mirrors/django
1
0
Fork 0
mirror of https://github.com/django/django.git synced 2025-06-05 03:29:12 +00:00
Code Issues 32 Releases Wiki Activity

[2.2.x] Fixed #30326 -- Doc'd how to avoid persistence of F() assignment.

Browse Source 
Backport of bfae195b0a2c8dae755610a7e23add5c6bc37b5e from master
This commit is contained in:
sage 2019-04-13 09:17:33 +07:00 committed by Mariusz Felisiak
parent 896cc71901
commit 86de106864
1 changed files with 3 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
docs/ref/models/expressions.txt
View File

@ -185,7 +185,9 @@ instance and will be applied on each :meth:`~Model.save()`. For example::
reporter.save() reporter.save()
``stories_filed`` will be updated twice in this case. If it's initially ``1``, ``stories_filed`` will be updated twice in this case. If it's initially ``1``,
the final value will be ``3``. the final value will be ``3``. This persistence can be avoided by reloading the
model object after saving it, for example, by using
:meth:`~Model.refresh_from_db()`.
Using ``F()`` in filters Using ``F()`` in filters
~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~