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5ee249f2 |
1 | package Catalyst::Controller; |
2 | |
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3 | #switch to BEGIN { extends qw/ ... /; } ? |
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4 | use MRO::Compat; |
5 | use mro 'c3'; |
a7caa492 |
6 | use base qw/Catalyst::Component Catalyst::AttrContainer/; |
6e58f383 |
7 | use Moose; |
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8 | |
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9 | use Scalar::Util qw/blessed/; |
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10 | use Catalyst::Exception; |
11 | use Catalyst::Utils; |
12 | use Class::Inspector; |
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13 | |
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14 | has path_prefix => |
15 | ( |
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16 | is => 'rw', |
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17 | isa => 'Str', |
18 | init_arg => 'path', |
19 | predicate => 'has_path_prefix', |
20 | ); |
21 | |
22 | has action_namespace => |
23 | ( |
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24 | is => 'rw', |
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25 | isa => 'Str', |
26 | init_arg => 'namespace', |
27 | predicate => 'has_action_namespace', |
28 | ); |
29 | |
30 | has actions => |
31 | ( |
32 | is => 'rw', |
33 | isa => 'HashRef', |
34 | init_arg => undef, |
35 | ); |
36 | |
37 | # isa => 'ClassName|Catalyst' ? |
38 | has _application => (is => 'rw'); |
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39 | sub _app{ shift->_application(@_) } |
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40 | |
41 | sub BUILD { |
42 | my ($self, $args) = @_; |
43 | my $action = delete $args->{action} || {}; |
44 | my $actions = delete $args->{actions} || {}; |
45 | my $attr_value = $self->merge_config_hashes($actions, $action); |
46 | $self->actions($attr_value); |
47 | } |
48 | |
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49 | =head1 NAME |
50 | |
51 | Catalyst::Controller - Catalyst Controller base class |
52 | |
53 | =head1 SYNOPSIS |
54 | |
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55 | package MyApp::Controller::Search |
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56 | use base qw/Catalyst::Controller/; |
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57 | |
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58 | sub foo : Local { |
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59 | my ($self,$c,@args) = @_; |
ac5c933b |
60 | ... |
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61 | } # Dispatches to /search/foo |
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62 | |
63 | =head1 DESCRIPTION |
64 | |
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65 | Controllers are where the actions in the Catalyst framework |
66 | reside. Each action is represented by a function with an attribute to |
67 | identify what kind of action it is. See the L<Catalyst::Dispatcher> |
68 | for more info about how Catalyst dispatches to actions. |
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69 | |
70 | =cut |
71 | |
2361ed67 |
72 | #I think both of these could be attributes. doesn't really seem like they need |
73 | #to ble class data. i think that attributes +default would work just fine |
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74 | __PACKAGE__->mk_classdata($_) for qw/_dispatch_steps _action_class/; |
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75 | |
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76 | __PACKAGE__->_dispatch_steps( [qw/_BEGIN _AUTO _ACTION/] ); |
77 | __PACKAGE__->_action_class('Catalyst::Action'); |
78 | |
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79 | |
80 | sub _DISPATCH : Private { |
81 | my ( $self, $c ) = @_; |
82 | |
83 | foreach my $disp ( @{ $self->_dispatch_steps } ) { |
84 | last unless $c->forward($disp); |
85 | } |
86 | |
87 | $c->forward('_END'); |
88 | } |
89 | |
90 | sub _BEGIN : Private { |
91 | my ( $self, $c ) = @_; |
92 | my $begin = ( $c->get_actions( 'begin', $c->namespace ) )[-1]; |
93 | return 1 unless $begin; |
94 | $begin->dispatch( $c ); |
95 | return !@{ $c->error }; |
96 | } |
97 | |
98 | sub _AUTO : Private { |
99 | my ( $self, $c ) = @_; |
100 | my @auto = $c->get_actions( 'auto', $c->namespace ); |
101 | foreach my $auto (@auto) { |
102 | $auto->dispatch( $c ); |
103 | return 0 unless $c->state; |
104 | } |
105 | return 1; |
106 | } |
107 | |
108 | sub _ACTION : Private { |
109 | my ( $self, $c ) = @_; |
110 | if ( ref $c->action |
111 | && $c->action->can('execute') |
112 | && $c->req->action ) |
113 | { |
114 | $c->action->dispatch( $c ); |
115 | } |
116 | return !@{ $c->error }; |
117 | } |
118 | |
119 | sub _END : Private { |
120 | my ( $self, $c ) = @_; |
121 | my $end = ( $c->get_actions( 'end', $c->namespace ) )[-1]; |
122 | return 1 unless $end; |
123 | $end->dispatch( $c ); |
124 | return !@{ $c->error }; |
125 | } |
126 | |
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127 | sub new { |
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128 | my $self = shift; |
129 | my $app = $_[0]; |
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130 | my $new = $self->next::method(@_); |
e8b9f2a9 |
131 | $new->_application( $app ); |
132 | return $new; |
0fc2d522 |
133 | } |
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134 | |
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135 | sub action_for { |
136 | my ( $self, $name ) = @_; |
137 | my $app = ($self->isa('Catalyst') ? $self : $self->_application); |
138 | return $app->dispatcher->get_action($name, $self->action_namespace); |
139 | } |
140 | |
0fc2d522 |
141 | #my opinion is that this whole sub really should be a builder method, not |
142 | #something that happens on every call. Anyone else disagree?? -- groditi |
96d8d513 |
143 | ## -- apparently this is all just waiting for app/ctx split |
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144 | around action_namespace => sub { |
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145 | my $orig = shift; |
146 | my ( $self, $c ) = @_; |
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147 | |
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148 | if( ref($self) ){ |
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149 | return $self->$orig if $self->has_action_namespace; |
0fc2d522 |
150 | } else { |
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151 | return $self->config->{namespace} if exists $self->config->{namespace}; |
152 | } |
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153 | |
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154 | my $case_s; |
155 | if( $c ){ |
156 | $case_s = $c->config->{case_sensitive}; |
157 | } else { |
158 | if ($self->isa('Catalyst')) { |
159 | $case_s = $self->config->{case_sensitive}; |
160 | } else { |
161 | if (ref $self) { |
162 | $case_s = $self->_application->config->{case_sensitive}; |
163 | } else { |
164 | confess("Can't figure out case_sensitive setting"); |
165 | } |
166 | } |
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167 | } |
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168 | |
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169 | my $namespace = Catalyst::Utils::class2prefix(ref($self) || $self, $case_s) || ''; |
170 | $self->$orig($namespace) if ref($self); |
171 | return $namespace; |
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172 | }; |
173 | |
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174 | #Once again, this is probably better written as a builder method |
0bc4c3ab |
175 | around path_prefix => sub { |
176 | my $orig = shift; |
177 | my $self = shift; |
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178 | if( ref($self) ){ |
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179 | return $self->$orig if $self->has_path_prefix; |
180 | } else { |
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181 | return $self->config->{path} if exists $self->config->{path}; |
0bc4c3ab |
182 | } |
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183 | my $namespace = $self->action_namespace(@_); |
184 | $self->$orig($namespace) if ref($self); |
185 | return $namespace; |
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186 | }; |
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187 | |
188 | |
189 | sub register_actions { |
190 | my ( $self, $c ) = @_; |
191 | my $class = ref $self || $self; |
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192 | #this is still not correct for some reason. |
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193 | my $namespace = $self->action_namespace($c); |
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194 | my $meta = $self->meta; |
195 | my %methods = map{ $_->{code}->body => $_->{name} } |
2361ed67 |
196 | grep {$_->{class} ne 'Moose::Object'} #ignore Moose::Object methods |
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197 | $meta->compute_all_applicable_methods; |
198 | |
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199 | |
200 | # Advanced inheritance support for plugins and the like |
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201 | #moose todo: migrate to eliminate CDI compat |
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202 | my @action_cache; |
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203 | for my $isa ( $meta->superclasses, $class ) { |
204 | if(my $coderef = $isa->can('_action_cache')){ |
205 | push(@action_cache, @{ $isa->$coderef }); |
234763d4 |
206 | } |
207 | } |
208 | |
209 | foreach my $cache (@action_cache) { |
210 | my $code = $cache->[0]; |
211 | my $method = delete $methods{$code}; # avoid dupe registers |
212 | next unless $method; |
213 | my $attrs = $self->_parse_attrs( $c, $method, @{ $cache->[1] } ); |
214 | if ( $attrs->{Private} && ( keys %$attrs > 1 ) ) { |
215 | $c->log->debug( 'Bad action definition "' |
216 | . join( ' ', @{ $cache->[1] } ) |
217 | . qq/" for "$class->$method"/ ) |
218 | if $c->debug; |
219 | next; |
220 | } |
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221 | my $reverse = $namespace ? "${namespace}/${method}" : $method; |
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222 | my $action = $self->create_action( |
223 | name => $method, |
224 | code => $code, |
225 | reverse => $reverse, |
226 | namespace => $namespace, |
227 | class => $class, |
228 | attributes => $attrs, |
229 | ); |
230 | |
231 | $c->dispatcher->register( $c, $action ); |
232 | } |
233 | } |
234 | |
235 | sub create_action { |
236 | my $self = shift; |
237 | my %args = @_; |
238 | |
239 | my $class = (exists $args{attributes}{ActionClass} |
240 | ? $args{attributes}{ActionClass}[0] |
241 | : $self->_action_class); |
242 | |
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243 | Class::MOP::load_class($class); |
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244 | return $class->new( \%args ); |
245 | } |
246 | |
247 | sub _parse_attrs { |
248 | my ( $self, $c, $name, @attrs ) = @_; |
249 | |
250 | my %raw_attributes; |
251 | |
252 | foreach my $attr (@attrs) { |
253 | |
254 | # Parse out :Foo(bar) into Foo => bar etc (and arrayify) |
255 | |
256 | if ( my ( $key, $value ) = ( $attr =~ /^(.*?)(?:\(\s*(.+?)\s*\))?$/ ) ) |
257 | { |
258 | |
259 | if ( defined $value ) { |
260 | ( $value =~ s/^'(.*)'$/$1/ ) || ( $value =~ s/^"(.*)"/$1/ ); |
261 | } |
262 | push( @{ $raw_attributes{$key} }, $value ); |
263 | } |
264 | } |
265 | |
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266 | #I know that the original behavior was to ignore action if actions was set |
267 | # but i actually think this may be a little more sane? we can always remove |
268 | # the merge behavior quite easily and go back to having actions have |
269 | # presedence over action by modifying the keys. i honestly think this is |
270 | # superior while mantaining really high degree of compat |
271 | my $actions; |
272 | if( ref($self) ) { |
273 | $actions = $self->actions; |
274 | } else { |
275 | my $cfg = $self->config; |
276 | $actions = $self->merge_config_hashes($cfg->{actions}, $cfg->{action}); |
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277 | } |
278 | |
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279 | %raw_attributes = ((exists $actions->{'*'} ? %{$actions->{'*'}} : ()), |
280 | %raw_attributes, |
281 | (exists $actions->{$name} ? %{$actions->{$name}} : ())); |
282 | |
283 | |
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284 | my %final_attributes; |
285 | |
286 | foreach my $key (keys %raw_attributes) { |
287 | |
288 | my $raw = $raw_attributes{$key}; |
289 | |
290 | foreach my $value (ref($raw) eq 'ARRAY' ? @$raw : $raw) { |
291 | |
292 | my $meth = "_parse_${key}_attr"; |
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293 | if ( my $code = $self->can($meth) ) { |
294 | ( $key, $value ) = $self->$code( $c, $name, $value ); |
234763d4 |
295 | } |
296 | push( @{ $final_attributes{$key} }, $value ); |
297 | } |
298 | } |
299 | |
300 | return \%final_attributes; |
301 | } |
302 | |
303 | sub _parse_Global_attr { |
304 | my ( $self, $c, $name, $value ) = @_; |
305 | return $self->_parse_Path_attr( $c, $name, "/$name" ); |
306 | } |
307 | |
308 | sub _parse_Absolute_attr { shift->_parse_Global_attr(@_); } |
309 | |
310 | sub _parse_Local_attr { |
311 | my ( $self, $c, $name, $value ) = @_; |
312 | return $self->_parse_Path_attr( $c, $name, $name ); |
313 | } |
314 | |
315 | sub _parse_Relative_attr { shift->_parse_Local_attr(@_); } |
316 | |
317 | sub _parse_Path_attr { |
318 | my ( $self, $c, $name, $value ) = @_; |
319 | $value ||= ''; |
320 | if ( $value =~ m!^/! ) { |
321 | return ( 'Path', $value ); |
322 | } |
323 | elsif ( length $value ) { |
324 | return ( 'Path', join( '/', $self->path_prefix($c), $value ) ); |
325 | } |
326 | else { |
327 | return ( 'Path', $self->path_prefix($c) ); |
328 | } |
329 | } |
330 | |
331 | sub _parse_Regex_attr { |
332 | my ( $self, $c, $name, $value ) = @_; |
333 | return ( 'Regex', $value ); |
334 | } |
335 | |
336 | sub _parse_Regexp_attr { shift->_parse_Regex_attr(@_); } |
337 | |
338 | sub _parse_LocalRegex_attr { |
339 | my ( $self, $c, $name, $value ) = @_; |
340 | unless ( $value =~ s/^\^// ) { $value = "(?:.*?)$value"; } |
341 | return ( 'Regex', '^' . $self->path_prefix($c) . "/${value}" ); |
342 | } |
343 | |
344 | sub _parse_LocalRegexp_attr { shift->_parse_LocalRegex_attr(@_); } |
345 | |
346 | sub _parse_ActionClass_attr { |
347 | my ( $self, $c, $name, $value ) = @_; |
348 | unless ( $value =~ s/^\+// ) { |
349 | $value = join('::', $self->_action_class, $value ); |
350 | } |
351 | return ( 'ActionClass', $value ); |
352 | } |
353 | |
9287719b |
354 | sub _parse_MyAction_attr { |
355 | my ( $self, $c, $name, $value ) = @_; |
356 | |
357 | my $appclass = Catalyst::Utils::class2appclass($self); |
358 | $value = "${appclass}::Action::${value}"; |
234763d4 |
359 | |
9287719b |
360 | return ( 'ActionClass', $value ); |
361 | } |
234763d4 |
362 | |
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363 | no Moose; |
364 | |
234763d4 |
365 | 1; |
366 | |
367 | __END__ |
368 | |
369 | =head1 CONFIGURATION |
370 | |
a269e0c2 |
371 | Like any other L<Catalyst::Component>, controllers have a config hash, |
372 | accessible through $self->config from the controller actions. Some |
373 | settings are in use by the Catalyst framework: |
234763d4 |
374 | |
375 | =head2 namespace |
376 | |
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377 | This specifies the internal namespace the controller should be bound |
378 | to. By default the controller is bound to the URI version of the |
379 | controller name. For instance controller 'MyApp::Controller::Foo::Bar' |
380 | will be bound to 'foo/bar'. The default Root controller is an example |
381 | of setting namespace to '' (the null string). |
234763d4 |
382 | |
ac5c933b |
383 | =head2 path |
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384 | |
385 | Sets 'path_prefix', as described below. |
386 | |
387 | =head1 METHODS |
388 | |
389 | =head2 $class->new($app, @args) |
390 | |
391 | Proxies through to NEXT::new and stashes the application instance as |
392 | $self->_application. |
393 | |
394 | =head2 $self->action_for('name') |
395 | |
a269e0c2 |
396 | Returns the Catalyst::Action object (if any) for a given method name |
397 | in this component. |
234763d4 |
398 | |
399 | =head2 $self->register_actions($c) |
400 | |
a269e0c2 |
401 | Finds all applicable actions for this component, creates |
402 | Catalyst::Action objects (using $self->create_action) for them and |
403 | registers them with $c->dispatcher. |
234763d4 |
404 | |
405 | =head2 $self->action_namespace($c) |
406 | |
a269e0c2 |
407 | Returns the private namespace for actions in this component. Defaults |
408 | to a value from the controller name (for |
409 | e.g. MyApp::Controller::Foo::Bar becomes "foo/bar") or can be |
410 | overridden from the "namespace" config key. |
234763d4 |
411 | |
412 | |
413 | =head2 $self->path_prefix($c) |
414 | |
a269e0c2 |
415 | Returns the default path prefix for :Local, :LocalRegex and relative |
416 | :Path actions in this component. Defaults to the action_namespace or |
417 | can be overridden from the "path" config key. |
234763d4 |
418 | |
419 | =head2 $self->create_action(%args) |
420 | |
a269e0c2 |
421 | Called with a hash of data to be use for construction of a new |
422 | Catalyst::Action (or appropriate sub/alternative class) object. |
234763d4 |
423 | |
424 | Primarily designed for the use of register_actions. |
425 | |
a269e0c2 |
426 | =head2 $self->_application |
234763d4 |
427 | |
428 | =head2 $self->_app |
429 | |
430 | Returns the application instance stored by C<new()> |
5ee249f2 |
431 | |
432 | =head1 AUTHOR |
433 | |
434 | Sebastian Riedel, C<sri@oook.de> |
234763d4 |
435 | Marcus Ramberg C<mramberg@cpan.org> |
5ee249f2 |
436 | |
437 | =head1 COPYRIGHT |
438 | |
a269e0c2 |
439 | This program is free software, you can redistribute it and/or modify |
440 | it under the same terms as Perl itself. |
5ee249f2 |
441 | |
442 | =cut |