def form_valid(self, form):
lending = form.save(commit=False)
lending.borrower = self.request.user
if is_lending_possible(lending.beginning_date, lending.book_copy):
lending.save()
remove_from_queue(lending.book_copy, lending.borrower, lending)
else:
messages.add_message(
self.request,
messages.ERROR,
_("This lending is not possible and you should have had errors on the form!"),
)
return redirect("book_detail", book_id=lending.book_copy.book.id)
def clean(self):
beginning_date = self.cleaned_data['beginning_date']
book_copy = self.cleaned_data['book_copy']
is_lending_possible(beginning_date,book_copy)
return self.cleaned_data