if not fake:
book_xml = self.materialize(changes=changes)
data = {"book_xml": book_xml, "days": days, "hidden": hidden}
+ if self.catalogue_book is not None:
+ cb = self.catalogue_book
+ isbn = cb.isbn_set.filter(form='mp3').first()
+ if isbn is not None:
+ data['isbn_mp3'] = isbn.get_code()
if self.project is not None:
if self.project.logo:
data['logo'] = urljoin(