John Napiorkowski > Catalyst-Runtime-5.90049_004 > Catalyst::Response

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Source   Latest Release: Catalyst-Runtime-5.90069_002

NAME ^

Catalyst::Response - stores output responding to the current client request

SYNOPSIS ^

    $res = $c->response;
    $res->body;
    $res->code;
    $res->content_encoding;
    $res->content_length;
    $res->content_type;
    $res->cookies;
    $res->header;
    $res->headers;
    $res->output;
    $res->redirect;
    $res->status;
    $res->write;

DESCRIPTION ^

This is the Catalyst Response class, which provides methods for responding to the current client request. The appropriate Catalyst::Engine for your environment will turn the Catalyst::Response into a HTTP Response and return it to the client.

METHODS ^

$res->body( $text | $fh | $iohandle_object )

    $c->response->body('Catalyst rocks!');

Sets or returns the output (text or binary data). If you are returning a large body, you might want to use a IO::Handle type of object (Something that implements the read method in the same fashion), or a filehandle GLOB. Catalyst will write it piece by piece into the response.

$res->has_body

Predicate which returns true when a body has been set.

$res->code

Alias for $res->status.

$res->content_encoding

Shortcut for $res->headers->content_encoding.

$res->content_length

Shortcut for $res->headers->content_length.

$res->content_type

Shortcut for $res->headers->content_type.

This value is typically set by your view or plugin. For example, Catalyst::Plugin::Static::Simple will guess the mime type based on the file it found, while Catalyst::View::TT defaults to text/html.

$res->cookies

Returns a reference to a hash containing cookies to be set. The keys of the hash are the cookies' names, and their corresponding values are hash references used to construct a CGI::Simple::Cookie object.

    $c->response->cookies->{foo} = { value => '123' };

The keys of the hash reference on the right correspond to the CGI::Simple::Cookie parameters of the same name, except they are used without a leading dash. Possible parameters are:

value
expires
domain
path
secure
httponly

$res->header

Shortcut for $res->headers->header.

$res->headers

Returns an HTTP::Headers object, which can be used to set headers.

    $c->response->headers->header( 'X-Catalyst' => $Catalyst::VERSION );

$res->output

Alias for $res->body.

$res->redirect( $url, $status )

Causes the response to redirect to the specified URL. The default status is 302.

    $c->response->redirect( 'http://slashdot.org' );
    $c->response->redirect( 'http://slashdot.org', 307 );

This is a convenience method that sets the Location header to the redirect destination, and then sets the response status. You will want to return or $c->detach() to interrupt the normal processing flow if you want the redirect to occur straight away.

Note: do not give a relative URL as $url, i.e: one that is not fully qualified (= http://..., etc.) or that starts with a slash (= /path/here). While it may work, it is not guaranteed to do the right thing and is not a standard behaviour. You may opt to use uri_for() or uri_for_action() instead.

$res->location

Sets or returns the HTTP 'Location'.

$res->status

Sets or returns the HTTP status.

    $c->response->status(404);

$res->code is an alias for this, to match HTTP::Response->code.

$res->write( $data )

Writes $data to the output stream.

$res->write_fh

Returns a PSGI $writer object that has two methods, write and close. You can close over this object for asynchronous and nonblocking applications. For example (assuming you are using a supporting server, like Twiggy

    package AsyncExample::Controller::Root;

    use Moose;

    BEGIN { extends 'Catalyst::Controller' }

    sub prepare_cb {
      my $write_fh = pop;
      return sub {
        my $message = shift;
        $write_fh->write("Finishing: $message\n");
        $write_fh->close;
      };
    }

    sub anyevent :Local :Args(0) {
      my ($self, $c) = @_;
      my $cb = $self->prepare_cb($c->res->write_fh);

      my $watcher;
      $watcher = AnyEvent->timer(
        after => 5,
        cb => sub {
          $cb->(scalar localtime);
          undef $watcher; # cancel circular-ref
        });
    }

$res->print( @data )

Prints @data to the output stream, separated by $,. This lets you pass the response object to functions that want to write to an IO::Handle.

$self->finalize_headers($c)

Writes headers to response if not already written

from_psgi_response

Given a PSGI response (either three element ARRAY reference OR coderef expecting a $responder) set the response from it.

Properly supports streaming and delayed response and / or async IO if running under an expected event loop.

Example:

    package MyApp::Web::Controller::Test;

    use base 'Catalyst::Controller';
    use Plack::App::Directory;


    my $app = Plack::App::Directory->new({ root => "/path/to/htdocs" })
      ->to_app;

    sub myaction :Local Args {
      my ($self, $c) = @_;
      $c->res->from_psgi_response($app->($self->env));
    }

Please note this does not attempt to map or nest your PSGI application under the Controller and Action namespace or path.

DEMOLISH

Ensures that the response is flushed and closed at the end of the request.

meta

Provided by Moose

AUTHORS ^

Catalyst Contributors, see Catalyst.pm

COPYRIGHT ^

This library is free software. You can redistribute it and/or modify it under the same terms as Perl itself.

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