3 # Created by: Adam Jacob, Marchex, <adam@hjksolutions.com>
4 # Created on: 10/12/2006 03:00:32 PM PDT
8 package Catalyst::Action::REST;
13 use base 'Catalyst::Action';
15 use Moose::Util qw(does_role);
17 use Catalyst::RequestRole::REST;
18 use Catalyst::Controller::REST;
19 use namespace::clean -except => 'meta';
21 BEGIN { require 5.008001; }
23 our $VERSION = '0.71';
27 Catalyst::Action::REST - Automated REST Method Dispatching
31 sub foo :Local :ActionClass('REST') {
32 ... do setup for HTTP method specific handlers ...
36 ... do something for GET requests ...
40 ... do somethign for PUT requests ...
45 This Action handles doing automatic method dispatching for REST requests. It
46 takes a normal Catalyst action, and changes the dispatch to append an
47 underscore and method name.
49 For example, in the synopsis above, calling GET on "/foo" would result in
50 the foo_GET method being dispatched.
52 If a method is requested that is not implemented, this action will
53 return a status 405 (Method Not Found). It will populate the "Allow" header
54 with the list of implemented request methods. You can override this behavior
55 by implementing a custom 405 handler like so:
57 sub foo_not_implemented {
58 ... handle not implemented methods ...
61 If you do not provide an _OPTIONS subroutine, we will automatically respond
62 with a 200 OK. The "Allow" header will be populated with the list of
63 implemented request methods.
65 It is likely that you really want to look at L<Catalyst::Controller::REST>,
66 which brings this class together with automatic Serialization of requests
69 When you use this module, the request class will be changed to
70 L<Catalyst::Request::REST>.
78 This method overrides the default dispatch mechanism to the re-dispatching
79 mechanism described above.
87 Catalyst::RequestRole::REST->meta->apply($c->request)
88 unless does_role($c->request, 'Catalyst::RequestRole::REST');
90 my $controller = $c->component( $self->class );
91 my $method = $self->name . "_" . uc( $c->request->method );
92 if ( $controller->can($method) ) {
93 $c->execute( $self->class, $self, @{ $c->req->args } );
94 return $controller->$method( $c, @{ $c->req->args } );
96 if ( $c->request->method eq "OPTIONS" ) {
97 return $self->_return_options($c);
99 my $handle_ni = $self->name . "_not_implemented";
100 if ( $controller->can($handle_ni) ) {
101 return $controller->$handle_ni( $c, @{ $c->req->args } );
103 return $self->_return_not_implemented($c);
109 sub _return_options {
110 my ( $self, $c ) = @_;
112 my @allowed = $self->_get_allowed_methods($c);
113 $c->response->content_type('text/plain');
114 $c->response->status(200);
115 $c->response->header( 'Allow' => \@allowed );
118 sub _get_allowed_methods {
119 my ( $self, $c ) = @_;
121 my $controller = $self->class;
122 my $methods = Class::Inspector->methods($controller);
124 foreach my $method ( @{$methods} ) {
125 my $name = $self->name;
126 if ( $method =~ /^$name\_(.+)$/ ) {
127 push( @allowed, $1 );
133 sub _return_not_implemented {
134 my ( $self, $c ) = @_;
136 my @allowed = $self->_get_allowed_methods($c);
137 $c->response->content_type('text/plain');
138 $c->response->status(405);
139 $c->response->header( 'Allow' => \@allowed );
140 $c->response->body( "Method "
141 . $c->request->method
142 . " not implemented for "
143 . $c->uri_for( $self->reverse ) );
152 You likely want to look at L<Catalyst::Controller::REST>, which implements
153 a sensible set of defaults for a controller doing REST.
155 L<Catalyst::Action::Serialize>, L<Catalyst::Action::Deserialize>
157 =head1 TROUBLESHOOTING
161 =item Q: I'm getting a "415 Unsupported Media Type" error. What gives?!
163 A: Most likely, you haven't set Content-type equal to "application/json", or one of the
164 accepted return formats. You can do this by setting it in your query string thusly:
165 ?content-type=application%2Fjson (where %2F == / uri escaped).
167 **NOTE** Apache will refuse %2F unless configured otherise.
168 Make sure AllowEncodedSlashes On is in your httpd.conf file in order for this to run smoothly.
179 J. Shirley <jshirley@gmail.com>
189 Daisuke Maki <daisuke@endeworks.jp>
193 Adam Jacob <adam@stalecoffee.org>, with lots of help from mst and jrockway
195 Marchex, Inc. paid me while I developed this module. (http://www.marchex.com)
199 You may distribute this code under the same terms as Perl itself.