Merge pull request #1167 from ae-utbm/page-n+1

Page n+1

core/models.py

@@ -560,7 +560,7 @@ class User(AbstractUser):
         """Determine if the object is owned by the user."""
         if hasattr(obj, "is_owned_by") and obj.is_owned_by(self):
             return True
-        if hasattr(obj, "owner_group") and self.is_in_group(pk=obj.owner_group.id):
+        if hasattr(obj, "owner_group") and self.is_in_group(pk=obj.owner_group_id):
             return True
         return self.is_root
 
@@ -569,8 +569,14 @@ class User(AbstractUser):
         if hasattr(obj, "can_be_edited_by") and obj.can_be_edited_by(self):
             return True
         if hasattr(obj, "edit_groups"):
-            for pk in obj.edit_groups.values_list("pk", flat=True):
+            if (
-                if self.is_in_group(pk=pk):
+                hasattr(obj, "_prefetched_objects_cache")
+                and "edit_groups" in obj._prefetched_objects_cache
+            ):
+                pks = [g.id for g in obj.edit_groups.all()]
+            else:
+                pks = list(obj.edit_groups.values_list("id", flat=True))
+            if any(self.is_in_group(pk=pk) for pk in pks):
                 return True
         if isinstance(obj, User) and obj == self:
             return True
@@ -581,8 +587,17 @@ class User(AbstractUser):
         if hasattr(obj, "can_be_viewed_by") and obj.can_be_viewed_by(self):
             return True
         if hasattr(obj, "view_groups"):
-            for pk in obj.view_groups.values_list("pk", flat=True):
+            # if "view_groups" has already been prefetched, use
-                if self.is_in_group(pk=pk):
+            # the prefetch cache, else fetch only the ids, to make
+            # the query lighter.
+            if (
+                hasattr(obj, "_prefetched_objects_cache")
+                and "view_groups" in obj._prefetched_objects_cache
+            ):
+                pks = [g.id for g in obj.view_groups.all()]
+            else:
+                pks = list(obj.view_groups.values_list("id", flat=True))
+            if any(self.is_in_group(pk=pk) for pk in pks):
                 return True
         return self.can_edit(obj)
 
@@ -1384,9 +1399,9 @@ class Page(models.Model):
 
     @cached_property
     def is_club_page(self):
-        club_root_page = Page.objects.filter(name=settings.SITH_CLUB_ROOT_PAGE).first()
+        return (
-        return club_root_page is not None and (
+            self.name == settings.SITH_CLUB_ROOT_PAGE
-            self == club_root_page or club_root_page in self.get_parent_list()
+            or settings.SITH_CLUB_ROOT_PAGE in [p.name for p in self.get_parent_list()]
         )
 
     @cached_property

core/templates/core/page_list.jinja

@@ -5,16 +5,12 @@
 {% endblock %}
 
 {% block content %}
-  {% if page_list %}
   <h3>{% trans %}Page list{% endtrans %}</h3>
   <ul>
     {% for p in page_list %}
-        <li><a href="{{ p.get_absolute_url() }}">{{ p.get_display_name() }}</a></li>
+      <li><a href="{{ p.get_absolute_url() }}">{{ p.display_name }}</a></li>
     {% endfor %}
   </ul>
-  {% else %}
-    {% trans %}There is no page in this website.{% endtrans %}
-  {% endif %}
 {% endblock %}
 
 

core/views/page.py

@@ -12,7 +12,10 @@
 # OR WITHIN THE LOCAL FILE "LICENSE"
 #
 #
+
 from django.contrib.auth.mixins import PermissionRequiredMixin
+from django.db.models import F, OuterRef, Subquery
+from django.db.models.functions import Coalesce
 
 # This file contains all the views that concern the page model
 from django.forms.models import modelform_factory
@@ -43,6 +46,20 @@ class CanEditPagePropMixin(CanEditPropMixin):
 class PageListView(CanViewMixin, ListView):
     model = Page
     template_name = "core/page_list.jinja"
+    queryset = (
+        Page.objects.annotate(
+            display_name=Coalesce(
+                Subquery(
+                    PageRev.objects.filter(page=OuterRef("id"))
+                    .order_by("-date")
+                    .values("title")[:1]
+                ),
+                F("name"),
+            )
+        )
+        .prefetch_related("view_groups")
+        .select_related("parent")
+    )
 
 
 class PageView(CanViewMixin, DetailView):