Edit the wiki after an activity update iff the wiki password is defined, and...

Edit the wiki after an activity update iff the wiki password is defined, and don't run the script asynchronous with a SQLite database

apps/activity/models.py

 # Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+import os
 from datetime import timedelta
 from threading import Thread
 
@@ -133,9 +134,13 @@ class Activity(models.Model):
         if not settings.DEBUG and self.pk and "scripts" in settings.INSTALLED_APPS:
             def refresh_activities():
                 from scripts.management.commands.refresh_activities import Command as RefreshActivitiesCommand
-                RefreshActivitiesCommand.refresh_human_readable_wiki_page("Modification de l'activité " + self.name)
-                RefreshActivitiesCommand.refresh_raw_wiki_page("Modification de l'activité " + self.name)
-            Thread(daemon=True, target=refresh_activities).start()
+                # Consider that we can update the wiki iff the WIKI_PASSWORD env var is not empty
+                RefreshActivitiesCommand.refresh_human_readable_wiki_page("Modification de l'activité " + self.name,
+                                                                          False, os.getenv("WIKI_PASSWORD"))
+                RefreshActivitiesCommand.refresh_raw_wiki_page("Modification de l'activité " + self.name,
+                                                               False, os.getenv("WIKI_PASSWORD"))
+            Thread(daemon=True, target=refresh_activities).start()\
+                if settings.DATABASES["default"]["ENGINE"] == 'django.db.backends.postgresql' else refresh_activities()
         return ret
 
     def __str__(self):