我需要獲取試圖創(chuàng)建評(píng)論以存儲(chǔ)在模型中的用戶的 profile_id。我可以獲取用戶的屬性，因?yàn)樗鼈儍?nèi)置在 django 中，但是當(dāng)我嘗試使用下面的內(nèi)容來獲取 profile_id 時(shí)，我得到“prof is not defined”錯(cuò)誤。views.py    class ReviewCreateView(LoginRequiredMixin, CreateView):      model = Review      fields = ['rating', 'reviewtext']      def get_context_data(self, **kwargs):        context = super(ReviewCreateView, self).get_context_data(**kwargs)        context['prof'] = Profile.objects.values_list('id', flat=True).filter(user_id=self.request.user.id)        return context      def form_valid(self, form):        form.instance.product = self.request.GET.get('pk')        form.instance.author = self.request.user        form.instance.profile = prof        return super().form_valid(form)models.pyclass Profile(models.Model):    user = models.OneToOneField(User, on_delete = models.CASCADE)class Review(models.Model):    product = models.ForeignKey(Product, on_delete=models.CASCADE)    profile = models.ForeignKey(Profile, on_delete=models.CASCADE)    author = models.ForeignKey(User, on_delete=models.CASCADE)    rating = models.PositiveSmallIntegerField(default=1, validators = [MinValueValidator(1), MaxValueValidator(5)])    reviewtext = models.TextField()class Product(models.Model):    name = models.CharField(max_length=100)