#32653: Issue with multiple database backends sharing a model with a very long
name
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Reporter: Javier | Owner: nobody
Buzzi |
Type: Bug | Status: new
Component: Database | Version: 2.2
layer (models, ORM) |
Severity: Normal | Keywords:
Triage Stage: | Has patch: 0
Unreviewed |
Needs documentation: 0 | Needs tests: 0
Patch needs improvement: 0 | Easy pickings: 0
UI/UX: 0 |
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''Original discussion can be found here: https://groups.google.com/g
/django-developers/c/f3Z0AchkdyU/m/q0puWHYOCgAJ''
I have a model with a really long name think
`ThisIsAReallyLongModelNameThatIsAlsoVeryOld`. To complicate things
further I have a Oracle instance with archival data designated with
connection name `old` and a new postgres instance with the connection name
`default`.
Issue i've found is that if i try and call the model
`ThisIsAReallyLongModelNameThatIsAlsoVeryOld.objects.using('old').count()`
i get an error saying that the table `APP_THISISAREALLYLONGMODEL5300` does
not exist, when it should be using `APP_THISISAREALLYLONGMODEL5BD6`
instead. When postgres is used it works as expected:
`ThisIsAReallyLongModelNameThatIsAlsoVeryOld.objects.using('default').count()`
This is because the default connection is used when the model is
instantiated, and then its used from that moment on.
https://github.com/django/django/blob/stable/3.2.x/django/db/models/options.py#L207
This is an issue that seems to go back to the beginning of Django.
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Ticket URL: <https://code.djangoproject.com/ticket/32653>
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