same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>,
sub visit { my $c = shift; $c->dispatcher->visit( $c, @_ ) }
+=head2 $c->go( $action [, \@arguments ] )
+
=head2 $c->go( $action [, \@captures, \@arguments ] )
+=head2 $c->go( $class, $method, [, \@arguments ] )
+
=head2 $c->go( $class, $method, [, \@captures, \@arguments ] )
The relationship between C<go> and
# undef for a name will return all
return keys %eligible if !defined $name;
- my $query = ref $name ? $name : qr/^$name$/i;
+ my $query = $name->$_isa('Regexp') ? $name : qr/^$name$/i;
my @result = grep { $eligible{$_} =~ m{$query} } keys %eligible;
return @result if @result;
# if we were given a regexp to search against, we're done.
- return if ref $name;
+ return if $name->$_isa('Regexp');
# skip regexp fallback if configured
return
my $appclass = ref($c) || $c;
if( $name ) {
- unless ( ref($name) ) { # Direct component hash lookup to avoid costly regexps
+ unless ( $name->$_isa('Regexp') ) { # Direct component hash lookup to avoid costly regexps
my $comps = $c->components;
my $check = $appclass."::Controller::".$name;
return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
my ( $c, $name, @args ) = @_;
my $appclass = ref($c) || $c;
if( $name ) {
- unless ( ref($name) ) { # Direct component hash lookup to avoid costly regexps
+ unless ( $name->$_isa('Regexp') ) { # Direct component hash lookup to avoid costly regexps
my $comps = $c->components;
my $check = $appclass."::Model::".$name;
return $c->_filter_component( $comps->{$check}, @args ) if exists $comps->{$check};
my $appclass = ref($c) || $c;
if( $name ) {
- unless ( ref($name) ) { # Direct component hash lookup to avoid costly regexps
+ unless ( $name->$_isa('Regexp') ) { # Direct component hash lookup to avoid costly regexps
my $comps = $c->components;
my $check = $appclass."::View::".$name;
if( exists $comps->{$check} ) {
$class->setup_log( delete $flags->{log} );
$class->setup_plugins( delete $flags->{plugins} );
+ $class->setup_middleware();
+ $class->setup_data_handlers();
$class->setup_dispatcher( delete $flags->{dispatcher} );
if (my $engine = delete $flags->{engine}) {
$class->log->warn("Specifying the engine in ->setup is no longer supported, see Catalyst::Upgrading");
EOF
}
+ # Call plugins setup, this is stupid and evil.
+ # Also screws C3 badly on 5.10, hack to avoid.
+ {
+ no warnings qw/redefine/;
+ local *setup = sub { };
+ $class->setup unless $Catalyst::__AM_RESTARTING;
+ }
+
+ # Initialize our data structure
+ $class->components( {} );
+
+ $class->setup_components;
+
if ( $class->debug ) {
my @plugins = map { "$_ " . ( $_->VERSION || '' ) } $class->registered_plugins;
$class->log->debug( "Loaded plugins:\n" . $t->draw . "\n" );
}
+ my @middleware = map {
+ ref $_ eq 'CODE' ?
+ "Inline Coderef" :
+ (ref($_) .' '. ($_->can('VERSION') ? $_->VERSION || '' : '')
+ || '') } $class->registered_middlewares;
+
+ if (@middleware) {
+ my $column_width = Catalyst::Utils::term_width() - 6;
+ my $t = Text::SimpleTable->new($column_width);
+ $t->row($_) for @middleware;
+ $class->log->debug( "Loaded PSGI Middleware:\n" . $t->draw . "\n" );
+ }
+
+ my %dh = $class->registered_data_handlers;
+ if (my @data_handlers = keys %dh) {
+ my $column_width = Catalyst::Utils::term_width() - 6;
+ my $t = Text::SimpleTable->new($column_width);
+ $t->row($_) for @data_handlers;
+ $class->log->debug( "Loaded Request Data Handlers:\n" . $t->draw . "\n" );
+ }
+
my $dispatcher = $class->dispatcher;
my $engine = $class->engine;
my $home = $class->config->{home};
? $class->log->debug(qq/Found home "$home"/)
: $class->log->debug(qq/Home "$home" doesn't exist/)
: $class->log->debug(q/Couldn't find home/);
- }
-
- # Call plugins setup, this is stupid and evil.
- # Also screws C3 badly on 5.10, hack to avoid.
- {
- no warnings qw/redefine/;
- local *setup = sub { };
- $class->setup unless $Catalyst::__AM_RESTARTING;
- }
-
- # Initialize our data structure
- $class->components( {} );
- $class->setup_components;
-
- if ( $class->debug ) {
my $column_width = Catalyst::Utils::term_width() - 8 - 9;
my $t = Text::SimpleTable->new( [ $column_width, 'Class' ], [ 8, 'Type' ] );
for my $comp ( sort keys %{ $class->components } ) {
$class->log->info("$name powered by Catalyst $Catalyst::VERSION");
}
- # Make sure that the application class becomes immutable at this point,
- B::Hooks::EndOfScope::on_scope_end {
- return if $@;
- my $meta = Class::MOP::get_metaclass_by_name($class);
- if (
- $meta->is_immutable
- && ! { $meta->immutable_options }->{replace_constructor}
- && (
- $class->isa('Class::Accessor::Fast')
- || $class->isa('Class::Accessor')
- )
- ) {
- warn "You made your application class ($class) immutable, "
- . "but did not inline the\nconstructor. "
- . "This will break catalyst, as your app \@ISA "
- . "Class::Accessor(::Fast)?\nPlease pass "
- . "(replace_constructor => 1)\nwhen making your class immutable.\n";
- }
- $meta->make_immutable(
- replace_constructor => 1,
- ) unless $meta->is_immutable;
- };
-
if ($class->config->{case_sensitive}) {
$class->log->warn($class . "->config->{case_sensitive} is set.");
$class->log->warn("This setting is deprecated and planned to be removed in Catalyst 5.81.");
sub uri_for {
my ( $c, $path, @args ) = @_;
- if (blessed($path) && $path->isa('Catalyst::Controller')) {
+ if ( $path->$_isa('Catalyst::Controller') ) {
$path = $path->path_prefix;
$path =~ s{/+\z}{};
$path .= '/';
$arg =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
}
- if ( blessed($path) ) { # action object
+ if ( $path->$_isa('Catalyst::Action') ) { # action object
s|/|%2F|g for @args;
my $captures = [ map { s|/|%2F|g; $_; }
( scalar @args && ref $args[0] eq 'ARRAY'
my $args = join('/', grep { defined($_) } @args);
$args =~ s/\?/%3F/g; # STUPID STUPID SPECIAL CASE
$args =~ s!^/+!!;
- my $base = $c->req->base;
- my $class = ref($base);
- $base =~ s{(?<!/)$}{/};
+
+ my ($base, $class) = ('/', 'URI::_generic');
+ if(blessed($c)) {
+ $base = $c->req->base;
+ $class = ref($base);
+ $base =~ s{(?<!/)$}{/};
+ }
my $query = '';
We do, however, provide you with a few starting points.</p>
<p>If you want to jump right into web development with Catalyst
you might want to start with a tutorial.</p>
-<pre>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Tutorial.pod">Catalyst::Manual::Tutorial</a></code>
+<pre>perldoc <a href="https://metacpan.org/module/Catalyst::Manual::Tutorial">Catalyst::Manual::Tutorial</a></code>
</pre>
<p>Afterwards you can go on to check out a more complete look at our features.</p>
<pre>
-<code>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Intro.pod">Catalyst::Manual::Intro</a>
+<code>perldoc <a href="https://metacpan.org/module/Catalyst::Manual::Intro">Catalyst::Manual::Intro</a>
<!-- Something else should go here, but the Catalyst::Manual link seems unhelpful -->
</code></pre>
<h2>What to do next?</h2>
<p>Next it's time to write an actual application. Use the
- helper scripts to generate <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AController%3A%3A&mode=all">controllers</a>,
- <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AModel%3A%3A&mode=all">models</a>, and
- <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AView%3A%3A&mode=all">views</a>;
+ helper scripts to generate <a href="https://metacpan.org/search?q=Catalyst%3A%3AController">controllers</a>,
+ <a href="https://metacpan.org/search?q=Catalyst%3A%3AModel">models</a>, and
+ <a href="https://metacpan.org/search?q=Catalyst%3A%3AView">views</a>;
they can save you a lot of work.</p>
<pre><code>script/${prefix}_create.pl --help</code></pre>
<p>Also, be sure to check out the vast and growing
$c->log->error($error);
}
+ # Support skipping finalize for psgix.io style 'jailbreak'. Used to support
+ # stuff like cometd and websockets
+
+ if($c->request->_has_io_fh) {
+ $c->log_response;
+ return;
+ }
+
# Allow engine to handle finalize flow (for POE)
my $engine = $c->engine;
if ( my $code = $engine->can('finalize') ) {
$c->finalize_error;
}
- $c->finalize_headers;
+ $c->finalize_headers unless $c->response->finalized_headers;
# HEAD request
if ( $c->request->method eq 'HEAD' ) {
$c->log_response;
if ($c->use_stats) {
- my $elapsed = sprintf '%f', $c->stats->elapsed;
+ my $elapsed = $c->stats->elapsed;
my $av = $elapsed == 0 ? '??' : sprintf '%.3f', 1 / $elapsed;
$c->log->info(
"Request took ${elapsed}s ($av/s)\n" . $c->stats->report . "\n" );
if ( !$response->has_body ) {
# Add a default body if none is already present
+ my $encoded_location = encode_entities($location);
$response->body(<<"EOF");
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<title>Moved</title>
</head>
<body>
- <p>This item has moved <a href="$location">here</a>.</p>
+ <p>This item has moved <a href="$encoded_location">here</a>.</p>
</body>
</html>
EOF
$c->finalize_cookies;
- $c->engine->finalize_headers( $c, @_ );
+ $c->response->finalize_headers();
# Done
$response->finalized_headers(1);
=cut
+has _uploadtmp => (
+ is => 'ro',
+ predicate => '_has_uploadtmp',
+);
+
sub prepare {
my ( $class, @arguments ) = @_;
# into the application.
$class->context_class( ref $class || $class ) unless $class->context_class;
- my $c = $class->context_class->new({});
+ my $uploadtmp = $class->config->{uploadtmp};
+ my $c = $class->context_class->new({ $uploadtmp ? (_uploadtmp => $uploadtmp) : ()});
- # For on-demand data
- $c->request->_context($c);
$c->response->_context($c);
#surely this is not the most efficient way to do things...
$c->prepare_request(@arguments);
$c->prepare_connection;
$c->prepare_query_parameters;
- $c->prepare_headers;
- $c->prepare_cookies;
+ $c->prepare_headers; # Just hooks, no longer needed - they just
+ $c->prepare_cookies; # cause the lazy attribute on req to build
$c->prepare_path;
# Prepare the body for reading, either by prepare_body
$c->prepare_body;
}
}
+ $c->prepare_action;
}
# VERY ugly and probably shouldn't rely on ->finalize actually working
catch {
$c->response->status(400);
$c->response->content_type('text/plain');
$c->response->body('Bad Request');
+ # Note we call finalize and then die here, which escapes
+ # finalize being called in the enclosing block..
+ # It in fact couldn't be called, as we don't return $c..
+ # This is a mess - but I'm unsure you can fix this without
+ # breaking compat for people doing crazy things (we should set
+ # the 400 and just return the ctx here IMO, letting finalize get called
+ # above...
$c->finalize;
die $_;
};
- my $method = $c->req->method || '';
- my $path = $c->req->path;
- $path = '/' unless length $path;
- my $address = $c->req->address || '';
-
$c->log_request;
- $c->prepare_action;
-
return $c;
}
sub prepare_connection {
my $c = shift;
- $c->engine->prepare_connection( $c, @_ );
+ # XXX - This is called on the engine (not the request) to maintain
+ # Engine::PSGI back compat.
+ $c->engine->prepare_connection($c);
}
=head2 $c->prepare_cookies
-Prepares cookies.
+Prepares cookies by ensuring that the attribute on the request
+object has been built.
=cut
-sub prepare_cookies { my $c = shift; $c->engine->prepare_cookies( $c, @_ ) }
+sub prepare_cookies { my $c = shift; $c->request->cookies }
=head2 $c->prepare_headers
-Prepares headers.
+Prepares request headers by ensuring that the attribute on the request
+object has been built.
=cut
-sub prepare_headers { my $c = shift; $c->engine->prepare_headers( $c, @_ ) }
+sub prepare_headers { my $c = shift; $c->request->headers }
=head2 $c->prepare_parameters
=cut
-sub read { my $c = shift; return $c->engine->read( $c, @_ ) }
+sub read { my $c = shift; return $c->request->read( @_ ) }
=head2 $c->run
sub run {
my $app = shift;
+ $app->_make_immutable_if_needed;
$app->engine_loader->needs_psgi_engine_compat_hack ?
$app->engine->run($app, @_) :
$app->engine->run( $app, $app->_finalized_psgi_app, @_ );
}
+sub _make_immutable_if_needed {
+ my $class = shift;
+ my $meta = find_meta($class);
+ my $isa_ca = $class->isa('Class::Accessor::Fast') || $class->isa('Class::Accessor');
+ if (
+ $meta->is_immutable
+ && ! { $meta->immutable_options }->{replace_constructor}
+ && $isa_ca
+ ) {
+ warn("You made your application class ($class) immutable, "
+ . "but did not inline the\nconstructor. "
+ . "This will break catalyst, as your app \@ISA "
+ . "Class::Accessor(::Fast)?\nPlease pass "
+ . "(replace_constructor => 1)\nwhen making your class immutable.\n");
+ }
+ unless ($meta->is_immutable) {
+ # XXX - FIXME warning here as you should make your app immutable yourself.
+ $meta->make_immutable(
+ replace_constructor => 1,
+ );
+ }
+}
+
=head2 $c->set_action( $action, $code, $namespace, $attrs )
Sets an action in a given namespace.
$dispatcher = $class->dispatcher_class;
}
- Class::MOP::load_class($dispatcher);
+ load_class($dispatcher);
# dispatcher instance
$class->dispatcher( $dispatcher->new );
# Don't really setup_engine -- see _setup_psgi_app for explanation.
return if $class->loading_psgi_file;
- Class::MOP::load_class($engine);
+ load_class($engine);
if ($ENV{MOD_PERL}) {
my $apache = $class->engine_loader->auto;
return;
}
+## This exists just to supply a prebuild psgi app for mod_perl and for the
+## build in server support (back compat support for pre psgi port behavior).
+## This is so that we don't build a new psgi app for each request when using
+## the mod_perl handler or the built in servers (http and fcgi, etc).
+
sub _finalized_psgi_app {
my ($app) = @_;
return $app->_psgi_app;
}
+## Look for a psgi file like 'myapp_web.psgi' (if the app is MyApp::Web) in the
+## home directory and load that and return it (just assume it is doing the
+## right thing :) ). If that does not exist, call $app->psgi_app, wrap that
+## in default_middleware and return it ( this is for backward compatibility
+## with pre psgi port behavior ).
+
sub _setup_psgi_app {
my ($app) = @_;
# If we're running under Lighttpd, swap PATH_INFO and SCRIPT_NAME
# http://lists.scsys.co.uk/pipermail/catalyst/2006-June/008361.html
- $psgi_app = Plack::Middleware::LighttpdScriptNameFix->wrap($psgi_app);
+ $psgi_app = Plack::Middleware::Conditional->wrap(
+ $psgi_app,
+ builder => sub { Plack::Middleware::LighttpdScriptNameFix->wrap($_[0]) },
+ condition => sub {
+ my ($env) = @_;
+ return unless $env->{SERVER_SOFTWARE} && $env->{SERVER_SOFTWARE} =~ m!lighttpd[-/]1\.(\d+\.\d+)!;
+ return unless $1 < 4.23;
+ 1;
+ },
+ );
# we're applying this unconditionally as the middleware itself already makes
# sure it doesn't fuck things up if it's not running under one of the right
# IIS versions
$psgi_app = Plack::Middleware::IIS6ScriptNameFix->wrap($psgi_app);
+ # And another IIS issue, this time with IIS7.
+ $psgi_app = Plack::Middleware::Conditional->wrap(
+ $psgi_app,
+ builder => sub { Plack::Middleware::IIS7KeepAliveFix->wrap($_[0]) },
+ condition => sub {
+ my ($env) = @_;
+ return $env->{SERVER_SOFTWARE} && $env->{SERVER_SOFTWARE} =~ m!IIS/7\.[0-9]!;
+ },
+ );
+
return $psgi_app;
}
sub psgi_app {
my ($app) = @_;
- return $app->engine->build_psgi_app($app);
+ my $psgi = $app->engine->build_psgi_app($app);
+ return $app->Catalyst::Utils::apply_registered_middleware($psgi);
}
=head2 $c->setup_home
my ( $proto, $plugin, $instant ) = @_;
my $class = ref $proto || $proto;
- Class::MOP::load_class( $plugin );
+ load_class( $plugin );
$class->log->warn( "$plugin inherits from 'Catalyst::Component' - this is deprecated and will not work in 5.81" )
if $plugin->isa( 'Catalyst::Component' );
- $proto->_plugins->{$plugin} = 1;
- unless ($instant) {
+ my $plugin_meta = Moose::Meta::Class->create($plugin);
+ if (!$plugin_meta->has_method('new')
+ && ( $plugin->isa('Class::Accessor::Fast') || $plugin->isa('Class::Accessor') ) ) {
+ $plugin_meta->add_method('new', Moose::Object->meta->get_method('new'))
+ }
+ if (!$instant && !$proto->_plugins->{$plugin}) {
my $meta = Class::MOP::get_metaclass_by_name($class);
$meta->superclasses($plugin, $meta->superclasses);
}
+ $proto->_plugins->{$plugin} = 1;
return $class;
}
+ sub _default_plugins { return qw(Unicode::Encoding) }
+
sub setup_plugins {
my ( $class, $plugins ) = @_;
$class->_plugins( {} ) unless $class->_plugins;
+ $plugins = [ grep {
+ m/Unicode::Encoding/ ? do {
+ $class->log->warn(
+ 'Unicode::Encoding plugin is auto-applied,'
+ . ' please remove this from your appclass'
+ . ' and make sure to define "encoding" config'
+ );
+ unless (exists $class->config->{'encoding'}) {
+ $class->config->{'encoding'} = 'UTF-8';
+ }
+ () }
+ : $_
+ } @$plugins ];
+ push @$plugins, $class->_default_plugins;
$plugins = Data::OptList::mkopt($plugins || []);
my @plugins = map {
} @{ $plugins };
for my $plugin ( reverse @plugins ) {
- Class::MOP::load_class($plugin->[0], $plugin->[1]);
+ load_class($plugin->[0], $plugin->[1]);
my $meta = find_meta($plugin->[0]);
next if $meta && $meta->isa('Moose::Meta::Role');
$class => @roles
) if @roles;
}
+}
+
+=head2 registered_middlewares
+
+Read only accessor that returns an array of all the middleware in the order
+that they were added (which is the REVERSE of the order they will be applied).
+
+The values returned will be either instances of L<Plack::Middleware> or of a
+compatible interface, or a coderef, which is assumed to be inlined middleware
+
+=head2 setup_middleware (?@middleware)
+
+Read configuration information stored in configuration key C<psgi_middleware> or
+from passed @args.
+
+See under L</CONFIGURATION> information regarding C<psgi_middleware> and how
+to use it to enable L<Plack::Middleware>
+
+This method is automatically called during 'setup' of your application, so
+you really don't need to invoke it.
+
+When we read middleware definitions from configuration, we reverse the list
+which sounds odd but is likely how you expect it to work if you have prior
+experience with L<Plack::Builder> or if you previously used the plugin
+L<Catalyst::Plugin::EnableMiddleware> (which is now considered deprecated)
+
+=cut
+
+sub registered_middlewares {
+ my $class = shift;
+ if(my $middleware = $class->_psgi_middleware) {
+ return @$middleware;
+ } else {
+ die "You cannot call ->registered_middlewares until middleware has been setup";
+ }
+}
+
+sub setup_middleware {
+ my ($class, @middleware_definitions) = @_;
+ push @middleware_definitions, reverse(
+ @{$class->config->{'psgi_middleware'}||[]});
+
+ my @middleware = ();
+ while(my $next = shift(@middleware_definitions)) {
+ if(ref $next) {
+ if(Scalar::Util::blessed $next && $next->can('wrap')) {
+ push @middleware, $next;
+ } elsif(ref $next eq 'CODE') {
+ push @middleware, $next;
+ } elsif(ref $next eq 'HASH') {
+ my $namespace = shift @middleware_definitions;
+ my $mw = $class->Catalyst::Utils::build_middleware($namespace, %$next);
+ push @middleware, $mw;
+ } else {
+ die "I can't handle middleware definition ${\ref $next}";
+ }
+ } else {
+ my $mw = $class->Catalyst::Utils::build_middleware($next);
+ push @middleware, $mw;
+ }
+ }
+
+ $class->_psgi_middleware(\@middleware);
+}
+
+=head2 registered_data_handlers
+
+A read only copy of registered Data Handlers returned as a Hash, where each key
+is a content type and each value is a subref that attempts to decode that content
+type.
+
+=head2 setup_data_handlers (?@data_handler)
+
+Read configuration information stored in configuration key C<data_handlers> or
+from passed @args.
+
+See under L</CONFIGURATION> information regarding C<data_handlers>.
+
+This method is automatically called during 'setup' of your application, so
+you really don't need to invoke it.
+
+=head2 default_data_handlers
+
+Default Data Handlers that come bundled with L<Catalyst>. Currently there are
+only two default data handlers, for 'application/json' and an alternative to
+'application/x-www-form-urlencoded' which supposed nested form parameters via
+L<CGI::Struct> or via L<CGI::Struct::XS> IF you've installed it.
+
+The 'application/json' data handler is used to parse incoming JSON into a Perl
+data structure. It used either L<JSON::MaybeXS> or L<JSON>, depending on which
+is installed. This allows you to fail back to L<JSON:PP>, which is a Pure Perl
+JSON decoder, and has the smallest dependency impact.
+
+Because we don't wish to add more dependencies to L<Catalyst>, if you wish to
+use this new feature we recommend installing L<JSON> or L<JSON::MaybeXS> in
+order to get the best performance. You should add either to your dependency
+list (Makefile.PL, dist.ini, cpanfile, etc.)
+
+=cut
+
+sub registered_data_handlers {
+ my $class = shift;
+ if(my $data_handlers = $class->_data_handlers) {
+ return %$data_handlers;
+ } else {
+ die "You cannot call ->registered_data_handlers until data_handers has been setup";
+ }
+}
+
+sub setup_data_handlers {
+ my ($class, %data_handler_callbacks) = @_;
+ %data_handler_callbacks = (
+ %{$class->default_data_handlers},
+ %{$class->config->{'data_handlers'}||+{}},
+ %data_handler_callbacks);
+
+ $class->_data_handlers(\%data_handler_callbacks);
+}
+
+sub default_data_handlers {
+ my ($class) = @_;
+ return +{
+ 'application/x-www-form-urlencoded' => sub {
+ my ($fh, $req) = @_;
+ my $params = $req->_use_hash_multivalue ? $req->body_parameters->mixed : $req->body_parameters;
+ Class::Load::load_first_existing_class('CGI::Struct::XS', 'CGI::Struct')
+ ->can('build_cgi_struct')->($params);
+ },
+ 'application/json' => sub {
+ Class::Load::load_first_existing_class('JSON::MaybeXS', 'JSON')
+ ->can('decode_json')->(do { local $/; $_->getline });
+ },
+ };
}
=head2 $c->stack
sub write {
my $c = shift;
- # Finalize headers if someone manually writes output
+ # Finalize headers if someone manually writes output (for compat)
$c->finalize_headers;
- return $c->engine->write( $c, @_ );
+ return $c->response->write( @_ );
}
=head2 version
at other URIs than that which the app is 'normally' based at with C<mod_rewrite>), the resolution of
C<< $c->request->base >> will be incorrect.
-=back
+=back
=item *
C<using_frontend_proxy> - See L</PROXY SUPPORT>.
+=item *
+
+C<encoding> - See L</ENCODING>
+
+=item *
+
+C<abort_chain_on_error_fix>
+
+When there is an error in an action chain, the default behavior is to continue
+processing the remaining actions and then catch the error upon chain end. This
+can lead to running actions when the application is in an unexpected state. If
+you have this issue, setting this config value to true will promptly exit a
+chain when there is an error raised in any action (thus terminating the chain
+early.)
+
+use like:
+
+ __PACKAGE__->config(abort_chain_on_error_fix => 1);
+
+In the future this might become the default behavior.
+
+=item *
+
+C<use_hash_multivalue_in_request>
+
+In L<Catalyst::Request> the methods C<query_parameters>, C<body_parametes>
+and C<parameters> return a hashref where values might be scalar or an arrayref
+depending on the incoming data. In many cases this can be undesirable as it
+leads one to writing defensive code like the following:
+
+ my ($val) = ref($c->req->parameters->{a}) ?
+ @{$c->req->parameters->{a}} :
+ $c->req->parameters->{a};
+
+Setting this configuration item to true will make L<Catalyst> populate the
+attributes underlying these methods with an instance of L<Hash::MultiValue>
+which is used by L<Plack::Request> and others to solve this very issue. You
+may prefer this behavior to the default, if so enable this option (be warned
+if you enable it in a legacy application we are not sure if it is completely
+backwardly compatible).
+
+=item *
+
+C<psgi_middleware> - See L<PSGI MIDDLEWARE>.
+
+=item *
+
+C<data_handlers> - See L<DATA HANDLERS>.
+
=back
=head1 INTERNAL ACTIONS
modules you are using must also be thread-safe. Some modules, most notably
L<DBD::SQLite>, are not thread-safe.
+=head1 DATA HANDLERS
+
+The L<Catalyst::Request> object uses L<HTTP::Body> to populate 'classic' HTML
+form parameters and URL search query fields. However it has become common
+for various alternative content types to be PUT or POSTed to your controllers
+and actions. People working on RESTful APIs, or using AJAX often use JSON,
+XML and other content types when communicating with an application server. In
+order to better support this use case, L<Catalyst> defines a global configuration
+option, C<data_handlers>, which lets you associate a content type with a coderef
+that parses that content type into something Perl can readily access.
+
+ package MyApp::Web;
+
+ use Catalyst;
+ use JSON::Maybe;
+
+ __PACKAGE__->config(
+ data_handlers => {
+ 'application/json' => sub { local $/; decode_json $_->getline },
+ },
+ ## Any other configuration.
+ );
+
+ __PACKAGE__->setup;
+
+By default L<Catalyst> comes with a generic JSON data handler similar to the
+example given above, which uses L<JSON::Maybe> to provide either L<JSON::PP>
+(a pure Perl, dependency free JSON parser) or L<Cpanel::JSON::XS> if you have
+it installed (if you want the faster XS parser, add it to you project Makefile.PL
+or dist.ini, cpanfile, etc.)
+
+The C<data_handlers> configuation is a hashref whose keys are HTTP Content-Types
+(matched against the incoming request type using a regexp such as to be case
+insensitive) and whose values are coderefs that receive a localized version of
+C<$_> which is a filehandle object pointing to received body.
+
+This feature is considered an early access release and we reserve the right
+to alter the interface in order to provide a performant and secure solution to
+alternative request body content. Your reports welcomed!
+
+=head1 PSGI MIDDLEWARE
+
+You can define middleware, defined as L<Plack::Middleware> or a compatible
+interface in configuration. Your middleware definitions are in the form of an
+arrayref under the configuration key C<psgi_middleware>. Here's an example
+with details to follow:
+
+ package MyApp::Web;
+
+ use Catalyst;
+ use Plack::Middleware::StackTrace;
+
+ my $stacktrace_middleware = Plack::Middleware::StackTrace->new;
+
+ __PACKAGE__->config(
+ 'psgi_middleware', [
+ 'Debug',
+ '+MyApp::Custom',
+ $stacktrace_middleware,
+ 'Session' => {store => 'File'},
+ sub {
+ my $app = shift;
+ return sub {
+ my $env = shift;
+ $env->{myapp.customkey} = 'helloworld';
+ $app->($env);
+ },
+ },
+ ],
+ );
+
+ __PACKAGE__->setup;
+
+So the general form is:
+
+ __PACKAGE__->config(psgi_middleware => \@middleware_definitions);
+
+Where C<@middleware> is one or more of the following, applied in the REVERSE of
+the order listed (to make it function similarly to L<Plack::Builder>:
+
+=over 4
+
+=item Middleware Object
+
+An already initialized object that conforms to the L<Plack::Middleware>
+specification:
+
+ my $stacktrace_middleware = Plack::Middleware::StackTrace->new;
+
+ __PACKAGE__->config(
+ 'psgi_middleware', [
+ $stacktrace_middleware,
+ ]);
+
+
+=item coderef
+
+A coderef that is an inlined middleware:
+
+ __PACKAGE__->config(
+ 'psgi_middleware', [
+ sub {
+ my $app = shift;
+ return sub {
+ my $env = shift;
+ if($env->{PATH_INFO} =~m/forced/) {
+ Plack::App::File
+ ->new(file=>TestApp->path_to(qw/share static forced.txt/))
+ ->call($env);
+ } else {
+ return $app->($env);
+ }
+ },
+ },
+ ]);
+
+
+
+=item a scalar
+
+We assume the scalar refers to a namespace after normalizing it using the
+following rules:
+
+(1) If the scalar is prefixed with a "+" (as in C<+MyApp::Foo>) then the full string
+is assumed to be 'as is', and we just install and use the middleware.
+
+(2) If the scalar begins with "Plack::Middleware" or your application namespace
+(the package name of your Catalyst application subclass), we also assume then
+that it is a full namespace, and use it.
+
+(3) Lastly, we then assume that the scalar is a partial namespace, and attempt to
+resolve it first by looking for it under your application namespace (for example
+if you application is "MyApp::Web" and the scalar is "MyMiddleware", we'd look
+under "MyApp::Web::Middleware::MyMiddleware") and if we don't find it there, we
+will then look under the regular L<Plack::Middleware> namespace (i.e. for the
+previous we'd try "Plack::Middleware::MyMiddleware"). We look under your application
+namespace first to let you 'override' common L<Plack::Middleware> locally, should
+you find that a good idea.
+
+Examples:
+
+ package MyApp::Web;
+
+ __PACKAGE__->config(
+ 'psgi_middleware', [
+ 'Debug', ## MyAppWeb::Middleware::Debug->wrap or Plack::Middleware::Debug->wrap
+ 'Plack::Middleware::Stacktrace', ## Plack::Middleware::Stacktrace->wrap
+ '+MyApp::Custom', ## MyApp::Custom->wrap
+ ],
+ );
+
+=item a scalar followed by a hashref
+
+Just like the previous, except the following C<HashRef> is used as arguments
+to initialize the middleware object.
+
+ __PACKAGE__->config(
+ 'psgi_middleware', [
+ 'Session' => {store => 'File'},
+ ]);
+
+=back
+
+Please see L<PSGI> for more on middleware.
+
+=head1 ENCODING
+
+On request, decodes all params from encoding into a sequence of
+logical characters. On response, encodes body into encoding.
+
+=head2 Methods
+
+=over 4
+
+=item encoding
+
+Returns an instance of an C<Encode> encoding
+
+ print $c->encoding->name
+
+=item handle_unicode_encoding_exception ($exception_context)
+
+Method called when decoding process for a request fails.
+
+An C<$exception_context> hashref is provided to allow you to override the
+behaviour of your application when given data with incorrect encodings.
+
+The default method throws exceptions in the case of invalid request parameters
+(resulting in a 500 error), but ignores errors in upload filenames.
+
+The keys passed in the C<$exception_context> hash are:
+
+=over
+
+=item param_value
+
+The value which was not able to be decoded.
+
+=item error_msg
+
+The exception received from L<Encode>.
+
+=item encoding_step
+
+What type of data was being decoded. Valid values are (currently)
+C<params> - for request parameters / arguments / captures
+and C<uploads> - for request upload filenames.
+
+=back
+
+=back
+
=head1 SUPPORT
IRC:
=head2 L<Catalyst::Test> - The test suite.
-=begin stopwords
-
=head1 PROJECT FOUNDER
sri: Sebastian Riedel <sri@cpan.org>
miyagawa: Tatsuhiko Miyagawa <miyagawa@bulknews.net>
+mgrimes: Mark Grimes <mgrimes@cpan.org>
+
mst: Matt S. Trout <mst@shadowcatsystems.co.uk>
mugwump: Sam Vilain
willert: Sebastian Willert <willert@cpan.org>
-wreis: Wallace Reis <wallace@reis.org.br>
+wreis: Wallace Reis <wreis@cpan.org>
Yuval Kogman, C<nothingmuch@woobling.org>
dd070: Dhaval Dhanani <dhaval070@gmail.com>
-=end stopwords
-
=head1 COPYRIGHT
Copyright (c) 2005, the above named PROJECT FOUNDER and CONTRIBUTORS.
projects / catagits/Catalyst-Runtime.git / blobdiff