http://localhost:3000/handles
+See also: L<Catalyst::DispatchType::Path>
+
=item Local
When using a Local attribute, no parameters are needed, instead, the
etc.
+See also: L<Catalyst::DispatchType::Regex>
+
=item LocalRegex
A LocalRegex is similar to a Regex, except it only matches below the current
etc.
+=item Chained
+
+See L<Catalyst::DispatchType::Chained> for a description of how the chained
+dispatch type works.
+
=item Private
Last but not least, there is the Private attribute, which allows you
L<http://dev.catalyst.perl.org/wiki/FlowChart>
+=head2 DRY Controllers with Chained actions.
+
+Imagine that you would like the following paths in your application:
+
+=over
+
+=item B</cd/<ID>/track/<ID>>
+
+Displays info on a particular track.
+
+In the case of a multi-volume CD, this is the track sequence.
+
+=item B</cd/<ID>/volume/<ID>/track/<ID>>
+
+Displays info on a track on a specific volume.
+
+=back
+
+Here is some example code, showing how to do this with chained controllers:
+
+ package CD::Controller;
+ use base qw/Catalyst::Controller/;
+
+ sub root : Chained('/') PathPart('/cd') CaptureArgs(1) {
+ my ($self, $c, $cd_id) = @_;
+ $c->stash->{cd_id} = $cd_id;
+ $c->stash->{cd} = $self->model('CD')->find_by_id($cd_id);
+ }
+
+ sub trackinfo : Chained('track') PathPart('') Args(0) RenderView {
+ my ($self, $c) = @_;
+ }
+
+ package CD::Controller::ByTrackSeq;
+ use base qw/CD::Controller/;
+
+ sub track : Chained('root') PathPart('track') CaptureArgs(1) {
+ my ($self, $c, $track_seq) = @_;
+ $c->stash->{track} = $self->stash->{cd}->find_track_by_seq($track_seq);
+ }
+
+ package CD::Controller::ByTrackVolNo;
+ use base qw/CD::Controller/;
+
+ sub volume : Chained('root') PathPart('volume') CaptureArgs(1) {
+ my ($self, $c, $volume) = @_;
+ $c->stash->{volume} = $volume;
+ }
+
+ sub track : Chained('volume') PathPart('track') CaptureArgs(1) {
+ my ($self, $c, $track_no) = @_;
+ $c->stash->{track} = $self->stash->{cd}->find_track_by_vol_and_track_no(
+ $c->stash->{volume}, $track_no
+ );
+ }
+
+Note that adding other actions (i.e. chain endpoints) which operate on a track
+is simply a matter of adding a new sub to CD::Controller - no code is duplicated,
+even though there are two different methods of looking up a track.
+
+This technique can be expanded as needed to fulfil your requirements - for example,
+if you inherit the first action of a chain from a base class, then mixing in a
+different base class can be used to duplicate an entire URL hieratchy at a different
+point within your application.
+
=head2 Component-based Subrequests
See L<Catalyst::Plugin::SubRequest>.
(See the L<Catalyst::Manual::Intro> Flow_Control section for more
information on passing arguments via C<forward>.)
+=head2 Chained dispatch using base classes, and inner packages.
+
+ package MyApp::Controller::Base;
+ use base qw/Catalyst::Controller/;
+
+ sub key1 : Chained('/')
=head1 Deployment
=head3 Cons
+You may have to disable mod_deflate. If you experience page hangs with
+mod_fastcgi then remove deflate.load and deflate.conf from mods-enabled/
+
=head4 More complex environment
With FastCGI, there are more things to monitor and more processes running
% perl Makefile.PL
% make catalyst_par
+You can customise the PAR creation process by special "catalyst_par_*" commands
+available from L<Module::Install::Catalyst>. You can add these commands in your
+Makefile.PL just before the line containing "catalyst;"
+
+ #Makefile.PL example with extra PAR options
+ use inc::Module::Install;
+
+ name 'MyApp';
+ all_from 'lib\MyApp.pm';
+
+ requires 'Catalyst::Runtime' => '5.80005';
+ <snip>
+ ...
+ <snip>
+
+ catalyst_par_core(1); # bundle perl core modules in the resulting PAR
+ catalyst_par_multiarch(1); # build a multi-architecture PAR file
+ catalyst_par_classes(qw/
+ Some::Additional::Module
+ Some::Other::Module
+ /); # specify additional modules you want to be included into PAR
+ catalyst;
+
+ install_script glob('script/*.pl');
+ auto_install;
+ WriteAll;
+
Congratulations! Your package "myapp.par" is ready, the following
steps are just optional.