Attribute error in Receipt Response View

LEARNER-5157

ecommerce/extensions/checkout/tests/test_views.py

@@ -18,6 +18,7 @@ from ecommerce.extensions.refund.tests.mixins import RefundTestMixin
 from ecommerce.tests.mixins import LmsApiMockMixin
 from ecommerce.tests.testcases import TestCase
 
+Basket = get_model('basket', 'Basket')
 BasketAttribute = get_model('basket', 'BasketAttribute')
 BasketAttributeType = get_model('basket', 'BasketAttributeType')
 Order = get_model('order', 'Order')
@@ -372,3 +373,10 @@ class ReceiptResponseViewTests(DiscoveryMockMixin, LmsApiMockMixin, RefundTestMi
 
         self.assertEqual(response.status_code, 200)
         self.assertDictContainsSubset(context_data, response.context_data)
+
+    @httpretty.activate
+    def test_order_without_basket(self):
+        order = self.create_order()
+        Basket.objects.filter(id=order.basket.id).delete()
+        response = self._get_receipt_response(order.number)
+        self.assertEqual(response.status_code, 200)

ecommerce/extensions/checkout/views.py

@@ -182,9 +182,12 @@ class ReceiptResponseView(ThankYouView):
     def get_context_data(self, **kwargs):
         context = super(ReceiptResponseView, self).get_context_data(**kwargs)
         order = context[self.context_object_name]
-        has_enrollment_code_product = any(
-            line.product.is_enrollment_code_product for line in order.basket.all_lines()
-        )
+        has_enrollment_code_product = False
+        if order.basket:
+            has_enrollment_code_product = any(
+                line.product.is_enrollment_code_product for line in order.basket.all_lines()
+            )
+
         context.update({
             'payment_method': self.get_payment_method(order),
             'display_credit_messaging': self.order_contains_credit_seat(order),