Commit e192739b authored by Aymeric Augustin's avatar Aymeric Augustin
Browse files

Fixed #20409 -- Clarified how unique_for_date works when USE_TZ is set.

parent 31e16c13

docs/ref/models/fields.txt

+3 −1
Original line number Diff line number Diff line
@@ -300,7 +300,9 @@ For example, if you have a field ``title`` that has 
records with the same ``title`` and ``pub_date``.



Note that if you set this to point to a :class:`DateTimeField`, only the date

portion of the field will be considered.

portion of the field will be considered. Besides, when :setting:`USE_TZ` is

``True``, the check will be performed in the :ref:`current time zone

<default-current-time-zone>` at the time the object gets saved.



This is enforced by :meth:`Model.validate_unique()` during model validation

but not at the database level. If any :attr:`~Field.unique_for_date` constraint