Sorl thumbnail has a low-level API that allows you to do, for example:
from sorl.thumbnail import get_thumbnail
im = get_thumbnail(my_file, '100x100', crop='center', quality=99)
This returns a reference to the cached file. If it's already been created, it's super quick. However, if it has to create it for the first time it can take a long time when using remote storage such as S3.
Is there a way to run a command in Python (ie. not in a template) to check if sorl will have to generate a thumbnail for the first time?
PS. I'm aware of similar question here but this is asking about it in a template context, and has a hacky solution as an answer that uses custom SQL and not the sorl API.
In my version sorl.thumbnail, 11.12, the method get_thumbnail is defined in sorl.thumbnail.base.py and starts as follows:
def get_thumbnail(self, file_, geometry_string, **options):
"""..."""
source = ImageFile(file_)
for key, value in self.default_options.iteritems():
options.setdefault(key, value)
# ...
for key, attr in self.extra_options:
value = getattr(settings, attr)
if value != getattr(default_settings, attr):
options.setdefault(key, value)
name = self._get_thumbnail_filename(source, geometry_string, options)
thumbnail = ImageFile(name, default.storage)
cached = default.kvstore.get(thumbnail)
if cached:
return cached
if not thumbnail.exists():
...
If you use this code and return something like
cached or thumbnail.exists()
this should give you the desired result.
