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module AbstractController
module Helpers
def self.included(klass)
klass.class_eval do
extend ClassMethods
unless self < ::AbstractController::Renderer
raise "You need to include AbstractController::Renderer before including " \
"AbstractController::Helpers"
end
extlib_inheritable_accessor :master_helper_module
self.master_helper_module = Module.new
end
end
def _action_view
@_action_view ||= begin
av = super
av.helpers.send(:include, master_helper_module)
av
end
end
module ClassMethods
def inherited(klass)
klass.master_helper_module = Module.new
klass.master_helper_module.__send__ :include, master_helper_module
super
end
def add_template_helper(mod)
master_helper_module.module_eval { include mod }
end
def helper_method(*meths)
meths.flatten.each do |meth|
master_helper_module.class_eval <<-ruby_eval, __FILE__, __LINE__ + 1
def #{meth}(*args, &blk)
controller.send(%(#{meth}), *args, &blk)
end
ruby_eval
end
end
def helper(*args, &blk)
args.flatten.each do |arg|
case arg
when Module
add_template_helper(arg)
end
end
master_helper_module.module_eval(&blk) if block_given?
end
end
end
end
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