#35019: GeneratedField save error
-------------------------------------+-------------------------------------
Reporter: Deb Kumar Das | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 5.0
(models, ORM) |
Severity: Normal | Resolution:
Keywords: GeneratedField save | Triage Stage:
error | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
Description changed by Deb Kumar Das:
Old description:
> When using GeneratedField column along with a ForeignKey column, getting
> error while saving.
> The below model throws error while saving data from admin panel.
> {{{
> #!python
> class Square(models.Model):
> id = models.BigAutoField(primary_key=True)
> side = models.IntegerField()
> area = models.GeneratedField(
> expression=F("side") * F("side"),
> output_field=models.BigIntegerField(),
> db_persist=True,
> )
> user = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
> }}}
>
> Throws the below error
>
> {{{
> Cannot force an update in save() with no primary key.
> }}}
New description:
When using GeneratedField column along with a ForeignKey column, getting
error while saving.
The below model throws error while saving data from admin panel.
{{{
#!python
class Square(models.Model):
side = models.IntegerField()
area = models.GeneratedField(
expression=F("side") * F("side"),
output_field=models.BigIntegerField(),
db_persist=True,
)
user = models.ForeignKey(get_user_model(), on_delete=models.CASCADE)
}}}
Throws the below error
{{{
Cannot force an update in save() with no primary key.
}}}
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Ticket URL: <https://code.djangoproject.com/ticket/35019#comment:2>
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