def _set_file(self, file):
self.file_type, md5 = identify_and_md5(file)
path = get_path(self.file_type)
try:
blob = DerivedBlob.objects.get(md5_sum=md5,
upload_to_url=path)
if hasattr(self, '_blob'):
self._old_blob = self._blob
except DerivedBlob.DoesNotExist:
blob = DerivedBlob(upload_to_url=path, md5_sum=md5, file=file)
self._blob = blob
def uploaded_new_derived_document(file):
"""
Like `uploaded_new_derived_document' this creates the 'DerivedBlob'
object and a 'DerivedDocument' object.
The `DerivedDocument` object is returned, you need to fill in
`derived_from` and `index`.
"""
file_type, md5_sum = identify_and_md5(file)
try:
blob = DerivedBlob.objects.get(md5_sum=md5_sum)
except DerivedBlob.DoesNotExist:
blob = DerivedBlob(md5_sum=md5_sum, file=file, file_type=file_type)
blob.upload_to_url = get_path(file_type)
blob.save()
document = DerivedDocument()
document._blob = blob
return document
