NAME
    Plack::Response::Data - Response Content Body Encoder for JSON, XML,
    YAML, etc.

SYNOPSIS
        use Plack::Response::Data;

        sub psgi_handler {
            my $env  = shift;
            my $req  = Plack::Request->new($env);
    
            my $data = { key => 'value', array => [1, 2, 3] };
            my $res  = Plack::Response::Data->new(200)->format('JSON')->data($data);
            return $res->finalize;
        }

DESCRIPTION
    This uses Plack::Response's response content body as a data container to
    respond a data encoded in JSON, XML, YAML format, etc. This would help
    you to build an Web API server application in a short code.

METHODS
    This is a subclass of "Plack::Response" class. This provides the
    following additional methods as well as other methods inherited since
    "Plack::Response".

  format
    This specifies a data container format. Any formats found at
    "Plack::Response::Data::*" modules are supported.

        $res->format('JSON');       # uses Plack::Response::Data::JSON
        $res->format('XML');        # uses Plack::Response::Data::XML
        $res->format('YAML');       # uses Plack::Response::Data::YAML

    Without arguments given, this returns the current format.

        $format = $res->format;     # returns 'JSON' etc.

  data
    This writes a data object into response content body.

        $data = {key => 'val'};     # a hashref
        $res->data($data);
        $body = $res->body;         # returns a JSON encoded string: '{"key":"val"}'

    Without arguments given, this parses the current resopnse content body
    as a data object vice versa.

        $body = '{"key":"val"}';    # a JSON encoded string
        $res->body($body);
        $data = $res->data;         # returns a hashref decoded: {key => 'val'}

AUTHOR
    Yusuke Kawasaki

SEE ALSO
    Plack::Response

    Plack::Response::Data::JSON

    Plack::Response::Data::XML

    Plack::Response::Data::YAML