view release on metacpan or  search on metacpan

lib/Config/Model/Manual/ModelCreationAdvanced.pod  view on Meta::CPAN

     # etc ...
   ]
  }

=head1 References

=head1 Computation and migrations

=head2 Cascaded warp

Config::Model also supports cascaded warps: A warped value is
dependent on another value which is itself a warped value.

=head1 Feedback welcome

Feel free to send comments and suggestion about this page at

 config-model-users at lists dot sourceforge dot net.

=head1 AUTHORS

lib/Config/Model/Value.pm  view on Meta::CPAN

             },
             '$c eq "Japan"' => {
                  choice => ['Honshu', 'Hokkaido' ]
             }
         }
     }
 }

=head2 Cascaded warping

Warping value can be cascaded: C<A> can be warped by C<B> which can be
warped by C<C>. But this feature should be avoided since it can lead
to a model very hard to debug. Bear in mind that:

=over

=item *

Warp loops are not detected and end up in "deep recursion
subroutine" failures.

lib/Config/Model/Value/LayeredInclude.pm  view on Meta::CPAN

    # in a model declaration:
    'element' => [
      'include' => {
        'class' => 'Config::Model::Value::LayeredInclude',

        # usual Config::Model::Value parameters
        'type' => 'leaf',
        'value_type' => 'uniline',
        'convert' => 'lc',
        'summary' => 'Include file for cascaded configuration',
        'description' => 'To support multiple variants of ...'
      },
    ]

=head1 DESCRIPTION

This class inherits from L<Config::Model::Value>. It overrides
L<_store> to trigger a refresh of layered value when a value is
changed. I.e. changing this value trigger a reload of the referred
configuration file which values are used as default value. This class