Prevent some errors

participation/models.py

@@ -1628,7 +1628,7 @@ class Pool(models.Model):
 
     def update_juries_lines_spreadsheet(self):
         if not self.participations.count() or not self.passages.count():
-            # Not initialized yet
+            # Not initialized yet
             return
 
         translation.activate(settings.PREFERRED_LANGUAGE_CODE)

participation/views.py

@@ -557,7 +557,7 @@ class ParticipationDetailView(LoginRequiredMixin, DetailView):
         if not self.get_object().valid:
             raise PermissionDenied(_("The team is not validated yet."))
         if user.registration.is_admin or user.registration.participates \
-                and user.registration.team.participation \
+                and user.registration.team \
                 and user.registration.team.participation.pk == kwargs["pk"] \
                 or user.registration.is_volunteer \
                 and (self.get_object().tournament in user.registration.interesting_tournaments

registration/views.py

@@ -726,10 +726,11 @@ class PhotoAuthorizationView(LoginRequiredMixin, View):
     def get(self, request, *args, **kwargs):
         filename = kwargs["filename"]
         path = f"media/authorization/photo/{filename}"
-        if not os.path.exists(path):
+        student_qs = ParticipantRegistration.objects.filter(Q(photo_authorization__endswith=filename)
+                                                            | Q(photo_authorization_final__endswith=filename))
+        if not os.path.exists(path) or not student_qs.exists():
             raise Http404
-        student = ParticipantRegistration.objects.get(Q(photo_authorization__endswith=filename)
-                                                      | Q(photo_authorization_final__endswith=filename))
+        student = student_qs.get()
         user = request.user
         if not (student.user == user or user.registration.is_admin or user.registration.is_volunteer and student.team
                 and student.team.participation.tournament in user.registration.organized_tournaments.all()):