3N + 1 query optimization | 3N - viewers, commenters, owner | after s…

…ubmitting the task

.env.local

@@ -0,0 +1,6 @@
+DEBUG=1
+CELERY_BROKER_URL=redis://localhost:6379/0
+CELERY_RESULT_BACKEND=redis://localhost:6379/0
+DATABASE_URL=postgres://kenan:kkk@localhost:5433/fileshare
+REDIS_CHANNEL_HOST=localhost
+REDIS_CHANNEL_PORT=6379

.vscode/launch.json

@@ -4,9 +4,20 @@
     // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
-
         {
-            "name": "Python: Django",
+            "name": "Local - Python: Django",
+            "type": "python",
+            "request": "launch",
+            "program": "${workspaceFolder}/manage.py",
+            "args": [
+                "runserver"
+            ],
+            "django": true,
+            "envFile": "${workspaceFolder}/.env.local",
+            "justMyCode": false
+        },
+        {
+            "name": "Staging - Python: Django",
             "type": "python",
             "request": "launch",
             "program": "${workspaceFolder}/manage.py",

labrin_task/fileapp/views.py

@@ -104,7 +104,11 @@ class FileListView(LoginRequiredMixin, ListView):
 
     def get_queryset(self):
         current_user = User.objects.get(id=self.request.user.id)
-        return FileModel.objects.filter(owner=current_user)
+        return (
+            FileModel.objects.filter(owner=current_user)
+            .select_related("owner")
+            .prefetch_related("viewers", "commenters")
+        )
 
 
 file_list_view = FileListView.as_view()