arguments at the end of your URL, you must use regex action keys. See
L</URL Path Handling> below.
-=item * B<Chained>
-
- sub section :PathPart('section') :Chained('/') :Captures(1) { }
-
-Chained is a powerful way to handle canonical URIs of the form
-C<http://localhost:3000/section/1/item/2>. Using this URI as an example,
-in Controller::Root you can do the following:
-
- sub section_handler :PathPart('section') :Chained('/') :Captures(1) {
- my ( $self, $c ) = @_;
- $c->stash->{'section'} =
- $c->Model('Sections')->find($c->req->captures->[0]);
- }
-
- sub item_handler :PathPart('item') :Chained('/section_handler') :Args(1) {
- my ( $self, $c ) = @_;
- $c->stash->{'item'} =
- $c->stash->{'section'}->find_related('item',$c->args->[0]);
- }
-
-The subroutine C<section_handler> matches the path segment "section" as
-a child of "/". It then takes the next path segment, as referenced by
-C<:Captures(1)>, and stashes it in the arrayref
-C<$c-E<gt>req-E<gt>captures>. Since there is also a child of this
-handler, it also gets run, functioning in the same way. However, the
-C<item_handler> subroutine has the C<Args> attribute which means this
-particular routine will only run if there is exactly one argument. See
-L</Args> below for more options.
-
-A parent action can be in any controller or namespace.
-
-Multiple actions can specify the same parent action in their C<Chained>;
-that is, one action can have multiple children.
-
-=item Chained('xyz')
-
-The action of the parent. For instance, if you have a method
-C<item_handler> in the controller C<SuperMarket::Aisle>, the action
-would be C</supermarket/aisle/item_handler>. For a Root handler this
-would be '/'. For an action in the same controller namespace you can use
-a relative name like C<:Chained('foo')>.
-
-=item PathPart('xyz')
-
-The name of this path section in the Chained tree mapping to the URI. If
-you specify C<:PathPart> without arguments, it takes the name of the
-action specifying the argument. For example, these two declarations
-have the same effect:
-
- sub foo :PathPart('foo') :Chained('bar') :Args(1) {
- ...
- }
-
-and
-
- sub foo :PathPart :Chained('bar') :Args(1) {
- ...
- }
-
-The value can also contain a slash, for example:
-
- sub baz :PathPart('bar/baz') :Chained('/') :Captures(1) {
- ...
- }
-
-would be involved in matches on C</bar/baz/*/...> paths.
-
-=item Captures(integer)
-
-Will 'collapse' the next C<integer> path segments in the request URI and
-push them into the arrayref C<$c-E<gt>req-E<gt>captures>. An action
-specifying C<Captures> is thought to be used as target for C<Chained>
-specifications. Also see the C<Args> attribute below, which is used for
-endpoints.
-
-=item Args(int)
-
-The number of path segments to capture at the end of a request URI. This
-B<must> be included in your leaf nodes. You can use C<Args(0)> for an
-equivalent of the index action. Args with no parameters will capture
-every postfixed segment into C<$c-E<gt>req-E<gt>args>.
-
-A specification of C<Args> is seen as endpoint in regard to an additional
-C<Chained> specification.
-
=item * B<Top-level> (B<Global>)
package MyApp::Controller::Foo;
explanation of the pre-defined meaning of Catalyst component class
names.
+=item * B<Chained>
+
+Catalyst also provides a method to build and dispatch chains of actions,
+like
+
+ sub foo : Chained : CaptureArgs(1) {
+ my ( $self, $c, $arg ) = @_;
+ ...
+ }
+
+ sub bar : Chained('foo') : Args(1) {
+ my ( $self, $c, $arg ) = @_;
+ ...
+ }
+
+to handle a C</foo/*/bar/*> path. For more information about this dispatch
+type, please read L<Catalyst::DispatchType::Chained>.
+
=item * B<Private>
sub foo : Private { }
}
You normally render templates at the end of a request, so it's a perfect
-use for the global C<end> action.
+use for the global C<end> action. (In practice, however, you would use a
+default C<end> action as supplied by L<Catalyst::Action::DefaultEnd>.)
Also, be sure to put the template under the directory specified in
C<$c-E<gt>config-E<gt>{root}>, or you'll be forced to look at our