module Roda::RodaPlugins::RequestAref

def self.configure(app, setting)

request_a(ref|set)_* methods to them.
Make #[] and #[]= methods work as configured by aliasing the appropriate 
def self.configure(app, setting)
  case setting
  when :allow, :raise, :warn
    app::RodaRequest.class_eval do
      alias_method(:[],  :"request_aref_#{setting}")
      alias_method(:[]=, :"request_aset_#{setting}")
      public :[], :[]=
    end
  else
    raise RodaError, "Unsupport request_aref plugin setting: #{setting.inspect}"
  end
end