有条件地在Django模型表单中只需要一个字段 [英] Conditionally Require Only One Field In Django Model Form

问题描述

无论如何根据是否填写了相同表单的另一个字段，有条件地要求一个字段？

Anyway to make a field conditionally required based on whether or not another field in the same form has been filled out?

If field1 has no data, but field2 does
    form is valid.

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If field1 has no data and field2 has no data
    form is invalid

不寻找任何javascript解决方案。我觉得应该用django形式解决，但不太确定如何最好地去做。

Not looking for any javascript solutions. I feel as it should be solved with django forms, but not quite sure how best to go about it.

推荐答案

覆盖.clean （self）方法，检查self.cleaned_data并提高ValidationError

Override .clean(self) method, check for self.cleaned_data and raise ValidationError

https://docs.djangoproject.com/en/dev/ref/forms/validation/#清洁和验证字段 - 依赖于每个其他

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