Method: CurrencyLayer::Client#change

Defined in:

lib/currency_conversion.rb

#change(start_date, end_date, currencies, options = {}) ⇒ Object

# File 'lib/currency_conversion.rb', line 269

def change(start_date, end_date, currencies, options = {})

  if start_date.nil?
    raise CurrencyLayer::MissingArgumentException.new 'start_date'
    return
  end

  if end_date.nil?
    raise CurrencyLayer::MissingArgumentException.new 'end_date'
    return
  end

  if currencies.nil?
    raise CurrencyLayer::MissingArgumentException.new 'currencies'
    return
  end

  # Create a shallow copy so we don't manipulate the original reference
  q = options.dup

  # Populate the Query
  q.access_key = @access_key
  q.start_date = start_date
  q.end_date = end_date
  q.currencies = currencies

  # We then create the Request
  req = CurrencyLayer::ChangeRequest.new(q)

  #  We create a Hash of the request so we can send it via HTTP
  req_dto = req.to_dh

  begin

    # We make the actual request
    res = self.class.get('/change', req_dto)

    # We ensure that we tap the response so we can use the results
    res.inspect

    if (res[CurrencyLayer::ChangeResponse::ERROR_EXPR])
      raise CurrencyLayer::ChangeException.new res[CurrencyLayer::ChangeResponse::ERROR_EXPR]
    end

    # We just return the parsed binary response
    return res.parsed_response

  rescue => e
    puts e.inspect
    return e

  end
end