Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-07 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  bcail
 Type:   |   Status:  closed
  Cleanup/optimization   |
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Release blocker  |   Resolution:  fixed
 Keywords:   | Triage Stage:  Ready for
 |  checkin
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Comment (by Mariusz Felisiak ):

 In [changeset:"5f07460a67825bfc3f0129feec94a24bbf6d2a5f" 5f07460a]:
 {{{#!CommitTicketReference repository=""
 revision="5f07460a67825bfc3f0129feec94a24bbf6d2a5f"
 [5.0.x] Fixed #35223 -- Made Model.full_clean() ignore fields with
 db_default when validating empty values.

 Thanks Brian Ibbotson for the report.

 Regression in 7414704e88d73dafbcfbb85f9bc54cb6111439d3.

 Backport of 1570ef02f34037d32218d463342592debccf915c from main.
 }}}
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-07 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  bcail
 Type:   |   Status:  closed
  Cleanup/optimization   |
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Release blocker  |   Resolution:  fixed
 Keywords:   | Triage Stage:  Ready for
 |  checkin
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Mariusz Felisiak ):

 * resolution:   => fixed
 * status:  assigned => closed

Comment:

 In [changeset:"1570ef02f34037d32218d463342592debccf915c" 1570ef0]:
 {{{#!CommitTicketReference repository=""
 revision="1570ef02f34037d32218d463342592debccf915c"
 Fixed #35223 -- Made Model.full_clean() ignore fields with db_default when
 validating empty values.

 Thanks Brian Ibbotson for the report.

 Regression in 7414704e88d73dafbcfbb85f9bc54cb6111439d3.
 }}}
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-07 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  bcail
 Type:   |   Status:  assigned
  Cleanup/optimization   |
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Release blocker  |   Resolution:
 Keywords:   | Triage Stage:  Ready for
 |  checkin
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Mariusz Felisiak):

 * owner:  Damir Nafikov => bcail
 * stage:  Accepted => Ready for checkin

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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-07 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  Damir
 Type:   |  Nafikov
  Cleanup/optimization   |   Status:  assigned
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Release blocker  |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Comment (by Mariusz Felisiak):

 Bug in 414704e88d73dafbcfbb85f9bc54cb6111439d3.
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-07 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  Damir
 Type:   |  Nafikov
  Cleanup/optimization   |   Status:  assigned
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Release blocker  |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Mariusz Felisiak):

 * severity:  Normal => Release blocker

Comment:

 Bumping to a release blocker as `Model.full_clean()` crashes on some
 expressions, e.g.
 {{{
   File "/django/tests/field_defaults/tests.py", line 175, in
 test_full_clean
 obj.full_clean()
   File "/django/django/db/models/base.py", line 1586, in full_clean
 self.clean_fields(exclude=exclude)
   File "/django/django/db/models/base.py", line 1641, in clean_fields
 setattr(self, f.attname, f.clean(raw_value, self))
   File "/django/django/db/models/fields/__init__.py", line 830, in clean
 value = self.to_python(value)
   File "/django/django/db/models/fields/__init__.py", line 1620, in
 to_python
 parsed = parse_datetime(value)
   File "/django/django/utils/dateparse.py", line 114, in parse_datetime
 return datetime.datetime.fromisoformat(value)
 TypeError: fromisoformat: argument must be str
 }}}
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-05 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  Damir
 Type:   |  Nafikov
  Cleanup/optimization   |   Status:  assigned
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  1|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by bcail):

 * has_patch:  0 => 1

Comment:

 I opened [https://github.com/django/django/pull/17939 a PR].
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-03-04 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  Damir
 Type:   |  Nafikov
  Cleanup/optimization   |   Status:  assigned
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by bcail):

 * cc: bcail (added)

Comment:

 @Damir Nafikov, are you still working on this ticket?
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-21 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  Damir
 Type:   |  Nafikov
  Cleanup/optimization   |   Status:  assigned
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Damir Nafikov):

 * owner:  nobody => Damir Nafikov
 * status:  new => assigned

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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-17 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  nobody
 Type:   |   Status:  new
  Cleanup/optimization   |
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:  Accepted
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Changes (by Mariusz Felisiak):

 * stage:  Unreviewed => Accepted
 * type:  Bug => Cleanup/optimization

Comment:

 Replying to [comment:4 Simon Charette]:
 > I believe that we should find a way to have `db_default` behave the same
 way as generated fields when no value has been assigned to the instance
 when `full_clean` is called (#35127). Requiring users to explicitly pass
 it to `exclude` is simply bad ergonomics IMO.

 Agreed, I think we should treat this as a cleanup not bug.
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-16 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  nobody
 Type:  Bug  |   Status:  new
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Comment (by Simon Charette):

 I believe that we should find a way to have `db_default` behave the same
 way as generated fields when no value has been assigned to the instance
 when `full_clean` is called (#35127). Requiring users to explicitly pass
 it to `exclude` is simply bad ergonomics IMO.

 One thing that the solution should take into account is that the value
 should only be skipped when the value is not assigned. In other words

 {{{#!python
 class Article(models.Model):
upvotes = models.PositiveIntegerField(db_default=0)

 a1 = Article(upvotes=-1)
 a1.full_clean()  # should raise a ValidationError

 a2 = Article(upvotes=42)
 a2.full_clean()  # should *not* raise a ValidationError

 a1 = Article()
 a1.full_clean()  # should not raise a ValidationError
 }}}

 In other words, when a value is present it should be validated otherwise
 if `db_default` is provided it should be assumed to be valid just like
 it's the case with generated fields.

 A workaround in the mean time is to have both `default` and `db_default`
 assigned but obviously that kind of defeats the purpose of using
 `db_default` in the first place.
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-16 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  nobody
 Type:  Bug  |   Status:  new
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Comment (by Mariusz Felisiak):

 > I would suggest having fields with db_default be excluded by default
 from full_clean()

 `db_default` is just a default value, we cannot always exclude it from
 `full_clean()`. What about not valid values provided explicitly in
 `create()`? What about `None` when field is non-nullable? etc.
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-16 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  nobody
 Type:  Bug  |   Status:  new
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Description changed by Brian Ibbotson:

Old description:

> Starting to migrate models in my (large) project to use Django 5’s new
> db_default attribute for fields (using Django 5.0.2), encountering
> behavior contrary to my expectations.
>
> A field with {{{db_default}}} raises a {{{ValidationError}}} when
> {{{full_clean()}}} called, if that field has been omitted from the
> {{{create()}}} call.
>
> This is (to me) unexpected behavior. Would expect that no error would be
> raised, the instance would be saved successfully, with the specified
> {{{db_default}}} value set at the database level.
>
> Has been explained to me in the Django forums that this is correct, that
> I should instead either
>
> (1) explicitly choose to {{{exclude}}} the missing fields from
> {{{full_clean()}}} call,
> (2) write a custom clean method for each field, or
> (3) simply save the instance rather than calling {{{full_clean()}}}
>
> Had always been impressed on me that it is best practice to always call
> {{{full_clean()}}} on instance creation and/or update.
>
> In either case, having to determine the missing fields and annotate the
> {{{full_clean()}}} call or write a custom clean method per field seem to
> work against the usual conception of a default value, which should
> propagate... well, ''by default'' and allow for simpler operation where
> possible.
>
> I would suggest having fields with {{{db_default}}} be excluded by
> default from {{{full_clean()}}}
>
> If the current behavior is re-affirmed, would suggest incorporating the
> suggested 3 workaround steps into the Django documentation, as I suspect
> most users would have similar expectations as myself when implementing
> this in future code.

New description:

 Starting to migrate models in my (large) project to use Django 5’s new
 {{{db_default}}} attribute for fields (using Django 5.0.2), encountering
 behavior contrary to my expectations.

 A field with {{{db_default}}} raises a {{{ValidationError}}} when
 {{{full_clean()}}} called, if that field has been omitted from the
 {{{create()}}} call.

 This is (to me) unexpected behavior. Would expect that no error would be
 raised, the instance would be saved successfully, with the specified
 {{{db_default}}} value set at the database level.

 Has been explained to me in the Django forums that the
 {{{ValidationError}}} is correct, that I should instead either

 (1) explicitly choose to {{{exclude}}} the missing fields from
 {{{full_clean()}}} call,
 (2) write a custom clean method for each field, or
 (3) simply save the instance rather than calling {{{full_clean()}}}

 Had always been impressed on me that it is best practice to always call
 {{{full_clean()}}} on instance creation and/or update.

 In either case, having to determine the missing fields and annotate the
 {{{full_clean()}}} call or write a custom clean method per field seem to
 work against the usual conception of a default value, which should
 propagate... well, ''by default'' and allow for simpler operation where
 possible.

 I would suggest having fields with {{{db_default}}} be excluded by default
 from {{{full_clean()}}}

 If the current behavior is re-affirmed, would suggest incorporating the
 suggested 3 workaround steps into the Django documentation, as I suspect
 most users would have similar expectations as myself when implementing
 this in future code.

--
-- 
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Django 
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Re: [Django] #35223: Fields with db_default raise ValidationErrors when full_clean() called

2024-02-16 Thread Django
#35223: Fields with db_default raise ValidationErrors when full_clean() called
-+-
 Reporter:  Brian Ibbotson   |Owner:  nobody
 Type:  Bug  |   Status:  new
Component:  Database layer   |  Version:  5.0
  (models, ORM)  |
 Severity:  Normal   |   Resolution:
 Keywords:   | Triage Stage:
 |  Unreviewed
Has patch:  0|  Needs documentation:  0
  Needs tests:  0|  Patch needs improvement:  0
Easy pickings:  0|UI/UX:  0
-+-
Description changed by Brian Ibbotson:

Old description:

> Starting to migrate models in my (large) project to use Django 5’s new
> db_default attribute for fields (using Django 5.0.2), encountering
> behavior contrary to my expectations.
>
> A field with {{{db_default}}} raises a {{{ValidationError}}} when
> {{{full_clean()}}} called, if that field has been omitted from the
> {{{create()}}} call.
>
> This is (to me) unexpected behavior. Would expect that no error would be
> raised, the instance would be saved successfully, with the specified
> {{{db_default}}} value set at the database level.
>
> Has been explained to me in the Django forums that this is correct, that
> I should instead either
>
> (1) explicitly choose to {{{exclude}}} the missing fields from
> {{full_clean()}}} call,
> (2) write a custom clean method for each field, or
> (3) simply save the instance rather than calling {{{full_clean()}}}
>
> Had always been impressed on me that it is best practice to always call
> {{{full_clean()}}} on instance creation and/or update.
>
> In either case, having to determine the missing fields and annotate the
> {{{full_clean()}}} call or write a custom clean method per field seem to
> work against the usual conception of a default value, which should
> propagate... well, ''by default'' and allow for simpler operation where
> possible.
>
> I would suggest having fields with {{{db_default}}} be excluded by
> default from {{{full_clean()}}}
>
> If the current behavior is re-affirmed, would suggest incorporating the
> suggested 3 workaround steps into the Django documentation, as I suspect
> most users would have similar expectations as myself when implementing
> this in future code.

New description:

 Starting to migrate models in my (large) project to use Django 5’s new
 db_default attribute for fields (using Django 5.0.2), encountering
 behavior contrary to my expectations.

 A field with {{{db_default}}} raises a {{{ValidationError}}} when
 {{{full_clean()}}} called, if that field has been omitted from the
 {{{create()}}} call.

 This is (to me) unexpected behavior. Would expect that no error would be
 raised, the instance would be saved successfully, with the specified
 {{{db_default}}} value set at the database level.

 Has been explained to me in the Django forums that this is correct, that I
 should instead either

 (1) explicitly choose to {{{exclude}}} the missing fields from
 {{{full_clean()}}} call,
 (2) write a custom clean method for each field, or
 (3) simply save the instance rather than calling {{{full_clean()}}}

 Had always been impressed on me that it is best practice to always call
 {{{full_clean()}}} on instance creation and/or update.

 In either case, having to determine the missing fields and annotate the
 {{{full_clean()}}} call or write a custom clean method per field seem to
 work against the usual conception of a default value, which should
 propagate... well, ''by default'' and allow for simpler operation where
 possible.

 I would suggest having fields with {{{db_default}}} be excluded by default
 from {{{full_clean()}}}

 If the current behavior is re-affirmed, would suggest incorporating the
 suggested 3 workaround steps into the Django documentation, as I suspect
 most users would have similar expectations as myself when implementing
 this in future code.

--
-- 
Ticket URL: 
Django 
The Web framework for perfectionists with deadlines.

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