Django：为什么一个keyerror而不是验证错误？ [英] Django: why a keyerror instead of a validation error?

问题描述

为什么在一个字段为空时会出现一个键错误而不是验证错误？字段应为 required = True 默认情况下

why comes a keyerror instead of a validation error when one field is empty? The fields should be required=True by default

class form(forms.ModelForm):
    adminAccount = forms.CharField()
    adminPassword = forms.CharField(widget=forms.PasswordInput)

    def userCheck(self, user, password):
        # do something

    def clean(self):
        self.userCheck(self.cleaned_data['adminAccount'], 
                       self.cleaned_data['adminPassword']) 

推荐答案

正在提高 KeyError 这里：

self.userCheck(self.cleaned_data['adminAccount'],
               self.cleaned_data['adminPassword'])

因为你试图访问 self.cleaned_data [field] 当字段未发布。

Because you're trying to access self.cleaned_data[field] when field was not posted.

文档提供了一个例子，说明了如何验证取决于多个字段的数据。根据示例，您应该执行以下操作：

The documentation provides an example that explains how to validate data that depends on more than one field. According to the examples you should do something like:

cleaned_data = super(form, self).clean()
adminAccount = cleaned_data.get('adminAccount')
adminPassword = cleaned_data.get('adminPassword')

if adminAccount and adminPassword:
    # proceed with your validation

return cleaned_data

另外，记住 Form.clean（） 必须返回clean_data dict。

Also, remember that Form.clean() must return the cleaned_data dict.

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