#26495: Saving StringIO using custom storage class may result in empty content
written to file
-------------------------------------+-------------------------------------
Reporter: m-novikov | Owner: nobody
Type: Uncategorized | Status: new
Component: File | Version: master
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 m-novikov:
Old description:
> https://github.com/django/django/blob/master/django/core/files/storage.py#L50
> {{{
> #!python
> class Storage(object):
>
> def save(self, name, content, max_length=None):
> ...
> if not hasattr(content, 'chunks'):
> content = File(content)
> }}}
> For example if custom storage uses requests with post query.
> {{{
> #!python
> import requests
> class CustomStorage(object):
> def _save(self, name, content, max_length=None):
> requests.post('http://testhost.org/upload', data=content)
> }}}
> But it will result in empty upload as bool(content) is False.
> Possibly better to pass a name to File object. To ensure bool(content) is
> True
> {{{
> #!python
> if not hasattr(content, 'chunks'):
> content = File(content, name=name)
> }}}
New description:
https://github.com/django/django/blob/master/django/core/files/storage.py#L50
{{{
#!python
class Storage(object):
def save(self, name, content, max_length=None):
...
if not hasattr(content, 'chunks'):
content = File(content)
}}}
For example if custom storage uses requests with post query and we are
saving StringIO object.
{{{
#!python
from StringIO import StringIO
from django.core.files.storage import Storage
import requests
class CustomStorage(Storage):
def _save(self, name, content, max_length=None):
requests.post('http://testhost.org/upload', data=content)
custom_storage = CustomStorage()
custom_storage.save('new_name', StringIO('content'))
}}}
But it will result in empty upload as bool(content) is False.
Possibly better to pass a name to File object. To ensure bool(content) is
True
{{{
#!python
if not hasattr(content, 'chunks'):
content = File(content, name=name)
}}}
--
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Ticket URL: <https://code.djangoproject.com/ticket/26495#comment:4>
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