Question

看不到任何SuccessMessage。任何人都可以告诉我为什么成功创建数据库条目后为什么没有任何成功消息？

class TicketCreate(AdminPermissionRequiredMixin, SuccessMessageMixin, FormValidationMixin, BaseTicketView, TemplateView):
    template_name = 'tickets/admin/create.html'
    success_message = _("Ticket has been successfully created.")

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context['ticket_form'] = self.ticket_form
        context['tax_form'] = self.tax_form
        return context

    @cached_property
    def ticket_form(self):
        return TicketForm(data=self.request.POST or None, event=self.request.event)

    @cached_property
    def tax_form(self):
        return TicketTaxForm(prefix='tax', data=self.request.POST or None)

    @transaction.atomic
    def post(self, request, *args, **kwargs):
        if self.ticket_form.is_valid() and self.tax_form.is_valid():
            tax_instance = self.tax_form.save(commit=False)
            tax_choice = self.tax_form.cleaned_data.get('tax_choice')
            new_tax = (tax_choice == TicketTaxChoice.NEW_TAX and
                       tax_instance.name and tax_instance.percentage)

            # save the tax instance
            if new_tax:
                tax_instance.event = self.request.event
                tax_instance.save()

            # save the ticket instance
            ticket_instance = self.ticket_form.save(commit=False)
            ticket_instance.event = self.request.event
            if new_tax:
                ticket_instance.tax = tax_instance
            self.ticket_form.save()

            return redirect(
                'tickets:admin:detail',
                self.request.organizer.slug,
                self.request.event.slug,
                ticket_instance.pk
            )

        return super().get(request, *args, **kwargs)

Answer 1

来自official docs：

将成功消息属性添加到基于FormView的类中

我看不到您的其他班级，但是从我看来，您的班级是基于TemplateView的，它不是从FormView派生的。查看the source，您可以看到在调用form_valid时显示了该消息，因此您的班级至少应指定form_class或model字段。但是您是手动调用is_valid()，因此不会调用form_valid，也不会显示消息。

不显示成功消息

1 个答案: