publications filtering

aircox/views/home.py

@@ -15,6 +15,7 @@ class HomeView(BaseView, ListView):
     attach_to_value = StaticPage.ATTACH_TO_HOME
     queryset = Diffusion.objects.on_air().select_related('episode')
     logs_count = 5
+    publications_count = 5
     has_filters = False
 
     def get_queryset(self):
@@ -37,8 +38,19 @@ class HomeView(BaseView, ListView):
         return diffs
 
     def get_last_publications(self):
-        return Page.objects.select_subclasses().published() \
-                   .order_by('-pub_date')
+        # note: with postgres db, possible to use distinct()
+        qs = Page.objects.select_subclasses().published() \
+                 .order_by('-pub_date')
+        parents = set()
+        items = []
+        for publication in qs:
+            parent_id = publication.parent_id
+            if parent_id is not None and parent_id in parents:
+                continue
+            items.append(publication)
+            if len(items) == self.publications_count:
+                break
+        return items
 
     def get_context_data(self, **kwargs):
         context = super().get_context_data(**kwargs)