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Allows namespaces to load constants on-demand

branch: master
README.md

OpenNamespace

Description

OpenNamespace allows namespaces to require and find classes and modules from RubyGems. Using OpenNamespace you can make a Plugins module able to load plugin modules/classes from other gems.

Features

  • Provides implicit loading of constants via const_defined?.
  • Provides implicit loading of constants via const_missing.
  • Provides explicit loading of constants via require_const.

Examples

Explicit and implicit loading of constants:

require 'open_namespace'

module Project
  module Plugins
    include OpenNamespace
  end
end

# explicitly load constants
Project::Plguins.require_const :foo_bar
# => Project::Plugins::FooBar

# explicitly load constants with odd capitalization
Project::Plugins.require_const :tcp_session
# => Project::Plugins::TCPSession

# explicitly load constants via sub-paths
Project::Plguins.require_const 'templates/erb'
# => Project::Plugins::Templates::Erb

# implicitly load constants via const_missing
Project::Plugins::Other
# => Project::Plugins::Other

Loading constants from alternate namespace root directories:

module Project
  module UI
    module CommandLine
      module Commands
        include OpenNamespace

        self.namespace_root = File.join('project','ui','command_line','commands')
      end
    end
  end
end

Project::UI::CommandLine::Commands.require_const :help
# => Project::UI::CommandLine::Commands::Help

Install

$ gem install open_namespace

License

Copyright (c) 2010-2012 Hal Brodigan

See {file:LICENSE.txt} for license information.

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