package Catalyst::Action;
-use strict;
-use base qw/Class::Accessor::Fast/;
+=head1 NAME
+
+Catalyst::Action - Catalyst Action
+
+=head1 SYNOPSIS
+
+ <form action="[%c.uri_for(c.action)%]">
+
+ $c->forward( $action->private_path );
+
+=head1 DESCRIPTION
+
+This class represents a Catalyst Action. You can access the object for the
+currently dispatched action via $c->action. See the L<Catalyst::Dispatcher>
+for more information on how actions are dispatched. Actions are defined in
+L<Catalyst::Controller> subclasses.
+
+=cut
+
+use Moose;
+use Scalar::Util 'looks_like_number';
+use Moose::Util::TypeConstraints ();
+with 'MooseX::Emulate::Class::Accessor::Fast';
+use namespace::clean -except => 'meta';
+
+has class => (is => 'rw');
+has namespace => (is => 'rw');
+has 'reverse' => (is => 'rw');
+has attributes => (is => 'rw');
+has name => (is => 'rw');
+has code => (is => 'rw');
+has private_path => (
+ reader => 'private_path',
+ isa => 'Str',
+ lazy => 1,
+ required => 1,
+ default => sub { '/'.shift->reverse },
+);
+
+has number_of_args => (
+ is=>'ro',
+ init_arg=>undef,
+ isa=>'Int|Undef',
+ required=>1,
+ lazy=>1,
+ builder=>'_build_number_of_args');
+
+ sub _build_number_of_args {
+ my $self = shift;
+ return 0 unless exists $self->attributes->{Args};
+ if(!defined($self->attributes->{Args}[0])) {
+ # When its 'Args' that internal cue for 'unlimited'
+ return undef;
+ } elsif(looks_like_number($self->attributes->{Args}[0])) {
+ # 'old school' numberd args (is allowed to be undef as well)
+ return $self->attributes->{Args}[0];
+ } else {
+ # new hotness named arg constraints
+ return $self->number_of_args_constraints;
+ }
+ }
+
+has args_constraints => (
+ is=>'ro',
+ init_arg=>undef,
+ traits=>['Array'],
+ isa=>'ArrayRef',
+ required=>1,
+ lazy=>1,
+ builder=>'_build_args_constraints',
+ handles => {
+ has_args_constraints => 'count',
+ number_of_args_constraints => 'count',
+ });
+
+ sub _build_args_constraints {
+ my $self = shift;
+ my @arg_protos = @{$self->attributes->{Args}||[]};
+
+ return [] unless scalar(@arg_protos);
+ # If there is only one arg and it looks like a number
+ # we assume its 'classic' and the number is the number of
+ # constraints.
+ my @args = ();
+ if(
+ scalar(@arg_protos) == 1 &&
+ looks_like_number($arg_protos[0])
+ ) {
+ return \@args;
+ } else {
+ @args = map { Moose::Util::TypeConstraints::find_or_parse_type_constraint($_) || die "$_ is not a constraint!" } @arg_protos;
+ }
-__PACKAGE__->mk_accessors(qw/code namespace reverse prefix attributes/);
+ return \@args;
+ }
use overload (
# Stringify to reverse for debug output etc.
q{""} => sub { shift->{reverse} },
- # Codulate to encapsulated action coderef
- '&{}' => sub { shift->{code} },
+ # Codulate to execute to invoke the encapsulated action coderef
+ '&{}' => sub { my $self = shift; sub { $self->execute(@_); }; },
+
+ # Make general $stuff still work
+ fallback => 1,
);
-=head1 NAME
+no warnings 'recursion';
-Catalyst::Action - Catalyst Action
+sub dispatch { # Execute ourselves against a context
+ my ( $self, $c ) = @_;
+ return $c->execute( $self->class, $self );
+}
-=head1 SYNOPSIS
+sub execute {
+ my $self = shift;
+ $self->code->(@_);
+}
-See L<Catalyst>.
+sub match {
+ my ( $self, $c ) = @_;
+ #would it be unreasonable to store the number of arguments
+ #the action has as its own attribute?
+ #it would basically eliminate the code below. ehhh. small fish
+ return 1 unless exists $self->attributes->{Args};
+ my $args = $self->attributes->{Args}[0];
+ return 1 unless defined($args) && length($args);
-=head1 DESCRIPTION
+ if($self->has_args_constraints) {
+ for my $i($#{ $c->req->args }) {
+ $self->args_constraints->[$i]->check($c->req->args->[$i]) || return 0;
+ }
+ return 1;
+ } else {
+ return scalar( @{ $c->req->args } ) == $args;
+ }
+}
-=head1 METHODS
+sub match_captures { 1 }
-=over 4
+sub compare {
+ my ($a1, $a2) = @_;
-=item attributes
+ # Wen there is no declared Args for Local and Path (and Default??) we
+ # say that means any number of args... If Args exists however we use
+ # the number of args as determined by inspecting the value of it.
-=item code
+ my $a1_args = exists($a1->attributes->{Args}) ? $a1->number_of_args : ~0;
+ my $a2_args = exists($a2->attributes->{Args}) ? $a2->number_of_args : ~0;
-=item execute
+ # If we did have an Args but it was undefined value (:Args() or :Args), that
+ # is the cue for 'as many args as you like also...
+ #
+ $_ = defined($_) ? $_ : ~0
+ for $a1_args, $a2_args;
-=cut
+ return $a1_args <=> $a2_args;
+}
-sub execute { # Execute ourselves against a context
- my ( $self, $c ) = @_;
- return $c->execute( $self->namespace, $self );
+sub number_of_captures {
+ my ( $self ) = @_;
+
+ return 0 unless exists $self->attributes->{CaptureArgs};
+ return $self->attributes->{CaptureArgs}[0] || 0;
}
-=item namespace
+sub scheme {
+ return exists $_[0]->attributes->{Scheme} ? $_[0]->attributes->{Scheme}[0] : undef;
+}
-=item reverse
+sub list_extra_info {
+ my $self = shift;
+ return {
+ Args => $self->attributes->{Args}[0],
+ CaptureArgs => $self->number_of_captures,
+ }
+}
-=item new
+__PACKAGE__->meta->make_immutable;
-=cut
+1;
-sub new { # Dumbass constructor
- my ( $class, $attrs ) = @_;
- return bless { %{ $attrs || {} } }, $class;
-}
+__END__
-=back
+=head1 METHODS
+
+=head2 attributes
+
+The sub attributes that are set for this action, like Local, Path, Private
+and so on. This determines how the action is dispatched to.
+
+=head2 class
+
+Returns the name of the component where this action is defined.
+Derived by calling the L<catalyst_component_name|Catalyst::Component/catalyst_component_name>
+method on each component.
+
+=head2 code
+
+Returns a code reference to this action.
+
+=head2 dispatch( $c )
+
+Dispatch this action against a context.
+
+=head2 execute( $controller, $c, @args )
+
+Execute this action's coderef against a given controller with a given
+context and arguments
+
+=head2 match( $c )
+
+Check Args attribute, and makes sure number of args matches the setting.
+Always returns true if Args is omitted.
+
+=head2 match_captures ($c, $captures)
+
+Can be implemented by action class and action role authors. If the method
+exists, then it will be called with the request context and an array reference
+of the captures for this action.
+
+Returning true from this method causes the chain match to continue, returning
+makes the chain not match (and alternate, less preferred chains will be attempted).
+
+
+=head2 compare
+
+Compares 2 actions based on the value of the C<Args> attribute, with no C<Args>
+having the highest precedence.
+
+=head2 namespace
-=head1 AUTHOR
+Returns the private namespace this action lives in.
-Matt S. Trout
+=head2 reverse
+
+Returns the private path for this action.
+
+=head2 private_path
+
+Returns absolute private path for this action. Unlike C<reverse>, the
+C<private_path> of an action is always suitable for passing to C<forward>.
+
+=head2 name
+
+Returns the sub name of this action.
+
+=head2 number_of_args
+
+Returns the number of args this action expects. This is 0 if the action doesn't take any arguments and undef if it will take any number of arguments.
+
+=head2 number_of_captures
+
+Returns the number of captures this action expects for L<Chained|Catalyst::DispatchType::Chained> actions.
+
+=head2 list_extra_info
+
+A HashRef of key-values that an action can provide to a debugging screen
+
+=head2 scheme
+
+Any defined scheme for the action
+
+=head2 meta
+
+Provided by Moose.
+
+=head1 AUTHORS
+
+Catalyst Contributors, see Catalyst.pm
=head1 COPYRIGHT
-This program is free software, you can redistribute it and/or modify it under
+This library is free software. You can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
-1;
+
projects / catagits/Catalyst-Runtime.git / blobdiff