NAME

    Catalyst::View::RRDGraph - RRD Graph View Class

SYNOPSIS

    use the helper to create your View myapp_create.pl view RRDGraph
    RRDGraph

    from the controller:

      sub routine :Local {
        my ($self, $c) = @_;
    
        $c->stash->{'graph'} = [
                "--lower-limit", "0",
                "--start", "end-1d",
                "--vertical-label", "My Label",
                "--height", 600,
                "--width", 300,
                "DEF:Data=/path/to/rrd.rrd:data:AVERAGE",
                "AREA:Data#0000FF:Data "
        ];
        $c->forward('MyApp::View::RRDGraph');
      }

DESCRIPTION

    This view generates RRD graph images from the graph defintion placed in
    the stash. The controller is responsable of placing an ARRAYREF in
    $c-stash->{'graph'}> with the same data as to generate a graph with the
    RRDs module, except for filename, that will be automatically generated
    by the view.

    It doesn't depend on RRDs, but does need it to work (and for the tests
    to pass). You can install RRDs, for instance, using Alien::RRDtool, or
    compiling it manually from http://oss.oetiker.ch/rrdtool/

CONFIGURATION

    Configurations for the view are:

 IMG_DIR

    Directory to generate temporary image files. Defaults to /tmp/

 IMG_FORMAT

    Image format for the generated files. 'PNG' by default.

 ON_ERROR_SERVE

    On error, if this config value is set, the file to which it points will
    be served (so you can serve an "error image" file to the user).
    Alternately, it can be set to a code reference, that will called with
    $self, $c and $error. You can then generate your own content in this
    handler. Default (leaving undefined) is to throw an expception.

    See http://oss.oetiker.ch/rrdtool/doc/rrdgraph.en.html for more info.

METHODS

 new

    Constructor.

 process

    Called internally by Catalyst when the view is used.

AUTHOR

        Jose Luis Martinez
        CPAN ID: JLMARTIN
        CAPSiDE
        jlmartinez@capside.com
        L<http://www.pplusdomain.net>

THANKS

    To Ton Voon for sending in patches, tests, and ideas.

    Alexander Kabenin

COPYRIGHT

    This program is free software; you can redistribute it and/or modify it
    under the same terms as Perl itself.

    The full text of the license can be found in the LICENSE file included
    with this module.

SEE ALSO

    RRDs: http://oss.oetiker.ch/rrdtool/prog/RRDs.en.html

    RRD graph docs: http://oss.oetiker.ch/rrdtool/doc/rrdgraph.en.html,
    http://oss.oetiker.ch/rrdtool/doc/rrdgraph_data.en.html,
    http://oss.oetiker.ch/rrdtool/doc/rrdgraph_graph.en.html