[Django] #35019: GeneratedField save error

[Django]

#35019: GeneratedField save error
-------------------------------------+-------------------------------------
Reporter: Deb Kumar | Owner: nobody
Das |
Type: Bug | Status: new
Component: | Version: 5.0
Uncategorized | Keywords: GeneratedField save
Severity: Normal | error
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
-------------------------------------+-------------------------------------
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.
}}}

--
Ticket URL: <https://code.djangoproject.com/ticket/35019>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

[Django]

#35019: GeneratedField save error
-------------------------------------+-------------------------------------

Reporter: Deb Kumar Das | Owner: nobody
Type: Bug | Status: new
Component: Uncategorized | Version: 5.0
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
-------------------------------------+-------------------------------------

Changes (by Deb Kumar Das):

* Attachment "django_error.PNG" added.

[Django]

#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
-------------------------------------+-------------------------------------
Changes (by Deb Kumar Das):

* component: Uncategorized => Database layer (models, ORM)

--
Ticket URL: <https://code.djangoproject.com/ticket/35019#comment:1>

[Django]

#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.
}}}

--

--
Ticket URL: <https://code.djangoproject.com/ticket/35019#comment:2>

[Django]

#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):

> 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.
}}}

**attached error screenshot**

--

--
Ticket URL: <https://code.djangoproject.com/ticket/35019#comment:3>