speed up some admin pages

generic/admin.py

@@ -32,11 +32,24 @@ admin.site.register(Contrast)
 admin.site.register(QuestionNote)
 admin.site.register(NoteType)
 admin.site.register(CidUser)
-admin.site.register(CidUserExam)
-admin.site.register(ExamUserStatus)
 admin.site.register(CidUserGroup)
 admin.site.register(UserProfile)
 admin.site.register(UserGrades)
 admin.site.register(Supervisor)
 admin.site.register(Modality)
-admin.site.register(ExamCollection)
+admin.site.register(ExamCollection)
+
+class CidUserExamAdmin(admin.ModelAdmin):
+    def get_queryset(self, request):
+        qs = super().get_queryset(request).prefetch_related('cid_user', 'user_user', 'exam')
+        return qs
+
+
+admin.site.register(CidUserExam, CidUserExamAdmin)
+
+class ExamUserStatusAdmin(admin.ModelAdmin):
+    def get_queryset(self, request):
+        qs = super().get_queryset(request).prefetch_related('cid_user_exam', 'exam')
+        return qs
+
+admin.site.register(ExamUserStatus, ExamUserStatusAdmin)