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| author | Paolo Melchiorre <paolo@melchiorre.org> | 2023-09-20 09:00:30 +0200 |
|---|---|---|
| committer | Mariusz Felisiak <felisiak.mariusz@gmail.com> | 2023-09-20 09:01:41 +0200 |
| commit | 7e4c1e8b3dd5806a17a617792a4fa0b763ef120d (patch) | |
| tree | 8f9b483baf8ee34569189f1ebbcbf627faab99e9 /docs | |
| parent | ab5124c2272da44dce6cd66838c6129d390692a7 (diff) | |
[5.0.x] Refs #31300 -- Added example to GeneratedField release notes.
Backport of 0b506bfe1ab9f1c38e439c77b3c3f81c8ac663ea from main
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/releases/5.0.txt | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/docs/releases/5.0.txt b/docs/releases/5.0.txt index 0be2872346..b60f7a6c76 100644 --- a/docs/releases/5.0.txt +++ b/docs/releases/5.0.txt @@ -134,7 +134,15 @@ Database generated model field The new :class:`~django.db.models.GeneratedField` allows creation of database generated columns. This field can be used on all supported database backends -to create a field that is always computed from other fields. +to create a field that is always computed from other fields. For example:: + + from django.db import models + from django.db.models import F + + + class Square(models.Model): + side = models.IntegerField() + area = models.GeneratedField(expression=F("side") * F("side"), db_persist=True) More options for declaring field choices ---------------------------------------- |