Add 2Checkout language support

lib/offsite_payments/helper.rb

@@ -97,6 +97,10 @@ def lookup_country_code(name_or_code, format = country_format)
  name_or_code
  end
 
+ def language_from_locale(locale)
+ locale[0..1].downcase
+ end
+
  def method_missing(method_id, *args)
  method_id = method_id.to_s.gsub(/=$/, '').to_sym
  # Return and do nothing if the mapping was not found. This allows

lib/offsite_payments/integrations/two_checkout.rb

@@ -114,6 +114,10 @@ def third_party_cart(params = {})
  add_field("c_#{key}_#{line_item_id}", value)
  end
  end
+
+ def locale(locale)
+ add_field 'lang', language_from_locale(locale)
+ end
  end
 
  class Notification < OffsitePayments::Notification

test/unit/integrations/two_checkout/two_checkout_helper_test.rb

@@ -23,12 +23,14 @@ def test_extra_helper_fields
  @helper.return_url 'https://return.url/'
  @helper.cart_type 'shopify'
  @helper.purchase_step 'payment-method'
+ @helper.locale 'en-US'
 
  assert_field 'currency_code', 'ZAR'
  assert_field 'cart_order_id', '123'
  assert_field 'x_receipt_link_url', 'https://return.url/'
  assert_field '2co_cart_type', 'shopify'
  assert_field 'purchase_step', 'payment-method'
+ assert_field 'lang', 'en'
  end
 
  def test_customer_fields