fix date issue

sync/admin.py

@@ -11,7 +11,7 @@ class SyncedObjectAdmin(admin.ModelAdmin):
     def save_model(self, request, obj, form, change):
         if isinstance(obj, BaseModel):
             obj.last_updated_by = request.user
-            obj.last_update = timezone.now()
+            # obj.last_update = timezone.now()
         super().save_model(request, obj, form, change)
 
     def delete_model(self, request, obj):

sync/models/base.py

@@ -11,7 +11,7 @@ logger = logging.getLogger(__name__)
 
 class BaseModel(models.Model):
     creation_date = models.DateTimeField(default=now, editable=False)
-    last_update = models.DateTimeField(auto_now=True)
+    last_update = models.DateTimeField(default=now)
     related_user = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL, related_name='+')
     last_updated_by = models.ForeignKey(settings.AUTH_USER_MODEL, blank=True, null=True, on_delete=models.SET_NULL, related_name='+')
     data_access_ids = models.JSONField(default=list)
@@ -22,6 +22,7 @@ class BaseModel(models.Model):
         abstract = True
 
     def save(self, *args, **kwargs):
+        self.last_update = now()
         if self.related_user is None:
             self.related_user = self.find_related_user()
         if self._state.adding: