package Catalyst::Controller;
use Moose;
+use Class::MOP;
+use Class::Load ':all';
+use String::RewritePrefix;
use Moose::Util qw/find_meta/;
-
+use List::Util qw/first/;
+use List::MoreUtils qw/uniq/;
use namespace::clean -except => 'meta';
-# Note - Must be done at compile time due to attributes (::AttrContainer)
-BEGIN { extends qw/Catalyst::Component Catalyst::AttrContainer/; }
+BEGIN {
+ extends qw/Catalyst::Component/;
+ with qw/MooseX::MethodAttributes::Role::AttrContainer::Inheritable/;
+}
+use MooseX::MethodAttributes;
use Catalyst::Exception;
use Catalyst::Utils;
with 'Catalyst::Component::ApplicationAttribute';
-has path_prefix =>
- (
- is => 'rw',
- isa => 'Str',
- init_arg => 'path',
- predicate => 'has_path_prefix',
- );
-
-has action_namespace =>
- (
- is => 'rw',
- isa => 'Str',
- init_arg => 'namespace',
- predicate => 'has_action_namespace',
- );
-
-has actions =>
- (
- is => 'rw',
- isa => 'HashRef',
- init_arg => undef,
- );
+has path_prefix => (
+ is => 'rw',
+ isa => 'Str',
+ init_arg => 'path',
+ predicate => 'has_path_prefix',
+);
+
+has action_namespace => (
+ is => 'rw',
+ isa => 'Str',
+ init_arg => 'namespace',
+ predicate => 'has_action_namespace',
+);
+
+has actions => (
+ accessor => '_controller_actions',
+ isa => 'HashRef',
+ init_arg => undef,
+);
+
+has _action_role_args => (
+ traits => [qw(Array)],
+ isa => 'ArrayRef[Str]',
+ init_arg => 'action_roles',
+ default => sub { [] },
+ handles => {
+ _action_role_args => 'elements',
+ },
+);
+
+has _action_roles => (
+ traits => [qw(Array)],
+ isa => 'ArrayRef[RoleName]',
+ init_arg => undef,
+ lazy => 1,
+ builder => '_build__action_roles',
+ handles => {
+ _action_roles => 'elements',
+ },
+);
+
+has action_args => (is => 'ro');
+
+# ->config(actions => { '*' => ...
+has _all_actions_attributes => (
+ is => 'ro',
+ isa => 'HashRef',
+ init_arg => undef,
+ lazy => 1,
+ builder => '_build__all_actions_attributes',
+);
sub BUILD {
my ($self, $args) = @_;
my $action = delete $args->{action} || {};
my $actions = delete $args->{actions} || {};
my $attr_value = $self->merge_config_hashes($actions, $action);
- $self->actions($attr_value);
+ $self->_controller_actions($attr_value);
+
+ # trigger lazy builder
+ $self->_all_actions_attributes;
+ $self->_action_roles;
+}
+
+sub _build__action_roles {
+ my $self = shift;
+ my @roles = $self->_expand_role_shortname($self->_action_role_args);
+ load_class($_) for @roles;
+ return \@roles;
+}
+
+sub _build__all_actions_attributes {
+ my ($self) = @_;
+ delete $self->_controller_actions->{'*'} || {};
}
=head1 NAME
package MyApp::Controller::Search
use base qw/Catalyst::Controller/;
- sub foo : Local {
+ sub foo : Local {
my ($self,$c,@args) = @_;
- ...
+ ...
} # Dispatches to /search/foo
=head1 DESCRIPTION
=cut
#I think both of these could be attributes. doesn't really seem like they need
-#to ble class data. i think that attributes +default would work just fine
-__PACKAGE__->mk_classdata($_) for qw/_dispatch_steps _action_class/;
+#to be class data. i think that attributes +default would work just fine
+__PACKAGE__->mk_classdata($_) for qw/_dispatch_steps _action_class _action_role_prefix/;
__PACKAGE__->_dispatch_steps( [qw/_BEGIN _AUTO _ACTION/] );
__PACKAGE__->_action_class('Catalyst::Action');
+__PACKAGE__->_action_role_prefix([ 'Catalyst::ActionRole::' ]);
sub _DISPATCH : Private {
return $app->dispatcher->get_action($name, $self->action_namespace);
}
-#my opinion is that this whole sub really should be a builder method, not
+#my opinion is that this whole sub really should be a builder method, not
#something that happens on every call. Anyone else disagree?? -- groditi
## -- apparently this is all just waiting for app/ctx split
around action_namespace => sub {
my $orig = shift;
my ( $self, $c ) = @_;
+ my $class = ref($self) || $self;
+ my $appclass = ref($c) || $c;
if( ref($self) ){
return $self->$orig if $self->has_action_namespace;
} else {
- return $self->config->{namespace} if exists $self->config->{namespace};
+ return $class->config->{namespace} if exists $class->config->{namespace};
}
my $case_s;
if( $c ){
- $case_s = $c->config->{case_sensitive};
+ $case_s = $appclass->config->{case_sensitive};
} else {
if ($self->isa('Catalyst')) {
- $case_s = $self->config->{case_sensitive};
+ $case_s = $class->config->{case_sensitive};
} else {
if (ref $self) {
- $case_s = $self->_application->config->{case_sensitive};
+ $case_s = ref($self->_application)->config->{case_sensitive};
} else {
confess("Can't figure out case_sensitive setting");
}
}
}
- my $namespace = Catalyst::Utils::class2prefix(ref($self) || $self, $case_s) || '';
+ my $namespace = Catalyst::Utils::class2prefix($self->catalyst_component_name, $case_s) || '';
$self->$orig($namespace) if ref($self);
return $namespace;
};
return $namespace;
};
+sub get_action_methods {
+ my $self = shift;
+ my $meta = find_meta($self) || confess("No metaclass setup for $self");
+ confess(
+ sprintf "Metaclass %s for %s cannot support register_actions.",
+ ref $meta, $meta->name,
+ ) unless $meta->can('get_nearest_methods_with_attributes');
+ my @methods = $meta->get_nearest_methods_with_attributes;
+
+ # actions specified via config are also action_methods
+ push(
+ @methods,
+ map {
+ $meta->find_method_by_name($_)
+ || confess( sprintf 'Action "%s" is not available from controller %s',
+ $_, ref $self )
+ } keys %{ $self->_controller_actions }
+ ) if ( ref $self );
+ return uniq @methods;
+}
+
sub register_actions {
my ( $self, $c ) = @_;
- my $class = ref $self || $self;
+ $self->register_action_methods( $c, $self->get_action_methods );
+}
+
+sub register_action_methods {
+ my ( $self, $c, @methods ) = @_;
+ my $class = $self->catalyst_component_name;
#this is still not correct for some reason.
my $namespace = $self->action_namespace($c);
- my $meta = find_meta($self);
- my %methods = map { $_->body => $_->name }
- $meta->get_all_methods;
-
- # Advanced inheritance support for plugins and the like
- #moose todo: migrate to eliminate CDI compat
- my @action_cache;
- for my $isa ( $meta->superclasses, $class ) {
- if(my $coderef = $isa->can('_action_cache')){
- push(@action_cache, @{ $isa->$coderef });
+
+ # FIXME - fugly
+ if (!blessed($self) && $self eq $c && scalar(@methods)) {
+ my @really_bad_methods = grep { ! /^_(DISPATCH|BEGIN|AUTO|ACTION|END)$/ } map { $_->name } @methods;
+ if (scalar(@really_bad_methods)) {
+ $c->log->warn("Action methods (" . join(', ', @really_bad_methods) . ") found defined in your application class, $self. This is deprecated, please move them into a Root controller.");
}
}
- foreach my $cache (@action_cache) {
- my $code = $cache->[0];
- my $method = delete $methods{$code}; # avoid dupe registers
- next unless $method;
- my $attrs = $self->_parse_attrs( $c, $method, @{ $cache->[1] } );
+ foreach my $method (@methods) {
+ my $name = $method->name;
+ # Horrible hack! All method metaclasses should have an attributes
+ # method, core Moose bug - see r13354.
+ my $attributes = $method->can('attributes') ? $method->attributes : [];
+ my $attrs = $self->_parse_attrs( $c, $name, @{ $attributes } );
if ( $attrs->{Private} && ( keys %$attrs > 1 ) ) {
- $c->log->debug( 'Bad action definition "'
- . join( ' ', @{ $cache->[1] } )
- . qq/" for "$class->$method"/ )
+ $c->log->warn( 'Bad action definition "'
+ . join( ' ', @{ $attributes } )
+ . qq/" for "$class->$name"/ )
if $c->debug;
next;
}
- my $reverse = $namespace ? "${namespace}/${method}" : $method;
+ my $reverse = $namespace ? "${namespace}/${name}" : $name;
my $action = $self->create_action(
- name => $method,
- code => $code,
+ name => $name,
+ code => $method->body,
reverse => $reverse,
namespace => $namespace,
class => $class,
}
}
-sub create_action {
+sub _apply_action_class_roles {
+ my ($self, $class, @roles) = @_;
+
+ load_class($_) for @roles;
+ my $meta = Moose::Meta::Class->initialize($class)->create_anon_class(
+ superclasses => [$class],
+ roles => \@roles,
+ cache => 1,
+ );
+ $meta->add_method(meta => sub { $meta });
+
+ return $meta->name;
+}
+
+sub action_class {
my $self = shift;
my %args = @_;
my $class = (exists $args{attributes}{ActionClass}
- ? $args{attributes}{ActionClass}[0]
- : $self->_action_class);
+ ? $args{attributes}{ActionClass}[0]
+ : $self->_action_class);
- Class::MOP::load_class($class);
- return $class->new( \%args );
+ load_class($class);
+ return $class;
+}
+
+sub create_action {
+ my $self = shift;
+ my %args = @_;
+
+ my $class = $self->action_class(%args);
+
+ load_class($class);
+ Moose->init_meta(for_class => $class)
+ unless Class::MOP::does_metaclass_exist($class);
+
+ unless ($args{name} =~ /^_(DISPATCH|BEGIN|AUTO|ACTION|END)$/) {
+ my @roles = $self->gather_action_roles(%args);
+ push @roles, $self->gather_default_action_roles(%args);
+
+ $class = $self->_apply_action_class_roles($class, @roles) if @roles;
+ }
+
+ my $action_args = (
+ ref($self)
+ ? $self->action_args
+ : $self->config->{action_args}
+ );
+
+ my %extra_args = (
+ %{ $action_args->{'*'} || {} },
+ %{ $action_args->{ $args{name} } || {} },
+ );
+
+ return $class->new({ %extra_args, %args });
+}
+
+sub gather_action_roles {
+ my ($self, %args) = @_;
+ return (
+ (blessed $self ? $self->_action_roles : ()),
+ @{ $args{attributes}->{Does} || [] },
+ );
+}
+
+sub gather_default_action_roles {
+ my ($self, %args) = @_;
+ my @roles = ();
+ push @roles, 'Catalyst::ActionRole::HTTPMethods'
+ if $args{attributes}->{Method};
+
+ push @roles, 'Catalyst::ActionRole::ConsumesContent'
+ if $args{attributes}->{Consumes};
+
+ push @roles, 'Catalyst::ActionRole::Scheme'
+ if $args{attributes}->{Scheme};
+ return @roles;
}
sub _parse_attrs {
}
}
- #I know that the original behavior was to ignore action if actions was set
- # but i actually think this may be a little more sane? we can always remove
- # the merge behavior quite easily and go back to having actions have
- # presedence over action by modifying the keys. i honestly think this is
- # superior while mantaining really high degree of compat
- my $actions;
+ my ($actions_config, $all_actions_config);
if( ref($self) ) {
- $actions = $self->actions;
+ $actions_config = $self->_controller_actions;
+ # No, you're not getting actions => { '*' => ... } with actions in MyApp.
+ $all_actions_config = $self->_all_actions_attributes;
} else {
my $cfg = $self->config;
- $actions = $self->merge_config_hashes($cfg->{actions}, $cfg->{action});
+ $actions_config = $self->merge_config_hashes($cfg->{actions}, $cfg->{action});
+ $all_actions_config = {};
}
- %raw_attributes = ((exists $actions->{'*'} ? %{$actions->{'*'}} : ()),
- %raw_attributes,
- (exists $actions->{$name} ? %{$actions->{$name}} : ()));
+ %raw_attributes = (
+ %raw_attributes,
+ # Note we deep copy array refs here to stop crapping on config
+ # when attributes are parsed. RT#65463
+ exists $actions_config->{$name} ? map { ref($_) eq 'ARRAY' ? [ @$_ ] : $_ } %{ $actions_config->{$name } } : (),
+ );
+ # Private actions with additional attributes will raise a warning and then
+ # be ignored. Adding '*' arguments to the default _DISPATCH / etc. methods,
+ # which are Private, will prevent those from being registered. They should
+ # probably be turned into :Actions instead, or we might want to otherwise
+ # disambiguate between those built-in internal actions and user-level
+ # Private ones.
+ %raw_attributes = (%{ $all_actions_config }, %raw_attributes)
+ unless $raw_attributes{Private};
my %final_attributes;
- foreach my $key (keys %raw_attributes) {
+ while (my ($key, $value) = each %raw_attributes){
+ my $new_attrs = $self->_parse_attr($c, $name, $key => $value );
+ push @{ $final_attributes{$_} }, @{ $new_attrs->{$_} } for keys %$new_attrs;
+ }
- my $raw = $raw_attributes{$key};
+ return \%final_attributes;
+}
- foreach my $value (ref($raw) eq 'ARRAY' ? @$raw : $raw) {
+sub _parse_attr {
+ my ($self, $c, $name, $key, $values) = @_;
- my $meth = "_parse_${key}_attr";
- if ( my $code = $self->can($meth) ) {
- ( $key, $value ) = $self->$code( $c, $name, $value );
+ my %final_attributes;
+ foreach my $value (ref($values) eq 'ARRAY' ? @$values : $values) {
+ my $meth = "_parse_${key}_attr";
+ if ( my $code = $self->can($meth) ) {
+ my %new_attrs = $self->$code( $c, $name, $value );
+ while (my ($new_key, $value) = each %new_attrs){
+ my $new_attrs = $key eq $new_key ?
+ { $new_key => [$value] } :
+ $self->_parse_attr($c, $name, $new_key => $value );
+ push @{ $final_attributes{$_} }, @{ $new_attrs->{$_} } for keys %$new_attrs;
}
+ }
+ else {
push( @{ $final_attributes{$key} }, $value );
}
}
sub _parse_Global_attr {
my ( $self, $c, $name, $value ) = @_;
- return $self->_parse_Path_attr( $c, $name, "/$name" );
+ # _parse_attr will call _parse_Path_attr for us
+ return Path => "/$name";
}
sub _parse_Absolute_attr { shift->_parse_Global_attr(@_); }
sub _parse_Local_attr {
my ( $self, $c, $name, $value ) = @_;
- return $self->_parse_Path_attr( $c, $name, $name );
+ # _parse_attr will call _parse_Path_attr for us
+ return Path => $name;
}
sub _parse_Relative_attr { shift->_parse_Local_attr(@_); }
}
}
-sub _parse_Regex_attr {
- my ( $self, $c, $name, $value ) = @_;
- return ( 'Regex', $value );
-}
-
-sub _parse_Regexp_attr { shift->_parse_Regex_attr(@_); }
-
-sub _parse_LocalRegex_attr {
- my ( $self, $c, $name, $value ) = @_;
- unless ( $value =~ s/^\^// ) { $value = "(?:.*?)$value"; }
-
- my $prefix = $self->path_prefix( $c );
- $prefix .= '/' if length( $prefix );
-
- return ( 'Regex', "^${prefix}${value}" );
-}
-
-sub _parse_LocalRegexp_attr { shift->_parse_LocalRegex_attr(@_); }
-
sub _parse_Chained_attr {
my ($self, $c, $name, $value) = @_;
}
sub _parse_PathPrefix_attr {
- my $self = shift;
- return PathPart => $self->path_prefix;
+ my ( $self, $c ) = @_;
+ return PathPart => $self->path_prefix($c);
}
sub _parse_ActionClass_attr {
my ( $self, $c, $name, $value ) = @_;
- unless ( $value =~ s/^\+// ) {
- $value = join('::', $self->_action_class, $value );
- }
+ my $appname = $self->_application;
+ $value = Catalyst::Utils::resolve_namespace($appname . '::Action', $self->_action_class, $value);
return ( 'ActionClass', $value );
}
my ( $self, $c, $name, $value ) = @_;
my $appclass = Catalyst::Utils::class2appclass($self);
- $value = "${appclass}::Action::${value}";
+ $value = "+${appclass}::Action::${value}";
return ( 'ActionClass', $value );
}
+sub _parse_Does_attr {
+ my ($self, $app, $name, $value) = @_;
+ return Does => $self->_expand_role_shortname($value);
+}
+
+sub _parse_GET_attr { Method => 'GET' }
+sub _parse_POST_attr { Method => 'POST' }
+sub _parse_PUT_attr { Method => 'PUT' }
+sub _parse_DELETE_attr { Method => 'DELETE' }
+sub _parse_OPTIONS_attr { Method => 'OPTIONS' }
+sub _parse_HEAD_attr { Method => 'HEAD' }
+sub _parse_PATCH_attr { Method => 'PATCH' }
+
+sub _expand_role_shortname {
+ my ($self, @shortnames) = @_;
+ my $app = $self->_application;
+
+ my $prefix = $self->can('_action_role_prefix') ? $self->_action_role_prefix : ['Catalyst::ActionRole::'];
+ my @prefixes = (qq{${app}::ActionRole::}, @$prefix);
+
+ return String::RewritePrefix->rewrite(
+ { '' => sub {
+ my $loaded = load_first_existing_class(
+ map { "$_$_[0]" } @prefixes
+ );
+ return first { $loaded =~ /^$_/ }
+ sort { length $b <=> length $a } @prefixes;
+ },
+ '~' => $prefixes[0],
+ '+' => '' },
+ @shortnames,
+ );
+}
+
__PACKAGE__->meta->make_immutable;
1;
will be bound to 'foo/bar'. The default Root controller is an example
of setting namespace to '' (the null string).
-=head2 path
+=head2 path
Sets 'path_prefix', as described below.
+=head2 action
+
+Allows you to set the attributes that the dispatcher creates actions out of.
+This allows you to do 'rails style routes', or override some of the
+attribute definitions of actions composed from Roles.
+You can set arguments globally (for all actions of the controller) and
+specifically (for a single action).
+
+ __PACKAGE__->config(
+ action => {
+ '*' => { Chained => 'base', Args => 0 },
+ base => { Chained => '/', PathPart => '', CaptureArgs => 0 },
+ },
+ );
+
+In the case above every sub in the package would be made into a Chain
+endpoint with a URI the same as the sub name for each sub, chained
+to the sub named C<base>. Ergo dispatch to C</example> would call the
+C<base> method, then the C<example> method.
+
+=head2 action_args
+
+Allows you to set constructor arguments on your actions. You can set arguments
+globally and specifically (as above).
+This is particularly useful when using C<ActionRole>s
+(L<Catalyst::Controller::ActionRole>) and custom C<ActionClass>es.
+
+ __PACKAGE__->config(
+ action_args => {
+ '*' => { globalarg1 => 'hello', globalarg2 => 'goodbye' },
+ 'specific_action' => { customarg => 'arg1' },
+ },
+ );
+
+In the case above the action class associated with C<specific_action> would get
+passed the following arguments, in addition to the normal action constructor
+arguments, when it is instantiated:
+
+ (globalarg1 => 'hello', globalarg2 => 'goodbye', customarg => 'arg1')
+
=head1 METHODS
-=head2 $class->new($app, @args)
+=head2 BUILDARGS ($app, @args)
-Proxies through to NEXT::new and stashes the application instance as
-$self->_application.
+From L<Catalyst::Component::ApplicationAttribute>, stashes the application
+instance as $self->_application.
=head2 $self->action_for('name')
Returns the Catalyst::Action object (if any) for a given method name
in this component.
-=head2 $self->register_actions($c)
-
-Finds all applicable actions for this component, creates
-Catalyst::Action objects (using $self->create_action) for them and
-registers them with $c->dispatcher.
-
=head2 $self->action_namespace($c)
Returns the private namespace for actions in this component. Defaults
=head2 $self->path_prefix($c)
-Returns the default path prefix for :PathPrefix, :Local, :LocalRegex and
+Returns the default path prefix for :PathPrefix, :Local and
relative :Path actions in this component. Defaults to the action_namespace or
can be overridden from the "path" config key.
+=head2 $self->register_actions($c)
+
+Finds all applicable actions for this component, creates
+Catalyst::Action objects (using $self->create_action) for them and
+registers them with $c->dispatcher.
+
+=head2 $self->get_action_methods()
+
+Returns a list of L<Moose::Meta::Method> objects, doing the
+L<MooseX::MethodAttributes::Role::Meta::Method> role, which are the set of
+action methods for this package.
+
+=head2 $self->register_action_methods($c, @methods)
+
+Creates action objects for a set of action methods using C< create_action >,
+and registers them with the dispatcher.
+
+=head2 $self->action_class(%args)
+
+Used when a controller is creating an action to determine the correct base
+action class to use.
+
=head2 $self->create_action(%args)
Called with a hash of data to be use for construction of a new
Catalyst::Action (or appropriate sub/alternative class) object.
-Primarily designed for the use of register_actions.
+=head2 $self->gather_action_roles(\%action_args)
+
+Gathers the list of roles to apply to an action with the given %action_args.
+
+=head2 $self->gather_default_action_roles(\%action_args)
+
+returns a list of action roles to be applied based on core, builtin rules.
+Currently only the L<Catalyst::ActionRole::HTTPMethods> role is applied
+this way.
=head2 $self->_application
Returns the application instance stored by C<new()>
+=head1 ACTION SUBROUTINE ATTRIBUTES
+
+Please see L<Catalyst::Manual::Intro> for more details
+
+Think of action attributes as a sort of way to record metadata about an action,
+similar to how annotations work in other languages you might have heard of.
+Generally L<Catalyst> uses these to influence how the dispatcher sees your
+action and when it will run it in response to an incoming request. They can
+also be used for other things. Here's a summary, but you should refer to the
+linked manual page for additional help.
+
+=head2 Global
+
+ sub homepage :Global { ... }
+
+A global action defined in any controller always runs relative to your root.
+So the above is the same as:
+
+ sub myaction :Path("/homepage") { ... }
+
+=head2 Absolute
+
+Status: Deprecated alias to L</Global>.
+
+=head2 Local
+
+Alias to "Path("$action_name"). The following two actions are the same:
+
+ sub myaction :Local { ... }
+ sub myaction :Path('myaction') { ... }
+
+=head2 Relative
+
+Status: Deprecated alias to L</Local>
+
+=head2 Path
+
+Handle various types of paths:
+
+ package MyApp::Controller::Baz {
+
+ ...
+
+ sub myaction1 :Path { ... } # -> /baz
+ sub myaction2 :Path('foo') { ... } # -> /baz/foo
+ sub myaction2 :Path('/bar') { ... } # -> /bar
+ }
+
+This is a general toolbox for attaching your action to a given path.
+
+
+=head2 Regex
+
+=head2 Regexp
+
+B<Status: Deprecated.> Use Chained methods or other techniques.
+If you really depend on this, install the standalone
+L<Catalyst::DispatchType::Regex> distribution.
+
+A global way to match a give regular expression in the incoming request path.
+
+=head2 LocalRegex
+
+=head2 LocalRegexp
+
+B<Status: Deprecated.> Use Chained methods or other techniques.
+If you really depend on this, install the standalone
+L<Catalyst::DispatchType::Regex> distribution.
+
+Like L</Regex> but scoped under the namespace of the containing controller
+
+=head2 Chained
+
+=head2 ChainedParent
+
+=head2 PathPrefix
+
+=head2 PathPart
+
+=head2 CaptureArgs
+
+Please see L<Catalyst::DispatchType::Chained>
+
+=head2 ActionClass
+
+Set the base class for the action, defaults to L</Catalyst::Action>. It is now
+preferred to use L</Does>.
+
+=head2 MyAction
+
+Set the ActionClass using a custom Action in your project namespace.
+
+The following is exactly the same:
+
+ sub foo_action1 : Local ActionClass('+MyApp::Action::Bar') { ... }
+ sub foo_action2 : Local MyAction('Bar') { ... }
+
+=head2 Does
+
+ package MyApp::Controller::Zoo;
+
+ sub foo : Local Does('Moo') { ... } # Catalyst::ActionRole::
+ sub bar : Local Does('~Moo') { ... } # MyApp::ActionRole::Moo
+ sub baz : Local Does('+MyApp::ActionRole::Moo') { ... }
+
+=head2 GET
+
+=head2 POST
+
+=head2 PUT
+
+=head2 DELETE
+
+=head2 OPTION
+
+=head2 HEAD
+
+=head2 PATCH
+
+=head2 Method('...')
+
+Sets the give action path to match the specified HTTP method, or via one of the
+broadly accepted methods of overriding the 'true' method (see
+L<Catalyst::ActionRole::HTTPMethods>).
+
+=head2 Args
+
+When used with L</Path> indicates the number of arguments expected in
+the path. However if no Args value is set, assumed to 'slurp' all
+remaining path pars under this namespace.
+
+=head2 Consumes('...')
+
+Matches the current action against the content-type of the request. Typically
+this is used when the request is a POST or PUT and you want to restrict the
+submitted content type. For example, you might have an HTML for that either
+returns classic url encoded form data, or JSON when Javascript is enabled. In
+this case you may wish to match either incoming type to one of two different
+actions, for properly processing.
+
+Examples:
+
+ sub is_json : Chained('start') Consumes('application/json') { ... }
+ sub is_urlencoded : Chained('start') Consumes('application/x-www-form-urlencoded') { ... }
+ sub is_multipart : Chained('start') Consumes('multipart/form-data') { ... }
+
+To reduce boilerplate, we include the following content type shortcuts:
+
+Examples
+
+ sub is_json : Chained('start') Consume(JSON) { ... }
+ sub is_urlencoded : Chained('start') Consumes(UrlEncoded) { ... }
+ sub is_multipart : Chained('start') Consumes(Multipart) { ... }
+
+You may specify more than one match:
+
+ sub is_more_than_one
+ : Chained('start')
+ : Consumes('application/x-www-form-urlencoded')
+ : Consumes('multipart/form-data')
+
+ sub is_more_than_one
+ : Chained('start')
+ : Consumes(UrlEncoded)
+ : Consumes(Multipart)
+
+Since it is a common case the shortcut C<HTMLForm> matches both
+'application/x-www-form-urlencoded' and 'multipart/form-data'. Here's the full
+list of available shortcuts:
+
+ JSON => 'application/json',
+ JS => 'application/javascript',
+ PERL => 'application/perl',
+ HTML => 'text/html',
+ XML => 'text/XML',
+ Plain => 'text/plain',
+ UrlEncoded => 'application/x-www-form-urlencoded',
+ Multipart => 'multipart/form-data',
+ HTMLForm => ['application/x-www-form-urlencoded','multipart/form-data'],
+
+Please keep in mind that when dispatching, L<Catalyst> will match the first most
+relevant case, so if you use the C<Consumes> attribute, you should place your
+most accurate matches early in the Chain, and your 'catchall' actions last.
+
+See L<Catalyst::ActionRole::ConsumesContent> for more.
+
+=head2 Scheme(...)
+
+Allows you to specify a URI scheme for the action or action chain. For example
+you can required that a given path be C<https> or that it is a websocket endpoint
+C<ws> or C<wss>. For an action chain you may currently only have one defined
+Scheme.
+
+ package MyApp::Controller::Root;
+
+ use base 'Catalyst::Controller';
+
+ sub is_http :Path(scheme) Scheme(http) Args(0) {
+ my ($self, $c) = @_;
+ $c->response->body("is_http");
+ }
+
+ sub is_https :Path(scheme) Scheme(https) Args(0) {
+ my ($self, $c) = @_;
+ $c->response->body("is_https");
+ }
+
+In the above example http://localhost/root/scheme would match the first
+action (is_http) but https://localhost/root/scheme would match the second.
+
+As an added benefit, if an action or action chain defines a Scheme, when using
+$c->uri_for the scheme of the generated URL will use what you define in the action
+or action chain (the current behavior is to set the scheme based on the current
+incoming request). This makes it easier to use uri_for on websites where some
+paths are secure and others are not. You may also use this to other schemes
+like websockets.
+
+See L<Catalyst::ActionRole::Scheme> for more.
+
+=head1 OPTIONAL METHODS
+
+=head2 _parse_[$name]_attr
+
+Allows you to customize parsing of subroutine attributes.
+
+ sub myaction1 :Path TwoArgs { ... }
+
+ sub _parse_TwoArgs_attr {
+ my ( $self, $c, $name, $value ) = @_;
+ # $self -> controller instance
+ #
+ return(Args => 2);
+ }
+
+Please note that this feature does not let you actually assign new functions
+to actions via subroutine attributes, but is really more for creating useful
+aliases to existing core and extended attributes, and transforms based on
+existing information (like from configuration). Code for actually doing
+something meaningful with the subroutine attributes will be located in the
+L<Catalyst::Action> classes (or your subclasses), L<Catalyst::Dispatcher> and
+in subclasses of L<Catalyst::DispatchType>. Remember these methods only get
+called basically once when the application is starting, not per request!
+
=head1 AUTHORS
Catalyst Contributors, see Catalyst.pm
=head1 COPYRIGHT
-This program is free software, you can redistribute it and/or modify
+This library is free software. You can redistribute it and/or modify
it under the same terms as Perl itself.
=cut
projects / catagits/Catalyst-Runtime.git / blobdiff