#27955: JSONField.default not applied in admin
----------------------------------+--------------------------------------
     Reporter:  Jannis            |                    Owner:  nobody
         Type:  Bug               |                   Status:  new
    Component:  contrib.admin     |                  Version:  1.10
     Severity:  Normal            |               Resolution:
     Keywords:  JSONField, admin  |             Triage Stage:  Unreviewed
    Has patch:  0                 |      Needs documentation:  0
  Needs tests:  0                 |  Patch needs improvement:  0
Easy pickings:  0                 |                    UI/UX:  0
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Description changed by Jannis:

Old description:

> Consider a model like this:
>
> {{{
> class Example(models.Model):
>     json = JSONField(
>         default=list,
>         blank=True
>     )
> }}}
>
> Creating an object programmatically works and applies the default value
> just fine. Saving an object with an empty value for the `JSONField`
> triggers an IntegrityError because Django tries to save an object with
> `null` instead of the default.

New description:

 Consider a model like this:

 {{{
 class Example(models.Model):
     json = JSONField(
         default=list,
         blank=True
     )
 }}}

 Creating an object programmatically works and applies the default value
 just fine. Saving an object with an empty value for the `JSONField`
 triggers an IntegrityError because Django tries to save an object with
 `null` instead of the default.

 I'm not sure whether this ticket is a duplicate of
 https://code.djangoproject.com/ticket/27697 but I think this issue with
 the ignored default may have a different origin.

--

--
Ticket URL: <https://code.djangoproject.com/ticket/27955#comment:1>
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