url = WaitedFile.order(
self.cleaned_data['path'],
lambda p, waiter_id: build_custom_pdf.delay(self.book.id, self.cleaned_data['cust'], p, waiter_id),
url = WaitedFile.order(
self.cleaned_data['path'],
lambda p, waiter_id: build_custom_pdf.delay(self.book.id, self.cleaned_data['cust'], p, waiter_id),