class ExchangerYahoo1

Public Class Methods

new() click to toggle source

default constructor

Calls superclass method ExchangerBase::new
# File lib/mrpin/core/currency_exchanger/yahoo/exchanger_yahoo1.rb, line 6
def initialize
  super

  @exchanger_api = ManagerRemoteHttp.new(url: 'http://query.yahooapis.com')
end

Public Instance Methods

get_rate(from_currency, to_currency) click to toggle source
# File lib/mrpin/core/currency_exchanger/yahoo/exchanger_yahoo1.rb, line 14
def get_rate(from_currency, to_currency)
  params =
      {
          q:        "select * from yahoo.finance.xchange where pair in ('#{from_currency}#{to_currency}')",
          format:   'json',
          env:      'store://datatables.org/alltableswithkeys',
          callback: nil
      }

  response = @exchanger_api.get('v1/public/yql', params)

  assert(response[:status] == EResponseType::ERT_OK, response)

  response_exchanger = JSON.parse response[:response], {symbolize_names: true}

  rate_string = response_exchanger.assert_property!(:query).assert_property!(:results).assert_property!(:rate).assert_property!(:Rate)

  rate_string.to_f
end