[Django] #36269: Cant override storage used in a FileField other than the default storage

[Django]

#36269: Cant override storage used in a FileField other than the default storage
-------------------------------------+-------------------------------------
Reporter: emillumine | Type: Bug
Status: new | Component: File
| uploads/storage
Version: 5.2 | Severity: Normal
Keywords: override_settings, | Triage Stage:
storages | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------
It seems that the default storage and other user defined storages dont
have the same behaviour in tests.
When overriding the settings.STORAGES in tests we can easily replace the
default storage whereas it doesn't work for another user defined storage.
I tried to reproduce my problem with a minimal code below.

It may seems successful at first because the first assertion `assert
storages["other_storage"]._location == "other_location"` is green. But the
last one `assert test.other_file.storage._location == "other_location"` is
not. Its value is the one defined in settings.STORAGES.

I would expect a similar behaviour in both cases.

{{{
# settings.py
STORAGES = {
"default": {
"BACKEND": "django.core.files.storage.FileSystemStorage",
},
"staticfiles": {
"BACKEND":
"django.contrib.staticfiles.storage.StaticFilesStorage",
},
"other_storage": {
"BACKEND": "django.core.files.storage.FileSystemStorage",
}
}
}}}


{{{
# test.py

from django.test import override_settings
from django.core.files.storage import default_storage
from django.core.files.storage import storages
from django.core.files.storage import InMemoryStorage
from django.db import models
from django.core.files.base import ContentFile


def select_other_storage():
return storages["other_storage"]

def select_default_storage():
return default_storage


class TestModel(models.Model):
other_file = models.FileField(storage=select_other_storage)
default_file = models.FileField(storage=select_default_storage)

class Meta:
app_label = "test"

@override_settings(
STORAGES={
"default": {
"BACKEND": "django.core.files.storage.InMemoryStorage",
"OPTIONS": {
"location": "default_location",
},
},
"other_storage": {
"BACKEND": "django.core.files.storage.InMemoryStorage",
"OPTIONS": {
"location": "other_location",
},
}
}
)
def test_override_settings():
assert default_storage._location == "default_location"
assert storages["other_storage"]._location == "other_location"

test = TestModel(
other_file=ContentFile("test data", name="test.pdf"),
default_file=ContentFile("test data", name="test.pdf"),
)
assert isinstance(test.default_file.storage, InMemoryStorage)
assert test.default_file.storage._location == "default_location"
# following assertions fail
assert isinstance(test.other_file.storage, InMemoryStorage)
assert test.other_file.storage._location == "other_location"
}}}
--
Ticket URL: <https://code.djangoproject.com/ticket/36269>
Django <https://code.djangoproject.com/>
The Web framework for perfectionists with deadlines.

[Django]

#36269: Cant override storage used in a FileField other than the default storage
-------------------------------------+-------------------------------------

Reporter: emillumine | Owner: (none)
Type: Bug | Status: new
Component: File | Version: 5.1
uploads/storage |
Severity: Normal | Resolution:

Keywords: override_settings, | Triage Stage:
storages | Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
-------------------------------------+-------------------------------------

Changes (by emillumine):

* version: 5.2 => 5.1

--
Ticket URL: <https://code.djangoproject.com/ticket/36269#comment:1>