def urlize_parameters(obj, prefix = '')
   case obj
    when Hash: obj.map { |k,v| urlize_parameters(v, prefix.blank? ? k : "#{prefix}[#{k}]")}.join('&')
    when Array: obj.map { |v| urlize_parameters(v, "#{prefix}[]")}.join('&')
    else "#{prefix}=#{obj}"
  end
end