4 use Moose::Meta::Class ();
5 extends 'Catalyst::Component';
6 use Moose::Util qw/find_meta/;
8 use B::Hooks::EndOfScope ();
9 use Catalyst::Exception;
10 use Catalyst::Exception::Detach;
11 use Catalyst::Exception::Go;
13 use Catalyst::Request;
14 use Catalyst::Request::Upload;
15 use Catalyst::Response;
17 use Catalyst::Controller;
18 use Devel::InnerPackage ();
20 use Module::Pluggable::Object ();
21 use Text::SimpleTable ();
22 use Path::Class::Dir ();
23 use Path::Class::File ();
27 use Tree::Simple qw/use_weak_refs/;
28 use Tree::Simple::Visitor::FindByUID;
29 use Class::C3::Adopt::NEXT;
30 use List::MoreUtils qw/uniq/;
33 use Carp qw/croak carp shortmess/;
35 BEGIN { require 5.008004; }
37 has stack => (is => 'ro', default => sub { [] });
38 has stash => (is => 'rw', default => sub { {} });
39 has state => (is => 'rw', default => 0);
40 has stats => (is => 'rw');
41 has action => (is => 'rw');
42 has counter => (is => 'rw', default => sub { {} });
43 has request => (is => 'rw', default => sub { $_[0]->request_class->new({}) }, required => 1, lazy => 1);
44 has response => (is => 'rw', default => sub { $_[0]->response_class->new({}) }, required => 1, lazy => 1);
45 has namespace => (is => 'rw');
47 sub depth { scalar @{ shift->stack || [] }; }
48 sub comp { shift->component(@_) }
51 my $self = shift; return $self->request(@_);
54 my $self = shift; return $self->response(@_);
57 # For backwards compatibility
58 sub finalize_output { shift->finalize_body(@_) };
63 our $RECURSION = 1000;
64 our $DETACH = Catalyst::Exception::Detach->new;
65 our $GO = Catalyst::Exception::Go->new;
67 #I imagine that very few of these really need to be class variables. if any.
68 #maybe we should just make them attributes with a default?
69 __PACKAGE__->mk_classdata($_)
70 for qw/components arguments dispatcher engine log dispatcher_class
71 engine_class context_class request_class response_class stats_class
74 __PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
75 __PACKAGE__->engine_class('Catalyst::Engine::CGI');
76 __PACKAGE__->request_class('Catalyst::Request');
77 __PACKAGE__->response_class('Catalyst::Response');
78 __PACKAGE__->stats_class('Catalyst::Stats');
80 # Remember to update this in Catalyst::Runtime as well!
82 our $VERSION = '5.80013';
85 my $dev_version = $VERSION =~ /_\d{2}$/;
86 *_IS_DEVELOPMENT_VERSION = sub () { $dev_version };
89 $VERSION = eval $VERSION;
92 my ( $class, @arguments ) = @_;
94 # We have to limit $class to Catalyst to avoid pushing Catalyst upon every
96 return unless $class eq 'Catalyst';
98 my $caller = caller();
99 return if $caller eq 'main';
101 # Kill Adopt::NEXT warnings if we're a non-RC version
102 unless (_IS_DEVELOPMENT_VERSION()) {
103 Class::C3::Adopt::NEXT->unimport(qr/^Catalyst::/);
106 my $meta = Moose::Meta::Class->initialize($caller);
107 unless ( $caller->isa('Catalyst') ) {
108 my @superclasses = ($meta->superclasses, $class, 'Catalyst::Controller');
109 $meta->superclasses(@superclasses);
111 # Avoid possible C3 issues if 'Moose::Object' is already on RHS of MyApp
112 $meta->superclasses(grep { $_ ne 'Moose::Object' } $meta->superclasses);
114 unless( $meta->has_method('meta') ){
115 $meta->add_method(meta => sub { Moose::Meta::Class->initialize("${caller}") } );
118 $caller->arguments( [@arguments] );
122 sub _application { $_[0] }
126 Catalyst - The Elegant MVC Web Application Framework
130 See the L<Catalyst::Manual> distribution for comprehensive
131 documentation and tutorials.
133 # Install Catalyst::Devel for helpers and other development tools
134 # use the helper to create a new application
137 # add models, views, controllers
138 script/myapp_create.pl model MyDatabase DBIC::Schema create=static dbi:SQLite:/path/to/db
139 script/myapp_create.pl view MyTemplate TT
140 script/myapp_create.pl controller Search
142 # built in testserver -- use -r to restart automatically on changes
143 # --help to see all available options
144 script/myapp_server.pl
146 # command line testing interface
147 script/myapp_test.pl /yada
150 use Catalyst qw/-Debug/; # include plugins here as well
152 ### In lib/MyApp/Controller/Root.pm (autocreated)
153 sub foo : Global { # called for /foo, /foo/1, /foo/1/2, etc.
154 my ( $self, $c, @args ) = @_; # args are qw/1 2/ for /foo/1/2
155 $c->stash->{template} = 'foo.tt'; # set the template
156 # lookup something from db -- stash vars are passed to TT
158 $c->model('Database::Foo')->search( { country => $args[0] } );
159 if ( $c->req->params->{bar} ) { # access GET or POST parameters
160 $c->forward( 'bar' ); # process another action
161 # do something else after forward returns
165 # The foo.tt TT template can use the stash data from the database
166 [% WHILE (item = data.next) %]
170 # called for /bar/of/soap, /bar/of/soap/10, etc.
171 sub bar : Path('/bar/of/soap') { ... }
173 # called for all actions, from the top-most controller downwards
175 my ( $self, $c ) = @_;
176 if ( !$c->user_exists ) { # Catalyst::Plugin::Authentication
177 $c->res->redirect( '/login' ); # require login
178 return 0; # abort request and go immediately to end()
180 return 1; # success; carry on to next action
183 # called after all actions are finished
185 my ( $self, $c ) = @_;
186 if ( scalar @{ $c->error } ) { ... } # handle errors
187 return if $c->res->body; # already have a response
188 $c->forward( 'MyApp::View::TT' ); # render template
191 ### in MyApp/Controller/Foo.pm
192 # called for /foo/bar
193 sub bar : Local { ... }
195 # called for /blargle
196 sub blargle : Global { ... }
198 # an index action matches /foo, but not /foo/1, etc.
199 sub index : Private { ... }
201 ### in MyApp/Controller/Foo/Bar.pm
202 # called for /foo/bar/baz
203 sub baz : Local { ... }
205 # first Root auto is called, then Foo auto, then this
206 sub auto : Private { ... }
208 # powerful regular expression paths are also possible
209 sub details : Regex('^product/(\w+)/details$') {
210 my ( $self, $c ) = @_;
211 # extract the (\w+) from the URI
212 my $product = $c->req->captures->[0];
215 See L<Catalyst::Manual::Intro> for additional information.
219 Catalyst is a modern framework for making web applications without the
220 pain usually associated with this process. This document is a reference
221 to the main Catalyst application. If you are a new user, we suggest you
222 start with L<Catalyst::Manual::Tutorial> or L<Catalyst::Manual::Intro>.
224 See L<Catalyst::Manual> for more documentation.
226 Catalyst plugins can be loaded by naming them as arguments to the "use
227 Catalyst" statement. Omit the C<Catalyst::Plugin::> prefix from the
228 plugin name, i.e., C<Catalyst::Plugin::My::Module> becomes
231 use Catalyst qw/My::Module/;
233 If your plugin starts with a name other than C<Catalyst::Plugin::>, you can
234 fully qualify the name by using a unary plus:
238 +Fully::Qualified::Plugin::Name
241 Special flags like C<-Debug> and C<-Engine> can also be specified as
242 arguments when Catalyst is loaded:
244 use Catalyst qw/-Debug My::Module/;
246 The position of plugins and flags in the chain is important, because
247 they are loaded in the order in which they appear.
249 The following flags are supported:
253 Enables debug output. You can also force this setting from the system
254 environment with CATALYST_DEBUG or <MYAPP>_DEBUG. The environment
255 settings override the application, with <MYAPP>_DEBUG having the highest
260 Forces Catalyst to use a specific engine. Omit the
261 C<Catalyst::Engine::> prefix of the engine name, i.e.:
263 use Catalyst qw/-Engine=CGI/;
267 Forces Catalyst to use a specific home directory, e.g.:
269 use Catalyst qw[-Home=/usr/mst];
271 This can also be done in the shell environment by setting either the
272 C<CATALYST_HOME> environment variable or C<MYAPP_HOME>; where C<MYAPP>
273 is replaced with the uppercased name of your application, any "::" in
274 the name will be replaced with underscores, e.g. MyApp::Web should use
275 MYAPP_WEB_HOME. If both variables are set, the MYAPP_HOME one will be used.
279 use Catalyst '-Log=warn,fatal,error';
281 Specifies a comma-delimited list of log levels.
285 Enables statistics collection and reporting. You can also force this setting
286 from the system environment with CATALYST_STATS or <MYAPP>_STATS. The
287 environment settings override the application, with <MYAPP>_STATS having the
292 use Catalyst qw/-Stats=1/
296 =head2 INFORMATION ABOUT THE CURRENT REQUEST
300 Returns a L<Catalyst::Action> object for the current action, which
301 stringifies to the action name. See L<Catalyst::Action>.
305 Returns the namespace of the current action, i.e., the URI prefix
306 corresponding to the controller of the current action. For example:
308 # in Controller::Foo::Bar
309 $c->namespace; # returns 'foo/bar';
315 Returns the current L<Catalyst::Request> object, giving access to
316 information about the current client request (including parameters,
317 cookies, HTTP headers, etc.). See L<Catalyst::Request>.
319 =head2 REQUEST FLOW HANDLING
321 =head2 $c->forward( $action [, \@arguments ] )
323 =head2 $c->forward( $class, $method, [, \@arguments ] )
325 Forwards processing to another action, by its private name. If you give a
326 class name but no method, C<process()> is called. You may also optionally
327 pass arguments in an arrayref. The action will receive the arguments in
328 C<@_> and C<< $c->req->args >>. Upon returning from the function,
329 C<< $c->req->args >> will be restored to the previous values.
331 Any data C<return>ed from the action forwarded to, will be returned by the
334 my $foodata = $c->forward('/foo');
335 $c->forward('index');
336 $c->forward(qw/MyApp::Model::DBIC::Foo do_stuff/);
337 $c->forward('MyApp::View::TT');
339 Note that L<< forward|/"$c->forward( $action [, \@arguments ] )" >> implies
340 an C<< eval { } >> around the call (actually
341 L<< execute|/"$c->execute( $class, $coderef )" >> does), thus de-fatalizing
342 all 'dies' within the called action. If you want C<die> to propagate you
343 need to do something like:
346 die $c->error if $c->error;
348 Or make sure to always return true values from your actions and write
351 $c->forward('foo') || return;
353 Another note is that C<< $c->forward >> always returns a scalar because it
354 actually returns $c->state which operates in a scalar context.
355 Thus, something like:
359 in an action that is forwarded to is going to return a scalar,
360 i.e. how many items are in that array, which is probably not what you want.
361 If you need to return an array then return a reference to it,
364 $c->stash->{array} = \@array;
366 and access it from the stash.
370 sub forward { my $c = shift; no warnings 'recursion'; $c->dispatcher->forward( $c, @_ ) }
372 =head2 $c->detach( $action [, \@arguments ] )
374 =head2 $c->detach( $class, $method, [, \@arguments ] )
378 The same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, but
379 doesn't return to the previous action when processing is finished.
381 When called with no arguments it escapes the processing chain entirely.
385 sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
387 =head2 $c->visit( $action [, \@captures, \@arguments ] )
389 =head2 $c->visit( $class, $method, [, \@captures, \@arguments ] )
391 Almost the same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>,
392 but does a full dispatch, instead of just calling the new C<$action> /
393 C<< $class->$method >>. This means that C<begin>, C<auto> and the method
394 you go to are called, just like a new request.
396 In addition both C<< $c->action >> and C<< $c->namespace >> are localized.
397 This means, for example, that C<< $c->action >> methods such as
398 L<name|Catalyst::Action/name>, L<class|Catalyst::Action/class> and
399 L<reverse|Catalyst::Action/reverse> return information for the visited action
400 when they are invoked within the visited action. This is different from the
401 behavior of L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, which
402 continues to use the $c->action object from the caller action even when
403 invoked from the callee.
405 C<< $c->stash >> is kept unchanged.
407 In effect, L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >>
408 allows you to "wrap" another action, just as it would have been called by
409 dispatching from a URL, while the analogous
410 L<< go|/"$c->go( $action [, \@captures, \@arguments ] )" >> allows you to
411 transfer control to another action as if it had been reached directly from a URL.
415 sub visit { my $c = shift; $c->dispatcher->visit( $c, @_ ) }
417 =head2 $c->go( $action [, \@captures, \@arguments ] )
419 =head2 $c->go( $class, $method, [, \@captures, \@arguments ] )
421 The relationship between C<go> and
422 L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >> is the same as
423 the relationship between
424 L<< forward|/"$c->forward( $class, $method, [, \@arguments ] )" >> and
425 L<< detach|/"$c->detach( $action [, \@arguments ] )" >>. Like C<< $c->visit >>,
426 C<< $c->go >> will perform a full dispatch on the specified action or method,
427 with localized C<< $c->action >> and C<< $c->namespace >>. Like C<detach>,
428 C<go> escapes the processing of the current request chain on completion, and
429 does not return to its caller.
433 sub go { my $c = shift; $c->dispatcher->go( $c, @_ ) }
439 Returns the current L<Catalyst::Response> object, see there for details.
443 Returns a hashref to the stash, which may be used to store data and pass
444 it between components during a request. You can also set hash keys by
445 passing arguments. The stash is automatically sent to the view. The
446 stash is cleared at the end of a request; it cannot be used for
447 persistent storage (for this you must use a session; see
448 L<Catalyst::Plugin::Session> for a complete system integrated with
451 $c->stash->{foo} = $bar;
452 $c->stash( { moose => 'majestic', qux => 0 } );
453 $c->stash( bar => 1, gorch => 2 ); # equivalent to passing a hashref
455 # stash is automatically passed to the view for use in a template
456 $c->forward( 'MyApp::View::TT' );
460 around stash => sub {
463 my $stash = $orig->($c);
465 my $new_stash = @_ > 1 ? {@_} : $_[0];
466 croak('stash takes a hash or hashref') unless ref $new_stash;
467 foreach my $key ( keys %$new_stash ) {
468 $stash->{$key} = $new_stash->{$key};
478 =head2 $c->error($error, ...)
480 =head2 $c->error($arrayref)
482 Returns an arrayref containing error messages. If Catalyst encounters an
483 error while processing a request, it stores the error in $c->error. This
484 method should only be used to store fatal error messages.
486 my @error = @{ $c->error };
490 $c->error('Something bad happened');
497 my $error = ref $_[0] eq 'ARRAY' ? $_[0] : [@_];
498 croak @$error unless ref $c;
499 push @{ $c->{error} }, @$error;
501 elsif ( defined $_[0] ) { $c->{error} = undef }
502 return $c->{error} || [];
508 Contains the return value of the last executed action.
509 Note that << $c->state >> operates in a scalar context which means that all
510 values it returns are scalar.
512 =head2 $c->clear_errors
514 Clear errors. You probably don't want to clear the errors unless you are
515 implementing a custom error screen.
517 This is equivalent to running
528 sub _comp_search_prefixes {
530 return map $c->components->{ $_ }, $c->_comp_names_search_prefixes(@_);
533 # search components given a name and some prefixes
534 sub _comp_names_search_prefixes {
535 my ( $c, $name, @prefixes ) = @_;
536 my $appclass = ref $c || $c;
537 my $filter = "^${appclass}::(" . join( '|', @prefixes ) . ')::';
538 $filter = qr/$filter/; # Compile regex now rather than once per loop
540 # map the original component name to the sub part that we will search against
541 my %eligible = map { my $n = $_; $n =~ s{^$appclass\::[^:]+::}{}; $_ => $n; }
542 grep { /$filter/ } keys %{ $c->components };
544 # undef for a name will return all
545 return keys %eligible if !defined $name;
547 my $query = ref $name ? $name : qr/^$name$/i;
548 my @result = grep { $eligible{$_} =~ m{$query} } keys %eligible;
550 return @result if @result;
552 # if we were given a regexp to search against, we're done.
555 # skip regexp fallback if configured
557 if $appclass->config->{disable_component_resolution_regex_fallback};
561 @result = grep { $eligible{ $_ } =~ m{$query} } keys %eligible;
563 # no results? try against full names
565 @result = grep { m{$query} } keys %eligible;
568 # don't warn if we didn't find any results, it just might not exist
570 # Disgusting hack to work out correct method name
571 my $warn_for = lc $prefixes[0];
572 my $msg = "Used regexp fallback for \$c->${warn_for}('${name}'), which found '" .
573 (join '", "', @result) . "'. Relying on regexp fallback behavior for " .
574 "component resolution is unreliable and unsafe.";
575 my $short = $result[0];
576 # remove the component namespace prefix
577 $short =~ s/.*?(Model|Controller|View):://;
578 my $shortmess = Carp::shortmess('');
579 if ($shortmess =~ m#Catalyst/Plugin#) {
580 $msg .= " You probably need to set '$short' instead of '${name}' in this " .
582 } elsif ($shortmess =~ m#Catalyst/lib/(View|Controller)#) {
583 $msg .= " You probably need to set '$short' instead of '${name}' in this " .
584 "component's config";
586 $msg .= " You probably meant \$c->${warn_for}('$short') instead of \$c->${warn_for}('${name}'), " .
587 "but if you really wanted to search, pass in a regexp as the argument " .
588 "like so: \$c->${warn_for}(qr/${name}/)";
590 $c->log->warn( "${msg}$shortmess" );
596 # Find possible names for a prefix
598 my ( $c, @prefixes ) = @_;
599 my $appclass = ref $c || $c;
601 my $filter = "^${appclass}::(" . join( '|', @prefixes ) . ')::';
603 my @names = map { s{$filter}{}; $_; }
604 $c->_comp_names_search_prefixes( undef, @prefixes );
609 # Filter a component before returning by calling ACCEPT_CONTEXT if available
610 sub _filter_component {
611 my ( $c, $comp, @args ) = @_;
613 if ( eval { $comp->can('ACCEPT_CONTEXT'); } ) {
614 return $comp->ACCEPT_CONTEXT( $c, @args );
620 =head2 COMPONENT ACCESSORS
622 =head2 $c->controller($name)
624 Gets a L<Catalyst::Controller> instance by name.
626 $c->controller('Foo')->do_stuff;
628 If the name is omitted, will return the controller for the dispatched
631 If you want to search for controllers, pass in a regexp as the argument.
633 # find all controllers that start with Foo
634 my @foo_controllers = $c->controller(qr{^Foo});
640 my ( $c, $name, @args ) = @_;
643 my @result = $c->_comp_search_prefixes( $name, qw/Controller C/ );
644 return map { $c->_filter_component( $_, @args ) } @result if ref $name;
645 return $c->_filter_component( $result[ 0 ], @args );
648 return $c->component( $c->action->class );
651 =head2 $c->model($name)
653 Gets a L<Catalyst::Model> instance by name.
655 $c->model('Foo')->do_stuff;
657 Any extra arguments are directly passed to ACCEPT_CONTEXT.
659 If the name is omitted, it will look for
660 - a model object in $c->stash->{current_model_instance}, then
661 - a model name in $c->stash->{current_model}, then
662 - a config setting 'default_model', or
663 - check if there is only one model, and return it if that's the case.
665 If you want to search for models, pass in a regexp as the argument.
667 # find all models that start with Foo
668 my @foo_models = $c->model(qr{^Foo});
673 my ( $c, $name, @args ) = @_;
674 my $appclass = ref($c) || $c;
676 my @result = $c->_comp_search_prefixes( $name, qw/Model M/ );
677 return map { $c->_filter_component( $_, @args ) } @result if ref $name;
678 return $c->_filter_component( $result[ 0 ], @args );
682 return $c->stash->{current_model_instance}
683 if $c->stash->{current_model_instance};
684 return $c->model( $c->stash->{current_model} )
685 if $c->stash->{current_model};
687 return $c->model( $appclass->config->{default_model} )
688 if $appclass->config->{default_model};
690 my( $comp, $rest ) = $c->_comp_search_prefixes( undef, qw/Model M/);
693 $c->log->warn( Carp::shortmess('Calling $c->model() will return a random model unless you specify one of:') );
694 $c->log->warn( '* $c->config(default_model => "the name of the default model to use")' );
695 $c->log->warn( '* $c->stash->{current_model} # the name of the model to use for this request' );
696 $c->log->warn( '* $c->stash->{current_model_instance} # the instance of the model to use for this request' );
697 $c->log->warn( 'NB: in version 5.81, the "random" behavior will not work at all.' );
700 return $c->_filter_component( $comp );
704 =head2 $c->view($name)
706 Gets a L<Catalyst::View> instance by name.
708 $c->view('Foo')->do_stuff;
710 Any extra arguments are directly passed to ACCEPT_CONTEXT.
712 If the name is omitted, it will look for
713 - a view object in $c->stash->{current_view_instance}, then
714 - a view name in $c->stash->{current_view}, then
715 - a config setting 'default_view', or
716 - check if there is only one view, and return it if that's the case.
718 If you want to search for views, pass in a regexp as the argument.
720 # find all views that start with Foo
721 my @foo_views = $c->view(qr{^Foo});
726 my ( $c, $name, @args ) = @_;
728 my $appclass = ref($c) || $c;
730 my @result = $c->_comp_search_prefixes( $name, qw/View V/ );
731 return map { $c->_filter_component( $_, @args ) } @result if ref $name;
732 return $c->_filter_component( $result[ 0 ], @args );
736 return $c->stash->{current_view_instance}
737 if $c->stash->{current_view_instance};
738 return $c->view( $c->stash->{current_view} )
739 if $c->stash->{current_view};
741 return $c->view( $appclass->config->{default_view} )
742 if $appclass->config->{default_view};
744 my( $comp, $rest ) = $c->_comp_search_prefixes( undef, qw/View V/);
747 $c->log->warn( 'Calling $c->view() will return a random view unless you specify one of:' );
748 $c->log->warn( '* $c->config(default_view => "the name of the default view to use")' );
749 $c->log->warn( '* $c->stash->{current_view} # the name of the view to use for this request' );
750 $c->log->warn( '* $c->stash->{current_view_instance} # the instance of the view to use for this request' );
751 $c->log->warn( 'NB: in version 5.81, the "random" behavior will not work at all.' );
754 return $c->_filter_component( $comp );
757 =head2 $c->controllers
759 Returns the available names which can be passed to $c->controller
765 return $c->_comp_names(qw/Controller C/);
770 Returns the available names which can be passed to $c->model
776 return $c->_comp_names(qw/Model M/);
782 Returns the available names which can be passed to $c->view
788 return $c->_comp_names(qw/View V/);
791 =head2 $c->comp($name)
793 =head2 $c->component($name)
795 Gets a component object by name. This method is not recommended,
796 unless you want to get a specific component by full
797 class. C<< $c->controller >>, C<< $c->model >>, and C<< $c->view >>
798 should be used instead.
800 If C<$name> is a regexp, a list of components matched against the full
801 component name will be returned.
803 If Catalyst can't find a component by name, it will fallback to regex
804 matching by default. To disable this behaviour set
805 disable_component_resolution_regex_fallback to a true value.
807 __PACKAGE__->config( disable_component_resolution_regex_fallback => 1 );
812 my ( $c, $name, @args ) = @_;
815 my $comps = $c->components;
818 # is it the exact name?
819 return $c->_filter_component( $comps->{ $name }, @args )
820 if exists $comps->{ $name };
822 # perhaps we just omitted "MyApp"?
823 my $composed = ( ref $c || $c ) . "::${name}";
824 return $c->_filter_component( $comps->{ $composed }, @args )
825 if exists $comps->{ $composed };
827 # search all of the models, views and controllers
828 my( $comp ) = $c->_comp_search_prefixes( $name, qw/Model M Controller C View V/ );
829 return $c->_filter_component( $comp, @args ) if $comp;
832 # This is here so $c->comp( '::M::' ) works
833 my $query = ref $name ? $name : qr{$name}i;
835 my @result = grep { m{$query} } keys %{ $c->components };
836 return map { $c->_filter_component( $_, @args ) } @result if ref $name;
839 $c->log->warn( Carp::shortmess(qq(Found results for "${name}" using regexp fallback)) );
840 $c->log->warn( 'Relying on the regexp fallback behavior for component resolution' );
841 $c->log->warn( 'is unreliable and unsafe. You have been warned' );
842 return $c->_filter_component( $result[ 0 ], @args );
845 # I would expect to return an empty list here, but that breaks back-compat
849 return sort keys %{ $c->components };
852 =head2 CLASS DATA AND HELPER CLASSES
856 Returns or takes a hashref containing the application's configuration.
858 __PACKAGE__->config( { db => 'dsn:SQLite:foo.db' } );
860 You can also use a C<YAML>, C<XML> or L<Config::General> config file
861 like C<myapp.conf> in your applications home directory. See
862 L<Catalyst::Plugin::ConfigLoader>.
864 =head3 Cascading configuration
866 The config method is present on all Catalyst components, and configuration
867 will be merged when an application is started. Configuration loaded with
868 L<Catalyst::Plugin::ConfigLoader> takes precedence over other configuration,
869 followed by configuration in your top level C<MyApp> class. These two
870 configurations are merged, and then configuration data whose hash key matches a
871 component name is merged with configuration for that component.
873 The configuration for a component is then passed to the C<new> method when a
874 component is constructed.
878 MyApp->config({ 'Model::Foo' => { bar => 'baz', overrides => 'me' } });
879 MyApp::Model::Foo->config({ quux => 'frob', 'overrides => 'this' });
881 will mean that C<MyApp::Model::Foo> receives the following data when
884 MyApp::Model::Foo->new({
892 around config => sub {
896 croak('Setting config after setup has been run is not allowed.')
897 if ( @_ and $c->setup_finished );
904 Returns the logging object instance. Unless it is already set, Catalyst
905 sets this up with a L<Catalyst::Log> object. To use your own log class,
906 set the logger with the C<< __PACKAGE__->log >> method prior to calling
907 C<< __PACKAGE__->setup >>.
909 __PACKAGE__->log( MyLogger->new );
914 $c->log->info( 'Now logging with my own logger!' );
916 Your log class should implement the methods described in
922 Returns 1 if debug mode is enabled, 0 otherwise.
924 You can enable debug mode in several ways:
928 =item By calling myapp_server.pl with the -d flag
930 =item With the environment variables MYAPP_DEBUG, or CATALYST_DEBUG
932 =item The -Debug option in your MyApp.pm
934 =item By declaring C<sub debug { 1 }> in your MyApp.pm.
938 Calling C<< $c->debug(1) >> has no effect.
944 =head2 $c->dispatcher
946 Returns the dispatcher instance. See L<Catalyst::Dispatcher>.
950 Returns the engine instance. See L<Catalyst::Engine>.
953 =head2 UTILITY METHODS
955 =head2 $c->path_to(@path)
957 Merges C<@path> with C<< $c->config->{home} >> and returns a
958 L<Path::Class::Dir> object. Note you can usually use this object as
959 a filename, but sometimes you will have to explicitly stringify it
960 yourself by calling the C<< ->stringify >> method.
964 $c->path_to( 'db', 'sqlite.db' );
969 my ( $c, @path ) = @_;
970 my $path = Path::Class::Dir->new( $c->config->{home}, @path );
971 if ( -d $path ) { return $path }
972 else { return Path::Class::File->new( $c->config->{home}, @path ) }
975 =head2 $c->plugin( $name, $class, @args )
977 Helper method for plugins. It creates a class data accessor/mutator and
978 loads and instantiates the given class.
980 MyApp->plugin( 'prototype', 'HTML::Prototype' );
982 $c->prototype->define_javascript_functions;
984 B<Note:> This method of adding plugins is deprecated. The ability
985 to add plugins like this B<will be removed> in a Catalyst 5.81.
986 Please do not use this functionality in new code.
991 my ( $class, $name, $plugin, @args ) = @_;
993 # See block comment in t/unit_core_plugin.t
994 $class->log->warn(qq/Adding plugin using the ->plugin method is deprecated, and will be removed in Catalyst 5.81/);
996 $class->_register_plugin( $plugin, 1 );
998 eval { $plugin->import };
999 $class->mk_classdata($name);
1001 eval { $obj = $plugin->new(@args) };
1004 Catalyst::Exception->throw( message =>
1005 qq/Couldn't instantiate instant plugin "$plugin", "$@"/ );
1008 $class->$name($obj);
1009 $class->log->debug(qq/Initialized instant plugin "$plugin" as "$name"/)
1015 Initializes the dispatcher and engine, loads any plugins, and loads the
1016 model, view, and controller components. You may also specify an array
1017 of plugins to load here, if you choose to not load them in the C<use
1021 MyApp->setup( qw/-Debug/ );
1026 my ( $class, @arguments ) = @_;
1027 croak('Running setup more than once')
1028 if ( $class->setup_finished );
1030 unless ( $class->isa('Catalyst') ) {
1032 Catalyst::Exception->throw(
1033 message => qq/'$class' does not inherit from Catalyst/ );
1036 if ( $class->arguments ) {
1037 @arguments = ( @arguments, @{ $class->arguments } );
1043 foreach (@arguments) {
1047 ( $flags->{log} ) ? 'debug,' . $flags->{log} : 'debug';
1049 elsif (/^-(\w+)=?(.*)$/) {
1050 $flags->{ lc $1 } = $2;
1053 push @{ $flags->{plugins} }, $_;
1057 $class->setup_home( delete $flags->{home} );
1059 $class->setup_log( delete $flags->{log} );
1060 $class->setup_plugins( delete $flags->{plugins} );
1061 $class->setup_dispatcher( delete $flags->{dispatcher} );
1062 $class->setup_engine( delete $flags->{engine} );
1063 $class->setup_stats( delete $flags->{stats} );
1065 for my $flag ( sort keys %{$flags} ) {
1067 if ( my $code = $class->can( 'setup_' . $flag ) ) {
1068 &$code( $class, delete $flags->{$flag} );
1071 $class->log->warn(qq/Unknown flag "$flag"/);
1075 eval { require Catalyst::Devel; };
1076 if( !$@ && $ENV{CATALYST_SCRIPT_GEN} && ( $ENV{CATALYST_SCRIPT_GEN} < $Catalyst::Devel::CATALYST_SCRIPT_GEN ) ) {
1077 $class->log->warn(<<"EOF");
1078 You are running an old script!
1080 Please update by running (this will overwrite existing files):
1081 catalyst.pl -force -scripts $class
1083 or (this will not overwrite existing files):
1084 catalyst.pl -scripts $class
1089 if ( $class->debug ) {
1090 my @plugins = map { "$_ " . ( $_->VERSION || '' ) } $class->registered_plugins;
1093 my $column_width = Catalyst::Utils::term_width() - 6;
1094 my $t = Text::SimpleTable->new($column_width);
1095 $t->row($_) for @plugins;
1096 $class->log->debug( "Loaded plugins:\n" . $t->draw . "\n" );
1099 my $dispatcher = $class->dispatcher;
1100 my $engine = $class->engine;
1101 my $home = $class->config->{home};
1103 $class->log->debug(sprintf(q/Loaded dispatcher "%s"/, blessed($dispatcher)));
1104 $class->log->debug(sprintf(q/Loaded engine "%s"/, blessed($engine)));
1108 ? $class->log->debug(qq/Found home "$home"/)
1109 : $class->log->debug(qq/Home "$home" doesn't exist/)
1110 : $class->log->debug(q/Couldn't find home/);
1113 # Call plugins setup, this is stupid and evil.
1114 # Also screws C3 badly on 5.10, hack to avoid.
1116 no warnings qw/redefine/;
1117 local *setup = sub { };
1118 $class->setup unless $Catalyst::__AM_RESTARTING;
1121 # Initialize our data structure
1122 $class->components( {} );
1124 $class->setup_components;
1126 if ( $class->debug ) {
1127 my $column_width = Catalyst::Utils::term_width() - 8 - 9;
1128 my $t = Text::SimpleTable->new( [ $column_width, 'Class' ], [ 8, 'Type' ] );
1129 for my $comp ( sort keys %{ $class->components } ) {
1130 my $type = ref $class->components->{$comp} ? 'instance' : 'class';
1131 $t->row( $comp, $type );
1133 $class->log->debug( "Loaded components:\n" . $t->draw . "\n" )
1134 if ( keys %{ $class->components } );
1137 # Add our self to components, since we are also a component
1138 if( $class->isa('Catalyst::Controller') ){
1139 $class->components->{$class} = $class;
1142 $class->setup_actions;
1144 if ( $class->debug ) {
1145 my $name = $class->config->{name} || 'Application';
1146 $class->log->info("$name powered by Catalyst $Catalyst::VERSION");
1149 # Make sure that the application class becomes immutable at this point,
1150 B::Hooks::EndOfScope::on_scope_end {
1152 my $meta = Class::MOP::get_metaclass_by_name($class);
1155 && ! { $meta->immutable_options }->{replace_constructor}
1157 $class->isa('Class::Accessor::Fast')
1158 || $class->isa('Class::Accessor')
1161 warn "You made your application class ($class) immutable, "
1162 . "but did not inline the\nconstructor. "
1163 . "This will break catalyst, as your app \@ISA "
1164 . "Class::Accessor(::Fast)?\nPlease pass "
1165 . "(replace_constructor => 1)\nwhen making your class immutable.\n";
1167 $meta->make_immutable(
1168 replace_constructor => 1,
1169 ) unless $meta->is_immutable;
1172 $class->setup_finalize;
1173 # Should be the last thing we do so that user things hooking
1174 # setup_finalize can log..
1175 $class->log->_flush() if $class->log->can('_flush');
1176 return 1; # Explicit return true as people have __PACKAGE__->setup as the last thing in their class. HATE.
1180 =head2 $app->setup_finalize
1182 A hook to attach modifiers to.
1183 Using C<< after setup => sub{}; >> doesn't work, because of quirky things done for plugin setup.
1184 Also better than C< setup_finished(); >, as that is a getter method.
1186 sub setup_finalize {
1190 ## do stuff, i.e., determine a primary key column for sessions stored in a DB
1192 $app->next::method(@_);
1199 sub setup_finalize {
1201 $class->setup_finished(1);
1204 =head2 $c->uri_for( $path?, @args?, \%query_values? )
1206 =head2 $c->uri_for( $action, \@captures?, @args?, \%query_values? )
1208 Constructs an absolute L<URI> object based on the application root, the
1209 provided path, and the additional arguments and query parameters provided.
1210 When used as a string, provides a textual URI.
1212 If no arguments are provided, the URI for the current action is returned.
1213 To return the current action and also provide @args, use
1214 C<< $c->uri_for( $c->action, @args ) >>.
1216 If the first argument is a string, it is taken as a public URI path relative
1217 to C<< $c->namespace >> (if it doesn't begin with a forward slash) or
1218 relative to the application root (if it does). It is then merged with
1219 C<< $c->request->base >>; any C<@args> are appended as additional path
1220 components; and any C<%query_values> are appended as C<?foo=bar> parameters.
1222 If the first argument is a L<Catalyst::Action> it represents an action which
1223 will have its path resolved using C<< $c->dispatcher->uri_for_action >>. The
1224 optional C<\@captures> argument (an arrayref) allows passing the captured
1225 variables that are needed to fill in the paths of Chained and Regex actions;
1226 once the path is resolved, C<uri_for> continues as though a path was
1227 provided, appending any arguments or parameters and creating an absolute
1230 The captures for the current request can be found in
1231 C<< $c->request->captures >>, and actions can be resolved using
1232 C<< Catalyst::Controller->action_for($name) >>. If you have a private action
1233 path, use C<< $c->uri_for_action >> instead.
1235 # Equivalent to $c->req->uri
1236 $c->uri_for($c->action, $c->req->captures,
1237 @{ $c->req->args }, $c->req->params);
1239 # For the Foo action in the Bar controller
1240 $c->uri_for($c->controller('Bar')->action_for('Foo'));
1242 # Path to a static resource
1243 $c->uri_for('/static/images/logo.png');
1248 my ( $c, $path, @args ) = @_;
1250 if (blessed($path) && $path->isa('Catalyst::Controller')) {
1251 $path = $path->path_prefix;
1256 if ( blessed($path) ) { # action object
1257 my $captures = [ map { s|/|%2F|; $_; }
1258 ( scalar @args && ref $args[0] eq 'ARRAY'
1262 $path = $c->dispatcher->uri_for_action($action, $captures);
1263 if (not defined $path) {
1264 $c->log->debug(qq/Can't find uri_for action '$action' @$captures/)
1268 $path = '/' if $path eq '';
1271 undef($path) if (defined $path && $path eq '');
1274 ( scalar @args && ref $args[$#args] eq 'HASH' ? pop @args : {} );
1276 carp "uri_for called with undef argument" if grep { ! defined $_ } @args;
1277 s/([^$URI::uric])/$URI::Escape::escapes{$1}/go for @args;
1280 unshift(@args, $path);
1282 unless (defined $path && $path =~ s!^/!!) { # in-place strip
1283 my $namespace = $c->namespace;
1284 if (defined $path) { # cheesy hack to handle path '../foo'
1285 $namespace =~ s{(?:^|/)[^/]+$}{} while $args[0] =~ s{^\.\./}{};
1287 unshift(@args, $namespace || '');
1290 # join args with '/', or a blank string
1291 my $args = join('/', grep { defined($_) } @args);
1292 $args =~ s/\?/%3F/g; # STUPID STUPID SPECIAL CASE
1294 my $base = $c->req->base;
1295 my $class = ref($base);
1296 $base =~ s{(?<!/)$}{/};
1300 if (my @keys = keys %$params) {
1301 # somewhat lifted from URI::_query's query_form
1302 $query = '?'.join('&', map {
1303 my $val = $params->{$_};
1304 s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go;
1307 $val = '' unless defined $val;
1310 utf8::encode( $param ) if utf8::is_utf8($param);
1311 # using the URI::Escape pattern here so utf8 chars survive
1312 $param =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
1314 "${key}=$param"; } ( ref $val eq 'ARRAY' ? @$val : $val ));
1318 my $res = bless(\"${base}${args}${query}", $class);
1322 =head2 $c->uri_for_action( $path, \@captures?, @args?, \%query_values? )
1324 =head2 $c->uri_for_action( $action, \@captures?, @args?, \%query_values? )
1330 A private path to the Catalyst action you want to create a URI for.
1332 This is a shortcut for calling C<< $c->dispatcher->get_action_by_path($path)
1333 >> and passing the resulting C<$action> and the remaining arguments to C<<
1336 You can also pass in a Catalyst::Action object, in which case it is passed to
1343 sub uri_for_action {
1344 my ( $c, $path, @args ) = @_;
1345 my $action = blessed($path)
1347 : $c->dispatcher->get_action_by_path($path);
1348 unless (defined $action) {
1349 croak "Can't find action for path '$path'";
1351 return $c->uri_for( $action, @args );
1354 =head2 $c->welcome_message
1356 Returns the Catalyst welcome HTML page.
1360 sub welcome_message {
1362 my $name = $c->config->{name};
1363 my $logo = $c->uri_for('/static/images/catalyst_logo.png');
1364 my $prefix = Catalyst::Utils::appprefix( ref $c );
1365 $c->response->content_type('text/html; charset=utf-8');
1367 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
1368 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
1369 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
1371 <meta http-equiv="Content-Language" content="en" />
1372 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
1373 <title>$name on Catalyst $VERSION</title>
1374 <style type="text/css">
1377 background-color: #eee;
1384 margin-bottom: 10px;
1386 background-color: #ccc;
1387 border: 1px solid #aaa;
1392 font-family: verdana, tahoma, sans-serif;
1395 font-family: verdana, tahoma, sans-serif;
1398 text-decoration: none;
1400 border-bottom: 1px dotted #bbb;
1402 :link:hover, :visited:hover {
1415 background-color: #fff;
1416 border: 1px solid #aaa;
1420 font-weight: normal;
1442 <h1><span id="appname">$name</span> on <a href="http://catalyst.perl.org">Catalyst</a>
1447 <img src="$logo" alt="Catalyst Logo" />
1449 <p>Welcome to the world of Catalyst.
1450 This <a href="http://en.wikipedia.org/wiki/MVC">MVC</a>
1451 framework will make web development something you had
1452 never expected it to be: Fun, rewarding, and quick.</p>
1453 <h2>What to do now?</h2>
1454 <p>That really depends on what <b>you</b> want to do.
1455 We do, however, provide you with a few starting points.</p>
1456 <p>If you want to jump right into web development with Catalyst
1457 you might want to start with a tutorial.</p>
1458 <pre>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Tutorial.pod">Catalyst::Manual::Tutorial</a></code>
1460 <p>Afterwards you can go on to check out a more complete look at our features.</p>
1462 <code>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Intro.pod">Catalyst::Manual::Intro</a>
1463 <!-- Something else should go here, but the Catalyst::Manual link seems unhelpful -->
1465 <h2>What to do next?</h2>
1466 <p>Next it's time to write an actual application. Use the
1467 helper scripts to generate <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AController%3A%3A&mode=all">controllers</a>,
1468 <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AModel%3A%3A&mode=all">models</a>, and
1469 <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AView%3A%3A&mode=all">views</a>;
1470 they can save you a lot of work.</p>
1471 <pre><code>script/${prefix}_create.pl -help</code></pre>
1472 <p>Also, be sure to check out the vast and growing
1473 collection of <a href="http://search.cpan.org/search?query=Catalyst">plugins for Catalyst on CPAN</a>;
1474 you are likely to find what you need there.
1478 <p>Catalyst has a very active community. Here are the main places to
1479 get in touch with us.</p>
1482 <a href="http://dev.catalyst.perl.org">Wiki</a>
1485 <a href="http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst">Mailing-List</a>
1488 <a href="irc://irc.perl.org/catalyst">IRC channel #catalyst on irc.perl.org</a>
1491 <h2>In conclusion</h2>
1492 <p>The Catalyst team hopes you will enjoy using Catalyst as much
1493 as we enjoyed making it. Please contact us if you have ideas
1494 for improvement or other feedback.</p>
1502 =head1 INTERNAL METHODS
1504 These methods are not meant to be used by end users.
1506 =head2 $c->components
1508 Returns a hash of components.
1510 =head2 $c->context_class
1512 Returns or sets the context class.
1516 Returns a hashref containing coderefs and execution counts (needed for
1517 deep recursion detection).
1521 Returns the number of actions on the current internal execution stack.
1525 Dispatches a request to actions.
1529 sub dispatch { my $c = shift; $c->dispatcher->dispatch( $c, @_ ) }
1531 =head2 $c->dispatcher_class
1533 Returns or sets the dispatcher class.
1535 =head2 $c->dump_these
1537 Returns a list of 2-element array references (name, structure) pairs
1538 that will be dumped on the error page in debug mode.
1544 [ Request => $c->req ],
1545 [ Response => $c->res ],
1546 [ Stash => $c->stash ],
1547 [ Config => $c->config ];
1550 =head2 $c->engine_class
1552 Returns or sets the engine class.
1554 =head2 $c->execute( $class, $coderef )
1556 Execute a coderef in given class and catch exceptions. Errors are available
1562 my ( $c, $class, $code ) = @_;
1563 $class = $c->component($class) || $class;
1566 if ( $c->depth >= $RECURSION ) {
1567 my $action = $code->reverse();
1568 $action = "/$action" unless $action =~ /->/;
1569 my $error = qq/Deep recursion detected calling "${action}"/;
1570 $c->log->error($error);
1576 my $stats_info = $c->_stats_start_execute( $code ) if $c->use_stats;
1578 push( @{ $c->stack }, $code );
1580 no warnings 'recursion';
1581 eval { $c->state( $code->execute( $class, $c, @{ $c->req->args } ) || 0 ) };
1583 $c->_stats_finish_execute( $stats_info ) if $c->use_stats and $stats_info;
1585 my $last = pop( @{ $c->stack } );
1587 if ( my $error = $@ ) {
1588 if ( blessed($error) and $error->isa('Catalyst::Exception::Detach') ) {
1589 $error->rethrow if $c->depth > 1;
1591 elsif ( blessed($error) and $error->isa('Catalyst::Exception::Go') ) {
1592 $error->rethrow if $c->depth > 0;
1595 unless ( ref $error ) {
1596 no warnings 'uninitialized';
1598 my $class = $last->class;
1599 my $name = $last->name;
1600 $error = qq/Caught exception in $class->$name "$error"/;
1609 sub _stats_start_execute {
1610 my ( $c, $code ) = @_;
1611 my $appclass = ref($c) || $c;
1612 return if ( ( $code->name =~ /^_.*/ )
1613 && ( !$appclass->config->{show_internal_actions} ) );
1615 my $action_name = $code->reverse();
1616 $c->counter->{$action_name}++;
1618 my $action = $action_name;
1619 $action = "/$action" unless $action =~ /->/;
1621 # determine if the call was the result of a forward
1622 # this is done by walking up the call stack and looking for a calling
1623 # sub of Catalyst::forward before the eval
1625 for my $index ( 2 .. 11 ) {
1627 if ( ( caller($index) )[0] eq 'Catalyst'
1628 && ( caller($index) )[3] eq '(eval)' );
1630 if ( ( caller($index) )[3] =~ /forward$/ ) {
1631 $callsub = ( caller($index) )[3];
1632 $action = "-> $action";
1637 my $uid = $action_name . $c->counter->{$action_name};
1639 # is this a root-level call or a forwarded call?
1640 if ( $callsub =~ /forward$/ ) {
1641 my $parent = $c->stack->[-1];
1643 # forward, locate the caller
1644 if ( exists $c->counter->{"$parent"} ) {
1647 parent => "$parent" . $c->counter->{"$parent"},
1653 # forward with no caller may come from a plugin
1672 sub _stats_finish_execute {
1673 my ( $c, $info ) = @_;
1674 $c->stats->profile( end => $info );
1679 Finalizes the request.
1686 for my $error ( @{ $c->error } ) {
1687 $c->log->error($error);
1690 # Allow engine to handle finalize flow (for POE)
1691 my $engine = $c->engine;
1692 if ( my $code = $engine->can('finalize') ) {
1697 $c->finalize_uploads;
1700 if ( $#{ $c->error } >= 0 ) {
1704 $c->finalize_headers;
1707 if ( $c->request->method eq 'HEAD' ) {
1708 $c->response->body('');
1714 if ($c->use_stats) {
1715 my $elapsed = sprintf '%f', $c->stats->elapsed;
1716 my $av = $elapsed == 0 ? '??' : sprintf '%.3f', 1 / $elapsed;
1718 "Request took ${elapsed}s ($av/s)\n" . $c->stats->report . "\n" );
1721 return $c->response->status;
1724 =head2 $c->finalize_body
1730 sub finalize_body { my $c = shift; $c->engine->finalize_body( $c, @_ ) }
1732 =head2 $c->finalize_cookies
1738 sub finalize_cookies { my $c = shift; $c->engine->finalize_cookies( $c, @_ ) }
1740 =head2 $c->finalize_error
1746 sub finalize_error { my $c = shift; $c->engine->finalize_error( $c, @_ ) }
1748 =head2 $c->finalize_headers
1754 sub finalize_headers {
1757 my $response = $c->response; #accessor calls can add up?
1759 # Check if we already finalized headers
1760 return if $response->finalized_headers;
1763 if ( my $location = $response->redirect ) {
1764 $c->log->debug(qq/Redirecting to "$location"/) if $c->debug;
1765 $response->header( Location => $location );
1767 if ( !$response->has_body ) {
1768 # Add a default body if none is already present
1770 qq{<html><body><p>This item has moved <a href="$location">here</a>.</p></body></html>}
1776 if ( $response->body && !$response->content_length ) {
1778 # get the length from a filehandle
1779 if ( blessed( $response->body ) && $response->body->can('read') )
1781 my $stat = stat $response->body;
1782 if ( $stat && $stat->size > 0 ) {
1783 $response->content_length( $stat->size );
1786 $c->log->warn('Serving filehandle without a content-length');
1790 # everything should be bytes at this point, but just in case
1791 $response->content_length( bytes::length( $response->body ) );
1796 if ( $response->status =~ /^(1\d\d|[23]04)$/ ) {
1797 $response->headers->remove_header("Content-Length");
1798 $response->body('');
1801 $c->finalize_cookies;
1803 $c->engine->finalize_headers( $c, @_ );
1806 $response->finalized_headers(1);
1809 =head2 $c->finalize_output
1811 An alias for finalize_body.
1813 =head2 $c->finalize_read
1815 Finalizes the input after reading is complete.
1819 sub finalize_read { my $c = shift; $c->engine->finalize_read( $c, @_ ) }
1821 =head2 $c->finalize_uploads
1823 Finalizes uploads. Cleans up any temporary files.
1827 sub finalize_uploads { my $c = shift; $c->engine->finalize_uploads( $c, @_ ) }
1829 =head2 $c->get_action( $action, $namespace )
1831 Gets an action in a given namespace.
1835 sub get_action { my $c = shift; $c->dispatcher->get_action(@_) }
1837 =head2 $c->get_actions( $action, $namespace )
1839 Gets all actions of a given name in a namespace and all parent
1844 sub get_actions { my $c = shift; $c->dispatcher->get_actions( $c, @_ ) }
1846 =head2 $c->handle_request( $class, @arguments )
1848 Called to handle each HTTP request.
1852 sub handle_request {
1853 my ( $class, @arguments ) = @_;
1855 # Always expect worst case!
1858 if ($class->debug) {
1859 my $secs = time - $START || 1;
1860 my $av = sprintf '%.3f', $COUNT / $secs;
1861 my $time = localtime time;
1862 $class->log->info("*** Request $COUNT ($av/s) [$$] [$time] ***");
1865 my $c = $class->prepare(@arguments);
1867 $status = $c->finalize;
1870 if ( my $error = $@ ) {
1872 $class->log->error(qq/Caught exception in engine "$error"/);
1877 if(my $coderef = $class->log->can('_flush')){
1878 $class->log->$coderef();
1883 =head2 $c->prepare( @arguments )
1885 Creates a Catalyst context from an engine-specific request (Apache, CGI,
1891 my ( $class, @arguments ) = @_;
1894 # After the app/ctxt split, this should become an attribute based on something passed
1895 # into the application.
1896 $class->context_class( ref $class || $class ) unless $class->context_class;
1898 my $c = $class->context_class->new({});
1900 # For on-demand data
1901 $c->request->_context($c);
1902 $c->response->_context($c);
1904 #surely this is not the most efficient way to do things...
1905 $c->stats($class->stats_class->new)->enable($c->use_stats);
1907 $c->res->headers->header( 'X-Catalyst' => $Catalyst::VERSION );
1910 #XXX reuse coderef from can
1911 # Allow engine to direct the prepare flow (for POE)
1912 if ( $c->engine->can('prepare') ) {
1913 $c->engine->prepare( $c, @arguments );
1916 $c->prepare_request(@arguments);
1917 $c->prepare_connection;
1918 $c->prepare_query_parameters;
1919 $c->prepare_headers;
1920 $c->prepare_cookies;
1923 # Prepare the body for reading, either by prepare_body
1924 # or the user, if they are using $c->read
1927 # Parse the body unless the user wants it on-demand
1928 unless ( ref($c)->config->{parse_on_demand} ) {
1933 my $method = $c->req->method || '';
1934 my $path = $c->req->path;
1935 $path = '/' unless length $path;
1936 my $address = $c->req->address || '';
1938 $c->log->debug(qq/"$method" request for "$path" from "$address"/)
1946 =head2 $c->prepare_action
1948 Prepares action. See L<Catalyst::Dispatcher>.
1952 sub prepare_action { my $c = shift; $c->dispatcher->prepare_action( $c, @_ ) }
1954 =head2 $c->prepare_body
1956 Prepares message body.
1963 return if $c->request->_has_body;
1965 # Initialize on-demand data
1966 $c->engine->prepare_body( $c, @_ );
1967 $c->prepare_parameters;
1968 $c->prepare_uploads;
1970 if ( $c->debug && keys %{ $c->req->body_parameters } ) {
1971 my $t = Text::SimpleTable->new( [ 35, 'Parameter' ], [ 36, 'Value' ] );
1972 for my $key ( sort keys %{ $c->req->body_parameters } ) {
1973 my $param = $c->req->body_parameters->{$key};
1974 my $value = defined($param) ? $param : '';
1976 ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
1978 $c->log->debug( "Body Parameters are:\n" . $t->draw );
1982 =head2 $c->prepare_body_chunk( $chunk )
1984 Prepares a chunk of data before sending it to L<HTTP::Body>.
1986 See L<Catalyst::Engine>.
1990 sub prepare_body_chunk {
1992 $c->engine->prepare_body_chunk( $c, @_ );
1995 =head2 $c->prepare_body_parameters
1997 Prepares body parameters.
2001 sub prepare_body_parameters {
2003 $c->engine->prepare_body_parameters( $c, @_ );
2006 =head2 $c->prepare_connection
2008 Prepares connection.
2012 sub prepare_connection {
2014 $c->engine->prepare_connection( $c, @_ );
2017 =head2 $c->prepare_cookies
2023 sub prepare_cookies { my $c = shift; $c->engine->prepare_cookies( $c, @_ ) }
2025 =head2 $c->prepare_headers
2031 sub prepare_headers { my $c = shift; $c->engine->prepare_headers( $c, @_ ) }
2033 =head2 $c->prepare_parameters
2035 Prepares parameters.
2039 sub prepare_parameters {
2041 $c->prepare_body_parameters;
2042 $c->engine->prepare_parameters( $c, @_ );
2045 =head2 $c->prepare_path
2047 Prepares path and base.
2051 sub prepare_path { my $c = shift; $c->engine->prepare_path( $c, @_ ) }
2053 =head2 $c->prepare_query_parameters
2055 Prepares query parameters.
2059 sub prepare_query_parameters {
2062 $c->engine->prepare_query_parameters( $c, @_ );
2064 if ( $c->debug && keys %{ $c->request->query_parameters } ) {
2065 my $t = Text::SimpleTable->new( [ 35, 'Parameter' ], [ 36, 'Value' ] );
2066 for my $key ( sort keys %{ $c->req->query_parameters } ) {
2067 my $param = $c->req->query_parameters->{$key};
2068 my $value = defined($param) ? $param : '';
2070 ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
2072 $c->log->debug( "Query Parameters are:\n" . $t->draw );
2076 =head2 $c->prepare_read
2078 Prepares the input for reading.
2082 sub prepare_read { my $c = shift; $c->engine->prepare_read( $c, @_ ) }
2084 =head2 $c->prepare_request
2086 Prepares the engine request.
2090 sub prepare_request { my $c = shift; $c->engine->prepare_request( $c, @_ ) }
2092 =head2 $c->prepare_uploads
2098 sub prepare_uploads {
2101 $c->engine->prepare_uploads( $c, @_ );
2103 if ( $c->debug && keys %{ $c->request->uploads } ) {
2104 my $t = Text::SimpleTable->new(
2105 [ 12, 'Parameter' ],
2110 for my $key ( sort keys %{ $c->request->uploads } ) {
2111 my $upload = $c->request->uploads->{$key};
2112 for my $u ( ref $upload eq 'ARRAY' ? @{$upload} : ($upload) ) {
2113 $t->row( $key, $u->filename, $u->type, $u->size );
2116 $c->log->debug( "File Uploads are:\n" . $t->draw );
2120 =head2 $c->prepare_write
2122 Prepares the output for writing.
2126 sub prepare_write { my $c = shift; $c->engine->prepare_write( $c, @_ ) }
2128 =head2 $c->request_class
2130 Returns or sets the request class.
2132 =head2 $c->response_class
2134 Returns or sets the response class.
2136 =head2 $c->read( [$maxlength] )
2138 Reads a chunk of data from the request body. This method is designed to
2139 be used in a while loop, reading C<$maxlength> bytes on every call.
2140 C<$maxlength> defaults to the size of the request if not specified.
2142 You have to set C<< MyApp->config(parse_on_demand => 1) >> to use this
2145 Warning: If you use read(), Catalyst will not process the body,
2146 so you will not be able to access POST parameters or file uploads via
2147 $c->request. You must handle all body parsing yourself.
2151 sub read { my $c = shift; return $c->engine->read( $c, @_ ) }
2159 sub run { my $c = shift; return $c->engine->run( $c, @_ ) }
2161 =head2 $c->set_action( $action, $code, $namespace, $attrs )
2163 Sets an action in a given namespace.
2167 sub set_action { my $c = shift; $c->dispatcher->set_action( $c, @_ ) }
2169 =head2 $c->setup_actions($component)
2171 Sets up actions for a component.
2175 sub setup_actions { my $c = shift; $c->dispatcher->setup_actions( $c, @_ ) }
2177 =head2 $c->setup_components
2179 This method is called internally to set up the application's components.
2181 It finds modules by calling the L<locate_components> method, expands them to
2182 package names with the L<expand_component_module> method, and then installs
2183 each component into the application.
2185 The C<setup_components> config option is passed to both of the above methods.
2187 Installation of each component is performed by the L<setup_component> method,
2192 sub setup_components {
2195 my $config = $class->config->{ setup_components };
2197 my @comps = sort { length $a <=> length $b }
2198 $class->locate_components($config);
2199 my %comps = map { $_ => 1 } @comps;
2201 my $deprecatedcatalyst_component_names = grep { /::[CMV]::/ } @comps;
2202 $class->log->warn(qq{Your application is using the deprecated ::[MVC]:: type naming scheme.\n}.
2203 qq{Please switch your class names to ::Model::, ::View:: and ::Controller: as appropriate.\n}
2204 ) if $deprecatedcatalyst_component_names;
2206 for my $component ( @comps ) {
2208 # We pass ignore_loaded here so that overlay files for (e.g.)
2209 # Model::DBI::Schema sub-classes are loaded - if it's in @comps
2210 # we know M::P::O found a file on disk so this is safe
2212 Catalyst::Utils::ensure_class_loaded( $component, { ignore_loaded => 1 } );
2214 # Needs to be done as soon as the component is loaded, as loading a sub-component
2215 # (next time round the loop) can cause us to get the wrong metaclass..
2216 $class->_controller_init_base_classes($component);
2219 for my $component (@comps) {
2220 $class->components->{ $component } = $class->setup_component($component);
2221 for my $component ($class->expand_component_module( $component, $config )) {
2222 next if $comps{$component};
2223 $class->_controller_init_base_classes($component); # Also cover inner packages
2224 $class->components->{ $component } = $class->setup_component($component);
2229 =head2 $c->locate_components( $setup_component_config )
2231 This method is meant to provide a list of component modules that should be
2232 setup for the application. By default, it will use L<Module::Pluggable>.
2234 Specify a C<setup_components> config option to pass additional options directly
2235 to L<Module::Pluggable>. To add additional search paths, specify a key named
2236 C<search_extra> as an array reference. Items in the array beginning with C<::>
2237 will have the application class name prepended to them.
2241 sub locate_components {
2245 my @paths = qw( ::Controller ::C ::Model ::M ::View ::V );
2246 my $extra = delete $config->{ search_extra } || [];
2248 push @paths, @$extra;
2250 my $locator = Module::Pluggable::Object->new(
2251 search_path => [ map { s/^(?=::)/$class/; $_; } @paths ],
2255 my @comps = $locator->plugins;
2260 =head2 $c->expand_component_module( $component, $setup_component_config )
2262 Components found by C<locate_components> will be passed to this method, which
2263 is expected to return a list of component (package) names to be set up.
2267 sub expand_component_module {
2268 my ($class, $module) = @_;
2269 return Devel::InnerPackage::list_packages( $module );
2272 =head2 $c->setup_component
2276 # FIXME - Ugly, ugly hack to ensure the we force initialize non-moose base classes
2277 # nearest to Catalyst::Controller first, no matter what order stuff happens
2278 # to be loaded. There are TODO tests in Moose for this, see
2279 # f2391d17574eff81d911b97be15ea51080500003
2280 sub _controller_init_base_classes {
2281 my ($app_class, $component) = @_;
2282 return unless $component->isa('Catalyst::Controller');
2283 foreach my $class ( reverse @{ mro::get_linear_isa($component) } ) {
2284 Moose::Meta::Class->initialize( $class )
2285 unless find_meta($class);
2289 sub setup_component {
2290 my( $class, $component ) = @_;
2292 unless ( $component->can( 'COMPONENT' ) ) {
2296 my $suffix = Catalyst::Utils::class2classsuffix( $component );
2297 my $config = $class->config->{ $suffix } || {};
2298 # Stash catalyst_component_name in the config here, so that custom COMPONENT
2299 # methods also pass it. local to avoid pointlessly shitting in config
2300 # for the debug screen, as $component is already the key name.
2301 local $config->{catalyst_component_name} = $component;
2303 my $instance = eval { $component->COMPONENT( $class, $config ); };
2305 if ( my $error = $@ ) {
2307 Catalyst::Exception->throw(
2308 message => qq/Couldn't instantiate component "$component", "$error"/
2312 unless (blessed $instance) {
2313 my $metaclass = Moose::Util::find_meta($component);
2314 my $method_meta = $metaclass->find_method_by_name('COMPONENT');
2315 my $component_method_from = $method_meta->associated_metaclass->name;
2316 my $value = defined($instance) ? $instance : 'undef';
2317 Catalyst::Exception->throw(
2319 qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value (value was $value)./
2325 =head2 $c->setup_dispatcher
2331 sub setup_dispatcher {
2332 my ( $class, $dispatcher ) = @_;
2335 $dispatcher = 'Catalyst::Dispatcher::' . $dispatcher;
2338 if ( my $env = Catalyst::Utils::env_value( $class, 'DISPATCHER' ) ) {
2339 $dispatcher = 'Catalyst::Dispatcher::' . $env;
2342 unless ($dispatcher) {
2343 $dispatcher = $class->dispatcher_class;
2346 Class::MOP::load_class($dispatcher);
2348 # dispatcher instance
2349 $class->dispatcher( $dispatcher->new );
2352 =head2 $c->setup_engine
2359 my ( $class, $engine ) = @_;
2362 $engine = 'Catalyst::Engine::' . $engine;
2365 if ( my $env = Catalyst::Utils::env_value( $class, 'ENGINE' ) ) {
2366 $engine = 'Catalyst::Engine::' . $env;
2369 if ( $ENV{MOD_PERL} ) {
2370 my $meta = Class::MOP::get_metaclass_by_name($class);
2372 # create the apache method
2373 $meta->add_method('apache' => sub { shift->engine->apache });
2375 my ( $software, $version ) =
2376 $ENV{MOD_PERL} =~ /^(\S+)\/(\d+(?:[\.\_]\d+)+)/;
2379 $version =~ s/(\.[^.]+)\./$1/g;
2381 if ( $software eq 'mod_perl' ) {
2385 if ( $version >= 1.99922 ) {
2386 $engine = 'Catalyst::Engine::Apache2::MP20';
2389 elsif ( $version >= 1.9901 ) {
2390 $engine = 'Catalyst::Engine::Apache2::MP19';
2393 elsif ( $version >= 1.24 ) {
2394 $engine = 'Catalyst::Engine::Apache::MP13';
2398 Catalyst::Exception->throw( message =>
2399 qq/Unsupported mod_perl version: $ENV{MOD_PERL}/ );
2404 # install the correct mod_perl handler
2405 if ( $version >= 1.9901 ) {
2406 *handler = sub : method {
2407 shift->handle_request(@_);
2411 *handler = sub ($$) { shift->handle_request(@_) };
2416 elsif ( $software eq 'Zeus-Perl' ) {
2417 $engine = 'Catalyst::Engine::Zeus';
2421 Catalyst::Exception->throw(
2422 message => qq/Unsupported mod_perl: $ENV{MOD_PERL}/ );
2427 $engine = $class->engine_class;
2430 Class::MOP::load_class($engine);
2432 # check for old engines that are no longer compatible
2434 if ( $engine->isa('Catalyst::Engine::Apache')
2435 && !Catalyst::Engine::Apache->VERSION )
2440 elsif ( $engine->isa('Catalyst::Engine::Server::Base')
2441 && Catalyst::Engine::Server->VERSION le '0.02' )
2446 elsif ($engine->isa('Catalyst::Engine::HTTP::POE')
2447 && $engine->VERSION eq '0.01' )
2452 elsif ($engine->isa('Catalyst::Engine::Zeus')
2453 && $engine->VERSION eq '0.01' )
2459 Catalyst::Exception->throw( message =>
2460 qq/Engine "$engine" is not supported by this version of Catalyst/
2465 $class->engine( $engine->new );
2468 =head2 $c->setup_home
2470 Sets up the home directory.
2475 my ( $class, $home ) = @_;
2477 if ( my $env = Catalyst::Utils::env_value( $class, 'HOME' ) ) {
2481 $home ||= Catalyst::Utils::home($class);
2484 #I remember recently being scolded for assigning config values like this
2485 $class->config->{home} ||= $home;
2486 $class->config->{root} ||= Path::Class::Dir->new($home)->subdir('root');
2490 =head2 $c->setup_log
2492 Sets up log by instantiating a L<Catalyst::Log|Catalyst::Log> object and
2493 passing it to C<log()>. Pass in a comma-delimited list of levels to set the
2496 This method also installs a C<debug> method that returns a true value into the
2497 catalyst subclass if the "debug" level is passed in the comma-delimited list,
2498 or if the C<$CATALYST_DEBUG> environment variable is set to a true value.
2500 Note that if the log has already been setup, by either a previous call to
2501 C<setup_log> or by a call such as C<< __PACKAGE__->log( MyLogger->new ) >>,
2502 that this method won't actually set up the log object.
2507 my ( $class, $levels ) = @_;
2510 $levels =~ s/^\s+//;
2511 $levels =~ s/\s+$//;
2512 my %levels = map { $_ => 1 } split /\s*,\s*/, $levels;
2514 my $env_debug = Catalyst::Utils::env_value( $class, 'DEBUG' );
2515 if ( defined $env_debug ) {
2516 $levels{debug} = 1 if $env_debug; # Ugly!
2517 delete($levels{debug}) unless $env_debug;
2520 unless ( $class->log ) {
2521 $class->log( Catalyst::Log->new(keys %levels) );
2524 if ( $levels{debug} ) {
2525 Class::MOP::get_metaclass_by_name($class)->add_method('debug' => sub { 1 });
2526 $class->log->debug('Debug messages enabled');
2530 =head2 $c->setup_plugins
2536 =head2 $c->setup_stats
2538 Sets up timing statistics class.
2543 my ( $class, $stats ) = @_;
2545 Catalyst::Utils::ensure_class_loaded($class->stats_class);
2547 my $env = Catalyst::Utils::env_value( $class, 'STATS' );
2548 if ( defined($env) ? $env : ($stats || $class->debug ) ) {
2549 Class::MOP::get_metaclass_by_name($class)->add_method('use_stats' => sub { 1 });
2550 $class->log->debug('Statistics enabled');
2555 =head2 $c->registered_plugins
2557 Returns a sorted list of the plugins which have either been stated in the
2558 import list or which have been added via C<< MyApp->plugin(@args); >>.
2560 If passed a given plugin name, it will report a boolean value indicating
2561 whether or not that plugin is loaded. A fully qualified name is required if
2562 the plugin name does not begin with C<Catalyst::Plugin::>.
2564 if ($c->registered_plugins('Some::Plugin')) {
2572 sub registered_plugins {
2574 return sort keys %{ $proto->_plugins } unless @_;
2576 return 1 if exists $proto->_plugins->{$plugin};
2577 return exists $proto->_plugins->{"Catalyst::Plugin::$plugin"};
2580 sub _register_plugin {
2581 my ( $proto, $plugin, $instant ) = @_;
2582 my $class = ref $proto || $proto;
2584 Class::MOP::load_class( $plugin );
2586 $proto->_plugins->{$plugin} = 1;
2589 if ( my $meta = Class::MOP::get_metaclass_by_name($class) ) {
2590 my @superclasses = ($plugin, $meta->superclasses );
2591 $meta->superclasses(@superclasses);
2593 unshift @{"$class\::ISA"}, $plugin;
2600 my ( $class, $plugins ) = @_;
2602 $class->_plugins( {} ) unless $class->_plugins;
2605 my @plugins = Catalyst::Utils::resolve_namespace($class . '::Plugin', 'Catalyst::Plugin', @$plugins);
2607 for my $plugin ( reverse @plugins ) {
2608 Class::MOP::load_class($plugin);
2609 my $meta = find_meta($plugin);
2610 next if $meta && $meta->isa('Moose::Meta::Role');
2612 $class->_register_plugin($plugin);
2617 grep { $_ && blessed($_) && $_->isa('Moose::Meta::Role') }
2618 map { find_meta($_) }
2621 Moose::Util::apply_all_roles(
2629 Returns an arrayref of the internal execution stack (actions that are
2630 currently executing).
2632 =head2 $c->stats_class
2634 Returns or sets the stats (timing statistics) class.
2636 =head2 $c->use_stats
2638 Returns 1 when stats collection is enabled. Stats collection is enabled
2639 when the -Stats options is set, debug is on or when the <MYAPP>_STATS
2640 environment variable is set.
2642 Note that this is a static method, not an accessor and should be overridden
2643 by declaring C<sub use_stats { 1 }> in your MyApp.pm, not by calling C<< $c->use_stats(1) >>.
2650 =head2 $c->write( $data )
2652 Writes $data to the output stream. When using this method directly, you
2653 will need to manually set the C<Content-Length> header to the length of
2654 your output data, if known.
2661 # Finalize headers if someone manually writes output
2662 $c->finalize_headers;
2664 return $c->engine->write( $c, @_ );
2669 Returns the Catalyst version number. Mostly useful for "powered by"
2670 messages in template systems.
2674 sub version { return $Catalyst::VERSION }
2676 =head1 CONFIGURATION
2678 There are a number of 'base' config variables which can be set:
2684 C<default_model> - The default model picked if you say C<< $c->model >>. See L</$c->model($name)>.
2688 C<default_view> - The default view to be rendered or returned when C<< $c->view >>. See L</$c->view($name)>.
2693 C<disable_component_resolution_regex_fallback> - Turns
2694 off the deprecated component resolution functionality so
2695 that if any of the component methods (e.g. C<< $c->controller('Foo') >>)
2696 are called then regex search will not be attempted on string values and
2697 instead C<undef> will be returned.
2701 C<home> - The application home directory. In an uninstalled application,
2702 this is the top level application directory. In an installed application,
2703 this will be the directory containing C<< MyApp.pm >>.
2707 C<ignore_frontend_proxy> - See L</PROXY SUPPORT>
2711 C<name> - The name of the application in debug messages and the debug and
2716 C<parse_on_demand> - The request body (for example file uploads) will not be parsed
2717 until it is accessed. This allows you to (for example) check authentication (and reject
2718 the upload) before actually recieving all the data. See L</ON-DEMAND PARSER>
2722 C<root> - The root directory for templates. Usually this is just a
2723 subdirectory of the home directory, but you can set it to change the
2724 templates to a different directory.
2728 C<search_extra> - Array reference passed to Module::Pluggable to for additional
2729 namespaces from which components will be loaded (and constructed and stored in
2730 C<< $c->components >>).
2734 C<show_internal_actions> - If true, causes internal actions such as C<< _DISPATCH >>
2735 to be shown in hit debug tables in the test server.
2739 C<using_frontend_proxy> - See L</PROXY SUPPORT>.
2743 =head1 INTERNAL ACTIONS
2745 Catalyst uses internal actions like C<_DISPATCH>, C<_BEGIN>, C<_AUTO>,
2746 C<_ACTION>, and C<_END>. These are by default not shown in the private
2747 action table, but you can make them visible with a config parameter.
2749 MyApp->config(show_internal_actions => 1);
2751 =head1 ON-DEMAND PARSER
2753 The request body is usually parsed at the beginning of a request,
2754 but if you want to handle input yourself, you can enable on-demand
2755 parsing with a config parameter.
2757 MyApp->config(parse_on_demand => 1);
2759 =head1 PROXY SUPPORT
2761 Many production servers operate using the common double-server approach,
2762 with a lightweight frontend web server passing requests to a larger
2763 backend server. An application running on the backend server must deal
2764 with two problems: the remote user always appears to be C<127.0.0.1> and
2765 the server's hostname will appear to be C<localhost> regardless of the
2766 virtual host that the user connected through.
2768 Catalyst will automatically detect this situation when you are running
2769 the frontend and backend servers on the same machine. The following
2770 changes are made to the request.
2772 $c->req->address is set to the user's real IP address, as read from
2773 the HTTP X-Forwarded-For header.
2775 The host value for $c->req->base and $c->req->uri is set to the real
2776 host, as read from the HTTP X-Forwarded-Host header.
2778 Additionally, you may be running your backend application on an insecure
2779 connection (port 80) while your frontend proxy is running under SSL. If there
2780 is a discrepancy in the ports, use the HTTP header C<X-Forwarded-Port> to
2781 tell Catalyst what port the frontend listens on. This will allow all URIs to
2782 be created properly.
2784 In the case of passing in:
2786 X-Forwarded-Port: 443
2788 All calls to C<uri_for> will result in an https link, as is expected.
2790 Obviously, your web server must support these headers for this to work.
2792 In a more complex server farm environment where you may have your
2793 frontend proxy server(s) on different machines, you will need to set a
2794 configuration option to tell Catalyst to read the proxied data from the
2797 MyApp->config(using_frontend_proxy => 1);
2799 If you do not wish to use the proxy support at all, you may set:
2801 MyApp->config(ignore_frontend_proxy => 1);
2803 =head1 THREAD SAFETY
2805 Catalyst has been tested under Apache 2's threading C<mpm_worker>,
2806 C<mpm_winnt>, and the standalone forking HTTP server on Windows. We
2807 believe the Catalyst core to be thread-safe.
2809 If you plan to operate in a threaded environment, remember that all other
2810 modules you are using must also be thread-safe. Some modules, most notably
2811 L<DBD::SQLite>, are not thread-safe.
2817 Join #catalyst on irc.perl.org.
2821 http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
2822 http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst-dev
2826 http://catalyst.perl.org
2830 http://dev.catalyst.perl.org
2834 =head2 L<Task::Catalyst> - All you need to start with Catalyst
2836 =head2 L<Catalyst::Manual> - The Catalyst Manual
2838 =head2 L<Catalyst::Component>, L<Catalyst::Controller> - Base classes for components
2840 =head2 L<Catalyst::Engine> - Core engine
2842 =head2 L<Catalyst::Log> - Log class.
2844 =head2 L<Catalyst::Request> - Request object
2846 =head2 L<Catalyst::Response> - Response object
2848 =head2 L<Catalyst::Test> - The test suite.
2850 =head1 PROJECT FOUNDER
2852 sri: Sebastian Riedel <sri@cpan.org>
2858 acme: Leon Brocard <leon@astray.com>
2860 abraxxa: Alexander Hartmaier <abraxxa@cpan.org>
2864 Andrew Ford E<lt>A.Ford@ford-mason.co.ukE<gt>
2868 andyg: Andy Grundman <andy@hybridized.org>
2870 audreyt: Audrey Tang
2872 bricas: Brian Cassidy <bricas@cpan.org>
2874 Caelum: Rafael Kitover <rkitover@io.com>
2876 chansen: Christian Hansen
2878 chicks: Christopher Hicks
2880 Chisel Wright C<pause@herlpacker.co.uk>
2882 Danijel Milicevic C<me@danijel.de>
2884 David Kamholz E<lt>dkamholz@cpan.orgE<gt>
2886 David Naughton, C<naughton@umn.edu>
2890 dkubb: Dan Kubb <dan.kubb-cpan@onautopilot.com>
2894 dwc: Daniel Westermann-Clark <danieltwc@cpan.org>
2896 esskar: Sascha Kiefer
2898 fireartist: Carl Franks <cfranks@cpan.org>
2900 frew: Arthur Axel "fREW" Schmidt <frioux@gmail.com>
2902 gabb: Danijel Milicevic
2906 Gavin Henry C<ghenry@perl.me.uk>
2910 groditi: Guillermo Roditi <groditi@gmail.com>
2912 hobbs: Andrew Rodland <andrew@cleverdomain.org>
2914 ilmari: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
2916 jcamacho: Juan Camacho
2918 jester: Jesse Sheidlower C<jester@panix.com>
2920 jhannah: Jay Hannah <jay@jays.net>
2926 jon: Jon Schutz <jjschutz@cpan.org>
2928 Jonathan Rockway C<< <jrockway@cpan.org> >>
2930 Kieren Diment C<kd@totaldatasolution.com>
2932 konobi: Scott McWhirter <konobi@cpan.org>
2934 marcus: Marcus Ramberg <mramberg@cpan.org>
2936 miyagawa: Tatsuhiko Miyagawa <miyagawa@bulknews.net>
2938 mst: Matt S. Trout <mst@shadowcatsystems.co.uk>
2942 naughton: David Naughton
2944 ningu: David Kamholz <dkamholz@cpan.org>
2946 nothingmuch: Yuval Kogman <nothingmuch@woobling.org>
2948 numa: Dan Sully <daniel@cpan.org>
2952 omega: Andreas Marienborg
2954 Oleg Kostyuk <cub.uanic@gmail.com>
2956 phaylon: Robert Sedlacek <phaylon@dunkelheit.at>
2958 rafl: Florian Ragwitz <rafl@debian.org>
2960 random: Roland Lammel <lammel@cpan.org>
2962 Robert Sedlacek C<< <rs@474.at> >>
2966 t0m: Tomas Doran <bobtfish@bobtfish.net>
2970 Viljo Marrandi C<vilts@yahoo.com>
2972 Will Hawes C<info@whawes.co.uk>
2974 willert: Sebastian Willert <willert@cpan.org>
2976 Yuval Kogman, C<nothingmuch@woobling.org>
2980 This library is free software. You can redistribute it and/or modify it under
2981 the same terms as Perl itself.
2987 __PACKAGE__->meta->make_immutable;