1 package Catalyst::Response;
5 use Moose::Util::TypeConstraints;
6 use namespace::autoclean;
8 with 'MooseX::Emulate::Class::Accessor::Fast';
13 writer => '_set_response_cb',
14 clearer => '_clear_response_cb',
15 predicate => '_has_response_cb',
18 subtype 'Catalyst::Engine::Types::Writer',
19 as duck_type([qw(write close)]);
23 isa => 'Catalyst::Engine::Types::Writer',
24 writer => '_set_writer',
25 clearer => '_clear_writer',
26 predicate => '_has_writer',
29 sub DEMOLISH { $_[0]->_writer->close if $_[0]->_has_writer }
31 has cookies => (is => 'rw', default => sub { {} });
32 has body => (is => 'rw', default => undef);
33 sub has_body { defined($_[0]->body) }
35 has location => (is => 'rw');
36 has status => (is => 'rw', default => 200);
37 has finalized_headers => (is => 'rw', default => 0);
40 isa => 'HTTP::Headers',
41 handles => [qw(content_encoding content_length content_type header)],
42 default => sub { HTTP::Headers->new() },
49 clearer => '_clear_context',
52 sub output { shift->body(@_) }
54 sub code { shift->status(@_) }
56 =head2 $self->write($buffer)
58 Writes the buffer to the client.
63 my ( $self, $buffer ) = @_;
65 # Finalize headers if someone manually writes output
66 $self->finalize_headers;
68 $buffer = q[] unless defined $buffer;
70 my $len = length($buffer);
71 $self->_writer->write($buffer);
76 =head2 $self->finalize_headers($c)
78 Abstract method, allows engines to write headers to response
82 sub finalize_headers {
85 # This is a less-than-pretty hack to avoid breaking the old
86 # Catalyst::Engine::PSGI. 5.9 Catalyst::Engine sets a response_cb and
87 # expects us to pass headers to it here, whereas Catalyst::Enngine::PSGI
88 # just pulls the headers out of $ctx->response in its run method and never
89 # sets response_cb. So take the lack of a response_cb as a sign that we
90 # don't need to set the headers.
92 return unless $self->_has_response_cb;
94 # If we already have a writer, we already did this, so don't do it again
95 return if $self->_has_writer;
98 $self->headers->scan(sub { push @headers, @_ });
100 my $writer = $self->_response_cb->([ $self->status, \@headers ]);
101 $self->_set_writer($writer);
102 $self->_clear_response_cb;
109 Catalyst::Response - stores output responding to the current client request
116 $res->content_encoding;
117 $res->content_length;
129 This is the Catalyst Response class, which provides methods for responding to
130 the current client request. The appropriate L<Catalyst::Engine> for your environment
131 will turn the Catalyst::Response into a HTTP Response and return it to the client.
135 =head2 $res->body( $text | $fh | $iohandle_object )
137 $c->response->body('Catalyst rocks!');
139 Sets or returns the output (text or binary data). If you are returning a large body,
140 you might want to use a L<IO::Handle> type of object (Something that implements the read method
141 in the same fashion), or a filehandle GLOB. Catalyst
142 will write it piece by piece into the response.
144 =head2 $res->has_body
146 Predicate which returns true when a body has been set.
150 Alias for $res->status.
152 =head2 $res->content_encoding
154 Shortcut for $res->headers->content_encoding.
156 =head2 $res->content_length
158 Shortcut for $res->headers->content_length.
160 =head2 $res->content_type
162 Shortcut for $res->headers->content_type.
164 This value is typically set by your view or plugin. For example,
165 L<Catalyst::Plugin::Static::Simple> will guess the mime type based on the file
166 it found, while L<Catalyst::View::TT> defaults to C<text/html>.
170 Returns a reference to a hash containing cookies to be set. The keys of the
171 hash are the cookies' names, and their corresponding values are hash
172 references used to construct a L<CGI::Simple::Cookie> object.
174 $c->response->cookies->{foo} = { value => '123' };
176 The keys of the hash reference on the right correspond to the L<CGI::Simple::Cookie>
177 parameters of the same name, except they are used without a leading dash.
178 Possible parameters are:
198 Shortcut for $res->headers->header.
202 Returns an L<HTTP::Headers> object, which can be used to set headers.
204 $c->response->headers->header( 'X-Catalyst' => $Catalyst::VERSION );
208 Alias for $res->body.
210 =head2 $res->redirect( $url, $status )
212 Causes the response to redirect to the specified URL. The default status is
215 $c->response->redirect( 'http://slashdot.org' );
216 $c->response->redirect( 'http://slashdot.org', 307 );
218 This is a convenience method that sets the Location header to the
219 redirect destination, and then sets the response status. You will
220 want to C< return > or C<< $c->detach() >> to interrupt the normal
221 processing flow if you want the redirect to occur straight away.
223 B<Note:> do not give a relative URL as $url, i.e: one that is not fully
224 qualified (= C<http://...>, etc.) or that starts with a slash
225 (= C</path/here>). While it may work, it is not guaranteed to do the right
226 thing and is not a standard behaviour. You may opt to use uri_for() or
227 uri_for_action() instead.
235 my $location = shift;
236 my $status = shift || 302;
238 $self->location($location);
239 $self->status($status);
242 return $self->location;
245 =head2 $res->location
247 Sets or returns the HTTP 'Location'.
251 Sets or returns the HTTP status.
253 $c->response->status(404);
255 $res->code is an alias for this, to match HTTP::Response->code.
257 =head2 $res->write( $data )
259 Writes $data to the output stream.
261 =head2 $res->print( @data )
263 Prints @data to the output stream, separated by $,. This lets you pass
264 the response object to functions that want to write to an L<IO::Handle>.
268 Ensures that the response is flushed and closed at the end of the
281 defined $self->write($data) or return;
284 defined $self->write($,) or return;
285 defined $self->write($_) or return;
287 defined $self->write($\) or return;
294 Catalyst Contributors, see Catalyst.pm
298 This library is free software. You can redistribute it and/or modify
299 it under the same terms as Perl itself.
303 __PACKAGE__->meta->make_immutable;