# -*- coding: utf-8 -*-
# Akvo RSR is covered by the GNU Affero General Public License.
# See more details in the license.txt file located at the root folder of the Akvo RSR module.
# For additional details on the GNU license please see < http://www.gnu.org/licenses/agpl.html >.
from sorl.thumbnail.base import ThumbnailBackend, EXTENSIONS
from sorl.thumbnail.conf import settings
from sorl.thumbnail.helpers import tokey, serialize
[docs]class CustomThumbnailBackend(ThumbnailBackend):
def _get_thumbnail_filename(self, source, geometry_string, options):
"""Computes the destination filename.
Overridden to generate the same filename as generated with
'django.core.files.storage.FileSystemStorage' backend, irrespective of
what the current storage back-end is.
"""
source_key = tokey(source.name, 'django.core.files.storage.FileSystemStorage')
key = tokey(source_key, geometry_string, serialize(options))
path = '%s/%s/%s' % (key[:2], key[2:4], key)
return '%s%s.%s' % (settings.THUMBNAIL_PREFIX, path, EXTENSIONS[options['format']])