Updated dashboard orders list view

Removing the display and querying of address values drastically improves query speed.

ECOM-2501

ecommerce/extensions/dashboard/orders/tests.py

@@ -10,6 +10,7 @@ from selenium.common.exceptions import NoSuchElementException
 from selenium.webdriver.firefox.webdriver import WebDriver
 from selenium.webdriver.support.wait import WebDriverWait
 
+from ecommerce.extensions.dashboard.orders.views import queryset_orders_for_user
 from ecommerce.extensions.dashboard.tests import DashboardViewTestMixin
 from ecommerce.extensions.fulfillment.signals import SHIPPING_EVENT_NAME
 from ecommerce.extensions.fulfillment.status import ORDER, LINE
@@ -153,6 +154,14 @@ class OrderListViewTests(OrderViewTestsMixin, RefundTestMixin, LiveServerTestCas
         ))
         self.assert_successful_response(response, [new_order])
 
+    def test_address_not_displayed(self):
+        """ Verify no address data is displayed when the view is rendered. """
+        self.client.login(username=self.user.username, password=self.password)
+
+        response = self.client.get(self.path)
+        self.assertEqual(response.status_code, 200)
+        self.assertNotIn('address', response.content)
+
 
 class OrderDetailViewTests(DashboardViewTestMixin, OrderViewTestsMixin, RefundTestMixin, TestCase):
     def _request_refund(self, order):
@@ -216,3 +225,11 @@ class OrderDetailViewTests(DashboardViewTestMixin, OrderViewTestsMixin, RefundTe
         self.assert_message_equals(response,
                                    'A refund cannot be created for these lines. They may have already been refunded.',
                                    MSG.ERROR)
+
+
+class HelperMethodTests(UserMixin, TestCase):
+    def test_queryset_orders_for_user_select_related(self):
+        """ Verify the method only selects the related user. """
+        user = self.create_user(is_staff=True)
+        queryset = queryset_orders_for_user(user)
+        self.assertDictEqual(queryset.query.select_related, {'user': {}})

ecommerce/extensions/dashboard/orders/views.py

@@ -7,11 +7,35 @@ from oscar.apps.dashboard.orders.views import (
 )
 from oscar.core.loading import get_model
 
-
+Order = get_model('order', 'Order')
+Partner = get_model('partner', 'Partner')
 Refund = get_model('refund', 'Refund')
 
 
+def queryset_orders_for_user(user):  # pylint: disable=unused-argument
+    """
+    Returns a queryset of all orders that a user is allowed to access.
+    A staff user may access all orders.
+    To allow access to an order for a non-staff user, at least one line's
+    partner has to have the user in the partner's list.
+
+    This customization removes the selection of the related address data, as it drastically decreases
+    query response time. Support for non-staff users is also removed.
+    """
+    return Order._default_manager.select_related('user').prefetch_related('lines')  # pylint: disable=protected-access
+
+
 class OrderListView(CoreOrderListView):
+    def dispatch(self, request, *args, **kwargs):
+        # NOTE: This method is overridden so that we can use our override of `queryset_orders_for_user`.
+
+        # pylint: disable=attribute-defined-outside-init
+        # base_queryset is equal to all orders the user is allowed to access
+        self.base_queryset = queryset_orders_for_user(request.user).order_by('-date_placed')
+
+        # Bypass the CoreOrderListView.dispatch()
+        return super(CoreOrderListView, self).dispatch(request, *args, **kwargs)  # pylint: disable=bad-super-call
+
     def get_queryset(self):
         queryset = super(OrderListView, self).get_queryset()
 

ecommerce/templates/oscar/dashboard/orders/order_list.html

@@ -119,8 +119,6 @@
                     <th>{% trans "Number of items" %}</th>
                     <th>{% trans "Status" %}</th>
                     <th>{% trans "Username" %}</th>
-                    <th>{% trans "Shipping address" %}</th>
-                    <th>{% trans "Billing address" %}</th>
                     <th>{% trans "Date of purchase" %}</th>
                     <th></th>
                 </tr>
@@ -142,8 +140,6 @@
                                 &lt;{% trans "Deleted" %}&gt;
                             {% endif %}
                         </td>
-                        <td>{{ order.shipping_address|default:"-" }}</td>
-                        <td>{{ order.billing_address|default:"-" }}</td>
                         <td>{{ order.date_placed }}</td>
                         <td>
                             <a class="btn btn-info"