[1.4.X] Fixed #15566 - Documented that update() doesn't honor DateField.auto_now

Thanks Shabda Raaj for the draft patch.

Backport of dc01e41d23 from master

1 files changed, 6 insertions, 5 deletions

diff --git a/docs/topics/db/queries.txt b/docs/topics/db/queries.txt
index 0a67b9b486..e7b45f04fd 100644
--- a/docs/topics/db/queries.txt
+++ b/docs/topics/db/queries.txt
@@ -968,11 +968,12 @@ Be aware that the ``update()`` method is converted directly to an SQL
 statement. It is a bulk operation for direct updates. It doesn't run any
 :meth:`~django.db.models.Model.save` methods on your models, or emit the
 ``pre_save`` or ``post_save`` signals (which are a consequence of calling
-:meth:`~django.db.models.Model.save`). If you want to save every item in a
-:class:`~django.db.models.query.QuerySet` and make sure that the
-:meth:`~django.db.models.Model.save` method is called on each instance, you
-don't need any special function to handle that. Just loop over them and call
-:meth:`~django.db.models.Model.save`::
+:meth:`~django.db.models.Model.save`), or honor the
+:attr:`~django.db.models.DateField.auto_now` field option.
+If you want to save every item in a :class:`~django.db.models.query.QuerySet`
+and make sure that the :meth:`~django.db.models.Model.save` method is called on
+each instance, you don't need any special function to handle that. Just loop
+over them and call :meth:`~django.db.models.Model.save`::
 
     for item in my_queryset:
         item.save()