def get_source_file(self):
app_config = apps.get_app_config('thumbnails')
app_static_dir = os.path.join(app_config.path, 'static')
app_storage = FileSystemStorage(app_static_dir)
media_storage = FileSystemStorage()
path = 'thumbnails/wolf.jpg'
if not media_storage.exists(path):
media_storage.save(path, app_storage.open(path))
elif app_storage.modified_time(path) > media_storage.modified_time(
path):
media_storage.delete(path)
media_storage.save(path, app_storage.open(path))
return SourceFile(media_storage.open(path), path, media_storage)
class DummyExternalStorage(Storage):
def __init__(self, *args, **kwargs):
self.wrapped = FileSystemStorage(*args, **kwargs)
def path(self, name):
# Overridden to give it the behaviour of the base Storage class
# This is what an external storage backend would have
raise NotImplementedError("This backend doesn't support absolute paths.")
def _open(self, name, mode='rb'):
# Overridden to return a DummyExternalStorageFile instead of a normal
# File object
return DummyExternalStorageFile(open(self.wrapped.path(name), mode))
# Wrap all other functions
def _save(self, name, content):
return self.wrapped._save(name, content)
def delete(self, name):
self.wrapped.delete(name)
def exists(self, name):
return self.wrapped.exists(name)
def listdir(self, path):
return self.wrapped.listdir(path)
def size(self, name):
return self.wrapped.size(name)
def url(self, name):
return self.wrapped.url(name)
def accessed_time(self, name):
return self.wrapped.accessed_time(name)
def created_time(self, name):
return self.wrapped.created_time(name)
def modified_time(self, name):
return self.wrapped.modified_time(name)
class DummyExternalStorage(Storage):
def __init__(self, *args, **kwargs):
self.wrapped = FileSystemStorage(*args, **kwargs)
def path(self, name):
# Overridden to give it the behaviour of the base Storage class
# This is what an external storage backend would have
raise NotImplementedError("This backend doesn't support absolute paths.")
def _open(self, name, mode='rb'):
# Overridden to return a DummyExternalStorageFile instead of a normal
# File object
return DummyExternalStorageFile(open(self.wrapped.path(name), mode))
# Wrap all other functions
def _save(self, name, content):
return self.wrapped._save(name, content)
def delete(self, name):
self.wrapped.delete(name)
def exists(self, name):
return self.wrapped.exists(name)
def listdir(self, path):
return self.wrapped.listdir(path)
def size(self, name):
return self.wrapped.size(name)
def url(self, name):
return self.wrapped.url(name)
def accessed_time(self, name):
return self.wrapped.accessed_time(name)
def created_time(self, name):
return self.wrapped.created_time(name)
def modified_time(self, name):
return self.wrapped.modified_time(name)
