Clean up more sql queries

judge/jinja2/reference.py

@@ -160,6 +160,8 @@ def link_user(user, show_image=False):
         profile = user
     elif isinstance(user, AbstractUser):
         profile = user.profile
+    elif isinstance(user, int):
+        profile = Profile(id=user)
     else:
         raise ValueError("Expected profile or user, got %s" % (type(user),))
     return {"profile": profile, "show_image": show_image}

judge/models/comment.py

@@ -73,12 +73,7 @@ class Comment(MPTTModel):
 
     @classmethod
     def most_recent(cls, user, n, batch=None, organization=None):
-        queryset = (
-            cls.objects.filter(hidden=False)
-            .select_related("author__user")
-            .defer("author__about")
-            .order_by("-id")
-        )
+        queryset = cls.objects.filter(hidden=False).order_by("-id")
 
         if organization:
             queryset = queryset.filter(author__in=organization.members.all())

judge/models/profile.py

@@ -547,15 +547,6 @@ def on_user_save(sender, instance, **kwargs):
         pass
 
 
-@receiver([pre_save], sender=Profile)
-def on_profile_save(sender, instance, **kwargs):
-    if instance.id is None:
-        return
-    prev = sender.objects.get(id=instance.id)
-    if prev.mute != instance.mute or prev.profile_image != instance.profile_image:
-        _get_basic_info.dirty(instance.id)
-
-
 @cache_wrapper(prefix="Pgbi3")
 def _get_basic_info(profile_id):
     profile = (

judge/models/runtime.py

@@ -11,6 +11,7 @@ from django.utils.functional import cached_property
 from django.utils.translation import gettext_lazy as _
 
 from judge.judgeapi import disconnect_judge
+from judge.caching import cache_wrapper
 
 __all__ = ["Language", "RuntimeVersion", "Judge"]
 
@@ -147,14 +148,11 @@ class Language(models.Model):
 
     @classmethod
     def get_default_language(cls):
-        try:
-            return Language.objects.get(key=settings.DEFAULT_USER_LANGUAGE)
-        except Language.DoesNotExist:
-            return cls.get_python3()
+        return _get_default_language()
 
     @classmethod
     def get_default_language_pk(cls):
-        return cls.get_default_language().pk
+        return _get_default_language().pk
 
     class Meta:
         ordering = ["key"]
@@ -162,6 +160,14 @@ class Language(models.Model):
         verbose_name_plural = _("languages")
 
 
+@cache_wrapper(prefix="gdl")
+def _get_default_language():
+    try:
+        return Language.objects.get(key=settings.DEFAULT_USER_LANGUAGE)
+    except Language.DoesNotExist:
+        return cls.get_python3()
+
+
 class RuntimeVersion(models.Model):
     language = models.ForeignKey(
         Language,

judge/models/submission.py

@@ -220,7 +220,7 @@ class Submission(models.Model):
     def id_secret(self):
         return self.get_id_secret(self.id)
 
-    def is_accessible_by(self, profile):
+    def is_accessible_by(self, profile, check_contest=True):
         if not profile:
             return False
 
@@ -239,9 +239,10 @@ class Submission(models.Model):
         if self.problem.is_public and user.has_perm("judge.view_public_submission"):
             return True
 
-        contest = self.contest_object
-        if contest and contest.is_editable_by(user):
-            return True
+        if check_contest:
+            contest = self.contest_object
+            if contest and contest.is_editable_by(user):
+                return True
 
         from judge.utils.problems import (
             user_completed_ids,

judge/signals.py

@@ -82,6 +82,8 @@ def profile_update(sender, instance, **kwargs):
         ]
     )
 
+    judge.models.profile._get_basic_info.dirty(instance.id)
+
 
 @receiver(post_save, sender=Contest)
 def contest_update(sender, instance, **kwargs):

judge/views/blog.py

@@ -130,7 +130,6 @@ class TicketFeed(HomeFeedView):
                     )
                     .order_by("-id")
                     .prefetch_related("linked_item")
-                    .select_related("user__user")
                 )
             else:
                 return []
@@ -141,7 +140,6 @@ class TicketFeed(HomeFeedView):
                     Ticket.objects.order_by("-id")
                     .filter(is_open=True)
                     .prefetch_related("linked_item")
-                    .select_related("user__user")
                 )
                 return filter_visible_tickets(tickets, self.request.user, profile)
             else:
@@ -157,7 +155,7 @@ class TicketFeed(HomeFeedView):
 class CommentFeed(HomeFeedView):
     model = Comment
     context_object_name = "comments"
-    paginate_by = 15
+    paginate_by = 10
     feed_content_template_name = "comments/feed.html"
 
     def get_queryset(self):

judge/views/comment.py

@@ -438,22 +438,13 @@ class CommentedDetailView(TemplateResponseMixin, SingleObjectMixin, View):
     def _get_queryset(self, target_comment):
         if target_comment:
             queryset = target_comment.get_descendants(include_self=True)
-            queryset = (
-                queryset.select_related("author__user")
-                .filter(hidden=False)
-                .defer("author__about")
-            )
+            queryset = queryset.filter(hidden=False)
         else:
             queryset = self.object.comments
             queryset = queryset.filter(parent=None, hidden=False)
-            queryset = (
-                queryset.select_related("author__user")
-                .defer("author__about")
-                .filter(hidden=False)
-                .annotate(
-                    count_replies=Count("replies", distinct=True),
-                )[:DEFAULT_OFFSET]
-            )
+            queryset = queryset.filter(hidden=False).annotate(
+                count_replies=Count("replies", distinct=True),
+            )[:DEFAULT_OFFSET]
 
         if self.request.user.is_authenticated:
             profile = self.request.profile

judge/views/submission.py

@@ -469,6 +469,9 @@ class SubmissionsListBase(DiggPaginatorMixin, TitleMixin, ListView):
         if context["in_hidden_subtasks_contest"]:
             for submission in context["submissions"]:
                 self.modify_attrs(submission)
+        context[
+            "is_in_editable_contest"
+        ] = self.in_contest and self.contest.is_editable_by(self.request.user)
 
         return context
 
@@ -721,6 +724,11 @@ def single_submission(request, submission_id, show_problem=True):
         submission_related(Submission.objects.all()), id=int(submission_id)
     )
 
+    is_in_editable_contest = False
+    if authenticated and request.in_contest_mode:
+        contest = request.profile.current_contest.contest
+        is_in_editable_contest = contest.is_editable_by(request.user)
+
     if not submission.problem.is_accessible_by(request.user):
         raise Http404()
 
@@ -733,6 +741,7 @@ def single_submission(request, submission_id, show_problem=True):
             "problem_name": show_problem
             and submission.problem.translated_name(request.LANGUAGE_CODE),
             "profile": request.profile if authenticated else None,
+            "is_in_editable_contest": is_in_editable_contest,
         },
     )