Morpher ruby склонение по падежам

morpher.rb

require 'savon'

class Morpher

  def initialize(phrase)
    client = Savon.client do |globals|
      globals.wsdl 'http://morpher.ru/WebService.asmx?WSDL'
      globals.soap_version 2
      globals.soap_header header
    end

    response = client.call(:get_xml,
      message: {
        s: phrase
      },
      attributes: {
        xmlns: 'http://morpher.ru/'
      }
    )
    @data = response.to_array(:get_xml_response, :get_xml_result).first
  end

  def singular(padeg)
    @data[padeg.to_sym]
  end

  def plural(padeg)
    @data[:множественное][padeg.to_sym]
  end

  private

  def header
    {
      'Credentials' => {
        'Username' => 'test',
        'Password' => 'test'
      },
      :attributes! => {
        'Credentials' => {
          :xmlns => 'http://morpher.ru/'
        }
      }
    }
  end
end