4 use Moose::Meta::Class ();
5 extends 'Catalyst::Component';
6 use Moose::Util qw/find_meta/;
7 use B::Hooks::EndOfScope ();
8 use Catalyst::Exception;
9 use Catalyst::Exception::Detach;
10 use Catalyst::Exception::Go;
12 use Catalyst::Request;
13 use Catalyst::Request::Upload;
14 use Catalyst::Response;
16 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::Util qw/first/;
31 use List::MoreUtils qw/uniq/;
34 use Carp qw/croak carp shortmess/;
36 BEGIN { require 5.008004; }
38 has stack => (is => 'ro', default => sub { [] });
39 has stash => (is => 'rw', default => sub { {} });
40 has state => (is => 'rw', default => 0);
41 has stats => (is => 'rw');
42 has action => (is => 'rw');
43 has counter => (is => 'rw', default => sub { {} });
44 has request => (is => 'rw', default => sub { $_[0]->request_class->new({}) }, required => 1, lazy => 1);
45 has response => (is => 'rw', default => sub { $_[0]->response_class->new({}) }, required => 1, lazy => 1);
46 has namespace => (is => 'rw');
48 sub depth { scalar @{ shift->stack || [] }; }
49 sub comp { shift->component(@_) }
52 my $self = shift; return $self->request(@_);
55 my $self = shift; return $self->response(@_);
58 # For backwards compatibility
59 sub finalize_output { shift->finalize_body(@_) };
64 our $RECURSION = 1000;
65 our $DETACH = Catalyst::Exception::Detach->new;
66 our $GO = Catalyst::Exception::Go->new;
68 #I imagine that very few of these really need to be class variables. if any.
69 #maybe we should just make them attributes with a default?
70 __PACKAGE__->mk_classdata($_) # XXX FIXME - components remove from here
71 for qw/container components arguments dispatcher engine log dispatcher_class
72 engine_class context_class request_class response_class stats_class
75 __PACKAGE__->dispatcher_class('Catalyst::Dispatcher');
76 __PACKAGE__->engine_class('Catalyst::Engine::CGI');
77 __PACKAGE__->request_class('Catalyst::Request');
78 __PACKAGE__->response_class('Catalyst::Response');
79 __PACKAGE__->stats_class('Catalyst::Stats');
81 # Remember to update this in Catalyst::Runtime as well!
83 our $VERSION = '5.80032';
86 my ( $class, @arguments ) = @_;
88 # We have to limit $class to Catalyst to avoid pushing Catalyst upon every
90 return unless $class eq 'Catalyst';
92 my $caller = caller();
93 return if $caller eq 'main';
95 my $meta = Moose::Meta::Class->initialize($caller);
97 unless ( $caller->isa('Catalyst') ) { # XXX - Remove!
98 my @superclasses = ($meta->superclasses, $class, 'Catalyst::Controller'); # XXX - Remove!
99 $meta->superclasses(@superclasses); # XXX - Remove!
102 # Avoid possible C3 issues if 'Moose::Object' is already on RHS of MyApp
103 $meta->superclasses(grep { $_ ne 'Moose::Object' } $meta->superclasses);
105 unless( $meta->has_method('meta') ){
106 if ($Moose::VERSION >= 1.15) {
107 $meta->_add_meta_method('meta');
110 $meta->add_method(meta => sub { Moose::Meta::Class->initialize("${caller}") } );
114 $caller->arguments( [@arguments] );
118 sub _application { $_[0] }
122 Catalyst - The Elegant MVC Web Application Framework
126 See the L<Catalyst::Manual> distribution for comprehensive
127 documentation and tutorials.
129 # Install Catalyst::Devel for helpers and other development tools
130 # use the helper to create a new application
133 # add models, views, controllers
134 script/myapp_create.pl model MyDatabase DBIC::Schema create=static dbi:SQLite:/path/to/db
135 script/myapp_create.pl view MyTemplate TT
136 script/myapp_create.pl controller Search
138 # built in testserver -- use -r to restart automatically on changes
139 # --help to see all available options
140 script/myapp_server.pl
142 # command line testing interface
143 script/myapp_test.pl /yada
146 use Catalyst qw/-Debug/; # include plugins here as well
148 ### In lib/MyApp/Controller/Root.pm (autocreated)
149 sub foo : Global { # called for /foo, /foo/1, /foo/1/2, etc.
150 my ( $self, $c, @args ) = @_; # args are qw/1 2/ for /foo/1/2
151 $c->stash->{template} = 'foo.tt'; # set the template
152 # lookup something from db -- stash vars are passed to TT
154 $c->model('Database::Foo')->search( { country => $args[0] } );
155 if ( $c->req->params->{bar} ) { # access GET or POST parameters
156 $c->forward( 'bar' ); # process another action
157 # do something else after forward returns
161 # The foo.tt TT template can use the stash data from the database
162 [% WHILE (item = data.next) %]
166 # called for /bar/of/soap, /bar/of/soap/10, etc.
167 sub bar : Path('/bar/of/soap') { ... }
169 # called for all actions, from the top-most controller downwards
171 my ( $self, $c ) = @_;
172 if ( !$c->user_exists ) { # Catalyst::Plugin::Authentication
173 $c->res->redirect( '/login' ); # require login
174 return 0; # abort request and go immediately to end()
176 return 1; # success; carry on to next action
179 # called after all actions are finished
181 my ( $self, $c ) = @_;
182 if ( scalar @{ $c->error } ) { ... } # handle errors
183 return if $c->res->body; # already have a response
184 $c->forward( 'MyApp::View::TT' ); # render template
187 ### in MyApp/Controller/Foo.pm
188 # called for /foo/bar
189 sub bar : Local { ... }
191 # called for /blargle
192 sub blargle : Global { ... }
194 # an index action matches /foo, but not /foo/1, etc.
195 sub index : Private { ... }
197 ### in MyApp/Controller/Foo/Bar.pm
198 # called for /foo/bar/baz
199 sub baz : Local { ... }
201 # first Root auto is called, then Foo auto, then this
202 sub auto : Private { ... }
204 # powerful regular expression paths are also possible
205 sub details : Regex('^product/(\w+)/details$') {
206 my ( $self, $c ) = @_;
207 # extract the (\w+) from the URI
208 my $product = $c->req->captures->[0];
211 See L<Catalyst::Manual::Intro> for additional information.
215 Catalyst is a modern framework for making web applications without the
216 pain usually associated with this process. This document is a reference
217 to the main Catalyst application. If you are a new user, we suggest you
218 start with L<Catalyst::Manual::Tutorial> or L<Catalyst::Manual::Intro>.
220 See L<Catalyst::Manual> for more documentation.
222 Catalyst plugins can be loaded by naming them as arguments to the "use
223 Catalyst" statement. Omit the C<Catalyst::Plugin::> prefix from the
224 plugin name, i.e., C<Catalyst::Plugin::My::Module> becomes
227 use Catalyst qw/My::Module/;
229 If your plugin starts with a name other than C<Catalyst::Plugin::>, you can
230 fully qualify the name by using a unary plus:
234 +Fully::Qualified::Plugin::Name
237 Special flags like C<-Debug> and C<-Engine> can also be specified as
238 arguments when Catalyst is loaded:
240 use Catalyst qw/-Debug My::Module/;
242 The position of plugins and flags in the chain is important, because
243 they are loaded in the order in which they appear.
245 The following flags are supported:
249 Enables debug output. You can also force this setting from the system
250 environment with CATALYST_DEBUG or <MYAPP>_DEBUG. The environment
251 settings override the application, with <MYAPP>_DEBUG having the highest
254 This sets the log level to 'debug' and enables full debug output on the
255 error screen. If you only want the latter, see L<< $c->debug >>.
259 Forces Catalyst to use a specific engine. Omit the
260 C<Catalyst::Engine::> prefix of the engine name, i.e.:
262 use Catalyst qw/-Engine=CGI/;
266 Forces Catalyst to use a specific home directory, e.g.:
268 use Catalyst qw[-Home=/usr/mst];
270 This can also be done in the shell environment by setting either the
271 C<CATALYST_HOME> environment variable or C<MYAPP_HOME>; where C<MYAPP>
272 is replaced with the uppercased name of your application, any "::" in
273 the name will be replaced with underscores, e.g. MyApp::Web should use
274 MYAPP_WEB_HOME. If both variables are set, the MYAPP_HOME one will be used.
276 If none of these are set, Catalyst will attempt to automatically detect the
277 home directory. If you are working in a development envirnoment, Catalyst
278 will try and find the directory containing either Makefile.PL, Build.PL or
279 dist.ini. If the application has been installed into the system (i.e.
280 you have done C<make install>), then Catalyst will use the path to your
281 application module, without the .pm extension (ie, /foo/MyApp if your
282 application was installed at /foo/MyApp.pm)
286 use Catalyst '-Log=warn,fatal,error';
288 Specifies a comma-delimited list of log levels.
292 Enables statistics collection and reporting.
294 use Catalyst qw/-Stats=1/;
296 You can also force this setting from the system environment with CATALYST_STATS
297 or <MYAPP>_STATS. The environment settings override the application, with
298 <MYAPP>_STATS having the highest priority.
300 Stats are also enabled if L<< debugging |/"-Debug" >> is enabled.
304 =head2 INFORMATION ABOUT THE CURRENT REQUEST
308 Returns a L<Catalyst::Action> object for the current action, which
309 stringifies to the action name. See L<Catalyst::Action>.
313 Returns the namespace of the current action, i.e., the URI prefix
314 corresponding to the controller of the current action. For example:
316 # in Controller::Foo::Bar
317 $c->namespace; # returns 'foo/bar';
323 Returns the current L<Catalyst::Request> object, giving access to
324 information about the current client request (including parameters,
325 cookies, HTTP headers, etc.). See L<Catalyst::Request>.
327 =head2 REQUEST FLOW HANDLING
329 =head2 $c->forward( $action [, \@arguments ] )
331 =head2 $c->forward( $class, $method, [, \@arguments ] )
333 Forwards processing to another action, by its private name. If you give a
334 class name but no method, C<process()> is called. You may also optionally
335 pass arguments in an arrayref. The action will receive the arguments in
336 C<@_> and C<< $c->req->args >>. Upon returning from the function,
337 C<< $c->req->args >> will be restored to the previous values.
339 Any data C<return>ed from the action forwarded to, will be returned by the
342 my $foodata = $c->forward('/foo');
343 $c->forward('index');
344 $c->forward(qw/Model::DBIC::Foo do_stuff/);
345 $c->forward('View::TT');
347 Note that L<< forward|/"$c->forward( $action [, \@arguments ] )" >> implies
348 an C<< eval { } >> around the call (actually
349 L<< execute|/"$c->execute( $class, $coderef )" >> does), thus de-fatalizing
350 all 'dies' within the called action. If you want C<die> to propagate you
351 need to do something like:
354 die join "\n", @{ $c->error } if @{ $c->error };
356 Or make sure to always return true values from your actions and write
359 $c->forward('foo') || return;
361 Another note is that C<< $c->forward >> always returns a scalar because it
362 actually returns $c->state which operates in a scalar context.
363 Thus, something like:
367 in an action that is forwarded to is going to return a scalar,
368 i.e. how many items are in that array, which is probably not what you want.
369 If you need to return an array then return a reference to it,
372 $c->stash->{array} = \@array;
374 and access it from the stash.
376 Keep in mind that the C<end> method used is that of the caller action. So a C<$c-E<gt>detach> inside a forwarded action would run the C<end> method from the original action requested.
380 sub forward { my $c = shift; no warnings 'recursion'; $c->dispatcher->forward( $c, @_ ) }
382 =head2 $c->detach( $action [, \@arguments ] )
384 =head2 $c->detach( $class, $method, [, \@arguments ] )
388 The same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, but
389 doesn't return to the previous action when processing is finished.
391 When called with no arguments it escapes the processing chain entirely.
395 sub detach { my $c = shift; $c->dispatcher->detach( $c, @_ ) }
397 =head2 $c->visit( $action [, \@captures, \@arguments ] )
399 =head2 $c->visit( $class, $method, [, \@captures, \@arguments ] )
401 Almost the same as L<< forward|/"$c->forward( $action [, \@arguments ] )" >>,
402 but does a full dispatch, instead of just calling the new C<$action> /
403 C<< $class->$method >>. This means that C<begin>, C<auto> and the method
404 you go to are called, just like a new request.
406 In addition both C<< $c->action >> and C<< $c->namespace >> are localized.
407 This means, for example, that C<< $c->action >> methods such as
408 L<name|Catalyst::Action/name>, L<class|Catalyst::Action/class> and
409 L<reverse|Catalyst::Action/reverse> return information for the visited action
410 when they are invoked within the visited action. This is different from the
411 behavior of L<< forward|/"$c->forward( $action [, \@arguments ] )" >>, which
412 continues to use the $c->action object from the caller action even when
413 invoked from the callee.
415 C<< $c->stash >> is kept unchanged.
417 In effect, L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >>
418 allows you to "wrap" another action, just as it would have been called by
419 dispatching from a URL, while the analogous
420 L<< go|/"$c->go( $action [, \@captures, \@arguments ] )" >> allows you to
421 transfer control to another action as if it had been reached directly from a URL.
425 sub visit { my $c = shift; $c->dispatcher->visit( $c, @_ ) }
427 =head2 $c->go( $action [, \@captures, \@arguments ] )
429 =head2 $c->go( $class, $method, [, \@captures, \@arguments ] )
431 The relationship between C<go> and
432 L<< visit|/"$c->visit( $action [, \@captures, \@arguments ] )" >> is the same as
433 the relationship between
434 L<< forward|/"$c->forward( $class, $method, [, \@arguments ] )" >> and
435 L<< detach|/"$c->detach( $action [, \@arguments ] )" >>. Like C<< $c->visit >>,
436 C<< $c->go >> will perform a full dispatch on the specified action or method,
437 with localized C<< $c->action >> and C<< $c->namespace >>. Like C<detach>,
438 C<go> escapes the processing of the current request chain on completion, and
439 does not return to its caller.
441 @arguments are arguments to the final destination of $action. @captures are
442 arguments to the intermediate steps, if any, on the way to the final sub of
447 sub go { my $c = shift; $c->dispatcher->go( $c, @_ ) }
453 Returns the current L<Catalyst::Response> object, see there for details.
457 Returns a hashref to the stash, which may be used to store data and pass
458 it between components during a request. You can also set hash keys by
459 passing arguments. The stash is automatically sent to the view. The
460 stash is cleared at the end of a request; it cannot be used for
461 persistent storage (for this you must use a session; see
462 L<Catalyst::Plugin::Session> for a complete system integrated with
465 $c->stash->{foo} = $bar;
466 $c->stash( { moose => 'majestic', qux => 0 } );
467 $c->stash( bar => 1, gorch => 2 ); # equivalent to passing a hashref
469 # stash is automatically passed to the view for use in a template
470 $c->forward( 'MyApp::View::TT' );
474 around stash => sub {
477 my $stash = $orig->($c);
479 my $new_stash = @_ > 1 ? {@_} : $_[0];
480 croak('stash takes a hash or hashref') unless ref $new_stash;
481 foreach my $key ( keys %$new_stash ) {
482 $stash->{$key} = $new_stash->{$key};
492 =head2 $c->error($error, ...)
494 =head2 $c->error($arrayref)
496 Returns an arrayref containing error messages. If Catalyst encounters an
497 error while processing a request, it stores the error in $c->error. This
498 method should only be used to store fatal error messages.
500 my @error = @{ $c->error };
504 $c->error('Something bad happened');
511 my $error = ref $_[0] eq 'ARRAY' ? $_[0] : [@_];
512 croak @$error unless ref $c;
513 push @{ $c->{error} }, @$error;
515 elsif ( defined $_[0] ) { $c->{error} = undef }
516 return $c->{error} || [];
522 Contains the return value of the last executed action.
523 Note that << $c->state >> operates in a scalar context which means that all
524 values it returns are scalar.
526 =head2 $c->clear_errors
528 Clear errors. You probably don't want to clear the errors unless you are
529 implementing a custom error screen.
531 This is equivalent to running
542 =head2 COMPONENT ACCESSORS
544 =head2 $c->controller($name)
546 Gets a L<Catalyst::Controller> instance by name.
548 $c->controller('Foo')->do_stuff;
550 If the name is omitted, will return the controller for the dispatched
553 If you want to search for controllers, pass in a regexp as the argument.
555 # find all controllers that start with Foo
556 my @foo_controllers = $c->controller(qr{^Foo});
562 my ( $c, $name, @args ) = @_;
564 $name ||= Catalyst::Utils::class2classshortsuffix( $c->action->class );
566 return $c->container->get_component_from_sub_container( 'controller', $name, $c, @args);
569 =head2 $c->model($name)
571 Gets a L<Catalyst::Model> instance by name.
573 $c->model('Foo')->do_stuff;
575 Any extra arguments are directly passed to ACCEPT_CONTEXT.
577 If the name is omitted, it will look for
578 - a model object in $c->stash->{current_model_instance}, then
579 - a model name in $c->stash->{current_model}, then
580 - a config setting 'default_model', or
581 - check if there is only one model, and return it if that's the case.
583 If you want to search for models, pass in a regexp as the argument.
585 # find all models that start with Foo
586 my @foo_models = $c->model(qr{^Foo});
591 my ( $c, $name, @args ) = @_;
593 if (ref $c && !$name) {
594 return $c->stash->{current_model_instance}
595 if $c->stash->{current_model_instance};
597 $name = $c->stash->{current_model}
598 if $c->stash->{current_model};
601 return $c->container->get_component_from_sub_container( 'model', $name, $c, @args);
605 =head2 $c->view($name)
607 Gets a L<Catalyst::View> instance by name.
609 $c->view('Foo')->do_stuff;
611 Any extra arguments are directly passed to ACCEPT_CONTEXT.
613 If the name is omitted, it will look for
614 - a view object in $c->stash->{current_view_instance}, then
615 - a view name in $c->stash->{current_view}, then
616 - a config setting 'default_view', or
617 - check if there is only one view, and return it if that's the case.
619 If you want to search for views, pass in a regexp as the argument.
621 # find all views that start with Foo
622 my @foo_views = $c->view(qr{^Foo});
627 my ( $c, $name, @args ) = @_;
629 if (ref $c && !$name) {
630 return $c->stash->{current_view_instance}
631 if $c->stash->{current_view_instance};
633 $name = $c->stash->{current_view}
634 if $c->stash->{current_view};
637 return $c->container->get_component_from_sub_container( 'view', $name, $c, @args);
640 =head2 $c->controllers
642 Returns the available names which can be passed to $c->controller
648 return $c->container->get_sub_container('controller')->get_service_list;
653 Returns the available names which can be passed to $c->model
659 return $c->container->get_sub_container('model')->get_service_list;
665 Returns the available names which can be passed to $c->view
671 return $c->container->get_sub_container('view')->get_service_list;
674 =head2 $c->comp($name)
676 =head2 $c->component($name)
678 Gets a component object by name. This method is not recommended,
679 unless you want to get a specific component by full
680 class. C<< $c->controller >>, C<< $c->model >>, and C<< $c->view >>
681 should be used instead.
683 If C<$name> is a regexp, a list of components matched against the full
684 component name will be returned.
689 my ( $c, $component, @args ) = @_;
691 unless ($component) {
692 $c->log->warn('Calling $c->component with no args is deprecated and ');
693 $c->log->warn('will be removed in a future release.');
694 $c->log->warn('Use $c->component_list instead.');
695 return $c->component_list;
698 my ($type, $name) = _get_component_type_name($component);
700 return $c->container->get_component_from_sub_container(
701 $type, $name, $c, @args
704 my @result = $c->container->find_component( $component, $c, @args );
706 # list context for regexp searches
707 return @result if ref $component;
709 # only one component (if it's found) for string searches
710 return shift @result if @result;
712 # FIXME: I probably shouldn't be doing this
713 # I'm keeping it temporarily for things like $c->comp('MyApp')
714 return $c->components->{$component}
715 if exists $c->components->{$component} and !@args;
717 $c->log->warn("Looking for '$component', but nothing was found.");
719 # I would expect to return an empty list here, but that breaks back-compat
720 $c->log->warn('Component not found, returning the list of existing');
721 $c->log->warn('components. This behavior is deprecated and will be');
722 $c->log->warn('removed in a future release. Use $c->component_list');
723 $c->log->warn('instead.');
725 return $c->component_list;
728 =head2 $c->component_list
730 Returns the sorted list of the component names of the application.
734 sub component_list { sort keys %{ shift->components } }
736 =head2 CLASS DATA AND HELPER CLASSES
740 Returns or takes a hashref containing the application's configuration.
742 __PACKAGE__->config( { db => 'dsn:SQLite:foo.db' } );
744 You can also use a C<YAML>, C<XML> or L<Config::General> config file
745 like C<myapp.conf> in your applications home directory. See
746 L<Catalyst::Plugin::ConfigLoader>.
748 =head3 Cascading configuration
750 The config method is present on all Catalyst components, and configuration
751 will be merged when an application is started. Configuration loaded with
752 L<Catalyst::Plugin::ConfigLoader> takes precedence over other configuration,
753 followed by configuration in your top level C<MyApp> class. These two
754 configurations are merged, and then configuration data whose hash key matches a
755 component name is merged with configuration for that component.
757 The configuration for a component is then passed to the C<new> method when a
758 component is constructed.
762 MyApp->config({ 'Model::Foo' => { bar => 'baz', overrides => 'me' } });
763 MyApp::Model::Foo->config({ quux => 'frob', overrides => 'this' });
765 will mean that C<MyApp::Model::Foo> receives the following data when
768 MyApp::Model::Foo->new({
774 It's common practice to use a Moose attribute
775 on the receiving component to access the config value.
777 package MyApp::Model::Foo;
781 # this attr will receive 'baz' at construction time
787 You can then get the value 'baz' by calling $c->model('Foo')->bar
788 (or $self->bar inside code in the model).
790 B<NOTE:> you MUST NOT call C<< $self->config >> or C<< __PACKAGE__->config >>
791 as a way of reading config within your code, as this B<will not> give you the
792 correctly merged config back. You B<MUST> take the config values supplied to
793 the constructor and use those instead.
797 around config => sub {
801 croak('Setting config after setup has been run is not allowed.')
802 if ( @_ and $c->setup_finished );
809 Returns the logging object instance. Unless it is already set, Catalyst
810 sets this up with a L<Catalyst::Log> object. To use your own log class,
811 set the logger with the C<< __PACKAGE__->log >> method prior to calling
812 C<< __PACKAGE__->setup >>.
814 __PACKAGE__->log( MyLogger->new );
819 $c->log->info( 'Now logging with my own logger!' );
821 Your log class should implement the methods described in
827 Returns 1 if debug mode is enabled, 0 otherwise.
829 You can enable debug mode in several ways:
833 =item By calling myapp_server.pl with the -d flag
835 =item With the environment variables MYAPP_DEBUG, or CATALYST_DEBUG
837 =item The -Debug option in your MyApp.pm
839 =item By declaring C<sub debug { 1 }> in your MyApp.pm.
843 The first three also set the log level to 'debug'.
845 Calling C<< $c->debug(1) >> has no effect.
851 =head2 $c->dispatcher
853 Returns the dispatcher instance. See L<Catalyst::Dispatcher>.
857 Returns the engine instance. See L<Catalyst::Engine>.
860 =head2 UTILITY METHODS
862 =head2 $c->path_to(@path)
864 Merges C<@path> with C<< $c->config->{home} >> and returns a
865 L<Path::Class::Dir> object. Note you can usually use this object as
866 a filename, but sometimes you will have to explicitly stringify it
867 yourself by calling the C<< ->stringify >> method.
871 $c->path_to( 'db', 'sqlite.db' );
876 my ( $c, @path ) = @_;
877 my $path = Path::Class::Dir->new( $c->config->{home}, @path );
878 if ( -d $path ) { return $path }
879 else { return Path::Class::File->new( $c->config->{home}, @path ) }
882 =head2 $c->plugin( $name, $class, @args )
884 Helper method for plugins. It creates a class data accessor/mutator and
885 loads and instantiates the given class.
887 MyApp->plugin( 'prototype', 'HTML::Prototype' );
889 $c->prototype->define_javascript_functions;
891 B<Note:> This method of adding plugins is deprecated. The ability
892 to add plugins like this B<will be removed> in a Catalyst 5.81.
893 Please do not use this functionality in new code.
898 my ( $class, $name, $plugin, @args ) = @_;
900 # See block comment in t/aggregate/unit_core_plugin.t
901 $class->log->warn(qq/Adding plugin using the ->plugin method is deprecated, and will be removed in Catalyst 5.81/);
903 $class->_register_plugin( $plugin, 1 );
905 eval { $plugin->import };
906 $class->mk_classdata($name);
908 eval { $obj = $plugin->new(@args) };
911 Catalyst::Exception->throw( message =>
912 qq/Couldn't instantiate instant plugin "$plugin", "$@"/ );
916 $class->log->debug(qq/Initialized instant plugin "$plugin" as "$name"/)
922 Initializes the dispatcher and engine, loads any plugins, and loads the
923 model, view, and controller components. You may also specify an array
924 of plugins to load here, if you choose to not load them in the C<use
928 MyApp->setup( qw/-Debug/ );
933 my ( $class, @arguments ) = @_;
934 croak('Running setup more than once')
935 if ( $class->setup_finished );
937 unless ( $class->isa('Catalyst') ) {
939 Catalyst::Exception->throw(
940 message => qq/'$class' does not inherit from Catalyst/ );
943 if ( $class->arguments ) {
944 @arguments = ( @arguments, @{ $class->arguments } );
950 foreach (@arguments) {
954 ( $flags->{log} ) ? 'debug,' . $flags->{log} : 'debug';
956 elsif (/^-(\w+)=?(.*)$/) {
957 $flags->{ lc $1 } = $2;
960 push @{ $flags->{plugins} }, $_;
964 $class->setup_config();
965 $class->setup_home( delete $flags->{home} );
967 $class->setup_log( delete $flags->{log} );
968 $class->setup_plugins( delete $flags->{plugins} );
969 $class->setup_dispatcher( delete $flags->{dispatcher} );
970 $class->setup_engine( delete $flags->{engine} );
971 $class->setup_stats( delete $flags->{stats} );
973 for my $flag ( sort keys %{$flags} ) {
975 if ( my $code = $class->can( 'setup_' . $flag ) ) {
976 &$code( $class, delete $flags->{$flag} );
979 $class->log->warn(qq/Unknown flag "$flag"/);
983 eval { require Catalyst::Devel; };
984 if( !$@ && $ENV{CATALYST_SCRIPT_GEN} && ( $ENV{CATALYST_SCRIPT_GEN} < $Catalyst::Devel::CATALYST_SCRIPT_GEN ) ) {
985 $class->log->warn(<<"EOF");
986 You are running an old script!
988 Please update by running (this will overwrite existing files):
989 catalyst.pl -force -scripts $class
991 or (this will not overwrite existing files):
992 catalyst.pl -scripts $class
997 if ( $class->debug ) {
998 my @plugins = map { "$_ " . ( $_->VERSION || '' ) } $class->registered_plugins;
1001 my $column_width = Catalyst::Utils::term_width() - 6;
1002 my $t = Text::SimpleTable->new($column_width);
1003 $t->row($_) for @plugins;
1004 $class->log->debug( "Loaded plugins:\n" . $t->draw . "\n" );
1007 my $dispatcher = $class->dispatcher;
1008 my $engine = $class->engine;
1009 my $home = $class->config->{home};
1011 $class->log->debug(sprintf(q/Loaded dispatcher "%s"/, blessed($dispatcher)));
1012 $class->log->debug(sprintf(q/Loaded engine "%s"/, blessed($engine)));
1016 ? $class->log->debug(qq/Found home "$home"/)
1017 : $class->log->debug(qq/Home "$home" doesn't exist/)
1018 : $class->log->debug(q/Couldn't find home/);
1021 # Call plugins setup, this is stupid and evil.
1022 # Also screws C3 badly on 5.10, hack to avoid.
1024 no warnings qw/redefine/;
1025 local *setup = sub { };
1026 $class->setup unless $Catalyst::__AM_RESTARTING;
1029 # Initialize our data structure
1030 $class->components( {} ); # XXX - Remove!
1032 $class->setup_components;
1034 if ( $class->debug ) { # XXX - Fixme to be a method on the container? (Or at least get a) data structure back from the container!!
1035 my $column_width = Catalyst::Utils::term_width() - 8 - 9;
1036 my $t = Text::SimpleTable->new( [ $column_width, 'Class' ], [ 8, 'Type' ] );
1037 for my $comp ( sort keys %{ $class->components } ) {
1038 my $type = ref $class->components->{$comp} ? 'instance' : 'class';
1039 $t->row( $comp, $type );
1041 $class->log->debug( "Loaded components:\n" . $t->draw . "\n" )
1042 if ( keys %{ $class->components } );
1045 # Add our self to components, since we are also a component
1046 if( $class->isa('Catalyst::Controller') ){
1047 $class->components->{$class} = $class;
1050 $class->setup_actions;
1052 if ( $class->debug ) {
1053 my $name = $class->config->{name} || 'Application';
1054 $class->log->info("$name powered by Catalyst $Catalyst::VERSION");
1057 # Make sure that the application class becomes immutable at this point,
1058 B::Hooks::EndOfScope::on_scope_end {
1060 my $meta = Class::MOP::get_metaclass_by_name($class);
1063 && ! { $meta->immutable_options }->{replace_constructor}
1065 $class->isa('Class::Accessor::Fast')
1066 || $class->isa('Class::Accessor')
1069 warn "You made your application class ($class) immutable, "
1070 . "but did not inline the\nconstructor. "
1071 . "This will break catalyst, as your app \@ISA "
1072 . "Class::Accessor(::Fast)?\nPlease pass "
1073 . "(replace_constructor => 1)\nwhen making your class immutable.\n";
1075 $meta->make_immutable(
1076 replace_constructor => 1,
1077 ) unless $meta->is_immutable;
1080 if ($class->config->{case_sensitive}) {
1081 $class->log->warn($class . "->config->{case_sensitive} is set.");
1082 $class->log->warn("This setting is deprecated and planned to be removed in Catalyst 5.81.");
1085 $class->setup_finalize;
1086 # Should be the last thing we do so that user things hooking
1087 # setup_finalize can log..
1088 $class->log->_flush() if $class->log->can('_flush');
1089 return 1; # Explicit return true as people have __PACKAGE__->setup as the last thing in their class. HATE.
1092 =head2 $app->setup_finalize
1094 A hook to attach modifiers to. This method does not do anything except set the
1095 C<setup_finished> accessor.
1097 Applying method modifiers to the C<setup> method doesn't work, because of quirky things done for plugin setup.
1101 after setup_finalize => sub {
1109 sub setup_finalize {
1111 $class->setup_finished(1);
1114 =head2 $c->uri_for( $path?, @args?, \%query_values? )
1116 =head2 $c->uri_for( $action, \@captures?, @args?, \%query_values? )
1118 Constructs an absolute L<URI> object based on the application root, the
1119 provided path, and the additional arguments and query parameters provided.
1120 When used as a string, provides a textual URI. If you need more flexibility
1121 than this (i.e. the option to provide relative URIs etc.) see
1122 L<Catalyst::Plugin::SmartURI>.
1124 If no arguments are provided, the URI for the current action is returned.
1125 To return the current action and also provide @args, use
1126 C<< $c->uri_for( $c->action, @args ) >>.
1128 If the first argument is a string, it is taken as a public URI path relative
1129 to C<< $c->namespace >> (if it doesn't begin with a forward slash) or
1130 relative to the application root (if it does). It is then merged with
1131 C<< $c->request->base >>; any C<@args> are appended as additional path
1132 components; and any C<%query_values> are appended as C<?foo=bar> parameters.
1134 If the first argument is a L<Catalyst::Action> it represents an action which
1135 will have its path resolved using C<< $c->dispatcher->uri_for_action >>. The
1136 optional C<\@captures> argument (an arrayref) allows passing the captured
1137 variables that are needed to fill in the paths of Chained and Regex actions;
1138 once the path is resolved, C<uri_for> continues as though a path was
1139 provided, appending any arguments or parameters and creating an absolute
1142 The captures for the current request can be found in
1143 C<< $c->request->captures >>, and actions can be resolved using
1144 C<< Catalyst::Controller->action_for($name) >>. If you have a private action
1145 path, use C<< $c->uri_for_action >> instead.
1147 # Equivalent to $c->req->uri
1148 $c->uri_for($c->action, $c->req->captures,
1149 @{ $c->req->args }, $c->req->params);
1151 # For the Foo action in the Bar controller
1152 $c->uri_for($c->controller('Bar')->action_for('Foo'));
1154 # Path to a static resource
1155 $c->uri_for('/static/images/logo.png');
1160 my ( $c, $path, @args ) = @_;
1162 if (blessed($path) && $path->isa('Catalyst::Controller')) {
1163 $path = $path->path_prefix;
1168 undef($path) if (defined $path && $path eq '');
1171 ( scalar @args && ref $args[$#args] eq 'HASH' ? pop @args : {} );
1173 carp "uri_for called with undef argument" if grep { ! defined $_ } @args;
1174 foreach my $arg (@args) {
1175 utf8::encode($arg) if utf8::is_utf8($arg);
1176 $arg =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
1179 if ( blessed($path) ) { # action object
1180 s|/|%2F|g for @args;
1181 my $captures = [ map { s|/|%2F|g; $_; }
1182 ( scalar @args && ref $args[0] eq 'ARRAY'
1186 foreach my $capture (@$captures) {
1187 utf8::encode($capture) if utf8::is_utf8($capture);
1188 $capture =~ s/([^$URI::uric])/$URI::Escape::escapes{$1}/go;
1192 $path = $c->dispatcher->uri_for_action($action, $captures);
1193 if (not defined $path) {
1194 $c->log->debug(qq/Can't find uri_for action '$action' @$captures/)
1198 $path = '/' if $path eq '';
1201 unshift(@args, $path);
1203 unless (defined $path && $path =~ s!^/!!) { # in-place strip
1204 my $namespace = $c->namespace;
1205 if (defined $path) { # cheesy hack to handle path '../foo'
1206 $namespace =~ s{(?:^|/)[^/]+$}{} while $args[0] =~ s{^\.\./}{};
1208 unshift(@args, $namespace || '');
1211 # join args with '/', or a blank string
1212 my $args = join('/', grep { defined($_) } @args);
1213 $args =~ s/\?/%3F/g; # STUPID STUPID SPECIAL CASE
1215 my $base = $c->req->base;
1216 my $class = ref($base);
1217 $base =~ s{(?<!/)$}{/};
1221 if (my @keys = keys %$params) {
1222 # somewhat lifted from URI::_query's query_form
1223 $query = '?'.join('&', map {
1224 my $val = $params->{$_};
1225 s/([;\/?:@&=+,\$\[\]%])/$URI::Escape::escapes{$1}/go;
1228 $val = '' unless defined $val;
1231 utf8::encode( $param ) if utf8::is_utf8($param);
1232 # using the URI::Escape pattern here so utf8 chars survive
1233 $param =~ s/([^A-Za-z0-9\-_.!~*'() ])/$URI::Escape::escapes{$1}/go;
1235 "${key}=$param"; } ( ref $val eq 'ARRAY' ? @$val : $val ));
1239 my $res = bless(\"${base}${args}${query}", $class);
1243 =head2 $c->uri_for_action( $path, \@captures?, @args?, \%query_values? )
1245 =head2 $c->uri_for_action( $action, \@captures?, @args?, \%query_values? )
1251 A private path to the Catalyst action you want to create a URI for.
1253 This is a shortcut for calling C<< $c->dispatcher->get_action_by_path($path)
1254 >> and passing the resulting C<$action> and the remaining arguments to C<<
1257 You can also pass in a Catalyst::Action object, in which case it is passed to
1260 Note that although the path looks like a URI that dispatches to the wanted action, it is not a URI, but an internal path to that action.
1262 For example, if the action looks like:
1264 package MyApp::Controller::Users;
1266 sub lst : Path('the-list') {}
1270 $c->uri_for_action('/users/lst')
1272 and it will create the URI /users/the-list.
1278 sub uri_for_action {
1279 my ( $c, $path, @args ) = @_;
1280 my $action = blessed($path)
1282 : $c->dispatcher->get_action_by_path($path);
1283 unless (defined $action) {
1284 croak "Can't find action for path '$path'";
1286 return $c->uri_for( $action, @args );
1289 =head2 $c->welcome_message
1291 Returns the Catalyst welcome HTML page.
1295 sub welcome_message {
1297 my $name = $c->config->{name};
1298 my $logo = $c->uri_for('/static/images/catalyst_logo.png');
1299 my $prefix = Catalyst::Utils::appprefix( ref $c );
1300 $c->response->content_type('text/html; charset=utf-8');
1302 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
1303 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
1304 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
1306 <meta http-equiv="Content-Language" content="en" />
1307 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
1308 <title>$name on Catalyst $VERSION</title>
1309 <style type="text/css">
1312 background-color: #eee;
1319 margin-bottom: 10px;
1321 background-color: #ccc;
1322 border: 1px solid #aaa;
1327 font-family: verdana, tahoma, sans-serif;
1330 font-family: verdana, tahoma, sans-serif;
1333 text-decoration: none;
1335 border-bottom: 1px dotted #bbb;
1337 :link:hover, :visited:hover {
1350 background-color: #fff;
1351 border: 1px solid #aaa;
1355 font-weight: normal;
1377 <h1><span id="appname">$name</span> on <a href="http://catalyst.perl.org">Catalyst</a>
1382 <img src="$logo" alt="Catalyst Logo" />
1384 <p>Welcome to the world of Catalyst.
1385 This <a href="http://en.wikipedia.org/wiki/MVC">MVC</a>
1386 framework will make web development something you had
1387 never expected it to be: Fun, rewarding, and quick.</p>
1388 <h2>What to do now?</h2>
1389 <p>That really depends on what <b>you</b> want to do.
1390 We do, however, provide you with a few starting points.</p>
1391 <p>If you want to jump right into web development with Catalyst
1392 you might want to start with a tutorial.</p>
1393 <pre>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Tutorial.pod">Catalyst::Manual::Tutorial</a></code>
1395 <p>Afterwards you can go on to check out a more complete look at our features.</p>
1397 <code>perldoc <a href="http://cpansearch.perl.org/dist/Catalyst-Manual/lib/Catalyst/Manual/Intro.pod">Catalyst::Manual::Intro</a>
1398 <!-- Something else should go here, but the Catalyst::Manual link seems unhelpful -->
1400 <h2>What to do next?</h2>
1401 <p>Next it's time to write an actual application. Use the
1402 helper scripts to generate <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AController%3A%3A&mode=all">controllers</a>,
1403 <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AModel%3A%3A&mode=all">models</a>, and
1404 <a href="http://cpansearch.perl.org/search?query=Catalyst%3A%3AView%3A%3A&mode=all">views</a>;
1405 they can save you a lot of work.</p>
1406 <pre><code>script/${prefix}_create.pl --help</code></pre>
1407 <p>Also, be sure to check out the vast and growing
1408 collection of <a href="http://search.cpan.org/search?query=Catalyst">plugins for Catalyst on CPAN</a>;
1409 you are likely to find what you need there.
1413 <p>Catalyst has a very active community. Here are the main places to
1414 get in touch with us.</p>
1417 <a href="http://dev.catalyst.perl.org">Wiki</a>
1420 <a href="http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst">Mailing-List</a>
1423 <a href="irc://irc.perl.org/catalyst">IRC channel #catalyst on irc.perl.org</a>
1426 <h2>In conclusion</h2>
1427 <p>The Catalyst team hopes you will enjoy using Catalyst as much
1428 as we enjoyed making it. Please contact us if you have ideas
1429 for improvement or other feedback.</p>
1437 =head1 INTERNAL METHODS
1439 These methods are not meant to be used by end users.
1441 =head2 $c->components
1443 Returns a hash of components.
1447 # FIXME - We deal with ->components({'Foo' => 'Bar'})
1448 # however we DO NOT deal with ->components->{Foo} = 'Bar'
1449 # We should return a locked hash back to the user? So that if they try the latter, they
1450 # get breakage, rather than their addition being silently ignored?
1451 around components => sub {
1456 return $class->$orig if ( !$comps );
1458 # FIXME: should this ugly kludge exist?
1459 $class->setup_config unless defined $class->container;
1461 # FIXME: should there be a warning here, not to use this accessor to create the components?
1462 my $components = {};
1465 $containers->{$_} = $class->container->get_sub_container($_) for qw(model view controller);
1467 for my $component ( keys %$comps ) {
1468 $components->{ $component } = $comps->{$component};
1470 my ($type, $name) = _get_component_type_name($component);
1472 $containers->{$type}->add_service(Catalyst::IOC::BlockInjection->new( name => $name, block => sub { return $class->setup_component($component) } ));
1475 return $class->$orig($components);
1478 =head2 $c->context_class
1480 Returns or sets the context class.
1484 Returns a hashref containing coderefs and execution counts (needed for
1485 deep recursion detection).
1489 Returns the number of actions on the current internal execution stack.
1493 Dispatches a request to actions.
1497 sub dispatch { my $c = shift; $c->dispatcher->dispatch( $c, @_ ) }
1499 =head2 $c->dispatcher_class
1501 Returns or sets the dispatcher class.
1503 =head2 $c->dump_these
1505 Returns a list of 2-element array references (name, structure) pairs
1506 that will be dumped on the error page in debug mode.
1512 [ Request => $c->req ],
1513 [ Response => $c->res ],
1514 [ Stash => $c->stash ],
1515 [ Config => $c->config ];
1518 =head2 $c->engine_class
1520 Returns or sets the engine class.
1522 =head2 $c->execute( $class, $coderef )
1524 Execute a coderef in given class and catch exceptions. Errors are available
1530 my ( $c, $class, $code ) = @_;
1531 $class = $c->component($class) || $class;
1534 if ( $c->depth >= $RECURSION ) {
1535 my $action = $code->reverse();
1536 $action = "/$action" unless $action =~ /->/;
1537 my $error = qq/Deep recursion detected calling "${action}"/;
1538 $c->log->error($error);
1544 my $stats_info = $c->_stats_start_execute( $code ) if $c->use_stats;
1546 push( @{ $c->stack }, $code );
1548 no warnings 'recursion';
1549 # N.B. This used to be combined, but I have seen $c get clobbered if so, and
1550 # I have no idea how, ergo $ret (which appears to fix the issue)
1551 eval { my $ret = $code->execute( $class, $c, @{ $c->req->args } ) || 0; $c->state( $ret ) };
1553 $c->_stats_finish_execute( $stats_info ) if $c->use_stats and $stats_info;
1555 my $last = pop( @{ $c->stack } );
1557 if ( my $error = $@ ) {
1558 if ( blessed($error) and $error->isa('Catalyst::Exception::Detach') ) {
1559 $error->rethrow if $c->depth > 1;
1561 elsif ( blessed($error) and $error->isa('Catalyst::Exception::Go') ) {
1562 $error->rethrow if $c->depth > 0;
1565 unless ( ref $error ) {
1566 no warnings 'uninitialized';
1568 my $class = $last->class;
1569 my $name = $last->name;
1570 $error = qq/Caught exception in $class->$name "$error"/;
1579 sub _stats_start_execute {
1580 my ( $c, $code ) = @_;
1581 my $appclass = ref($c) || $c;
1582 return if ( ( $code->name =~ /^_.*/ )
1583 && ( !$appclass->config->{show_internal_actions} ) );
1585 my $action_name = $code->reverse();
1586 $c->counter->{$action_name}++;
1588 my $action = $action_name;
1589 $action = "/$action" unless $action =~ /->/;
1591 # determine if the call was the result of a forward
1592 # this is done by walking up the call stack and looking for a calling
1593 # sub of Catalyst::forward before the eval
1595 for my $index ( 2 .. 11 ) {
1597 if ( ( caller($index) )[0] eq 'Catalyst'
1598 && ( caller($index) )[3] eq '(eval)' );
1600 if ( ( caller($index) )[3] =~ /forward$/ ) {
1601 $callsub = ( caller($index) )[3];
1602 $action = "-> $action";
1607 my $uid = $action_name . $c->counter->{$action_name};
1609 # is this a root-level call or a forwarded call?
1610 if ( $callsub =~ /forward$/ ) {
1611 my $parent = $c->stack->[-1];
1613 # forward, locate the caller
1614 if ( defined $parent && exists $c->counter->{"$parent"} ) {
1617 parent => "$parent" . $c->counter->{"$parent"},
1623 # forward with no caller may come from a plugin
1642 sub _stats_finish_execute {
1643 my ( $c, $info ) = @_;
1644 $c->stats->profile( end => $info );
1649 Finalizes the request.
1656 for my $error ( @{ $c->error } ) {
1657 $c->log->error($error);
1660 # Allow engine to handle finalize flow (for POE)
1661 my $engine = $c->engine;
1662 if ( my $code = $engine->can('finalize') ) {
1667 $c->finalize_uploads;
1670 if ( $#{ $c->error } >= 0 ) {
1674 $c->finalize_headers;
1677 if ( $c->request->method eq 'HEAD' ) {
1678 $c->response->body('');
1686 if ($c->use_stats) {
1687 my $elapsed = sprintf '%f', $c->stats->elapsed;
1688 my $av = $elapsed == 0 ? '??' : sprintf '%.3f', 1 / $elapsed;
1690 "Request took ${elapsed}s ($av/s)\n" . $c->stats->report . "\n" );
1693 return $c->response->status;
1696 =head2 $c->finalize_body
1702 sub finalize_body { my $c = shift; $c->engine->finalize_body( $c, @_ ) }
1704 =head2 $c->finalize_cookies
1710 sub finalize_cookies { my $c = shift; $c->engine->finalize_cookies( $c, @_ ) }
1712 =head2 $c->finalize_error
1718 sub finalize_error { my $c = shift; $c->engine->finalize_error( $c, @_ ) }
1720 =head2 $c->finalize_headers
1726 sub finalize_headers {
1729 my $response = $c->response; #accessor calls can add up?
1731 # Check if we already finalized headers
1732 return if $response->finalized_headers;
1735 if ( my $location = $response->redirect ) {
1736 $c->log->debug(qq/Redirecting to "$location"/) if $c->debug;
1737 $response->header( Location => $location );
1739 if ( !$response->has_body ) {
1740 # Add a default body if none is already present
1742 qq{<html><body><p>This item has moved <a href="$location">here</a>.</p></body></html>}
1748 if ( defined $response->body && length $response->body && !$response->content_length ) {
1750 # get the length from a filehandle
1751 if ( blessed( $response->body ) && $response->body->can('read') || ref( $response->body ) eq 'GLOB' )
1753 my $stat = stat $response->body;
1754 if ( $stat && $stat->size > 0 ) {
1755 $response->content_length( $stat->size );
1758 $c->log->warn('Serving filehandle without a content-length');
1762 # everything should be bytes at this point, but just in case
1763 $response->content_length( length( $response->body ) );
1768 if ( $response->status =~ /^(1\d\d|[23]04)$/ ) {
1769 $response->headers->remove_header("Content-Length");
1770 $response->body('');
1773 $c->finalize_cookies;
1775 $c->engine->finalize_headers( $c, @_ );
1778 $response->finalized_headers(1);
1781 =head2 $c->finalize_output
1783 An alias for finalize_body.
1785 =head2 $c->finalize_read
1787 Finalizes the input after reading is complete.
1791 sub finalize_read { my $c = shift; $c->engine->finalize_read( $c, @_ ) }
1793 =head2 $c->finalize_uploads
1795 Finalizes uploads. Cleans up any temporary files.
1799 sub finalize_uploads { my $c = shift; $c->engine->finalize_uploads( $c, @_ ) }
1801 =head2 $c->get_action( $action, $namespace )
1803 Gets an action in a given namespace.
1807 sub get_action { my $c = shift; $c->dispatcher->get_action(@_) }
1809 =head2 $c->get_actions( $action, $namespace )
1811 Gets all actions of a given name in a namespace and all parent
1816 sub get_actions { my $c = shift; $c->dispatcher->get_actions( $c, @_ ) }
1818 =head2 $app->handle_request( @arguments )
1820 Called to handle each HTTP request.
1824 sub handle_request {
1825 my ( $class, @arguments ) = @_;
1827 # Always expect worst case!
1830 if ($class->debug) {
1831 my $secs = time - $START || 1;
1832 my $av = sprintf '%.3f', $COUNT / $secs;
1833 my $time = localtime time;
1834 $class->log->info("*** Request $COUNT ($av/s) [$$] [$time] ***");
1837 my $c = $class->prepare(@arguments);
1839 $status = $c->finalize;
1842 if ( my $error = $@ ) {
1844 $class->log->error(qq/Caught exception in engine "$error"/);
1849 if(my $coderef = $class->log->can('_flush')){
1850 $class->log->$coderef();
1855 =head2 $c->prepare( @arguments )
1857 Creates a Catalyst context from an engine-specific request (Apache, CGI,
1863 my ( $class, @arguments ) = @_;
1866 # After the app/ctxt split, this should become an attribute based on something passed
1867 # into the application.
1868 $class->context_class( ref $class || $class ) unless $class->context_class;
1870 my $c = $class->context_class->new({});
1872 # For on-demand data
1873 $c->request->_context($c);
1874 $c->response->_context($c);
1876 #surely this is not the most efficient way to do things...
1877 $c->stats($class->stats_class->new)->enable($c->use_stats);
1878 if ( $c->debug || $c->config->{enable_catalyst_header} ) {
1879 $c->res->headers->header( 'X-Catalyst' => $Catalyst::VERSION );
1882 #XXX reuse coderef from can
1883 # Allow engine to direct the prepare flow (for POE)
1884 if ( $c->engine->can('prepare') ) {
1885 $c->engine->prepare( $c, @arguments );
1888 $c->prepare_request(@arguments);
1889 $c->prepare_connection;
1890 $c->prepare_query_parameters;
1891 $c->prepare_headers;
1892 $c->prepare_cookies;
1895 # Prepare the body for reading, either by prepare_body
1896 # or the user, if they are using $c->read
1899 # Parse the body unless the user wants it on-demand
1900 unless ( ref($c)->config->{parse_on_demand} ) {
1905 my $method = $c->req->method || '';
1906 my $path = $c->req->path;
1907 $path = '/' unless length $path;
1908 my $address = $c->req->address || '';
1917 =head2 $c->prepare_action
1919 Prepares action. See L<Catalyst::Dispatcher>.
1923 sub prepare_action { my $c = shift; $c->dispatcher->prepare_action( $c, @_ ) }
1925 =head2 $c->prepare_body
1927 Prepares message body.
1934 return if $c->request->_has_body;
1936 # Initialize on-demand data
1937 $c->engine->prepare_body( $c, @_ );
1938 $c->prepare_parameters;
1939 $c->prepare_uploads;
1942 =head2 $c->prepare_body_chunk( $chunk )
1944 Prepares a chunk of data before sending it to L<HTTP::Body>.
1946 See L<Catalyst::Engine>.
1950 sub prepare_body_chunk {
1952 $c->engine->prepare_body_chunk( $c, @_ );
1955 =head2 $c->prepare_body_parameters
1957 Prepares body parameters.
1961 sub prepare_body_parameters {
1963 $c->engine->prepare_body_parameters( $c, @_ );
1966 =head2 $c->prepare_connection
1968 Prepares connection.
1972 sub prepare_connection {
1974 $c->engine->prepare_connection( $c, @_ );
1977 =head2 $c->prepare_cookies
1983 sub prepare_cookies { my $c = shift; $c->engine->prepare_cookies( $c, @_ ) }
1985 =head2 $c->prepare_headers
1991 sub prepare_headers { my $c = shift; $c->engine->prepare_headers( $c, @_ ) }
1993 =head2 $c->prepare_parameters
1995 Prepares parameters.
1999 sub prepare_parameters {
2001 $c->prepare_body_parameters;
2002 $c->engine->prepare_parameters( $c, @_ );
2005 =head2 $c->prepare_path
2007 Prepares path and base.
2011 sub prepare_path { my $c = shift; $c->engine->prepare_path( $c, @_ ) }
2013 =head2 $c->prepare_query_parameters
2015 Prepares query parameters.
2019 sub prepare_query_parameters {
2022 $c->engine->prepare_query_parameters( $c, @_ );
2025 =head2 $c->log_request
2027 Writes information about the request to the debug logs. This includes:
2031 =item * Request method, path, and remote IP address
2033 =item * Query keywords (see L<Catalyst::Request/query_keywords>)
2035 =item * Request parameters
2037 =item * File uploads
2046 return unless $c->debug;
2048 my($dump) = grep {$_->[0] eq 'Request' } $c->dump_these;
2049 my $request = $dump->[1];
2051 my ( $method, $path, $address ) = ( $request->method, $request->path, $request->address );
2053 $path = '/' unless length $path;
2055 $c->log->debug(qq/"$method" request for "$path" from "$address"/);
2057 $c->log_request_headers($request->headers);
2059 if ( my $keywords = $request->query_keywords ) {
2060 $c->log->debug("Query keywords are: $keywords");
2063 $c->log_request_parameters( query => $request->query_parameters, $request->_has_body ? (body => $request->body_parameters) : () );
2065 $c->log_request_uploads($request);
2068 =head2 $c->log_response
2070 Writes information about the response to the debug logs by calling
2071 C<< $c->log_response_status_line >> and C<< $c->log_response_headers >>.
2078 return unless $c->debug;
2080 my($dump) = grep {$_->[0] eq 'Response' } $c->dump_these;
2081 my $response = $dump->[1];
2083 $c->log_response_status_line($response);
2084 $c->log_response_headers($response->headers);
2087 =head2 $c->log_response_status_line($response)
2089 Writes one line of information about the response to the debug logs. This includes:
2093 =item * Response status code
2095 =item * Content-Type header (if present)
2097 =item * Content-Length header (if present)
2103 sub log_response_status_line {
2104 my ($c, $response) = @_;
2108 'Response Code: %s; Content-Type: %s; Content-Length: %s',
2109 $response->status || 'unknown',
2110 $response->headers->header('Content-Type') || 'unknown',
2111 $response->headers->header('Content-Length') || 'unknown'
2116 =head2 $c->log_response_headers($headers);
2118 Hook method which can be wrapped by plugins to log the responseheaders.
2119 No-op in the default implementation.
2123 sub log_response_headers {}
2125 =head2 $c->log_request_parameters( query => {}, body => {} )
2127 Logs request parameters to debug logs
2131 sub log_request_parameters {
2133 my %all_params = @_;
2135 return unless $c->debug;
2137 my $column_width = Catalyst::Utils::term_width() - 44;
2138 foreach my $type (qw(query body)) {
2139 my $params = $all_params{$type};
2140 next if ! keys %$params;
2141 my $t = Text::SimpleTable->new( [ 35, 'Parameter' ], [ $column_width, 'Value' ] );
2142 for my $key ( sort keys %$params ) {
2143 my $param = $params->{$key};
2144 my $value = defined($param) ? $param : '';
2145 $t->row( $key, ref $value eq 'ARRAY' ? ( join ', ', @$value ) : $value );
2147 $c->log->debug( ucfirst($type) . " Parameters are:\n" . $t->draw );
2151 =head2 $c->log_request_uploads
2153 Logs file uploads included in the request to the debug logs.
2154 The parameter name, filename, file type, and file size are all included in
2159 sub log_request_uploads {
2161 my $request = shift;
2162 return unless $c->debug;
2163 my $uploads = $request->uploads;
2164 if ( keys %$uploads ) {
2165 my $t = Text::SimpleTable->new(
2166 [ 12, 'Parameter' ],
2171 for my $key ( sort keys %$uploads ) {
2172 my $upload = $uploads->{$key};
2173 for my $u ( ref $upload eq 'ARRAY' ? @{$upload} : ($upload) ) {
2174 $t->row( $key, $u->filename, $u->type, $u->size );
2177 $c->log->debug( "File Uploads are:\n" . $t->draw );
2181 =head2 $c->log_request_headers($headers);
2183 Hook method which can be wrapped by plugins to log the request headers.
2184 No-op in the default implementation.
2188 sub log_request_headers {}
2190 =head2 $c->log_headers($type => $headers)
2192 Logs L<HTTP::Headers> (either request or response) to the debug logs.
2199 my $headers = shift; # an HTTP::Headers instance
2201 return unless $c->debug;
2203 my $column_width = Catalyst::Utils::term_width() - 28;
2204 my $t = Text::SimpleTable->new( [ 15, 'Header Name' ], [ $column_width, 'Value' ] );
2207 my ( $name, $value ) = @_;
2208 $t->row( $name, $value );
2211 $c->log->debug( ucfirst($type) . " Headers:\n" . $t->draw );
2215 =head2 $c->prepare_read
2217 Prepares the input for reading.
2221 sub prepare_read { my $c = shift; $c->engine->prepare_read( $c, @_ ) }
2223 =head2 $c->prepare_request
2225 Prepares the engine request.
2229 sub prepare_request { my $c = shift; $c->engine->prepare_request( $c, @_ ) }
2231 =head2 $c->prepare_uploads
2237 sub prepare_uploads {
2240 $c->engine->prepare_uploads( $c, @_ );
2243 =head2 $c->prepare_write
2245 Prepares the output for writing.
2249 sub prepare_write { my $c = shift; $c->engine->prepare_write( $c, @_ ) }
2251 =head2 $c->request_class
2253 Returns or sets the request class. Defaults to L<Catalyst::Request>.
2255 =head2 $c->response_class
2257 Returns or sets the response class. Defaults to L<Catalyst::Response>.
2259 =head2 $c->read( [$maxlength] )
2261 Reads a chunk of data from the request body. This method is designed to
2262 be used in a while loop, reading C<$maxlength> bytes on every call.
2263 C<$maxlength> defaults to the size of the request if not specified.
2265 You have to set C<< MyApp->config(parse_on_demand => 1) >> to use this
2268 Warning: If you use read(), Catalyst will not process the body,
2269 so you will not be able to access POST parameters or file uploads via
2270 $c->request. You must handle all body parsing yourself.
2274 sub read { my $c = shift; return $c->engine->read( $c, @_ ) }
2282 sub run { my $c = shift; return $c->engine->run( $c, @_ ) }
2284 =head2 $c->set_action( $action, $code, $namespace, $attrs )
2286 Sets an action in a given namespace.
2290 sub set_action { my $c = shift; $c->dispatcher->set_action( $c, @_ ) }
2292 =head2 $c->setup_actions($component)
2294 Sets up actions for a component.
2298 sub setup_actions { my $c = shift; $c->dispatcher->setup_actions( $c, @_ ) }
2300 =head2 $c->setup_config
2307 my %args = %{ $class->config || {} };
2309 my @container_classes = ( "${class}::Container", 'Catalyst::IOC::Container');
2310 unshift @container_classes, delete $args{container_class} if exists $args{container_class};
2312 my $container_class = Class::MOP::load_first_existing_class(@container_classes);
2314 my $container = $container_class->new( %args, name => "$class" );
2315 $class->container($container);
2317 my $config = $container->resolve(service => 'config');
2318 $class->config($config);
2319 $class->finalize_config; # back-compat
2322 =head2 $c->finalize_config
2326 sub finalize_config { }
2328 =head2 $c->setup_components
2330 This method is called internally to set up the application's components.
2332 It finds modules by calling the L<locate_components> method, expands them to
2333 package names with the L<expand_component_module> method, and then installs
2334 each component into the application.
2336 The C<setup_components> config option is passed to both of the above methods.
2338 Installation of each component is performed by the L<setup_component> method,
2343 sub setup_components {
2346 my $config = $class->config->{ setup_components };
2347 my $search_extra = $config->{ search_extra };
2349 my @comps = $class->locate_components($config);
2350 my %comps = map { $_ => 1 } @comps;
2352 my $deprecatedcatalyst_component_names = grep { /::[CMV]::/ } @comps;
2353 $class->log->warn(qq{Your application is using the deprecated ::[MVC]:: type naming scheme.\n}.
2354 qq{Please switch your class names to ::Model::, ::View:: and ::Controller: as appropriate.\n}
2355 ) if $deprecatedcatalyst_component_names;
2357 for my $component ( @comps ) {
2359 # We pass ignore_loaded here so that overlay files for (e.g.)
2360 # Model::DBI::Schema sub-classes are loaded - if it's in @comps
2361 # we know M::P::O found a file on disk so this is safe
2363 Catalyst::Utils::ensure_class_loaded( $component, { ignore_loaded => 1 } );
2367 $containers->{$_} = $class->container->get_sub_container($_) for qw(model view controller);
2369 for my $component (@comps) {
2370 my $instance = $class->components->{ $component } = $class->setup_component($component);
2371 if ( my ($type, $name) = _get_component_type_name($component, $search_extra) ) {
2372 $containers->{$type}->add_service(Catalyst::IOC::BlockInjection->new( name => $name, block => sub { return $instance } ));
2374 my @expanded_components = $instance->can('expand_modules')
2375 ? $instance->expand_modules( $component, $config )
2376 : $class->expand_component_module( $component, $config );
2377 for my $component (@expanded_components) {
2378 next if $comps{$component};
2380 $deprecatedcatalyst_component_names = grep { /::[CMV]::/ } @expanded_components;
2381 $class->log->warn(qq{Your application is using the deprecated ::[MVC]:: type naming scheme.\n}.
2382 qq{Please switch your class names to ::Model::, ::View:: and ::Controller: as appropriate.\n}
2383 ) if $deprecatedcatalyst_component_names;
2385 if (my ($type, $name) = _get_component_type_name($component, $search_extra)) {
2386 $containers->{$type}->add_service(Catalyst::IOC::BlockInjection->new( name => $name, block => sub { return $class->setup_component($component) } ));
2389 # FIXME - Remove this!!
2390 $class->components->{ $component } = $class->setup_component($component);
2394 $containers->{model}->make_single_default;
2395 $containers->{view}->make_single_default;
2398 # FIXME: should this sub exist?
2399 # should it be moved to Catalyst::Utils,
2400 # or replaced by something already existing there?
2401 sub _get_component_type_name {
2402 my ( $component, $search_extra) = @_;
2403 $search_extra ||= [];
2404 my @search_extra = map { s/^:://; lc $_ } @$search_extra;
2406 my @parts = split /::/, $component;
2408 if (scalar @parts == 1) {
2409 return (undef, $component);
2412 while (my $type = shift @parts) {
2413 return ('controller', join '::', @parts)
2414 if $type =~ /^(c|controller)$/i;
2416 return ('model', join '::', @parts)
2417 if $type =~ /^(m|model)$/i;
2419 return ('view', join '::', @parts)
2420 if $type =~ /^(v|view)$/i;
2422 return (_get_component_type($component), join '::', @parts)
2423 if @search_extra and ( grep { lc $type eq $_ } @search_extra );
2427 sub _get_component_type {
2428 my ( $instance ) = @_;
2430 return 'controller' if $instance->isa('Catalyst::Controller');
2431 return 'model' if $instance->isa('Catalyst::Model');
2432 return 'view' if $instance->isa('Catalyst::View');
2435 =head2 $c->locate_components( $setup_component_config )
2437 This method is meant to provide a list of component modules that should be
2438 setup for the application. By default, it will use L<Module::Pluggable>.
2440 Specify a C<setup_components> config option to pass additional options directly
2441 to L<Module::Pluggable>. To add additional search paths, specify a key named
2442 C<search_extra> as an array reference. Items in the array beginning with C<::>
2443 will have the application class name prepended to them.
2447 sub locate_components {
2451 my @paths = qw( ::Controller ::C ::Model ::M ::View ::V );
2452 my $extra = delete $config->{ search_extra } || [];
2454 push @paths, @$extra;
2456 my $locator = Module::Pluggable::Object->new(
2457 search_path => [ map { s/^(?=::)/$class/; $_; } @paths ],
2461 # XXX think about ditching this sort entirely
2462 my @comps = sort { length $a <=> length $b } $locator->plugins;
2467 =head2 $c->expand_component_module( $component, $setup_component_config )
2469 Components found by C<locate_components> will be passed to this method, which
2470 is expected to return a list of component (package) names to be set up.
2474 sub expand_component_module {
2475 my ($class, $module) = @_;
2476 return Devel::InnerPackage::list_packages( $module );
2479 =head2 $c->setup_component
2483 ## FIXME - Why the hell do we try calling the ->COMPONENT method twice, this is madness!?!
2484 sub setup_component {
2485 my( $class, $component ) = @_;
2487 unless ( $component->can( 'COMPONENT' ) ) {
2491 my $suffix = Catalyst::Utils::class2classsuffix( $component );
2492 my $config = $class->config->{ $suffix } || {};
2493 # Stash catalyst_component_name in the config here, so that custom COMPONENT
2494 # methods also pass it. local to avoid pointlessly shitting in config
2495 # for the debug screen, as $component is already the key name.
2496 local $config->{catalyst_component_name} = $component;
2498 my $instance = eval { $component->COMPONENT( $class, $config ); };
2500 if ( my $error = $@ ) {
2502 Catalyst::Exception->throw(
2503 message => qq/Couldn't instantiate component "$component", "$error"/
2506 elsif (!blessed $instance) {
2507 my $metaclass = Moose::Util::find_meta($component);
2508 my $method_meta = $metaclass->find_method_by_name('COMPONENT');
2509 my $component_method_from = $method_meta->associated_metaclass->name;
2510 my $value = defined($instance) ? $instance : 'undef';
2511 Catalyst::Exception->throw(
2513 qq/Couldn't instantiate component "$component", COMPONENT() method (from $component_method_from) didn't return an object-like value (value was $value)./
2520 =head2 $c->setup_dispatcher
2526 sub setup_dispatcher {
2527 my ( $class, $dispatcher ) = @_;
2530 $dispatcher = 'Catalyst::Dispatcher::' . $dispatcher;
2533 if ( my $env = Catalyst::Utils::env_value( $class, 'DISPATCHER' ) ) {
2534 $dispatcher = 'Catalyst::Dispatcher::' . $env;
2537 unless ($dispatcher) {
2538 $dispatcher = $class->dispatcher_class;
2541 Class::MOP::load_class($dispatcher);
2543 # dispatcher instance
2544 $class->dispatcher( $dispatcher->new );
2547 =head2 $c->setup_engine
2554 my ( $class, $engine ) = @_;
2557 $engine = 'Catalyst::Engine::' . $engine;
2560 if ( my $env = Catalyst::Utils::env_value( $class, 'ENGINE' ) ) {
2561 $engine = 'Catalyst::Engine::' . $env;
2564 if ( $ENV{MOD_PERL} ) {
2565 my $meta = Class::MOP::get_metaclass_by_name($class);
2567 # create the apache method
2568 $meta->add_method('apache' => sub { shift->engine->apache });
2570 my ( $software, $version ) =
2571 $ENV{MOD_PERL} =~ /^(\S+)\/(\d+(?:[\.\_]\d+)+)/;
2574 $version =~ s/(\.[^.]+)\./$1/g;
2576 if ( $software eq 'mod_perl' ) {
2580 if ( $version >= 1.99922 ) {
2581 $engine = 'Catalyst::Engine::Apache2::MP20';
2584 elsif ( $version >= 1.9901 ) {
2585 $engine = 'Catalyst::Engine::Apache2::MP19';
2588 elsif ( $version >= 1.24 ) {
2589 $engine = 'Catalyst::Engine::Apache::MP13';
2593 Catalyst::Exception->throw( message =>
2594 qq/Unsupported mod_perl version: $ENV{MOD_PERL}/ );
2599 # install the correct mod_perl handler
2600 if ( $version >= 1.9901 ) {
2601 *handler = sub : method {
2602 shift->handle_request(@_);
2606 *handler = sub ($$) { shift->handle_request(@_) };
2611 elsif ( $software eq 'Zeus-Perl' ) {
2612 $engine = 'Catalyst::Engine::Zeus';
2616 Catalyst::Exception->throw(
2617 message => qq/Unsupported mod_perl: $ENV{MOD_PERL}/ );
2622 $engine = $class->engine_class;
2625 Class::MOP::load_class($engine);
2627 # check for old engines that are no longer compatible
2629 if ( $engine->isa('Catalyst::Engine::Apache')
2630 && !Catalyst::Engine::Apache->VERSION )
2635 elsif ( $engine->isa('Catalyst::Engine::Server::Base')
2636 && Catalyst::Engine::Server->VERSION le '0.02' )
2641 elsif ($engine->isa('Catalyst::Engine::HTTP::POE')
2642 && $engine->VERSION eq '0.01' )
2647 elsif ($engine->isa('Catalyst::Engine::Zeus')
2648 && $engine->VERSION eq '0.01' )
2654 Catalyst::Exception->throw( message =>
2655 qq/Engine "$engine" is not supported by this version of Catalyst/
2660 $class->engine( $engine->new );
2663 =head2 $c->setup_home
2665 Sets up the home directory.
2670 my ( $class, $home ) = @_;
2672 if ( my $env = Catalyst::Utils::env_value( $class, 'HOME' ) ) {
2676 $home ||= Catalyst::Utils::home($class);
2679 #I remember recently being scolded for assigning config values like this
2680 $class->config->{home} ||= $home;
2681 $class->config->{root} ||= Path::Class::Dir->new($home)->subdir('root');
2685 =head2 $c->setup_log
2687 Sets up log by instantiating a L<Catalyst::Log|Catalyst::Log> object and
2688 passing it to C<log()>. Pass in a comma-delimited list of levels to set the
2691 This method also installs a C<debug> method that returns a true value into the
2692 catalyst subclass if the "debug" level is passed in the comma-delimited list,
2693 or if the C<$CATALYST_DEBUG> environment variable is set to a true value.
2695 Note that if the log has already been setup, by either a previous call to
2696 C<setup_log> or by a call such as C<< __PACKAGE__->log( MyLogger->new ) >>,
2697 that this method won't actually set up the log object.
2702 my ( $class, $levels ) = @_;
2705 $levels =~ s/^\s+//;
2706 $levels =~ s/\s+$//;
2707 my %levels = map { $_ => 1 } split /\s*,\s*/, $levels;
2709 my $env_debug = Catalyst::Utils::env_value( $class, 'DEBUG' );
2710 if ( defined $env_debug ) {
2711 $levels{debug} = 1 if $env_debug; # Ugly!
2712 delete($levels{debug}) unless $env_debug;
2715 unless ( $class->log ) {
2716 $class->log( Catalyst::Log->new(keys %levels) );
2719 if ( $levels{debug} ) {
2720 Class::MOP::get_metaclass_by_name($class)->add_method('debug' => sub { 1 });
2721 $class->log->debug('Debug messages enabled');
2725 =head2 $c->setup_plugins
2731 =head2 $c->setup_stats
2733 Sets up timing statistics class.
2738 my ( $class, $stats ) = @_;
2740 Catalyst::Utils::ensure_class_loaded($class->stats_class);
2742 my $env = Catalyst::Utils::env_value( $class, 'STATS' );
2743 if ( defined($env) ? $env : ($stats || $class->debug ) ) {
2744 Class::MOP::get_metaclass_by_name($class)->add_method('use_stats' => sub { 1 });
2745 $class->log->debug('Statistics enabled');
2750 =head2 $c->registered_plugins
2752 Returns a sorted list of the plugins which have either been stated in the
2753 import list or which have been added via C<< MyApp->plugin(@args); >>.
2755 If passed a given plugin name, it will report a boolean value indicating
2756 whether or not that plugin is loaded. A fully qualified name is required if
2757 the plugin name does not begin with C<Catalyst::Plugin::>.
2759 if ($c->registered_plugins('Some::Plugin')) {
2767 sub registered_plugins {
2769 return sort keys %{ $proto->_plugins } unless @_;
2771 return 1 if exists $proto->_plugins->{$plugin};
2772 return exists $proto->_plugins->{"Catalyst::Plugin::$plugin"};
2775 sub _register_plugin {
2776 my ( $proto, $plugin, $instant ) = @_;
2777 my $class = ref $proto || $proto;
2779 Class::MOP::load_class( $plugin );
2780 $class->log->warn( "$plugin inherits from 'Catalyst::Component' - this is deprecated and will not work in 5.81" )
2781 if $plugin->isa( 'Catalyst::Component' );
2782 $proto->_plugins->{$plugin} = 1;
2784 my $meta = Class::MOP::get_metaclass_by_name($class);
2785 $meta->superclasses($plugin, $meta->superclasses);
2791 my ( $class, $plugins ) = @_;
2793 $class->_plugins( {} ) unless $class->_plugins;
2794 $plugins = Data::OptList::mkopt($plugins || []);
2797 [ Catalyst::Utils::resolve_namespace(
2798 $class . '::Plugin',
2799 'Catalyst::Plugin', $_->[0]
2805 for my $plugin ( reverse @plugins ) {
2806 Class::MOP::load_class($plugin->[0], $plugin->[1]);
2807 my $meta = find_meta($plugin->[0]);
2808 next if $meta && $meta->isa('Moose::Meta::Role');
2810 $class->_register_plugin($plugin->[0]);
2814 map { $_->[0]->name, $_->[1] }
2815 grep { blessed($_->[0]) && $_->[0]->isa('Moose::Meta::Role') }
2816 map { [find_meta($_->[0]), $_->[1]] }
2819 Moose::Util::apply_all_roles(
2827 Returns an arrayref of the internal execution stack (actions that are
2828 currently executing).
2832 Returns the current timing statistics object. By default Catalyst uses
2833 L<Catalyst::Stats|Catalyst::Stats>, but can be set otherwise with
2834 L<< stats_class|/"$c->stats_class" >>.
2836 Even if L<< -Stats|/"-Stats" >> is not enabled, the stats object is still
2837 available. By enabling it with C< $c->stats->enabled(1) >, it can be used to
2838 profile explicitly, although MyApp.pm still won't profile nor output anything
2841 =head2 $c->stats_class
2843 Returns or sets the stats (timing statistics) class. L<Catalyst::Stats|Catalyst::Stats> is used by default.
2845 =head2 $c->use_stats
2847 Returns 1 when L<< stats collection|/"-Stats" >> is enabled.
2849 Note that this is a static method, not an accessor and should be overridden
2850 by declaring C<sub use_stats { 1 }> in your MyApp.pm, not by calling C<< $c->use_stats(1) >>.
2857 =head2 $c->write( $data )
2859 Writes $data to the output stream. When using this method directly, you
2860 will need to manually set the C<Content-Length> header to the length of
2861 your output data, if known.
2868 # Finalize headers if someone manually writes output
2869 $c->finalize_headers;
2871 return $c->engine->write( $c, @_ );
2876 Returns the Catalyst version number. Mostly useful for "powered by"
2877 messages in template systems.
2881 sub version { return $Catalyst::VERSION }
2883 =head1 CONFIGURATION
2885 There are a number of 'base' config variables which can be set:
2891 C<default_model> - The default model picked if you say C<< $c->model >>. See L<< /$c->model($name) >>.
2895 C<default_view> - The default view to be rendered or returned when C<< $c->view >> is called. See L<< /$c->view($name) >>.
2899 C<home> - The application home directory. In an uninstalled application,
2900 this is the top level application directory. In an installed application,
2901 this will be the directory containing C<< MyApp.pm >>.
2905 C<ignore_frontend_proxy> - See L</PROXY SUPPORT>
2909 C<name> - The name of the application in debug messages and the debug and
2914 C<parse_on_demand> - The request body (for example file uploads) will not be parsed
2915 until it is accessed. This allows you to (for example) check authentication (and reject
2916 the upload) before actually recieving all the data. See L</ON-DEMAND PARSER>
2920 C<root> - The root directory for templates. Usually this is just a
2921 subdirectory of the home directory, but you can set it to change the
2922 templates to a different directory.
2926 C<search_extra> - Array reference passed to Module::Pluggable to for additional
2927 namespaces from which components will be loaded (and constructed and stored in
2928 C<< $c->components >>).
2932 C<show_internal_actions> - If true, causes internal actions such as C<< _DISPATCH >>
2933 to be shown in hit debug tables in the test server.
2937 C<use_request_uri_for_path> - Controlls if the C<REQUEST_URI> or C<PATH_INFO> environment
2938 variable should be used for determining the request path. See L<Catalyst::Engine::CGI/PATH DECODING>
2939 for more information.
2943 C<using_frontend_proxy> - See L</PROXY SUPPORT>.
2947 =head1 INTERNAL ACTIONS
2949 Catalyst uses internal actions like C<_DISPATCH>, C<_BEGIN>, C<_AUTO>,
2950 C<_ACTION>, and C<_END>. These are by default not shown in the private
2951 action table, but you can make them visible with a config parameter.
2953 MyApp->config(show_internal_actions => 1);
2955 =head1 ON-DEMAND PARSER
2957 The request body is usually parsed at the beginning of a request,
2958 but if you want to handle input yourself, you can enable on-demand
2959 parsing with a config parameter.
2961 MyApp->config(parse_on_demand => 1);
2963 =head1 PROXY SUPPORT
2965 Many production servers operate using the common double-server approach,
2966 with a lightweight frontend web server passing requests to a larger
2967 backend server. An application running on the backend server must deal
2968 with two problems: the remote user always appears to be C<127.0.0.1> and
2969 the server's hostname will appear to be C<localhost> regardless of the
2970 virtual host that the user connected through.
2972 Catalyst will automatically detect this situation when you are running
2973 the frontend and backend servers on the same machine. The following
2974 changes are made to the request.
2976 $c->req->address is set to the user's real IP address, as read from
2977 the HTTP X-Forwarded-For header.
2979 The host value for $c->req->base and $c->req->uri is set to the real
2980 host, as read from the HTTP X-Forwarded-Host header.
2982 Additionally, you may be running your backend application on an insecure
2983 connection (port 80) while your frontend proxy is running under SSL. If there
2984 is a discrepancy in the ports, use the HTTP header C<X-Forwarded-Port> to
2985 tell Catalyst what port the frontend listens on. This will allow all URIs to
2986 be created properly.
2988 In the case of passing in:
2990 X-Forwarded-Port: 443
2992 All calls to C<uri_for> will result in an https link, as is expected.
2994 Obviously, your web server must support these headers for this to work.
2996 In a more complex server farm environment where you may have your
2997 frontend proxy server(s) on different machines, you will need to set a
2998 configuration option to tell Catalyst to read the proxied data from the
3001 MyApp->config(using_frontend_proxy => 1);
3003 If you do not wish to use the proxy support at all, you may set:
3005 MyApp->config(ignore_frontend_proxy => 1);
3007 =head1 THREAD SAFETY
3009 Catalyst has been tested under Apache 2's threading C<mpm_worker>,
3010 C<mpm_winnt>, and the standalone forking HTTP server on Windows. We
3011 believe the Catalyst core to be thread-safe.
3013 If you plan to operate in a threaded environment, remember that all other
3014 modules you are using must also be thread-safe. Some modules, most notably
3015 L<DBD::SQLite>, are not thread-safe.
3021 Join #catalyst on irc.perl.org.
3025 http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst
3026 http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/catalyst-dev
3030 http://catalyst.perl.org
3034 http://dev.catalyst.perl.org
3038 =head2 L<Task::Catalyst> - All you need to start with Catalyst
3040 =head2 L<Catalyst::Manual> - The Catalyst Manual
3042 =head2 L<Catalyst::Component>, L<Catalyst::Controller> - Base classes for components
3044 =head2 L<Catalyst::Engine> - Core engine
3046 =head2 L<Catalyst::Log> - Log class.
3048 =head2 L<Catalyst::Request> - Request object
3050 =head2 L<Catalyst::Response> - Response object
3052 =head2 L<Catalyst::Test> - The test suite.
3054 =head1 PROJECT FOUNDER
3056 sri: Sebastian Riedel <sri@cpan.org>
3062 acme: Leon Brocard <leon@astray.com>
3064 abraxxa: Alexander Hartmaier <abraxxa@cpan.org>
3068 Andrew Ford E<lt>A.Ford@ford-mason.co.ukE<gt>
3074 andyg: Andy Grundman <andy@hybridized.org>
3076 audreyt: Audrey Tang
3078 bricas: Brian Cassidy <bricas@cpan.org>
3080 Caelum: Rafael Kitover <rkitover@io.com>
3082 chansen: Christian Hansen
3084 chicks: Christopher Hicks
3086 Chisel Wright C<pause@herlpacker.co.uk>
3088 Danijel Milicevic C<me@danijel.de>
3090 David Kamholz E<lt>dkamholz@cpan.orgE<gt>
3092 David Naughton, C<naughton@umn.edu>
3096 dhoss: Devin Austin <dhoss@cpan.org>
3098 dkubb: Dan Kubb <dan.kubb-cpan@onautopilot.com>
3102 dwc: Daniel Westermann-Clark <danieltwc@cpan.org>
3104 esskar: Sascha Kiefer
3106 fireartist: Carl Franks <cfranks@cpan.org>
3108 frew: Arthur Axel "fREW" Schmidt <frioux@gmail.com>
3110 gabb: Danijel Milicevic
3114 Gavin Henry C<ghenry@perl.me.uk>
3118 groditi: Guillermo Roditi <groditi@gmail.com>
3120 hobbs: Andrew Rodland <andrew@cleverdomain.org>
3122 ilmari: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org>
3124 jcamacho: Juan Camacho
3126 jester: Jesse Sheidlower C<jester@panix.com>
3128 jhannah: Jay Hannah <jay@jays.net>
3134 jon: Jon Schutz <jjschutz@cpan.org>
3136 Jonathan Rockway C<< <jrockway@cpan.org> >>
3138 Kieren Diment C<kd@totaldatasolution.com>
3140 konobi: Scott McWhirter <konobi@cpan.org>
3142 marcus: Marcus Ramberg <mramberg@cpan.org>
3144 miyagawa: Tatsuhiko Miyagawa <miyagawa@bulknews.net>
3146 mst: Matt S. Trout <mst@shadowcatsystems.co.uk>
3150 naughton: David Naughton
3152 ningu: David Kamholz <dkamholz@cpan.org>
3154 nothingmuch: Yuval Kogman <nothingmuch@woobling.org>
3156 numa: Dan Sully <daniel@cpan.org>
3162 omega: Andreas Marienborg
3164 Oleg Kostyuk <cub.uanic@gmail.com>
3166 phaylon: Robert Sedlacek <phaylon@dunkelheit.at>
3168 rafl: Florian Ragwitz <rafl@debian.org>
3170 random: Roland Lammel <lammel@cpan.org>
3172 Robert Sedlacek C<< <rs@474.at> >>
3174 SpiceMan: Marcel Montes
3178 szbalint: Balint Szilakszi <szbalint@cpan.org>
3180 t0m: Tomas Doran <bobtfish@bobtfish.net>
3184 Viljo Marrandi C<vilts@yahoo.com>
3186 Will Hawes C<info@whawes.co.uk>
3188 willert: Sebastian Willert <willert@cpan.org>
3190 wreis: Wallace Reis <wallace@reis.org.br>
3192 Yuval Kogman, C<nothingmuch@woobling.org>
3194 rainboxx: Matthias Dietrich, C<perl@rainboxx.de>
3196 dd070: Dhaval Dhanani <dhaval070@gmail.com>
3200 Copyright (c) 2005, the above named PROJECT FOUNDER and CONTRIBUTORS.
3204 This library is free software. You can redistribute it and/or modify it under
3205 the same terms as Perl itself.
3211 __PACKAGE__->meta->make_immutable;