module AbstractController::Helpers::ClassMethods

helpers provided.
* Array - A normalized list of modules for the list of
==== Returns

* args - An array of helpers
==== Parameters

are returned.
After loading the appropriate files, the corresponding modules

Module:: No further processing

and "foo_bar_helper.rb" is loaded using require_dependency.
String or Symbol:: :FooBar or "FooBar" becomes "foo_bar_helper",

helpers with the following behavior:
Returns a list of modules, normalized from the acceptable kinds of

def modules_for_helpers(args)
  args.flatten.map! do |arg|
    case arg
    when String, Symbol
      file_name = "#{arg.to_s.underscore}_helper"
      require_dependency(file_name, "Missing helper file helpers/%s.rb")
      file_name.camelize.constantize
    when Module
      arg
    else
      raise ArgumentError, "helper must be a String, Symbol, or Module"
    end
  end
end