Question

#sample code
try:
    Model_1.objects.get(id=1)
    Model_2.objects.get(id=1)
    Model_3.objects.get(id=1)
    Model_4.objects.get(id=1)
except (Model_1.DoesNotExist, Model_2.DoesNotExist, Model_3.DoesNotExist, Model_4.DoesNotExist):
    ...  # do something

我不确定这是否是捕获 N 模型异常的正确方法。还有其他方法可以代替 DoesNotExist 例外吗？

Answer 1

您可以使用ObjectDoesNotExist 从Django文档中，

DoesNotExist 异常的基类； try/except 的 ObjectDoesNotExist 将捕获所有模型的 DoesNotExist 例外。

因此，请尝试以下操作

from django.core.exceptions import ObjectDoesNotExist

try:
    Model_1.objects.get(id=1)
    Model_2.objects.get(id=1)
    Model_3.objects.get(id=1)
    Model_4.objects.get(id=1)
except ObjectDoesNotExist:
    ...  # do something

以一般方式捕获DidsNotExist异常

1 个答案: