NAME

Poet::Mason -- Mason settings and enhancements for Poet

SYNOPSIS

# In a conf file...
mason:
  plugins:
    - Cache
    - TidyObjectFiles
    - +My::Mason::Plugin
  static_source: 1
  static_source_touch_file: ${root}/data/purge.dat

# Get the main Mason instance
my $mason = Poet::Mason->instance();

# Create a new Mason object
my $mason = Poet::Mason->new(...);

DESCRIPTION

This is a Poet-specific Mason subclass. It sets up sane default settings, maintains a main Mason instance for handling web requests, and adds Poet-specific methods to $m (the Mason request object).

CLASS METHODS

get_options

Returns a hash of Mason options by combining default settings and configuration.

instance

Returns the main Mason instance used for web requests, which is created with options from get_options.

new

Returns a new main Mason object, using options from get_options. Unless you specifically need a new object, you probably want to call instance.

DEFAULT SETTINGS

• comp_root is set to $poet->comps_dir, by default the comps subdirectory under the environment root.

• data_dir is set to $poet->data_dir, by default the data subdirectory under the environment root.

• plugins is set to include Cache, HTMLFilters and RouterSimple.

• cache_root_class (a parameter of the Cache plugin) is set to MyApp::Cache if it exists (replacing MyApp with your app name), otherwise Poet::Cache.

CONFIGURATION

The Poet configuration entry 'mason', if any, will be treated as a hash of options that supplements and/or overrides the defaults above. If the hash contains 'extra_plugins', these will be added to the default plugins. e.g.

mason:
  static_source: 1
  static_source_touch_file: ${root}/data/purge.dat
  extra_plugins:
     - AnotherFavoritePlugin

QUICK VARS AND UTILITIES

Poet inserts the following line at the top of of every compiled Mason component:

use Poet qw($conf $poet :web);

which means that $conf, $poet, and web utilities are available from every component.

NEW REQUEST METHODS

Under Poet these additional web-related methods are available in the Mason request object, accessible in components via $m or elsewhere via Mason::Request->current_request.

req ()

A reference to the Plack::Request object. e.g.

my $user_agent = $m->req->headers->header('User-Agent');

res ()

A reference to the Plack::Response object. e.g.

$m->res->content_type('text/plain');

abort (status)

clear_and_abort (status)

These methods are overridden to set the response status before aborting, if status is provided. e.g. to send back a FORBIDDEN result:

$m->clear_and_abort(403);

This is equivalent to

$m->res->status(403);
$m->clear_and_abort();

If a status is not provided, the methods work just as before.

redirect (url[, status])

Sets headers and status for redirect, then clears the Mason buffer and aborts the request. e.g.

$m->redirect("http://somesite.com", 302);

is equivalent to

$m->res->redirect("http://somesite.com", 302);
$m->clear_and_abort();

not_found ()

Sets the status to 404, then clears the Mason buffer and aborts the request. e.g.

$m->not_found();

is equivalent to

$m->clear_and_abort(404);

session

A shortcut for $m->req->session, the Plack session. This is simply a persistent hash that you can read from and write to. It is tied to the user's browser session via cookies and stored in a file cache in the data directory (by default).

my $value = $m->session->{key};
$m->session->{key} = { some_complex => ['value'] };

send_json ($data)

Output the JSON-encoded $data, set the content type to "application/json", and abort. e.g.

method handle {
    my $data;
    # compute data somehow
    $m->send_json($data);
}

send_json is a shortcut for

$m->clear_buffer;
$m->print(JSON::XS::encode_json($data));
$m->res->content_type("application/json");
$m->abort();

SEE ALSO

Poet

AUTHOR

Jonathan Swartz <swartz@pobox.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2012 by Jonathan Swartz.

This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself.