NAME

Moose::Cookbook::Meta::Recipe4 - Adding a "table" attribute to the metaclass

SYNOPSIS

  package MyApp::Meta::Class;
  use Moose;
  extends 'Moose::Meta::Class';

  has table =>
      ( is       => 'rw',
        isa      => 'Str',
      );

DESCRIPTION

In this recipe, we'll create a new metaclass which has a "table" attribute. This metaclass is for classes associated with a DBMS table, as one might do for an ORM.

In this example, the table name is just a string, but in a real ORM the table might be an object describing the table.

THE METACLASS

The metaclass example really is as simple as the one in the synopsis. The trick is getting your classes to use this metaclass, and providing some sort of sugar for declaring the table. This is covered in Moose::Cookbook::Extending::Recipe2, which shows how to make a module like Moose.pm itself, with sugar like has_table().

Using this Metaclass in Practice

Using this new "table" attribute is quite simple. Let's say we have a class named MyApp::User, we could simply write the following:

  my $table = MyApp::User->meta()->table();

As long as MyApp::User has arranged to use MyApp::Meta::Class as its metaclass, this method call just works.

SEE ALSO

Moose::Cookbook::Meta::Recipe5 - The "table" attribute implemented as a metaclass trait

Moose::Cookbook::Extending::Recipe2 - Acting like Moose.pm and providing sugar Moose-style

AUTHOR

Dave Rolsky <autarch@urth.org>

COPYRIGHT AND LICENSE

Copyright 2006-2008 by Infinity Interactive, Inc.

http://www.iinteractive.com

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