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Source Code

# File action_controller/helpers.rb, line 6
def self.included(base)
  # Initialize the base module to aggregate its helpers.
  base.class_inheritable_accessor :master_helper_module
  base.master_helper_module = Module.new

  # Extend base with class methods to declare helpers.
  base.extend(ClassMethods)

  base.class_eval do
    # Wrap inherited to create a new master helper module for subclasses.
    class << self
      alias_method_chain :inherited, :helper
    end
  end
end