MooseX::SimpleConfig - A Moose role for setting attributes from a simple configuration file

NAME

MooseX::SimpleConfig - A Moose role for setting attributes from a simple configuration file

VERSION

version 0.11

SYNOPSIS

  ## A YAML configfile named /etc/my_app.yaml:
  foo: bar
  baz: 123
  ## In your class
  package My::App;
  use Moose;
  with 'MooseX::SimpleConfig';
  has 'foo' => (is => 'ro', isa => 'Str', required => 1);
  has 'baz'  => (is => 'rw', isa => 'Int', required => 1);
  # ... rest of the class here
  ## in your script
  #!/usr/bin/perl
  use My::App;
  my $app = My::App->new_with_config(configfile => '/etc/my_app.yaml');
  # ... rest of the script here
  ####################
  ###### combined with MooseX::Getopt:
  ## In your class
  package My::App;
  use Moose;
  with 'MooseX::SimpleConfig';
  with 'MooseX::Getopt';
  has 'foo' => (is => 'ro', isa => 'Str', required => 1);
  has 'baz'  => (is => 'rw', isa => 'Int', required => 1);
  # ... rest of the class here
  ## in your script
  #!/usr/bin/perl
  use My::App;
  my $app = My::App->new_with_options();
  # ... rest of the script here
  ## on the command line
  % perl my_app_script.pl -configfile /etc/my_app.yaml -otherthing 123

DESCRIPTION

This role loads simple files to set object attributes. It is based on the abstract role the MooseX::ConfigFromFile manpage, and uses the Config::Any manpage to load your configuration file. the Config::Any manpage will in turn support any of a variety of different config formats, detected by the file extension. See the Config::Any manpage for more details about supported formats.

To pass additional arguments to the Config::Any manpage you must provide a config_any_args() method, for example:

  sub config_any_args {
    return {
      driver_args => { General => { '-InterPolateVars' => 1 } }
    };
  }

Like all the MooseX::ConfigFromFile manpage -derived file loaders, this module is automatically supported by the the MooseX::Getopt manpage role as well, which allows specifying -configfile on the command line.

ATTRIBUTES

configfile

Provided by the base role the MooseX::ConfigFromFile manpage. You can provide a default configuration file pathname like so:

  has '+configfile' => ( default => '/etc/myapp.yaml' );

You can pass an array of filenames if you want, but as usual the array has to be wrapped in a sub ref.

  has '+configfile' => ( default => sub { [ '/etc/myapp.yaml', '/etc/myapp_local.yml' ] } );

Config files are trivially merged at the top level, with the right-hand files taking precedence.

CLASS METHODS

new_with_config

Provided by the base role the MooseX::ConfigFromFile manpage. Acts just like regular new(), but also accepts an argument configfile to specify the file from which to load other attributes. Explicit arguments to new_with_config will override anything loaded from the file.

get_config_from_file

Called internally by either new_with_config or the MooseX::Getopt manpage's new_with_options. Invokes the Config::Any manpage to parse configfile.

AUTHOR

Brandon L. Black <blblack@gmail.com>

COPYRIGHT AND LICENSE

This software is copyright (c) 2007 by Brandon L. Black <blblack@gmail.com>.

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

CONTRIBUTORS

 MooseX::SimpleConfig - A Moose role for setting attributes from a simple configuration file