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module Rails
class Railtie
autoload :Configurable, "rails/railtie/configurable"
include Initializable
ABSTRACT_RAILTIES = %w(Rails::Plugin Rails::Engine Rails::Application)
class << self
def subclasses
@subclasses ||= []
end
def inherited(base)
unless abstract_railtie?(base)
base.send(:include, self::Configurable) if add_configurable?(base)
subclasses << base
end
end
# TODO This should be called railtie_name and engine_name
def plugin_name(plugin_name = nil)
@plugin_name ||= name.demodulize.underscore
@plugin_name = plugin_name if plugin_name
@plugin_name
end
# TODO Deprecate me
def plugins
subclasses
end
# TODO Deprecate me
def plugin_names
plugins.map { |p| p.plugin_name }
end
def subscriber(subscriber)
Rails::Subscriber.add(plugin_name, subscriber)
end
def rake_tasks(&blk)
@rake_tasks ||= []
@rake_tasks << blk if blk
@rake_tasks
end
def generators(&blk)
@generators ||= []
@generators << blk if blk
@generators
end
protected
def abstract_railtie?(base)
ABSTRACT_RAILTIES.include?(base.name)
end
# Just add configurable behavior if a Configurable module is defined
# and the class is a direct child from self. This is required to avoid
# application or plugins getting class configuration method from Railties
# and/or Engines.
def add_configurable?(base)
defined?(self::Configurable) && base.ancestors[1] == self
end
end
def rake_tasks
self.class.rake_tasks
end
def generators
self.class.generators
end
def load_tasks
rake_tasks.each { |blk| blk.call }
end
def load_generators
generators.each { |blk| blk.call }
end
end
end
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