Question

如何对失败的Django事务做出反应？例如，返回某种错误页面或重新加载页面等。

代码中有with transaction.atomic()，以防用户保存但在保存userprofile期间出现问题，所有内容都将被回滚。

但是当事务失败以便回滚时，如何检测并对情况作出反应？

if request.method == 'POST':
        if register_as_translator_form.is_valid():
            cleaned = register_as_translator_form.cleaned_data

            with transaction.atomic():
                request.user.first_name = cleaned['first_name']
                request.user.last_name = cleaned['last_name']
                request.user.userprofile.IBAN = cleaned['IBAN']
                languages = cleaned['languages']
                language_levels = get_or_create_unknown_language_levels(languages)
                request.user.userprofile.language_levels.add(*language_levels)
                request.user.save()
                request.user.userprofile.is_translator = True
                request.user.userprofile.save()

            return HttpResponseRedirect('/register-translator-success')

Answer 1

您可以捕获异常（除了-test）并返回错误消息/页面。

   try:
        with transaction.atomic():
            request.user.first_name = cleaned['first_name']
            request.user.last_name = cleaned['last_name']
            request.user.userprofile.IBAN = cleaned['IBAN']
            languages = cleaned['languages']
            language_levels = get_or_create_unknown_language_levels(languages)
            request.user.userprofile.language_levels.add(*language_levels)
            request.user.save()
            request.user.userprofile.is_translator = True
            request.user.userprofile.save()

        return HttpResponseRedirect('/register-translator-success')
    except:
        return HttpResponseRedirect('/register-translator-failure')

如何对失败的事务做出反应（Django）

1 个答案: