Caching an image in Django

[bfrederi]

I am trying to cache a small thumbnail image. The code is a bit
extensive, but the part this is breaking is that I am opening the
image file, then this:

cache.set('thumbnail_file', image_file.read())

when I go to retrieve the image with:

cache.get('thumbnail_file')

I get this traceback:

Traceback (most recent call last):
File "/home/django-code/aubrey_ark/tests.py", line 48, in
testResourceObject
ro = ResourceObject(self.meta_id)
File "/home/django-code/aubrey_ark/resource_handler.py", line 102,
in __init__
cache.get(self.meta_id+'_thumbnail')
File "/usr/lib/python2.5/site-packages/django/core/cache/backends/
memcached.py", line 30, in get
return smart_unicode(val)
File "/usr/lib/python2.5/site-packages/django/utils/encoding.py",
line 35, in smart_unicode
return force_unicode(s, encoding, strings_only, errors)
File "/usr/lib/python2.5/site-packages/django/utils/encoding.py",
line 70, in force_unicode
raise DjangoUnicodeDecodeError(s, *e.args)
DjangoUnicodeDecodeError: 'utf8' codec can't decode byte 0xff in
position 0: unexpected code byte. You passed in '\xff\xd8\xff
\xe0\x00\x10JFIF\x00\x01\x01\x01\x01,\x01,\x00\x00\xff\xfe\x00
{FWv4-47_1, Tue Jul 18, 2006, 2:37:50 PM, 8G, 7710x10590,
(1578+1912), 125%, Repro 2.2 v2, 1/100 s, R63.1, G54.9, B68.2\xff\xdb
\x00C\x00\x08\x06\x06\x07\x06\x05\x08\x07\x07\x07\t\t\x08\n\x0c\x14\r
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\' ",#\x1c\x1c(7),01444\x1f\'9=82<.342\xff\xc0\x00\x0b\x08\x00Z\x00=
\x01\x01\x11\x00\xff\xc4\x00\x1a
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\xd9' (<type 'str'>)

Any clue on how to fix this. Should I be doing a special encoding/
compression before placing the image file into the cache?

Thanks

[Ramiro Morales]

> position 0: unexpected code byte. You passed in '\xff\xd8\xff...
> [...]

>
> Any clue on how to fix this. Should I be doing a special encoding/
> compression before placing the image file into the cache?
>

See tickets #9180 and #5589 for related reports and proposed workarounds/fixes
when using the memcache backend.

Regards,

--
Ramiro Morales

[bfrederi]

I don't think those ticket numbers are correct. Those are dealing with
forms... not caching.

On Nov 20, 2:13 pm, "Ramiro Morales" <cra...@gmail.com> wrote:

[bfrederi]

My apologies, those tickets are exactly what I was looking for.
Thanks!

http://code.djangoproject.com/ticket/9180
http://code.djangoproject.com/ticket/5589