Add grade in csv export

visits/admin.py

@@ -194,11 +194,12 @@ class ParticipationAdmin(admin.ModelAdmin):
             name = User.objects.filter(
                 email=str(list_email[nb_user])).values('first_name', 'last_name', 'phone_number')
             school = Student.objects.filter(
-                user__email=str(list_email[nb_user])).values('school', 'scholarship')
+                user__email=str(list_email[nb_user])).values('school', 'grade', 'scholarship')
 
-            row = writer.writerow([name[0]['first_name'], name[0]['last_name'], school[0]['school'], name[0]['phone_number'], school[0]['scholarship']] + [getattr(obj, field)
+            row = writer.writerow([name[0]['first_name'], name[0]['last_name'], school[0]['school'], school[0]['grade'], name[0]['phone_number'], school[0]['scholarship']] + [getattr(obj, field)
                                                                                                                                                                                for field in field_names])
 
+
             nb_user += 1
         return response