class Hash def recursively_symbolize_keys! self.symbolize_keys! self.values.each do |v| if v.is_a? Hash v.recursively_symbolize_keys! elsif v.is_a? Array v.recursively_symbolize_keys! end end self end end class Array def recursively_symbolize_keys! self.each do |item| if item.is_a? Hash item.recursively_symbolize_keys! elsif item.is_a? Array item.recursively_symbolize_keys! end end end end