endpoint with prefetch added

boards/urls.py

@@ -3,6 +3,7 @@
 
 urlpatterns = [
     path('', views.all),
+    path('prefetch', views.all_prefetch),
     path('first', views.first),
     path('last', views.last),
 ]

boards/views.py

@@ -1,10 +1,12 @@
 from django.http import JsonResponse
 from boards.models import Board
+from django.db.models import Prefetch
 
 def all(request):
   response = {}
+  boards = Board.objects.all()
 
-  for board in list(Board.objects.all()):
+  for board in list(boards):
     response[board.id] = {
       "id": board.id,
       "name": board.name,
@@ -18,6 +20,25 @@ def all(request):
 
   return JsonResponse(response)
 
+def all_prefetch(request):
+  response = {}
+  # Look at this "prefetch_related" stuff, that's all!
+  boards = Board.objects.prefetch_related(Prefetch('reports', to_attr='reports_list'))
+
+  for board in list(boards):
+    response[board.id] = {
+      "id": board.id,
+      "name": board.name,
+      "reports": [],
+    }
+    for report in board.reports_list:
+      response[board.id]["reports"].append({
+        "id": report.id,
+        "name": report.name
+      })
+
+  return JsonResponse(response)
+
 def first(request):
   board = Board.objects.first()
   response = {

myproject/settings.py

@@ -31,6 +31,7 @@
 # Application definition
 
 INSTALLED_APPS = [
+    'django_extensions',
     'boards',
     'django.contrib.admin',
     'django.contrib.auth',