为什么在自定义清理表单中，request.user会产生错误？

Question

为什么会这样请求用户在此db查询中获取全局名称“request”未定义错误？ 无论是在外面还是里面？ 此代码位于自定义清除定义中：

class QuestionForm(forms.Form):

    question= forms.CharField(label = ('question'))

    def clean_question(self):
        self.question = self.cleaned_data['question']
        self.question = self.question.lower()
        y = ''
        for c in self.question:
            if c != '?':
                y+=str(c)
        self.question = y
        try:
            QuestionModel.objects.get(question= self.question)
        except QuestionModel.DoesNotExist:
            x = QuestionModel(question= self.question)
            x.save()

        y = TheirAnswerModel.objects.get(user= request.user, question_id= x.id) #here

        try:
            x = QuestionModel.objects.get(question= self.question)
            y = TheirAnswerModel.objects.get(user= request.user, question_id= x.id) and here
            raise forms.ValidationError("You have already asked that question")
        except TheirAnswerModel.DoesNotExist:
            return self.question

Answer 1

在引用request（注意它不是一个参数，希望不是全局的）的地方，它不存在于名称空间中。Django有意将表单与请求对象分离，因此需要创建自己的init方法，将其作为参数。你知道吗

class QuestionForm(forms.Form): 

    question = forms.CharField(label = ('question'))


    def __init__(self, *args, **kwargs):
        self.request = kwargs.pop('request', None)
        super(QuestionForm, self).__init__(*args, **kwargs)

    def clean_question(self):

        # this is the only line I modified (besides a little cleanup)
        request = self.request

        self.question = self.cleaned_data['question']
        self.question = self.question.lower()
        y = ''
        for c in self.question:
            if c != '?':
                y+=str(c)
        self.question = y
        try:
            QuestionModel.objects.get(question= self.question)
        except QuestionModel.DoesNotExist:
            x = QuestionModel(question= self.question)
            x.save()

        y = TheirAnswerModel.objects.get(user= request.user, question_id= x.id) #here

        try:
            x = QuestionModel.objects.get(question= self.question)
            y = TheirAnswerModel.objects.get(user= request.user, question_id= x.id) #and here
            raise forms.ValidationError("You have already asked that question")
        except TheirAnswerModel.DoesNotExist:
            return self.question

也许不重要，但你的第二次尝试对我来说没什么意义。你知道吗