python - Django Forms BooleanField 单元测试用例有什么问题？

Question

我完全被困在这里了。为什么这个测试用例会失败？

class BogusForm(forms.Form):
    bogus_bool = forms.BooleanField() 

class TestBogusForm(TestCase):

    def test_bogus_false(self):
        query_dict = QueryDict('', mutable=True)
        query_dict.update({'bogus_bool': False})
        bogus_form = BogusForm(query_dict)
        self.assertTrue(bogus_form.is_valid())

表单字段验证失败，但前提是当我更新 QueryDict 时 bogus_bool 为 False。如果我说:

query_dict.update({'bogus_bool': True})

然后它通过验证。这里发生了什么？这是 Django Forms 中的错误吗？

如果我在将它传递给 BogusForm 构造函数之前查看 QueryDict，它看起来像这样:

<QueryDict: {u'bogus_bool': [False]}>

这对我来说看起来完全合法和正确。

Answer 1

来自 django 的 documentation

Since all Field subclasses have required=True by default, the validation condition here is important. If you want to include a boolean in your form that can be either True or False (e.g. a checked or unchecked checkbox), you must remember to pass in required=False when creating the BooleanField.