Get the projects in a more efficient manner

opentech/public/projects/models.py

@@ -156,7 +156,7 @@ class ProjectIndexPage(BasePage):
 
     def get_context(self, request, *args, **kwargs):
         context = super().get_context(request, *args, **kwargs)
-        subpages = self.get_children().live()
+        subpages = ProjectPage.objects.descendant_of(self).live().public().select_related('icon')
         per_page = settings.DEFAULT_PER_PAGE
         page_number = request.GET.get('page')
         paginator = Paginator(subpages, per_page)

opentech/public/utils/templates/utils/listing_index.html

@@ -10,7 +10,7 @@
     <div class="wrapper wrapper--listings">
 
         {% if subpages.object_list.exists %}
-            {% for subpage in subpages.object_list.specific %}
+            {% for subpage in subpages.object_list %}
 
                 <a class="listing" href="{% pageurl subpage %}">
                     {% if subpage.icon %}