Fix rules to use correct dates from Documentation calendar event

aleksis/apps/alsijil/util/predicates.py

@@ -2,7 +2,7 @@ from typing import Any, Union
 
 from django.contrib.auth.models import User
 from django.db.models import Q
-from django.utils.timezone import localdate, localtime
+from django.utils.timezone import localdate, now
 
 from rules import predicate
 
@@ -481,11 +481,11 @@ def is_in_allowed_time_range(user: User, obj: Documentation):
         get_site_preferences()["alsijil__allow_edit_future_documentations"] == "all"
         or (
             get_site_preferences()["alsijil__allow_edit_future_documentations"] == "current_day"
-            and obj.datetime_start.date() <= localdate()
+            and obj.value_start_datetime(obj).date() <= localdate()
         )
         or (
             get_site_preferences()["alsijil__allow_edit_future_documentations"] == "current_time"
-            and obj.datetime_start <= localtime()
+            and obj.value_start_datetime(obj) <= now()
         )
     ):
         return True
@@ -495,6 +495,6 @@ def is_in_allowed_time_range(user: User, obj: Documentation):
 @predicate
 def is_in_allowed_time_range_for_participation_status(user: User, obj: Documentation):
     """Predicate which checks if the documentation is in the allowed time range for editing."""
-    if obj and obj.datetime_start <= localtime():
+    if obj and obj.value_start_datetime(obj) <= now():
         return True
     return False