Commit | Line | Data |
5882c86e |
1 | package Catalyst::DispatchType::Chained; |
141459fa |
2 | |
3 | use strict; |
4 | use base qw/Catalyst::DispatchType/; |
5 | use Text::SimpleTable; |
6 | use Catalyst::ActionChain; |
7 | use URI; |
8 | |
792b40ac |
9 | # please don't perltidy this. hairy code within. |
10 | |
141459fa |
11 | =head1 NAME |
12 | |
5882c86e |
13 | Catalyst::DispatchType::Chained - Path Part DispatchType |
141459fa |
14 | |
15 | =head1 SYNOPSIS |
16 | |
05a90578 |
17 | # root action - captures one argument after it |
18 | sub foo_setup : Chained('/') PathPart('foo') CaptureArgs(1) { |
19 | my ( $self, $c, $foo_arg ) = @_; |
20 | ... |
21 | } |
22 | |
23 | # child action endpoint - takes one argument |
24 | sub bar : Chained('foo_setup') Args(1) { |
25 | my ( $self, $c, $bar_arg ) = @_; |
26 | ... |
27 | } |
141459fa |
28 | |
29 | =head1 DESCRIPTION |
30 | |
05a90578 |
31 | See L</USAGE>. |
32 | |
141459fa |
33 | =head1 METHODS |
34 | |
35 | =head2 $self->list($c) |
36 | |
37 | Debug output for Path Part dispatch points |
38 | |
141459fa |
39 | =cut |
40 | |
792b40ac |
41 | sub list { |
42 | my ( $self, $c ) = @_; |
43 | |
44 | return unless $self->{endpoints}; |
45 | |
46 | my $paths = Text::SimpleTable->new( |
47 | [ 35, 'Path Spec' ], [ 36, 'Private' ] |
48 | ); |
49 | |
50 | ENDPOINT: foreach my $endpoint ( |
51 | sort { $a->reverse cmp $b->reverse } |
52 | @{ $self->{endpoints} } |
53 | ) { |
54 | my $args = $endpoint->attributes->{Args}->[0]; |
55 | my @parts = (defined($args) ? (("*") x $args) : '...'); |
d34667c3 |
56 | my @parents = (); |
792b40ac |
57 | my $parent = "DUMMY"; |
58 | my $curr = $endpoint; |
59 | while ($curr) { |
1c34f703 |
60 | if (my $cap = $curr->attributes->{CaptureArgs}) { |
792b40ac |
61 | unshift(@parts, (("*") x $cap->[0])); |
62 | } |
63 | if (my $pp = $curr->attributes->{PartPath}) { |
64 | unshift(@parts, $pp->[0]) |
65 | if (defined $pp->[0] && length $pp->[0]); |
66 | } |
5882c86e |
67 | $parent = $curr->attributes->{Chained}->[0]; |
792b40ac |
68 | $curr = $self->{actions}{$parent}; |
d34667c3 |
69 | unshift(@parents, $curr) if $curr; |
792b40ac |
70 | } |
71 | next ENDPOINT unless $parent eq '/'; # skip dangling action |
d34667c3 |
72 | my @rows; |
73 | foreach my $p (@parents) { |
74 | my $name = "/${p}"; |
1c34f703 |
75 | if (my $cap = $p->attributes->{CaptureArgs}) { |
d34667c3 |
76 | $name .= ' ('.$cap->[0].')'; |
77 | } |
78 | unless ($p eq $parents[0]) { |
79 | $name = "-> ${name}"; |
80 | } |
81 | push(@rows, [ '', $name ]); |
82 | } |
83 | push(@rows, [ '', (@rows ? "=> " : '')."/${endpoint}" ]); |
84 | $rows[0][0] = join('/', '', @parts); |
85 | $paths->row(@$_) for @rows; |
792b40ac |
86 | } |
87 | |
1cf0345b |
88 | $c->log->debug( "Loaded Chained actions:\n" . $paths->draw . "\n" ); |
792b40ac |
89 | } |
141459fa |
90 | |
91 | =head2 $self->match( $c, $path ) |
92 | |
05a90578 |
93 | Calls C<recurse_match> to see if a chain matches the C<$path>. |
141459fa |
94 | |
95 | =cut |
96 | |
97 | sub match { |
98 | my ( $self, $c, $path ) = @_; |
99 | |
100 | return 0 if @{$c->req->args}; |
101 | |
102 | my @parts = split('/', $path); |
103 | |
6365b527 |
104 | my ($chain, $captures, $parts) = $self->recurse_match($c, '/', \@parts); |
6b495723 |
105 | push @{$c->req->args}, @$parts if $parts && @$parts; |
141459fa |
106 | |
107 | return 0 unless $chain; |
108 | |
109 | my $action = Catalyst::ActionChain->from_chain($chain); |
110 | |
111 | $c->req->action("/${action}"); |
112 | $c->req->match("/${action}"); |
113 | $c->req->captures($captures); |
114 | $c->action($action); |
115 | $c->namespace( $action->namespace ); |
116 | |
117 | return 1; |
118 | } |
119 | |
120 | =head2 $self->recurse_match( $c, $parent, \@path_parts ) |
121 | |
05a90578 |
122 | Recursive search for a matching chain. |
141459fa |
123 | |
124 | =cut |
125 | |
126 | sub recurse_match { |
127 | my ( $self, $c, $parent, $path_parts ) = @_; |
128 | my $children = $self->{children_of}{$parent}; |
129 | return () unless $children; |
6b495723 |
130 | my $best_action; |
141459fa |
131 | my @captures; |
1b04b972 |
132 | TRY: foreach my $try_part (sort { length($b) <=> length($a) } |
cdc97b63 |
133 | keys %$children) { |
1b04b972 |
134 | # $b then $a to try longest part first |
141459fa |
135 | my @parts = @$path_parts; |
136 | if (length $try_part) { # test and strip PathPart |
137 | next TRY unless |
138 | ($try_part eq join('/', # assemble equal number of parts |
139 | splice( # and strip them off @parts as well |
792b40ac |
140 | @parts, 0, scalar(@{[split('/', $try_part)]}) |
141 | ))); # @{[]} to avoid split to @_ |
141459fa |
142 | } |
143 | my @try_actions = @{$children->{$try_part}}; |
144 | TRY_ACTION: foreach my $action (@try_actions) { |
1c34f703 |
145 | if (my $capture_attr = $action->attributes->{CaptureArgs}) { |
f505df49 |
146 | |
147 | # Short-circuit if not enough remaining parts |
148 | next TRY_ACTION unless @parts >= $capture_attr->[0]; |
149 | |
141459fa |
150 | my @captures; |
151 | my @parts = @parts; # localise |
7a7ac23c |
152 | |
1c34f703 |
153 | # strip CaptureArgs into list |
7a7ac23c |
154 | push(@captures, splice(@parts, 0, $capture_attr->[0])); |
155 | |
141459fa |
156 | # try the remaining parts against children of this action |
6365b527 |
157 | my ($actions, $captures, $action_parts) = $self->recurse_match( |
141459fa |
158 | $c, '/'.$action->reverse, \@parts |
159 | ); |
6b495723 |
160 | if ($actions && (!$best_action || $#$action_parts < $#{$best_action->{parts}})){ |
161 | $best_action = { |
162 | actions => [ $action, @$actions ], |
163 | captures=> [ @captures, @$captures ], |
164 | parts => $action_parts |
165 | }; |
166 | } |
167 | } |
168 | else { |
7a7ac23c |
169 | { |
170 | local $c->req->{arguments} = [ @{$c->req->args}, @parts ]; |
171 | next TRY_ACTION unless $action->match($c); |
172 | } |
953c176d |
173 | my $args_attr = $action->attributes->{Args}->[0]; |
174 | |
175 | # No best action currently |
176 | # OR This one matches with fewer parts left than the current best action, |
177 | # And therefore is a better match |
178 | # OR No parts and this expects 0 |
179 | # The current best action might also be Args(0), |
180 | # but we couldn't chose between then anyway so we'll take the last seen |
181 | |
182 | if (!$best_action || |
183 | @parts < @{$best_action->{parts}} || |
a8194217 |
184 | (!@parts && $args_attr eq 0)){ |
6b495723 |
185 | $best_action = { |
186 | actions => [ $action ], |
187 | captures=> [], |
188 | parts => \@parts |
6b495723 |
189 | } |
953c176d |
190 | } |
141459fa |
191 | } |
192 | } |
193 | } |
953c176d |
194 | return @$best_action{qw/actions captures parts/} if $best_action; |
141459fa |
195 | return (); |
196 | } |
197 | |
198 | =head2 $self->register( $c, $action ) |
199 | |
05a90578 |
200 | Calls register_path for every Path attribute for the given $action. |
141459fa |
201 | |
202 | =cut |
203 | |
204 | sub register { |
205 | my ( $self, $c, $action ) = @_; |
206 | |
1dc8af44 |
207 | my @chained_attr = @{ $action->attributes->{Chained} || [] }; |
141459fa |
208 | |
1dc8af44 |
209 | return 0 unless @chained_attr; |
141459fa |
210 | |
57d7305c |
211 | if (@chained_attr > 1) { |
141459fa |
212 | Catalyst::Exception->throw( |
5882c86e |
213 | "Multiple Chained attributes not supported registering ${action}" |
141459fa |
214 | ); |
215 | } |
216 | |
1dc8af44 |
217 | my $parent = $chained_attr[0]; |
141459fa |
218 | |
219 | if (defined($parent) && length($parent)) { |
1dc8af44 |
220 | if ($parent eq '.') { |
221 | $parent = '/'.$action->namespace; |
222 | } elsif ($parent !~ m/^\//) { |
7f64ae17 |
223 | if ($action->namespace) { |
224 | $parent = '/'.join('/', $action->namespace, $parent); |
225 | } else { |
226 | $parent = '/'.$parent; # special case namespace '' (root) |
227 | } |
141459fa |
228 | } |
229 | } else { |
1dc8af44 |
230 | $parent = '/' |
141459fa |
231 | } |
232 | |
5882c86e |
233 | $action->attributes->{Chained} = [ $parent ]; |
792b40ac |
234 | |
141459fa |
235 | my $children = ($self->{children_of}{$parent} ||= {}); |
236 | |
237 | my @path_part = @{ $action->attributes->{PathPart} || [] }; |
238 | |
09461385 |
239 | my $part = $action->name; |
141459fa |
240 | |
09461385 |
241 | if (@path_part == 1 && defined $path_part[0]) { |
242 | $part = $path_part[0]; |
141459fa |
243 | } elsif (@path_part > 1) { |
244 | Catalyst::Exception->throw( |
245 | "Multiple PathPart attributes not supported registering ${action}" |
246 | ); |
247 | } |
248 | |
8a6a6581 |
249 | if ($part =~ m(^/)) { |
250 | Catalyst::Exception->throw( |
251 | "Absolute parameters to PathPart not allowed registering ${action}" |
252 | ); |
253 | } |
254 | |
792b40ac |
255 | $action->attributes->{PartPath} = [ $part ]; |
256 | |
141459fa |
257 | unshift(@{ $children->{$part} ||= [] }, $action); |
258 | |
792b40ac |
259 | ($self->{actions} ||= {})->{'/'.$action->reverse} = $action; |
260 | |
1c34f703 |
261 | unless ($action->attributes->{CaptureArgs}) { |
792b40ac |
262 | unshift(@{ $self->{endpoints} ||= [] }, $action); |
263 | } |
264 | |
265 | return 1; |
141459fa |
266 | } |
267 | |
268 | =head2 $self->uri_for_action($action, $captures) |
269 | |
05a90578 |
270 | Get the URI part for the action, using C<$captures> to fill |
271 | the capturing parts. |
141459fa |
272 | |
273 | =cut |
274 | |
275 | sub uri_for_action { |
276 | my ( $self, $action, $captures ) = @_; |
277 | |
5882c86e |
278 | return undef unless ($action->attributes->{Chained} |
8b13f357 |
279 | && !$action->attributes->{CaptureArgs}); |
792b40ac |
280 | |
281 | my @parts = (); |
282 | my @captures = @$captures; |
283 | my $parent = "DUMMY"; |
284 | my $curr = $action; |
285 | while ($curr) { |
1c34f703 |
286 | if (my $cap = $curr->attributes->{CaptureArgs}) { |
792b40ac |
287 | return undef unless @captures >= $cap->[0]; # not enough captures |
8b13f357 |
288 | if ($cap->[0]) { |
289 | unshift(@parts, splice(@captures, -$cap->[0])); |
290 | } |
792b40ac |
291 | } |
292 | if (my $pp = $curr->attributes->{PartPath}) { |
293 | unshift(@parts, $pp->[0]) |
8b13f357 |
294 | if (defined($pp->[0]) && length($pp->[0])); |
792b40ac |
295 | } |
5882c86e |
296 | $parent = $curr->attributes->{Chained}->[0]; |
792b40ac |
297 | $curr = $self->{actions}{$parent}; |
141459fa |
298 | } |
792b40ac |
299 | |
300 | return undef unless $parent eq '/'; # fail for dangling action |
301 | |
302 | return undef if @captures; # fail for too many captures |
303 | |
304 | return join('/', '', @parts); |
305 | |
141459fa |
306 | } |
307 | |
05a90578 |
308 | =head1 USAGE |
309 | |
310 | =head2 Introduction |
311 | |
312 | The C<Chained> attribute allows you to chain public path parts together |
67869327 |
313 | by their private names. A chain part's path can be specified with |
314 | C<PathPart> and can be declared to expect an arbitrary number of |
315 | arguments. The endpoint of the chain specifies how many arguments it |
316 | gets through the C<Args> attribute. C<:Args(0)> would be none at all, |
317 | C<:Args> without an integer would be unlimited. The path parts that |
318 | aren't endpoints are using C<CaptureArgs> to specify how many parameters |
319 | they expect to receive. As an example setup: |
05a90578 |
320 | |
321 | package MyApp::Controller::Greeting; |
322 | use base qw/ Catalyst::Controller /; |
323 | |
324 | # this is the beginning of our chain |
325 | sub hello : PathPart('hello') Chained('/') CaptureArgs(1) { |
326 | my ( $self, $c, $integer ) = @_; |
327 | $c->stash->{ message } = "Hello "; |
328 | $c->stash->{ arg_sum } = $integer; |
329 | } |
330 | |
331 | # this is our endpoint, because it has no :CaptureArgs |
332 | sub world : PathPart('world') Chained('hello') Args(1) { |
333 | my ( $self, $c, $integer ) = @_; |
334 | $c->stash->{ message } .= "World!"; |
335 | $c->stash->{ arg_sum } += $integer; |
336 | |
337 | $c->response->body( join "<br/>\n" => |
338 | $c->stash->{ message }, $c->stash->{ arg_sum } ); |
339 | } |
340 | |
341 | The debug output provides a separate table for chained actions, showing |
67869327 |
342 | the whole chain as it would match and the actions it contains. Here's an |
343 | example of the startup output with our actions above: |
05a90578 |
344 | |
345 | ... |
346 | [debug] Loaded Path Part actions: |
347 | .-----------------------+------------------------------. |
348 | | Path Spec | Private | |
349 | +-----------------------+------------------------------+ |
350 | | /hello/*/world/* | /greeting/hello (1) | |
351 | | | => /greeting/world | |
352 | '-----------------------+------------------------------' |
353 | ... |
354 | |
67869327 |
355 | As you can see, Catalyst only deals with chains as whole paths and |
356 | builds one for each endpoint, which are the actions with C<:Chained> but |
357 | without C<:CaptureArgs>. |
05a90578 |
358 | |
359 | Let's assume this application gets a request at the path |
67869327 |
360 | C</hello/23/world/12>. What happens then? First, Catalyst will dispatch |
361 | to the C<hello> action and pass the value C<23> as an argument to it |
362 | after the context. It does so because we have previously used |
363 | C<:CaptureArgs(1)> to declare that it has one path part after itself as |
364 | its argument. We told Catalyst that this is the beginning of the chain |
365 | by specifying C<:Chained('/')>. Also note that instead of saying |
366 | C<:PathPart('hello')> we could also just have said C<:PathPart>, as it |
367 | defaults to the name of the action. |
05a90578 |
368 | |
369 | After C<hello> has run, Catalyst goes on to dispatch to the C<world> |
67869327 |
370 | action. This is the last action to be called: Catalyst knows this is an |
371 | endpoint because we did not specify a C<:CaptureArgs> |
372 | attribute. Nevertheless we specify that this action expects an argument, |
373 | but at this point we're using C<:Args(1)> to do that. We could also have |
374 | said C<:Args> or left it out altogether, which would mean this action |
375 | would get all arguments that are there. This action's C<:Chained> |
376 | attribute says C<hello> and tells Catalyst that the C<hello> action in |
377 | the current controller is its parent. |
05a90578 |
378 | |
379 | With this we have built a chain consisting of two public path parts. |
67869327 |
380 | C<hello> captures one part of the path as its argument, and also |
381 | specifies the path root as its parent. So this part is |
382 | C</hello/$arg>. The next part is the endpoint C<world>, expecting one |
383 | argument. It sums up to the path part C<world/$arg>. This leads to a |
384 | complete chain of C</hello/$arg/world/$arg> which is matched against the |
385 | requested paths. |
386 | |
387 | This example application would, if run and called by e.g. |
388 | C</hello/23/world/12>, set the stash value C<message> to "Hello" and the |
389 | value C<arg_sum> to "23". The C<world> action would then append "World!" |
390 | to C<message> and add C<12> to the stash's C<arg_sum> value. For the |
391 | sake of simplicity no view is shown. Instead we just put the values of |
392 | the stash into our body. So the output would look like: |
05a90578 |
393 | |
394 | Hello World! |
395 | 35 |
396 | |
67869327 |
397 | And our test server would have given us this debugging output for the |
05a90578 |
398 | request: |
399 | |
400 | ... |
401 | [debug] "GET" request for "hello/23/world/12" from "127.0.0.1" |
402 | [debug] Path is "/greeting/world" |
403 | [debug] Arguments are "12" |
404 | [info] Request took 0.164113s (6.093/s) |
405 | .------------------------------------------+-----------. |
406 | | Action | Time | |
407 | +------------------------------------------+-----------+ |
408 | | /greeting/hello | 0.000029s | |
409 | | /greeting/world | 0.000024s | |
410 | '------------------------------------------+-----------' |
411 | ... |
412 | |
67869327 |
413 | What would be common uses of this dispatch technique? It gives the |
414 | possibility to split up logic that contains steps that each depend on |
415 | each other. An example would be, for example, a wiki path like |
05a90578 |
416 | C</wiki/FooBarPage/rev/23/view>. This chain can be easily built with |
417 | these actions: |
418 | |
419 | sub wiki : PathPart('wiki') Chained('/') CaptureArgs(1) { |
420 | my ( $self, $c, $page_name ) = @_; |
421 | # load the page named $page_name and put the object |
422 | # into the stash |
423 | } |
424 | |
425 | sub rev : PathPart('rev') Chained('wiki') CaptureArgs(1) { |
426 | my ( $self, $c, $revision_id ) = @_; |
67869327 |
427 | # use the page object in the stash to get at its |
05a90578 |
428 | # revision with number $revision_id |
429 | } |
430 | |
431 | sub view : PathPart Chained('rev') Args(0) { |
432 | my ( $self, $c ) = @_; |
67869327 |
433 | # display the revision in our stash. Another option |
05a90578 |
434 | # would be to forward a compatible object to the action |
435 | # that displays the default wiki pages, unless we want |
436 | # a different interface here, for example restore |
437 | # functionality. |
438 | } |
439 | |
67869327 |
440 | It would now be possible to add other endpoints, for example C<restore> |
441 | to restore this specific revision as the current state. |
05a90578 |
442 | |
67869327 |
443 | You don't have to put all the chained actions in one controller. The |
444 | specification of the parent through C<:Chained> also takes an absolute |
445 | action path as its argument. Just specify it with a leading C</>. |
05a90578 |
446 | |
447 | If you want, for example, to have actions for the public paths |
67869327 |
448 | C</foo/12/edit> and C</foo/12>, just specify two actions with |
05a90578 |
449 | C<:PathPart('foo')> and C<:Chained('/')>. The handler for the former |
67869327 |
450 | path needs a C<:CaptureArgs(1)> attribute and a endpoint with |
05a90578 |
451 | C<:PathPart('edit')> and C<:Chained('foo')>. For the latter path give |
452 | the action just a C<:Args(1)> to mark it as endpoint. This sums up to |
453 | this debugging output: |
454 | |
455 | ... |
456 | [debug] Loaded Path Part actions: |
457 | .-----------------------+------------------------------. |
458 | | Path Spec | Private | |
459 | +-----------------------+------------------------------+ |
460 | | /foo/* | /controller/foo_view | |
461 | | /foo/*/edit | /controller/foo_load (1) | |
462 | | | => /controller/edit | |
463 | '-----------------------+------------------------------' |
464 | ... |
465 | |
466 | Here's a more detailed specification of the attributes belonging to |
467 | C<:Chained>: |
468 | |
469 | =head2 Attributes |
470 | |
471 | =over 8 |
472 | |
473 | =item PathPart |
474 | |
475 | Sets the name of this part of the chain. If it is specified without |
476 | arguments, it takes the name of the action as default. So basically |
477 | C<sub foo :PathPart> and C<sub foo :PathPart('foo')> are identical. |
478 | This can also contain slashes to bind to a deeper level. An action |
479 | with C<sub bar :PathPart('foo/bar') :Chained('/')> would bind to |
480 | C</foo/bar/...>. If you don't specify C<:PathPart> it has the same |
481 | effect as using C<:PathPart>, it would default to the action name. |
482 | |
483 | =item Chained |
484 | |
485 | Has to be specified for every child in the chain. Possible values are |
486 | absolute and relative private action paths, with the relatives pointing |
487 | to the current controller, or a single slash C</> to tell Catalyst that |
83784422 |
488 | this is the root of a chain. The attribute C<:Chained> without arguments |
67869327 |
489 | also defaults to the C</> behavior. |
05a90578 |
490 | |
67869327 |
491 | Because you can specify an absolute path to the parent action, it |
492 | doesn't matter to Catalyst where that parent is located. So, if your |
493 | design requests it, you can redispatch a chain through any controller or |
494 | namespace you want. |
05a90578 |
495 | |
496 | Another interesting possibility gives C<:Chained('.')>, which chains |
67869327 |
497 | itself to an action with the path of the current controller's namespace. |
05a90578 |
498 | For example: |
499 | |
500 | # in MyApp::Controller::Foo |
501 | sub bar : Chained CaptureArgs(1) { ... } |
502 | |
503 | # in MyApp::Controller::Foo::Bar |
504 | sub baz : Chained('.') Args(1) { ... } |
505 | |
506 | This builds up a chain like C</bar/*/baz/*>. The specification of C<.> |
67869327 |
507 | as the argument to Chained here chains the C<baz> action to an action |
508 | with the path of the current controller namespace, namely |
509 | C</foo/bar>. That action chains directly to C</>, so the C</bar/*/baz/*> |
510 | chain comes out as the end product. |
05a90578 |
511 | |
512 | =item CaptureArgs |
513 | |
67869327 |
514 | Must be specified for every part of the chain that is not an |
05a90578 |
515 | endpoint. With this attribute Catalyst knows how many of the following |
67869327 |
516 | parts of the path (separated by C</>) this action wants to capture as |
517 | its arguments. If it doesn't expect any, just specify |
518 | C<:CaptureArgs(0)>. The captures get passed to the action's C<@_> right |
519 | after the context, but you can also find them as array references in |
05a90578 |
520 | C<$c-E<gt>request-E<gt>captures-E<gt>[$level]>. The C<$level> is the |
521 | level of the action in the chain that captured the parts of the path. |
522 | |
67869327 |
523 | An action that is part of a chain (that is, one that has a C<:Chained> |
524 | attribute) but has no C<:CaptureArgs> attribute is treated by Catalyst |
525 | as a chain end. |
05a90578 |
526 | |
527 | =item Args |
528 | |
529 | By default, endpoints receive the rest of the arguments in the path. You |
530 | can tell Catalyst through C<:Args> explicitly how many arguments your |
531 | endpoint expects, just like you can with C<:CaptureArgs>. Note that this |
67869327 |
532 | also affects whether this chain is invoked on a request. A chain with an |
05a90578 |
533 | endpoint specifying one argument will only match if exactly one argument |
534 | exists in the path. |
535 | |
536 | You can specify an exact number of arguments like C<:Args(3)>, including |
537 | C<0>. If you just say C<:Args> without any arguments, it is the same as |
67869327 |
538 | leaving it out altogether: The chain is matched regardless of the number |
05a90578 |
539 | of path parts after the endpoint. |
540 | |
67869327 |
541 | Just as with C<:CaptureArgs>, the arguments get passed to the action in |
05a90578 |
542 | C<@_> after the context object. They can also be reached through |
543 | C<$c-E<gt>request-E<gt>arguments>. |
544 | |
545 | =back |
546 | |
67869327 |
547 | =head2 Auto actions, dispatching and forwarding |
05a90578 |
548 | |
549 | Note that the list of C<auto> actions called depends on the private path |
67869327 |
550 | of the endpoint of the chain, not on the chained actions way. The |
551 | C<auto> actions will be run before the chain dispatching begins. In |
552 | every other aspect, C<auto> actions behave as documented. |
05a90578 |
553 | |
554 | The C<forward>ing to other actions does just what you would expect. But if |
555 | you C<detach> out of a chain, the rest of the chain will not get called |
67869327 |
556 | after the C<detach>. |
05a90578 |
557 | |
141459fa |
558 | =head1 AUTHOR |
559 | |
792b40ac |
560 | Matt S Trout <mst@shadowcatsystems.co.uk> |
141459fa |
561 | |
562 | =head1 COPYRIGHT |
563 | |
564 | This program is free software, you can redistribute it and/or modify it under |
565 | the same terms as Perl itself. |
566 | |
567 | =cut |
568 | |
569 | 1; |