#27716: FieldFile incorrectly returns bytes the first time it is opened with 'r'
-------------------------------------+-------------------------------------
Reporter: Tom | Owner: nobody
Type: Bug | Status: new
Component: File | Version: 1.10
uploads/storage |
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
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Description changed by Tom:
Old description:
> This is strange. On the latest 1.10 release with Python 3.5.2 if I have
> this model, created in a fresh project with no non-default settings
> (other than 'MEDIA_ROOT' set to a directory and a single app in
> INSTALLED_APPS with this model):
>
> {{{
> class SomeModel(models.Model):
> fd = models.FileField()
> }}}
>
> Then I run this in `manage.py shell`:
>
> {{{
> >>> s = SomeModel.objects.create(fd='test.txt')
> >>> s.fd.size
> 5
> >>> s.fd.closed
> True
> >>> s.fd.open('r')
> >>> s.fd.read()
> b'hello'
> >>> s.fd.close()
> >>> s.fd.open('r')
> >>> s.fd.read()
> 'hello'
> }}}
>
> The first time a `FileField` is opened it appears to disregard the
> encoding given and always returns bytes. However the second time it
> correctly returns a string. If you re-fetch the model then the behavior
> happens again.
New description:
This is strange. On the latest 1.10 release with Python 3.5.2 if I have
this model, created in a fresh project with no non-default settings (other
than 'MEDIA_ROOT' set to a directory and a single app in INSTALLED_APPS
with this model):
{{{
class SomeModel(models.Model):
fd = models.FileField()
}}}
Then I run this in `manage.py shell`:
{{{
>>> s = SomeModel.objects.create(fd='test.txt')
>>> s.fd.size
5
>>> s.fd.closed
True
>>> s.fd.open('r')
>>> s.fd.read()
b'hello'
>>> s.fd.close()
>>> s.fd.open('r')
>>> s.fd.read()
'hello'
}}}
The first time a `FileField` is opened it appears to disregard the
encoding given and always returns bytes. However the second time it
correctly returns a string. If you re-fetch the model then the behavior
happens again.
Just to mention that I'm on Linux, but my co-worker is on Windows and both
appear to have this behavior.
--
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Ticket URL: <https://code.djangoproject.com/ticket/27716#comment:1>
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