def save_thumb(self, id, thumb, **values):
"""Save a thumbnail uploaded with :class:`~mediacore.forms.admin.ThumbForm`.
:param id: Media ID. If ``"new"`` a new Media stub is created with
:func:`~mediacore.model.media.create_podcast_stub`.
:type id: ``int`` or ``"new"``
:param file: The uploaded file
:type file: :class:`cgi.FieldStorage` or ``None``
:rtype: JSON dict
:returns:
success
bool
message
Error message, if unsuccessful
id
The :attr:`~mediacore.model.podcasts.Podcast.id` which is
important if a new podcast has just been created.
"""
if id == 'new':
podcast = create_podcast_stub()
else:
podcast = fetch_row(Podcast, id)
try:
# Create jpeg thumbs
img = Image.open(thumb.file)
if id == 'new':
DBSession.add(podcast)
DBSession.flush()
# TODO: Allow other formats?
for key, xy in config['thumb_sizes'][podcast._thumb_dir].iteritems():
thumb_path = helpers.thumb_path(podcast, key)
thumb_img = helpers.resize_thumb(img, xy)
thumb_img.save(thumb_path)
# Backup the original image just for kicks
backup_type = os.path.splitext(thumb.filename)[1].lower()[1:]
backup_path = helpers.thumb_path(podcast, 'orig', ext=backup_type)
backup_file = open(backup_path, 'w+b')
thumb.file.seek(0)
shutil.copyfileobj(thumb.file, backup_file)
thumb.file.close()
backup_file.close()
success = True
message = None
except IOError, e:
success = False
message = 'Unsupported image type'