1 package Catalyst::Controller;
4 use Moose::Util qw/find_meta/;
6 use namespace::clean -except => 'meta';
8 BEGIN { extends qw/Catalyst::Component MooseX::MethodAttributes::Inheritable/; }
10 use MooseX::MethodAttributes;
11 use Catalyst::Exception;
14 with 'Catalyst::Component::ApplicationAttribute';
21 predicate => 'has_path_prefix',
24 has action_namespace =>
28 init_arg => 'namespace',
29 predicate => 'has_action_namespace',
32 has _controller_actions =>
40 my ($self, $args) = @_;
41 my $action = delete $args->{action} || {};
42 my $actions = delete $args->{actions} || {};
43 my $attr_value = $self->merge_config_hashes($actions, $action);
44 $self->_controller_actions($attr_value);
49 Catalyst::Controller - Catalyst Controller base class
53 package MyApp::Controller::Search
54 use base qw/Catalyst::Controller/;
57 my ($self,$c,@args) = @_;
59 } # Dispatches to /search/foo
63 Controllers are where the actions in the Catalyst framework
64 reside. Each action is represented by a function with an attribute to
65 identify what kind of action it is. See the L<Catalyst::Dispatcher>
66 for more info about how Catalyst dispatches to actions.
70 #I think both of these could be attributes. doesn't really seem like they need
71 #to ble class data. i think that attributes +default would work just fine
72 __PACKAGE__->mk_classdata($_) for qw/_dispatch_steps _action_class/;
74 __PACKAGE__->_dispatch_steps( [qw/_BEGIN _AUTO _ACTION/] );
75 __PACKAGE__->_action_class('Catalyst::Action');
78 sub _DISPATCH : Private {
79 my ( $self, $c ) = @_;
81 foreach my $disp ( @{ $self->_dispatch_steps } ) {
82 last unless $c->forward($disp);
88 sub _BEGIN : Private {
89 my ( $self, $c ) = @_;
90 my $begin = ( $c->get_actions( 'begin', $c->namespace ) )[-1];
91 return 1 unless $begin;
92 $begin->dispatch( $c );
93 return !@{ $c->error };
97 my ( $self, $c ) = @_;
98 my @auto = $c->get_actions( 'auto', $c->namespace );
99 foreach my $auto (@auto) {
100 $auto->dispatch( $c );
101 return 0 unless $c->state;
106 sub _ACTION : Private {
107 my ( $self, $c ) = @_;
109 && $c->action->can('execute')
110 && defined $c->req->action )
112 $c->action->dispatch( $c );
114 return !@{ $c->error };
118 my ( $self, $c ) = @_;
119 my $end = ( $c->get_actions( 'end', $c->namespace ) )[-1];
120 return 1 unless $end;
121 $end->dispatch( $c );
122 return !@{ $c->error };
126 my ( $self, $name ) = @_;
127 my $app = ($self->isa('Catalyst') ? $self : $self->_application);
128 return $app->dispatcher->get_action($name, $self->action_namespace);
131 #my opinion is that this whole sub really should be a builder method, not
132 #something that happens on every call. Anyone else disagree?? -- groditi
133 ## -- apparently this is all just waiting for app/ctx split
134 around action_namespace => sub {
136 my ( $self, $c ) = @_;
139 return $self->$orig if $self->has_action_namespace;
141 return $self->config->{namespace} if exists $self->config->{namespace};
146 $case_s = $c->config->{case_sensitive};
148 if ($self->isa('Catalyst')) {
149 $case_s = $self->config->{case_sensitive};
152 $case_s = $self->_application->config->{case_sensitive};
154 confess("Can't figure out case_sensitive setting");
159 my $namespace = Catalyst::Utils::class2prefix(ref($self) || $self, $case_s) || '';
160 $self->$orig($namespace) if ref($self);
164 #Once again, this is probably better written as a builder method
165 around path_prefix => sub {
169 return $self->$orig if $self->has_path_prefix;
171 return $self->config->{path} if exists $self->config->{path};
173 my $namespace = $self->action_namespace(@_);
174 $self->$orig($namespace) if ref($self);
178 sub get_action_methods {
180 my $meta = find_meta($self);
181 confess("Metaclass for "
182 . ref($meta) . " for "
184 . " cannot support register_actions." )
185 unless $meta->can('get_nearest_methods_with_attributes');
186 my @methods = $meta->get_nearest_methods_with_attributes;
188 # actions specified via config are also action_methods
192 $meta->get_method($_)
193 || confess( 'Action "'
195 . '" is not available from controller '
197 } keys %{ $self->_controller_actions }
203 sub register_actions {
204 my ( $self, $c ) = @_;
205 $self->register_action_methods( $c, $self->get_action_methods );
208 sub register_action_methods {
209 my ( $self, $c, @methods ) = @_;
210 my $class = ref $self || $self;
211 #this is still not correct for some reason.
212 my $namespace = $self->action_namespace($c);
214 foreach my $method (@methods) {
215 my $name = $method->name;
216 my $attributes = $method->attributes;
217 #next unless $attributes;
218 my $attrs = $self->_parse_attrs( $c, $name, @{ $attributes } );
219 if ( $attrs->{Private} && ( keys %$attrs > 1 ) ) {
220 $c->log->debug( 'Bad action definition "'
221 . join( ' ', @{ $attributes } )
222 . qq/" for "$class->$name"/ )
226 my $reverse = $namespace ? "${namespace}/${name}" : $name;
227 my $action = $self->create_action(
229 code => $method->body,
231 namespace => $namespace,
233 attributes => $attrs,
236 $c->dispatcher->register( $c, $action );
244 my $class = (exists $args{attributes}{ActionClass}
245 ? $args{attributes}{ActionClass}[0]
246 : $self->_action_class);
248 Class::MOP::load_class($class);
249 return $class->new( \%args );
253 my ( $self, $c, $name, @attrs ) = @_;
257 foreach my $attr (@attrs) {
259 # Parse out :Foo(bar) into Foo => bar etc (and arrayify)
261 if ( my ( $key, $value ) = ( $attr =~ /^(.*?)(?:\(\s*(.+?)\s*\))?$/ ) )
264 if ( defined $value ) {
265 ( $value =~ s/^'(.*)'$/$1/ ) || ( $value =~ s/^"(.*)"/$1/ );
267 push( @{ $raw_attributes{$key} }, $value );
271 #I know that the original behavior was to ignore action if actions was set
272 # but i actually think this may be a little more sane? we can always remove
273 # the merge behavior quite easily and go back to having actions have
274 # presedence over action by modifying the keys. i honestly think this is
275 # superior while mantaining really high degree of compat
278 $actions = $self->_controller_actions;
280 my $cfg = $self->config;
281 $actions = $self->merge_config_hashes($cfg->{actions}, $cfg->{action});
284 %raw_attributes = ((exists $actions->{'*'} ? %{$actions->{'*'}} : ()),
286 (exists $actions->{$name} ? %{$actions->{$name}} : ()));
289 my %final_attributes;
291 foreach my $key (keys %raw_attributes) {
293 my $raw = $raw_attributes{$key};
295 foreach my $value (ref($raw) eq 'ARRAY' ? @$raw : $raw) {
297 my $meth = "_parse_${key}_attr";
298 if ( my $code = $self->can($meth) ) {
299 ( $key, $value ) = $self->$code( $c, $name, $value );
301 push( @{ $final_attributes{$key} }, $value );
305 return \%final_attributes;
308 sub _parse_Global_attr {
309 my ( $self, $c, $name, $value ) = @_;
310 return $self->_parse_Path_attr( $c, $name, "/$name" );
313 sub _parse_Absolute_attr { shift->_parse_Global_attr(@_); }
315 sub _parse_Local_attr {
316 my ( $self, $c, $name, $value ) = @_;
317 return $self->_parse_Path_attr( $c, $name, $name );
320 sub _parse_Relative_attr { shift->_parse_Local_attr(@_); }
322 sub _parse_Path_attr {
323 my ( $self, $c, $name, $value ) = @_;
324 $value = '' if !defined $value;
325 if ( $value =~ m!^/! ) {
326 return ( 'Path', $value );
328 elsif ( length $value ) {
329 return ( 'Path', join( '/', $self->path_prefix($c), $value ) );
332 return ( 'Path', $self->path_prefix($c) );
336 sub _parse_Regex_attr {
337 my ( $self, $c, $name, $value ) = @_;
338 return ( 'Regex', $value );
341 sub _parse_Regexp_attr { shift->_parse_Regex_attr(@_); }
343 sub _parse_LocalRegex_attr {
344 my ( $self, $c, $name, $value ) = @_;
345 unless ( $value =~ s/^\^// ) { $value = "(?:.*?)$value"; }
347 my $prefix = $self->path_prefix( $c );
348 $prefix .= '/' if length( $prefix );
350 return ( 'Regex', "^${prefix}${value}" );
353 sub _parse_LocalRegexp_attr { shift->_parse_LocalRegex_attr(@_); }
355 sub _parse_Chained_attr {
356 my ($self, $c, $name, $value) = @_;
358 if (defined($value) && length($value)) {
360 $value = '/'.$self->action_namespace($c);
361 } elsif (my ($rel, $rest) = $value =~ /^((?:\.{2}\/)+)(.*)$/) {
362 my @parts = split '/', $self->action_namespace($c);
363 my @levels = split '/', $rel;
365 $value = '/'.join('/', @parts[0 .. $#parts - @levels], $rest);
366 } elsif ($value !~ m/^\//) {
367 my $action_ns = $self->action_namespace($c);
370 $value = '/'.join('/', $action_ns, $value);
372 $value = '/'.$value; # special case namespace '' (root)
379 return Chained => $value;
382 sub _parse_ChainedParent_attr {
383 my ($self, $c, $name, $value) = @_;
384 return $self->_parse_Chained_attr($c, $name, '../'.$name);
387 sub _parse_PathPrefix_attr {
389 return PathPart => $self->path_prefix;
392 sub _parse_ActionClass_attr {
393 my ( $self, $c, $name, $value ) = @_;
394 $value = Catalyst::Utils::resolve_namespace($self->_action_class, $value);
395 return ( 'ActionClass', $value );
398 sub _parse_MyAction_attr {
399 my ( $self, $c, $name, $value ) = @_;
401 my $appclass = Catalyst::Utils::class2appclass($self);
402 $value = "${appclass}::Action::${value}";
404 return ( 'ActionClass', $value );
407 __PACKAGE__->meta->make_immutable;
415 Like any other L<Catalyst::Component>, controllers have a config hash,
416 accessible through $self->config from the controller actions. Some
417 settings are in use by the Catalyst framework:
421 This specifies the internal namespace the controller should be bound
422 to. By default the controller is bound to the URI version of the
423 controller name. For instance controller 'MyApp::Controller::Foo::Bar'
424 will be bound to 'foo/bar'. The default Root controller is an example
425 of setting namespace to '' (the null string).
429 Sets 'path_prefix', as described below.
433 =head2 BUILDARGS ($app, @args)
435 From L<Catalyst::Component::ApplicationAttribute>, stashes the application
436 instance as $self->_application.
438 =head2 $self->action_for('name')
440 Returns the Catalyst::Action object (if any) for a given method name
443 =head2 $self->action_namespace($c)
445 Returns the private namespace for actions in this component. Defaults
446 to a value from the controller name (for
447 e.g. MyApp::Controller::Foo::Bar becomes "foo/bar") or can be
448 overridden from the "namespace" config key.
451 =head2 $self->path_prefix($c)
453 Returns the default path prefix for :PathPrefix, :Local, :LocalRegex and
454 relative :Path actions in this component. Defaults to the action_namespace or
455 can be overridden from the "path" config key.
457 =head2 $self->register_actions($c)
459 Finds all applicable actions for this component, creates
460 Catalyst::Action objects (using $self->create_action) for them and
461 registers them with $c->dispatcher.
463 =head2 $self->get_action_methods()
465 Returns a list of L<Moose::Meta::Method> objects, doing the
466 L<MooseX::MethodAttributes::Role::Meta::Method> role, which are the set of
467 action methods for this package.
469 =head2 $self->register_action_methods($c, @methods)
471 Creates action objects for a set of action methods using C< create_action >,
472 and registers them with the dispatcher.
474 =head2 $self->create_action(%args)
476 Called with a hash of data to be use for construction of a new
477 Catalyst::Action (or appropriate sub/alternative class) object.
479 =head2 $self->_application
483 Returns the application instance stored by C<new()>
487 Catalyst Contributors, see Catalyst.pm
491 This program is free software, you can redistribute it and/or modify
492 it under the same terms as Perl itself.