為什么request.user會以自定義干凈格式出現錯誤？

Question

為什么在此數據庫查詢中的request.user獲取全局名稱'request'未定義錯誤？ 嘗試定義的內部和外部？ 這段代碼位於一個自定義的干凈定義內：

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

在您引用request （請注意，它不是參數，希望不是全局的），它在名稱空間中不存在。 Django故意將表單與請求對象分開，因此您需要創建自己的init方法，將其作為參數。

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

也許並不重要，但是您的第二個嘗試塊對我而言並沒有多大意義。