for k, t in formats.items()]
type = models.CharField(_('type'), db_index=True, choices=format_choices, max_length="100")
for k, t in formats.items()]
type = models.CharField(_('type'), db_index=True, choices=format_choices, max_length="100")
file = OverwritingFileField(_('file'), upload_to=book_upload_path())
uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False, db_index=True)
extra_info = jsonfield.JSONField(_('extra information'), default={}, editable=False)
file = OverwritingFileField(_('file'), upload_to=book_upload_path())
uploaded_at = models.DateTimeField(_('creation date'), auto_now_add=True, editable=False, db_index=True)
extra_info = jsonfield.JSONField(_('extra information'), default={}, editable=False)