#25638: update using Concat with Value causes error-encoding in SQLite
-------------------------------------+-------------------------------------
Reporter: bearxu83 | Owner: nobody
Type: Bug | Status: new
Component: Database layer | Version: 1.8
(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
-------------------------------------+-------------------------------------
Old description:
> Suppose we want to concat a string to the end of a Charfield.
> If we use:
> Model.objects.update(field=Concat('field', Value("end")))
>
> it will commit successfully, but the field will inlcude error-encoding
> text in SQLite. If we select the field from db, db will say
> "OperationalError: Could not decode to UTF-8 column 'name' with text".
>
> Instead,
> Model.objects.update(field=Concat('field', Value("end"), None))
> it will be OK.
New description:
Suppose we want to concat a string to the end of a Charfield.
If we use:
{{{
Model.objects.update(field=Concat('field', Value("end")))`
}}}
it will commit successfully, but the field will inlcude error-encoding
text in SQLite. If we select the field from db, db will say
"OperationalError: Could not decode to UTF-8 column 'name' with text".
Instead,
{{{
Model.objects.update(field=Concat('field', Value("end"), None))
}}}
it will be OK.
--
Comment (by timgraham):
No trouble with this either:
{{{
def test_concat_update(self):
author = Author.objects.create(name='Jὀy')
Author.objects.update(name=Concat('name', Value('eὀd')))
author.refresh_from_db()
self.assertEqual(author.name, 'Jὀyeὀd')
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/25638#comment:3>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.
--
You received this message because you are subscribed to the Google Groups
"Django updates" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
To view this discussion on the web visit
https://groups.google.com/d/msgid/django-updates/066.74c24d44d7e237964791d80865432da4%40djangoproject.com.
For more options, visit https://groups.google.com/d/optout.
