X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=catagits%2FCatalyst-Action-REST.git;a=blobdiff_plain;f=lib%2FCatalyst%2FTraitFor%2FRequest%2FREST.pm;h=1b9c87252ea7c72f2e11b6044c0813630d7d0214;hp=b881a5830ebd34de8d3b2d3a5b2c46da4e25425d;hb=3bb36dcaabf34fef5c15b1bb74c5eb198a7f5168;hpb=e623bdf28cc0a79351b055872dedcc1300a5eaca

diff --git a/lib/Catalyst/TraitFor/Request/REST.pm b/lib/Catalyst/TraitFor/Request/REST.pm
index b881a58..1b9c872 100644
--- a/lib/Catalyst/TraitFor/Request/REST.pm
+++ b/lib/Catalyst/TraitFor/Request/REST.pm
@@ -3,13 +3,30 @@ use Moose::Role;
 use HTTP::Headers::Util qw(split_header_words);
 use namespace::autoclean;
 
+our $VERSION = '0.82';
+$VERSION = eval $VERSION;
+
 has [qw/ data accept_only /] => ( is => 'rw' );
 
-sub accepted_content_types {
+has accepted_content_types => (
+    is       => 'ro',
+    isa      => 'ArrayRef',
+    lazy     => 1,
+    builder  => '_build_accepted_content_types',
+    init_arg => undef,
+);
+
+has preferred_content_type => (
+    is       => 'ro',
+    isa      => 'Str',
+    lazy     => 1,
+    builder  => '_build_preferred_content_type',
+    init_arg => undef,
+);
+
+sub _build_accepted_content_types {
     my $self = shift;
 
-    return $self->{content_types} if $self->{content_types};
-
     my %types;
 
     # First, we use the content type in the HTTP Request.  It wins all.
@@ -49,11 +66,10 @@ sub accepted_content_types {
         }
     }
 
-    return $self->{content_types} =
-        [ sort { $types{$b} <=> $types{$a} } keys %types ];
+    [ sort { $types{$b} <=> $types{$a} } keys %types ];
 }
 
-sub preferred_content_type { $_[0]->accepted_content_types->[0] }
+sub _build_preferred_content_type { $_[0]->accepted_content_types->[0] }
 
 sub accepts {
     my $self = shift;
@@ -63,3 +79,86 @@ sub accepts {
 }
 
 1;
+__END__
+
+=head1 NAME
+
+Catalyst::TraitFor::Request::REST - A role to apply to Catalyst::Request giving it REST methods and attributes.
+
+=head1 SYNOPSIS
+
+     if ( $c->request->accepts('application/json') ) {
+         ...
+     }
+
+     my $types = $c->request->accepted_content_types();
+
+=head1 DESCRIPTION
+
+This is a L<Moose::Role> applied to L<Catalyst::Request> that adds a few
+methods to the request object to facilitate writing REST-y code.
+Currently, these methods are all related to the content types accepted by
+the client.
+
+=head1 METHODS
+
+=over
+
+=item data
+
+If the request went through the Deserializer action, this method will
+return the deserialized data structure.
+
+=item accepted_content_types
+
+Returns an array reference of content types accepted by the
+client.
+
+The list of types is created by looking at the following sources:
+
+=over 8
+
+=item * Content-type header
+
+If this exists, this will always be the first type in the list.
+
+=item * content-type parameter
+
+If the request is a GET request and there is a "content-type"
+parameter in the query string, this will come before any types in the
+Accept header.
+
+=item * Accept header
+
+This will be parsed and the types found will be ordered by the
+relative quality specified for each type.
+
+=back
+
+If a type appears in more than one of these places, it is ordered based on
+where it is first found.
+
+=item preferred_content_type
+
+This returns the first content type found. It is shorthand for:
+
+  $request->accepted_content_types->[0]
+
+=item accepts($type)
+
+Given a content type, this returns true if the type is accepted.
+
+Note that this does not do any wildcard expansion of types.
+
+=back
+
+=head1 AUTHORS
+
+See L<Catalyst::Action::REST> for authors.
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
+